Butte, MT 59701 Weather

Silver Bow County11:15 PM MDT46.00°N, 112.60°W

Current conditions

Clear
39°
Clear
Feels like 39°
High 64° Wednesday·Low 35° tonight
WindCalm
Humidity75%
Dew point32°
Pressure30.22 inHg
Visibility10 mi
Cloud cover9%
UV index0 Low
Sunrise7:55 AM
Sunset6:37 PM

Observed at Butte, Bert Mooney Airport · 20 min ago

Forecast

10-day

  • Tonight

    Mostly clear, with a low around 35. Southeast wind around 7 mph.

  • Wednesday

    Sunny, with a high near 64. South wind 3 to 9 mph.

  • Wednesday Night

    Partly cloudy, with a low around 38. South southeast wind 6 to 9 mph.

National Weather Service forecast updated 9 hrs ago.

Hourly

Hourly forecast
  1. Now Mostly Clear 42°
  2. Wed12 AM Mostly Clear 40°
  3. 1 AM Mostly Clear 39°
  4. 2 AM Partly Cloudy 38°
  5. 3 AM Mostly Clear 37°
  6. 4 AM Partly Cloudy 37°
  7. 5 AM Partly Cloudy 37°
  8. 6 AM Sunny 36°
  9. 7 AM Sunny 35°
  10. 8 AM Sunny 35°
  11. 9 AM Sunny 38°
  12. 10 AM Sunny 45°
  13. 11 AM Sunny 50°
  14. 12 PM Sunny 56°
  15. 1 PM Sunny 60°
  16. 2 PM Mostly Sunny 62°
  17. 3 PM Mostly Sunny 63°
  18. 4 PM Mostly Sunny 64°
  19. 5 PM Sunny 62°
  20. 6 PM Partly Cloudy 61°
  21. 7 PM Partly Cloudy 58°
  22. 8 PM Partly Cloudy 52°
  23. 9 PM Partly Cloudy 50°
  24. 10 PM Partly Cloudy 47°

10-day forecast

Details
  1. TonightOct 20 Mostly Clear Mostly Clear35°
  2. WedOct 21 Sunny Sunny38°64°
  3. ThuOct 22 Sunny Sunny67%39°65°
  4. FriOct 23 Rain Rain94%27°46°
  5. SatOct 24 Mostly Sunny Mostly Sunny27°46°
  6. SunOct 25 Mostly Sunny Mostly Sunny26°48°
  7. MonOct 26 Mostly Sunny Mostly Sunny18%27°49°
  8. TueOct 27 Mostly Sunny Mostly Sunny14%50°
  9. WedOct 28 Mostly sunny Mostly sunny29°53°
  10. ThuOct 29 Cloudy Cloudy31°55°

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 Butte

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Air quality

43
Good
Fine particles (PM2.5)

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

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

Sun & moon

Sunrise 7:55 AM
Sunset 6:37 PM
Daylight 10 h 42 min (−3 min 6 s tomorrow)
Waxing Gibbous · 74% lit
Moonrise 4:12 PM Moonset 1:36 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low52° / 25°
Record high77° (1927)
Record low10° (1943)
Wettest0.40 in (1899)
Yesterday67° / 27°
Month to date1.16 in (normal 0.54 in)

Butte Bert Mooney Ap, records since 1894. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in MSO, issued 11 hrs ago

Discussion

KEY MESSAGES:

- Mild daytime temperatures through Thursday.

- Patchy valley fog around sunrise each morning.

- Significant weather change coming Friday into the weekend.

A broad ridge of high pressure will continue to bring mild daytime temperatures across the Northern Rockies through Thursday. Stable conditions under the ridge are promoting the development of daily valley inversions and trapped cold air, with patchy dense fog. Afternoon temperatures will continue to run 10 to 15 degrees above normal for this time of year. Forecast models suggest a few isolated showers developing over Lemhi County this afternoon, then over southwest and west-central Montana tomorrow afternoon and evening.

Expect a significant change as a low pressure system and cold front track across the region Thursday night into Friday. The front will bring wind gusts around 20 mph in Idaho and 20 to 35 mph across most of western Montana on Friday. Moisture with this system will move north from the Great Basin, with precipitation focusing along and south of the I-90 corridor and along the Continental Divide in northwest Montana. Most of the precipitation will fall as rain ahead of the cold front, limiting the potential for winter weather impacts. Snow levels will fall to around 5,000 feet Friday and lower over the weekend as shower activity begins to decrease. Therefore, forecast snow amounts will be generally under an inch across the region and above 5,000 feet. The exception is the higher elevations of the Flathead National Forest and Glacier National Park, which will likely pick up several inches of snow this weekend.

Aviation

Stable conditions will continue today under a ridge of high pressure. Valley inversions and cold air pools will set the stage for areas of valley fog, particularly near large bodies of water and river systems. The primary period to watch will be from 21/1200-1500Z, including Terminal KMSO. Fog can not be ruled out at KGPI as well, but the probability of impacts is less than 10 percent as high cloud cover has reduced overnight cooling.

Mso Watches

MT...None. ID...None.

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.