Gillette, WY 82717 Weather

Campbell County2:06 AM MDT44.30°N, 105.50°W

Current conditions

Mostly Cloudy
48°
Mostly Cloudy
Feels like 48°
High 72°·Low 38° tonight
WindCalm
Humidity62%
Dew point36°
Pressure30.24 inHg
Visibility10 mi
Cloud cover4%
UV index0 Low
Sunrise7:25 AM
Sunset6:09 PM

Observed at Gillette, Gillette-Campbell County Airport · 31 min ago

Forecast

10-day

  • Overnight

    Clear. Low around 38, with temperatures rising to around 41 overnight. West wind around 3 mph.

  • Wednesday

    Sunny. High near 72, with temperatures falling to around 68 in the afternoon. South wind 3 to 16 mph, with gusts as high as 28 mph.

  • Wednesday Night

    Mostly clear. Low around 49, with temperatures rising to around 52 overnight. South wind 14 to 21 mph, with gusts as high as 39 mph.

National Weather Service forecast updated 1 hr ago.

Hourly

Hourly forecast
  1. Now Clear 48°
  2. 3 AM Clear 46°
  3. 4 AM Clear 43°
  4. 5 AM Clear 41°
  5. 6 AM Sunny 39°
  6. 7 AM Sunny 39°
  7. 8 AM Sunny 41°
  8. 9 AM Mostly Sunny 48°
  9. 10 AM Mostly Sunny 54°
  10. 11 AM Sunny 59°
  11. 12 PM Sunny 63°
  12. 1 PM Sunny 67°
  13. 2 PM Sunny 70°
  14. 3 PM Sunny 71°
  15. 4 PM Sunny 70°
  16. 5 PM Sunny 68°
  17. 6 PM Clear 65°
  18. 7 PM Mostly Clear 61°
  19. 8 PM Mostly Clear 59°
  20. 9 PM Mostly Clear 58°
  21. 10 PM Mostly Clear 56°
  22. 11 PM Mostly Clear 55°
  23. Thu12 AM Partly Cloudy 55°
  24. 1 AM Mostly Clear 55°

10-day forecast

Details
  1. TonightOct 20 Clear Clear38°
  2. TodayOct 21 Sunny Sunny49°72°
  3. ThuOct 22 Mostly Sunny Mostly Sunny52°76°
  4. FriOct 23 Mostly Sunny Mostly Sunny31%34°74°
  5. SatOct 24 Mostly Sunny Mostly Sunny30°47°
  6. SunOct 25 Mostly Sunny Mostly Sunny10%31°52°
  7. MonOct 26 Partly Sunny Partly Sunny30°50°
  8. TueOct 27 Mostly Sunny Mostly Sunny58°
  9. WedOct 28 Sunny Sunny31°60°
  10. ThuOct 29 Partly cloudy Partly cloudy38°61°

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 Gillette

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Air quality

23
Good
Ozone

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

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

Sun & moon

Sunrise 7:25 AM
Sunset 6:09 PM
Daylight 10 h 44 min (−2 min 54 s tomorrow)
Waxing Gibbous · 75% lit
Moonrise 3:59 PM Moonset 2:18 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low57° / 32°
Record high81° (1992)
Record low7° (1949)
Wettest0.24 in (2008)
Month to date0.34 in (normal 1.14 in)

Gillette 3se, records since 1902. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Forecasters' discussion

From the National Weather Service office in UNR, issued 3 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.