10-Day Accurate Weather Forecast for Spearfish 57783, South Dakota

Today’s Weather in Spearfish 57783, South Dakota

Hourly Forecast for Spearfish 57783, South Dakota

Weekend Weather in Spearfish 57783, South Dakota

Wind, Humidity, UV Index & Air Quality in Spearfish 57783, South Dakota

Q: What is the weather today? A: View live local conditions including temperature, precipitation chances, wind, and humidity. Check the hourly and 10‑day forecast to plan your day and week. Q: What does a 40% chance of rain mean? A: It means there’s a 40% probability that at least 0.01" (0.25 mm) of precipitation will fall at your location during the forecast period. It doesn’t mean it will rain for 40% of the time. Q: How accurate are your weather forecasts? A: Forecasts blend multiple models with real‑time radar, satellite, and station observations. Short‑term (0–48 hours) outlooks are most reliable; uncertainty increases beyond 7–10 days and with fast‑changing systems. Q: How often are forecasts and radar maps updated? A: Current conditions and radar update every few minutes. Forecasts refresh several times daily as new model runs arrive. Alerts appear as soon as official agencies issue them. Q: What does the “feels like” temperature mean? A: The apparent temperature adjusts for humidity, wind, and sometimes sun exposure. It uses wind chill in cold weather and heat index in hot, humid conditions to reflect how it actually feels. Q: Dew point vs. humidity — which matters more? A: Humidity is a percentage; dew point is the actual moisture content. Dew point is the best comfort indicator: ≤50°F/10°C feels dry, 60–65°F/16–18°C is humid, and ≥70°F/21°C is oppressive. Q: How do I read the radar map and track storm movement? A: Green/yellow/red show light to heavy precipitation; blue/pink often indicate wintry mix or snow. Play the loop to gauge direction and speed; “future radar” projects likely storm paths. Q: Watch vs. warning vs. advisory — what’s the difference? A: Watch: conditions are favorable — be prepared. Warning: hazardous weather is occurring or imminent — take action now. Advisory: less severe but impactful conditions — use caution. Q: How can I get severe weather alerts? A: Turn on notifications and choose alert types (thunderstorm, tornado, flood, winter weather, hurricane). Alerts are geo‑targeted to your locations and sent immediately when issued. Q: How do I check the weather near me? A: Enable location services or search for a place to view a local forecast page. Save favorite locations for quick access to current, hourly, and 10‑day details. Q: What is the Air Quality Index (AQI), and is it safe to be outside? A: AQI ranges 0–500: 0–50 Good, 51–100 Moderate, 101–150 Unhealthy for Sensitive Groups, 151–200 Unhealthy, 201–300 Very Unhealthy, 301–500 Hazardous. Limit outdoor activity when AQI is elevated. Q: What is the UV Index, and when is sun exposure risky? A: UV Index runs 0–11+: 0–2 Low, 3–5 Moderate, 6–7 High, 8–10 Very High, 11+ Extreme. Protect skin and eyes, especially from 10 a.m. to 4 p.m., with sunscreen, sunglasses, and shade. Q: Why did the forecast change? A: New model data and observations can shift storm timing, track, or intensity. Forecasts are updated to reflect the latest guidance, especially during rapidly evolving weather. Q: Do you provide historical weather data and climate averages? A: Access past conditions, climate normals, and records for temperature, precipitation, and snowfall. Historical charts help compare today’s