Custer, SD Weather

Custer County12:22 PM MDT43.77°N, 103.60°WElevation 5,315 ft

Current conditions

Clear
64°
Clear
Feels like 64°
High 69°·Low 41°
WindW 7 mph
Humidity42%
Dew point41°
Visibility10 mi
Cloud cover2%
UV index4 Moderate
Sunrise7:16 AM
Sunset6:04 PM

Observed at Custer, Custer County Airport · 1 hr ago

Forecast

10-day

  • Tuesday

    Sunny. High near 69, with temperatures falling to around 63 in the afternoon. West wind around 7 mph, with gusts as high as 17 mph.

  • Tuesday Night

    Clear. Low around 41, with temperatures rising to around 43 overnight. Northwest wind around 3 mph.

  • Wednesday

    Sunny. High near 63, with temperatures falling to around 60 in the afternoon. East wind 1 to 7 mph, with gusts as high as 18 mph.

National Weather Service forecast updated 8 hrs ago.

Hourly

Hourly forecast
  1. Now Sunny 66°
  2. 1 PM Sunny 68°
  3. 2 PM Sunny 69°
  4. 3 PM Sunny 69°
  5. 4 PM Sunny 67°
  6. 5 PM Sunny 63°
  7. 6 PM Clear 59°
  8. 7 PM Clear 52°
  9. 8 PM Mostly Clear 50°
  10. 9 PM Mostly Clear 48°
  11. 10 PM Clear 48°
  12. 11 PM Clear 47°
  13. Wed12 AM Clear 46°
  14. 1 AM Clear 45°
  15. 2 AM Clear 45°
  16. 3 AM Clear 44°
  17. 4 AM Clear 43°
  18. 5 AM Clear 43°
  19. 6 AM Sunny 43°
  20. 7 AM Sunny 42°
  21. 8 AM Sunny 45°
  22. 9 AM Sunny 50°
  23. 10 AM Sunny 57°
  24. 11 AM Mostly Sunny 59°

10-day forecast

Details
  1. TonightOct 19 Clear Clear39°
  2. TodayOct 20 Sunny Sunny41°69°
  3. WedOct 21 Sunny Sunny45°63°
  4. ThuOct 22 Mostly Sunny Mostly Sunny50°69°
  5. FriOct 23 Partly Sunny Partly Sunny30%39°67°
  6. SatOct 24 Mostly Sunny Mostly Sunny31°52°
  7. SunOct 25 Sunny Sunny34°56°
  8. MonOct 26 Sunny Sunny56°
  9. TueOct 27 Partly cloudy Partly cloudy37°64°
  10. WedOct 28 Partly cloudy Partly cloudy44°68°

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 Custer

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Air quality

36
Good
Ozone

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

Wind Cave, 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 7:16 AM
Sunset 6:04 PM
Daylight 10 h 48 min (−2 min 51 s tomorrow)
Waxing Gibbous · 70% lit
Moonrise 3:31 PM Moonset 1:05 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low53° / 35°
Record high79° (1974)
Record low17° (2020)
Wettest0.61 in (2019)
Month to date0.88 in (normal 1.21 in)

Mount Rushmore National Memorial, records since 1962. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in UNR, issued 13 hrs ago

Key Messages

- Warm and dry weather through much of this week.

Update

Issued at 1101 PM MDT Mon Oct 19 2026

No major forecast changes were needed with this evening's update. Fairly quiet/low-impact weather continues this week, with diurnally breezy conditions for some areas. Next chance of precip still looks to hold off until at least Friday.

Discussion

(This Evening Through Monday) Issued at 1244 PM MDT Mon Oct 19 2026

Current upper air analysis shows southwest flow over the US as trof deepens off the coast of the PNW. The CWA sits under mostly clear skies with sfc stations reporting temps in the upper 50s to low 60s.

Broad ridging will dominate the pattern through this week, keeping conditions warm and dry. Weak shortwave and attendant cool front will cross the region late Tuesday. Not expecting any precip with this system but highs will be slightly cooler on Wednesday.

Amplifying upper ridge and breezy southerly flow will support much warmer temps on Thursday with highs in the upper 70s to low 80s across much of the region.

Our next chance at precip comes this weekend as trof pushes onshore over the western US. Deterministic and ensemble model solutions diverge on the evolution of this trof as it pushes eastward into the central US, leading to low forecast certainty on timing and specific impacts from this system.

Aviation

(For the 06Z TAFS Through 06Z Tuesday Night) Issued At 933 PM MDT Mon Oct 19 2026

VFR conditions through the forecast period. Breezy winds will continue to slowly diminish across the northeast Wyoming and northwest South Dakota plains before shifting to the north around 20/19-22z.

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.