Box Elder, SD 57719 Weather

Pennington County9:36 AM MDT44.12°N, 103.07°W

Current conditions

Sunny
46°
Sunny
Feels like 45°
High 69°·Low 47°
WindW 3 mph
Humidity76%
Dew point39°
Pressure30.23 inHg
Visibility10.0 mi
Cloud cover14%
UV index1 Low
Sunrise7:15 AM
Sunset6:00 PM

Observed at Ellsworth Air Force Base · 1 hr ago

Forecast

10-day

  • Today

    Sunny. High near 69, with temperatures falling to around 65 in the afternoon. Northeast wind 1 to 10 mph, with gusts as high as 21 mph.

  • Tonight

    Mostly clear. Low around 47, with temperatures rising to around 51 overnight. South wind 7 to 13 mph, with gusts as high as 23 mph.

  • Thursday

    Mostly sunny. High near 82, with temperatures falling to around 78 in the afternoon. South wind 13 to 17 mph, with gusts as high as 31 mph.

National Weather Service forecast updated 3 hrs ago.

Hourly

Hourly forecast
  1. Now Sunny 51°
  2. 10 AM Sunny 55°
  3. 11 AM Mostly Sunny 59°
  4. 12 PM Mostly Sunny 61°
  5. 1 PM Sunny 64°
  6. 2 PM Sunny 67°
  7. 3 PM Sunny 68°
  8. 4 PM Sunny 67°
  9. 5 PM Sunny 65°
  10. 6 PM Clear 62°
  11. 7 PM Clear 58°
  12. 8 PM Mostly Clear 56°
  13. 9 PM Mostly Clear 54°
  14. 10 PM Clear 52°
  15. 11 PM Clear 52°
  16. Thu12 AM Mostly Clear 51°
  17. 1 AM Partly Cloudy 50°
  18. 2 AM Mostly Clear 49°
  19. 3 AM Mostly Clear 48°
  20. 4 AM Mostly Clear 50°
  21. 5 AM Partly Cloudy 51°
  22. 6 AM Partly Sunny 51°
  23. 7 AM Mostly Cloudy 52°
  24. 8 AM Partly Sunny 54°

10-day forecast

Details
  1. TodayOct 21 Sunny Sunny47°69°
  2. ThuOct 22 Mostly Sunny Mostly Sunny54°82°
  3. FriOct 23 Partly Sunny Partly Sunny23%43°84°
  4. SatOct 24 Mostly Sunny Mostly Sunny34°54°
  5. SunOct 25 Mostly Sunny then Slight Chance Light Rain Mostly Sunny then Slight Chance Light Rain26%33°54°
  6. MonOct 26 Slight Chance Rain And Snow then Partly Sunny Slight Chance Rain And Snow then Partly Sunny17%34°50°
  7. TueOct 27 Mostly Sunny Mostly Sunny10%35°57°
  8. WedOct 28 Rain Rain0.05 in31°52°
  9. ThuOct 29 Mostly sunny Mostly sunny28°54°
  10. FriOct 30 Sunny Sunny32°56°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news near Box Elder

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Air quality

26
Good
Fine particles (PM2.5)

Air quality is satisfactory, and air pollution poses little or no risk.

Rapid City, SD reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:15 AM
Sunset 6:00 PM
Daylight 10 h 44 min (−2 min 54 s tomorrow)
Waxing Gibbous · 78% lit
Moonrise 3:50 PM Moonset 2:08 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low58° / 32°
Record high89° (1992)
Record low19° (1987)
Wettest0.30 in (2020)
Month to date0.12 in (normal 1.04 in)

Rapid City Area, records since 1942. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in UNR, issued 4 hrs ago

Key Messages

- Warm and dry weather through much of this week.

Update

Issued at 1058 PM MDT Tue Oct 20 2026

No major changes to the forecast this evening. Surface analysis shows a weak cold front crossing NW SD at this time. Across SW SD, temps are in the mid to upper 50s while over NW SD into portions of NE WY temps are dropping into the upper 40s. NW winds will continue overnight into Wed morning, then return flow sets up as the surface high pushes east of the CWA Wed afternoon. Max temps on Wed will be in the 60s to low 70s...but then a decent overnight LLJ/warm air advection will push highs on Thursday well above average (upper 70s to possibly mid 80s over the western SD plains).

Discussion

(This Evening Through Tuesday) Issued at 1254 PM MDT Tue Oct 20 2026

Current upper level analysis shows broad ridging over the central and western US with deepening trof off the west coast. The CWA sits under upper level southwest flow and clear skies. Sfc stations report light southerly winds across much of western SD with temperatures in the 60s to low 70s.

Weak front will cross the CWA overnight with the only impacts being a slight drop in tomorrow's highs and a brief period of breezy northwest winds overnight. Upper ridge builds over the region Wednesday into Thursday with southerly return flow supporting warming temps over the area.

Southerly winds pick up early Friday morning as upper level trof approaches with attendant sfc low and trailing cold front crossing the Northern Plains. WAA ahead of the front Friday afternoon will support highs in the upper 70s to low 80s over the western SD plains. As the front crosses the area later Friday evening, winds will shift to the northwest but remain breezy through the night, especially over northwestern SD. Much cooler conditions expected over the weekend with low chances for light precip.

Aviation

(For the 12Z TAFS Through 12Z Thursday Morning) Issued At 511 AM MDT Wed Oct 21 2026

VFR conditions are expected through the forecast period.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.