weather with long‑term trends. Q: How do I change units (°F/°C, mph/km/h, in/mm)? A: Use the settings menu to switch between imperial and metric units. Your preference is saved for future visits. Weather Updated 12.09.2025 at 6:00 PM Everyday Weather in Spearfish 57783, South Dakota: A Practical USA Guide Weather touches every part of life in Spearfish 57783, South Dakota. From the first light at dawn to the evening commute, local conditions shape what we wear, how we travel, and how we plan time with family and friends. This article isn’t a forecast; it’s a clear, human guide to understanding weather patterns in the United States so you can read the sky, skim a 10‑day forecast, and use hourly details and radar to your advantage. Whether you’re new to Spearfish 57783 or have lived in South Dakota for years, a few practical habits will make each day more comfortable and less surprising. Across the USA, national patterns filter down to local neighborhoods. The jet stream steers storm tracks, while regional influences—cold, dry air from Canada, moisture from the Gulf of Mexico, Pacific systems, and interior heat—combine to create the conditions you feel in Spearfish 57783, South Dakota. Even when the news highlights national weather, the best insights come from pairing those big‑picture trends with the microclimates right around your block. Terrain, nearby water, and urban development can tilt temperatures, wind, and precipitation just enough to matter for your plans. Temperature, “Feels Like,” and Daily Comfort Start with temperature, but don’t stop there. In Spearfish 57783, South Dakota, the “feels like” temperature often tells the truer story. On hot days, the heat index blends temperature and humidity to describe how oppressive the air feels; on cold days, wind chill reveals how quickly you’ll lose heat. Dew point is an especially helpful number for comfort: higher dew points mean muggy air and slower nighttime cooling, while lower values feel crisp and dry. Check the day’s high, low, and the evening cooldown so you can layer smartly, manage HVAC efficiently, and time outdoor activities for the most pleasant hours in South Dakota. Diurnal range—how much temperatures swing between afternoon and night—matters too. Clear skies typically widen the range, while cloud cover narrows it. In practical terms, that means a t‑shirt at lunch can give way to a light jacket after sunset in Spearfish 57783. When you glance at the 10‑day forecast for Spearfish 57783, South Dakota, look for trend lines—rising overnight lows can hint at muggier mornings, while steady daytime highs with dropping dew points signal more comfortable afternoons. Precipitation: Timing, Intensity, and Probability Precipitation is about more than rain versus snow. Intensity and timing drive real‑world impact in Spearfish 57783, South Dakota. A brief, intense downpour can overwhelm drains, reduce visibility, and slick up intersections, while a long, gentle rain soaks soil and can chill you faster than you expect. Learn two common terms: PoP (probability of precipitation) and QPF (quantitative precipitation forecast). PoP tells you the chance any rain or snow occurs; QPF estimates how much. In practice, a 40% chance might be a short shower—easy to dodge—while a lower chance paired with higher QPF can still mean a soaking if the band passes over Spearfish 57783. For winter, temperature profiles matter. Air that hovers near freezing can flip between rain, sleet, and snow in short