Box Elder, SD Weather

Pennington County3:08 AM MDT44.11°N, 103.07°WElevation 3,035 ft

Current conditions

Clear
52°
Clear
Feels like 52°
High 72°·Low 44° tonight
WindNNW 15 mph
Humidity62%
Dew point39°
Pressure30.19 inHg
Visibility10 mi
Cloud cover5%
UV index0 Low
Sunrise7:15 AM
Sunset6:00 PM

Observed at Rapid City, Rapid City Regional Airport · 18 min ago

Forecast

10-day

  • Tonight

    Mostly clear. Low around 44, with temperatures rising to around 46 overnight. Northwest wind around 12 mph, with gusts as high as 23 mph.

  • Wednesday

    Sunny. High near 72, with temperatures falling to around 67 in the afternoon. Northeast wind 5 to 10 mph, with gusts as high as 22 mph.

  • Wednesday Night

    Mostly clear. Low around 47, with temperatures rising to around 51 overnight. South wind around 9 mph, with gusts as high as 18 mph.

National Weather Service forecast updated 7 hrs ago.

Hourly

Hourly forecast
  1. Now Clear 48°
  2. 4 AM Clear 48°
  3. 5 AM Clear 46°
  4. 6 AM Sunny 45°
  5. 7 AM Sunny 45°
  6. 8 AM Sunny 47°
  7. 9 AM Sunny 52°
  8. 10 AM Sunny 56°
  9. 11 AM Sunny 59°
  10. 12 PM Mostly Sunny 62°
  11. 1 PM Mostly Sunny 65°
  12. 2 PM Sunny 69°
  13. 3 PM Sunny 70°
  14. 4 PM Sunny 70°
  15. 5 PM Sunny 67°
  16. 6 PM Clear 63°
  17. 7 PM Mostly Clear 59°
  18. 8 PM Mostly Clear 56°
  19. 9 PM Mostly Clear 54°
  20. 10 PM Clear 53°
  21. 11 PM Mostly Clear 53°
  22. Thu12 AM Clear 52°
  23. 1 AM Clear 51°
  24. 2 AM Mostly Clear 51°

10-day forecast

Details
  1. TonightOct 20 Mostly Clear Mostly Clear44°
  2. TodayOct 21 Sunny Sunny47°72°
  3. ThuOct 22 Mostly Sunny Mostly Sunny55°80°
  4. FriOct 23 Partly Sunny Partly Sunny18%44°79°
  5. SatOct 24 Mostly Sunny Mostly Sunny36°57°
  6. SunOct 25 Sunny Sunny36°57°
  7. MonOct 26 Sunny Sunny12%35°52°
  8. TueOct 27 Mostly Sunny Mostly Sunny10%58°
  9. WedOct 28 Sunny Sunny35°59°
  10. ThuOct 29 Partly cloudy Partly cloudy41°64°

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

29
Good
Ozone

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 53 s tomorrow)
Waxing Gibbous · 76% 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 06Z TAFS Through 06Z Wednesday Night) Issued At 1040 PM MDT Tue Oct 20 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.