Current Conditions

Rapid City, South Dakota

80°F26°C
Drizzle

Wind

SE 6 mph10 km/h

Humidity

47%

Cloud Cover

7%

As of Wednesday, September 2, 2026 at 11:43 AM MDT

Today's Outlook

Day

Mostly clear and hot, with a high of 88°F31°C and morning low of 58°F14°C. Breezy from the SSE at 5 to 8 mph8 to 14 km/h.

Night

Partly cloudy, with a low around 71°F22°C. Breezy from the S at 7 mph11 km/h. 11% chance of drizzle.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
DrizzleHigh 88°F31°CLow 58°F14°CPrecip 0.01 in0.2 mm11%Cloud 26%Wind SSE 6 mph9 km/hWednesday: Mostly clear and hot, with a high of 88°F31°C and morning low of 58°F14°C. Breezy from the SSE at 5 to 8 mph8 to 14 km/h. Wednesday Night: Partly cloudy, with a low around 71°F22°C. Breezy from the S at 7 mph11 km/h. 11% chance of drizzle.
ClearHigh 90°F32°CLow 66°F19°CPrecip 0 in0 mmCloud 19%Wind WSW 7 mph11 km/hThursday: Mostly clear and hot, with a high of 90°F32°C and morning low of 66°F19°C. Breezy from the WSW at 6 to 10 mph10 to 16 km/h. Dry air. Thursday Night: Mostly clear, with a low around 67°F20°C. Breezy from the SW at 7 to 10 mph11 to 15 km/h.
DrizzleHigh 94°F34°CLow 60°F16°CPrecip 0 in0.1 mm10%Cloud 14%Wind SSE 7 mph11 km/hFriday: Mostly clear and hot, with a high of 94°F34°C and morning low of 60°F16°C. Breezy from the SSE at 8 to 13 mph13 to 21 km/h. Dry air. Friday Night: Mostly clear, with a low around 62°F17°C. Breezy from the S at 6 to 9 mph9 to 15 km/h. 10% chance of drizzle.
DrizzleHigh 93°F34°CLow 65°F18°CPrecip 0.01 in0.2 mm13%Cloud 19%Wind WSW 6 mph9 km/hSaturday: Mostly clear and hot, with a high of 93°F34°C and morning low of 65°F18°C. Light wind from the NNE around 6 mph9 km/h. 13% chance of drizzle in the afternoon. Dry air. Saturday Night: Mostly clear, with a low around 69°F20°C. Light wind from the SW around 6 mph9 km/h.
ShowersHigh 88°F31°CLow 66°F19°CPrecip 0.06 in1.5 mm38%Cloud 42%Wind SSE 7 mph11 km/hSunday: Partly cloudy and hot, with a high of 88°F31°C and morning low of 66°F19°C. Breezy from the SSE at 7 to 9 mph11 to 14 km/h. 14% chance of drizzle around midday. Sunday Night: Mostly cloudy, with a low around 69°F20°C. Breezy from the S at 7 to 8 mph11 to 13 km/h. 38% chance of showers in the evening.
ShowersHigh 89°F32°CLow 67°F19°CPrecip 0.08 in2.1 mm31%Cloud 54%Wind SSW 8 mph13 km/hMonday: Mostly cloudy and hot, with a high of 89°F32°C and morning low of 67°F19°C. Breezy from the SSW at 9 to 10 mph14 to 17 km/h. 24% chance of showers throughout the day. Monday Night: Mostly cloudy, with a low around 69°F21°C. Breezy from the SSW at 8 to 9 mph13 to 14 km/h. 31% chance of showers overnight.
ClearHigh 83°F29°CLow 59°F15°CPrecip 0 in0.1 mm4%Cloud 19%Wind WNW 7 mph11 km/hTuesday: Mostly clear and warm, with a high of 83°F29°C and morning low of 59°F15°C. Breezy from the WNW at 7 to 8 mph11 to 12 km/h. Dry air. Tuesday Night: Mostly clear, with a low around 65°F18°C. Breezy from the W at 8 mph12 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 288°F31°C58°F14°C0.01 in0.2 mm· 11%26%DrizzleSSE 6 mph9 km/h
ThursdaySep 390°F32°C66°F19°C0 in0 mm· —19%ClearWSW 7 mph11 km/h
FridaySep 494°F34°C60°F16°C0 in0.1 mm· 10%14%DrizzleSSE 7 mph11 km/h
SaturdaySep 593°F34°C65°F18°C0.01 in0.2 mm· 13%19%DrizzleWSW 6 mph9 km/h
SundaySep 688°F31°C66°F19°C0.06 in1.5 mm· 38%42%ShowersSSE 7 mph11 km/h
MondaySep 789°F32°C67°F19°C0.08 in2.1 mm· 31%54%ShowersSSW 8 mph13 km/h
TuesdaySep 883°F29°C59°F15°C0 in0.1 mm· 4%19%ClearWNW 7 mph11 km/h
WednesdaySep 981°F27°C55°F13°C0.02 in0.6 mm· 7%34%ClearW 7 mph11 km/h
ThursdaySep 1081°F27°C57°F14°C0.04 in1.1 mm· 12%49%DrizzleSW 7 mph11 km/h
FridaySep 1176°F25°C58°F14°C0.09 in2.2 mm· 18%48%DrizzleNW 8 mph13 km/h
SaturdaySep 1274°F23°C54°F12°C0.1 in2.5 mm· 17%44%ShowersWNW 8 mph13 km/h
SundaySep 1373°F23°C52°F11°C0.06 in1.6 mm· 14%44%DrizzleWSW 8 mph12 km/h
MondaySep 1475°F24°C52°F11°C0.06 in1.4 mm· 11%43%DrizzleSW 8 mph12 km/h
TuesdaySep 1577°F25°C53°F12°C0.06 in1.4 mm· 14%36%DrizzleSW 7 mph12 km/h
WednesdaySep 1675°F24°C54°F12°C0.06 in1.4 mm· 10%36%DrizzleWNW 8 mph13 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 44.0805°N, 103.2310°W·Elevation: 988m·Timezone: America/Denver·Population: 73,569