spans. Bridges, overpasses, and shaded sidewalks around Spearfish 57783, South Dakota can glaze early, even when most roads are just wet. Keep footwear with good tread by the door, add extra braking distance when driving, and check radar loops to visualize where the heaviest cells or snow bands are moving. Wind, Barometric Pressure, and Fronts Wind shapes how every temperature feels. Sustained winds tell you what to expect consistently, while gusts signal sudden pushes of air that can affect cycling, jogging, and high‑profile vehicles. In Spearfish 57783, South Dakota, scan both speed and direction; a shift can announce a frontal passage long before clouds arrive. Falling barometric pressure often precedes unsettled weather; rising pressure usually clears the sky. Knowing that a cold front is due this evening lets you plan errands earlier, secure light outdoor items, and choose a sheltered route for the late‑day dog walk. Cloud Cover, Sunlight, and UV Clouds influence mood, productivity, and safety. On bright days in Spearfish 57783, South Dakota, sunlight can heat pavements and car interiors quickly even in cooler seasons, so park in shade and crack windows when safe. The UV index is worth checking year‑round; high UV can occur on snow, near water, or on hazy days when sunlight scatters. On overcast afternoons, visibility drops faster than you think—reflective clothing and running lights improve safety. As seasons shift across the USA, sun angle and day length change, affecting how warm or cool a given temperature feels in South Dakota. Air Quality, Pollen, and Health‑Wise Habits Air quality matters on quiet weekdays and during headline‑grabbing events. Depending on conditions in South Dakota, pollen peaks, urban ozone, dust, or occasional smoke can nudge your plans. For Spearfish 57783, watch AQI and pollen alongside the forecast. When air quality slips, close windows during the worst hours, use a HEPA filter if available, and favor indoor or early‑morning workouts. After a rain, allergens often settle, offering a cleaner outdoor window. These small adjustments pay off in clearer breathing, better sleep, and steadier energy. Microclimates and the Urban Heat Island Two neighborhoods in Spearfish 57783, South Dakota can feel different on the same day. Parks, tree canopies, water, hills, and dense pavement each tilt local conditions. Urban heat islands store daytime warmth, keeping nights milder but sometimes stuffy. Breezy ridgelines feel cooler than sheltered courtyards. Keep a simple mental map: where do puddles linger, where does frost form first, which streets funnel wind? Over time, you’ll anticipate how a “generic” forecast becomes a “specific” plan for your routine in Spearfish 57783. Reading Forecasts Like a Pro (Without Being One) Pair the 10‑day forecast for Spearfish 57783, South Dakota with the hourly view and live radar. The 10‑day gives broad trends—warming, cooling, wetter, drier—while the hourly clarifies timing for school runs, lunch breaks, and commutes. Radar loops reveal motion: is the line weakening, strengthening, or splitting around your area? National Weather Service (NWS) discussions add context in plain language, explaining fronts, instability, and confidence. Alerts and advisories—heat, wind, winter weather, flood—are your cue to adjust plans early rather than react late. Seasonal Readiness Across the USA Season by season, a little preparation in Spearfish 57783, South Dakota goes a long way. Before heat waves, check cooling systems, install fresh filters, and stock cold packs. In shoulder seasons, use ventilation at night to capture cool air, then close up in the morning to hold comfort without over‑relying on AC. Ahead of cold snaps, inspect coats, gloves, wiper blades, and tire pressure; keep an ice scraper handy. Thunderstorms bring lightning, small hail, gusty outflows, and brief torrents—secure outdoor items and avoid flooded dips. In some parts of South Dakota, winter storms or strong winds may warrant a small car kit: water, snacks, a flashlight, a blanket, and a power bank. Smart Habits for Daily Life in Spearfish 57783, South Dakota Build a simple routine: morning glance at the hourly forecast, midday check of radar, evening review of tomorrow’s highs, lows, and dew point. Set alerts at thresholds that matter to you—temperature, wind speed, precipitation probability—so weather serves as a nudge, not a surprise. Time outdoor chores for lower UV or lower humidity, and shift runs or dog walks to calmer hours. Keep a compact umbrella, a breathable rain shell, and sun protection in your bag or car. Over weeks, these habits stack up to a calmer, safer rhythm in Spearfish 57783 and across South Dakota. Finally, remember that weather is a conversation between sky and ground. National patterns set the stage, but each block in Spearfish 57783, South Dakota writes its own small scene. By watching temperature, dew point, wind, cloud cover, and precipitation—not just once, but as a pattern—you’ll turn the daily forecast into actionable insight. Whether you’re planning a backyard get‑together, organizing school pickups, or mapping a weekend road trip across South Dakota, the right blend of 10‑day trends, hourly details, and radar snapshots will keep you a step ahead. That’s the quiet power of weather awareness in the USA: better timing, better comfort, better days. Weather Updated 16.09.2025 at 9:00 AM Overview Theme: 🌦️ Cool, breezy, and showery behind a passing front. Periods of light-to-moderate rain with sunny breaks midday; showers taper by evening. Cooler than recent days. Today’s high/low: 22°C / 12°C (72°F / 54°F) Current conditions (9:00 AM) Condition: 🌧️ Light rain, breezy and cool Temperature: 16°C (61°F) — Feels like 15°C (59°F) Wind: WNW 27 km/h (17 mph), gusts 46 km/h (29 mph) Humidity: 78% — Dew point 12°C (54°F) — Wet bulb ~14°C (57°F) Pressure: 1017 hPa (30.03 inHg), rising Visibility: 6–12 km (4–7 mi), variable in showers Cloud cover: 75–85% — Ceiling 900–1,300 m (3–4.3 kft), lifting later UV index (now/max): 1 (Low) / 3 (Moderate) Rain today so far: 3.8 mm (0.15 in) — Next few hours precip chance: 60–80% (additional 2–6 mm) Snow: 0 cm — Snow level ~2,500–2,800 m (8,200–9,200 ft) — Freezing level ~2,700–3,000 m (8,900–9,800 ft) Sunrise: 6:47 AM — Sunset: 7:20 PM Moon: 🌘 Waning crescent (~45% illuminated) Air Quality: 🙂 Good (AQI ~24–38) — PM2.5 ~5–8 µg/m³; O₃ ~25–40 ppb Pollen: 🌿 Low–Moderate (ragweed knocked down by rain; grass/tree low) Fire danger: Low–Moderate (wetting showers + cool temps) Alerts: None Today at a glance Morning (9 AM–12 PM): On/off showers, breezy and cool. Temps 16→19°C. WNW 25–40 km/h, gusts 45–55 km/h. Afternoon (12–5 PM): Scattered showers with sunny breaks; a brief heavier shower possible early afternoon. High 21–22°C. Winds WNW 20–35 km/h, gusts 40–50 km/h. RH 55–65%. Evening (5–10 PM): Showers fade; turning partly clear and calmer. Temps 19→14°C. Overnight (10 PM–6 AM): Mostly clear to partly cloudy; patchy mist in low spots toward dawn. Low 12°C. Expected rain today (total): 4–10 mm. Winds: WNW today, easing and veering N→NE late tonight. 9:00 AM forecast (key update) 9 AM — 🌧️ Light rain, breezy. 16°C. Wind WNW 27 km/h (17 mph) gust 46 (29). Hum 78%. PoP 70%. Pressure 1017 hPa, rising. Cloud 80%. Hourly forecast (next 24 hours; icon • conditions • key metrics) 10 AM — 🌦️ Showers, breezy. 17°C. WNW 28 km/h gust 48. Hum 76%. PoP 70% (1–2 mm). 1017–1018 hPa. Cloud 80%. 11 AM — 🌥️ Showers nearby, brief breaks. 18°C. WNW 30 km/h gust 50. Hum 72%. PoP 60% (0–1 mm). 1018 hPa. Cloud 75%. UV 2. 12 PM — 🌦️ Scattered showers. 19°C. W 28 km/h gust 46. Hum 68%. PoP 50% (≤1 mm). 1018–1019 hPa. Cloud 70%. 1 PM — ⛅ Sunny intervals; stray shower. 20°C. W 26 km/h gust 44. Hum 64%. PoP 40%. 1019 hPa. Cloud 60%. 2 PM — ⛅ Partly sunny, a couple of sprinkles. 21°C. WNW 25 km/h gust 42. Hum 60%. PoP 30%. 1019–1020 hPa. Cloud 50%. UV 3. 3 PM — 🌤️ Mostly dry, breezy. 22°C. WNW 24 km/h gust 40. Hum 56%. PoP 20%. 1020 hPa. Cloud 40%. 4 PM — 🌤️ Bright spells; isolated shower. 21°C. W 22 km/h gust 36. Hum 58%. PoP 20%. 1020–1021 hPa. Cloud 40%. 5 PM — 🌤️ Partly clear, cooler. 20°C. W 20 km/h gust 34. Hum 60%. PoP 15%. 1021 hPa. Cloud 35%. 6 PM — 🌤️ Mostly clear. 19°C. WNW 16 km/h gust 28. Hum 62%. PoP 10%. 1021 hPa. Cloud 30%. 7 PM — 🌙 Clearing. 17°C. NW 12 km/h. Hum 66%. PoP 10%. 1021–1022 hPa. Cloud 20%. 8 PM — 🌙 Mostly clear. 16°C. NNW 10 km/h. Hum 70%. PoP 5–10%. 1022 hPa. Cloud 15%. 9 PM — 🌙 Clear breaks. 15°C. N 8 km/h. Hum 74%. PoP 5%. 1022 hPa. Cloud 10%. 10 PM — 🌙 Mostly clear and cool. 14°C. NNE 8 km/h. Hum 78%. PoP 5%. 1022–1023 hPa. Cloud 10%. 11 PM — 🌙 Clear. 13°C. NE 7 km/h. Hum 82%. PoP 0–5%. 1023 hPa. Cloud 10%. 12 AM — 🌫️ Patchy mist developing. 13°C. ENE 7 km/h. Hum 86%. PoP 0–5%. 1023 hPa. Cloud 10%. Vis 10–14 km. 1 AM — 🌫️ Localized valley fog. 12°C. E 8 km/h. Hum 88%. PoP 0–5%. 1023 hPa. Cloud 10%. Vis 8–12 km. 2 AM — 🌙 Mostly clear; fog pockets. 12°C. ESE 8 km/h. Hum 90%. PoP 0–5%. 1023–1024 hPa. Cloud 10%. 3 AM — 🌙 Partly clear. 12°C. SE 9 km/h. Hum 90%. PoP 0–5%. 1024 hPa. Cloud 15%. 4 AM — 🌙 Patchy fog. 12°C. SE 10 km/h. Hum 90%. PoP 0–5%. 1024 hPa. Cloud 15%. 5 AM — 🌫️ Mist in low spots. 12°C. SE 12 km/h. Hum 90%. PoP 0–5%. 1024 hPa. Cloud 15%. 6 AM — 🌤️ Mist lifting; brighter. 13°C. SE 14 km/h. Hum 88%. PoP 0–5%. 1023–1024 hPa. Cloud 20%. 7 AM — 🌤️ Mostly sunny start. 15°C. SE 16 km/h. Hum 84%. PoP 0–5%. 1023 hPa. Cloud 20%. 8 AM — ☀️ Sunny, warming. 17°C. ESE 18 km/h. Hum 78%. PoP 0–5%. 1022–1023 hPa. Cloud 15%. 9 AM (Wed) — ☀️ Bright and mild. 19°C. E 20 km/h. Hum 70%. PoP 0–5%. 1022 hPa. Cloud 10%. 7‑day forecast (updated) Tue (Sep 16) — 🌦️ Breezy, cool, and showery. High 22°C (72°F), low 12°C (54°F). PoP 60–80% with 4–10 mm. WNW 25–40 km/h, gusts 45–55 km/h. UV max 3. Wed (Sep 17) — 🌤️ Clearing and seasonable; lighter winds. High 24°C (75°F), low 12°C (54°F). PoP 0–10%. NNW→NE 10–20 km/h. UV max 5. Thu (Sep 18) — ☀️ Fair and milder. High 26°C (79°F), low 13°C (55°F). PoP 0–10%. E→SE 10–20 km/h. UV max 6. Fri (Sep 19) — ⛅ Increasing clouds; late showers. High 25°C (77°F), low 15°C (59°F). PoP 40–60% with 2–6 mm. S 15–30 km/h. Sat (Sep 20) — 🌦️ Showers taper, breezy and cooler. High 21°C (70°F), low 12°C (54°F). PoP 40–60% with 2–8 mm. W 20–35 km/h. Sun (Sep 21) — 🌤️ Mostly sunny, pleasant. High 23°C (73°F), low 11°C (52°F). PoP 0–10%. N 10–20 km/h. Mon (Sep 22) — 🌥️ Partly sunny; warmer afternoon. High 26°C (79°F), low 13°C (55°F). PoP 10–20%. ESE 10–20 km/h.