Lewistown, MT Weather

Fergus County7:16 AM MDT47.06°N, 109.43°WElevation 3,947 ft

Current conditions

Mostly Sunny
24°
Mostly Sunny
Feels like 16°
High 42°·Low 23°
WindW 7 mph gusts 20 mph
Humidity85%
Dew point20°
Cloud cover40%
UV index0 Low
Sunrise7:49 AM
Sunset6:16 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day

  • Saturday

    Mostly sunny, with a high near 42. West wind 1 to 7 mph, with gusts as high as 20 mph.

  • Saturday Night

    Mostly clear, with a low around 23. East wind 2 to 6 mph.

  • Sunday

    Mostly sunny, with a high near 43. East wind 2 to 6 mph.

National Weather Service forecast updated 2 days ago.

Hourly

Hourly forecast
  1. Now Mostly Sunny 24°
  2. 8 AM Mostly Sunny 25°
  3. 9 AM Mostly Sunny 26°
  4. 10 AM Mostly Sunny 30°
  5. 11 AM Mostly Sunny 34°
  6. 12 PM Sunny 38°
  7. 1 PM Sunny 40°
  8. 2 PM Sunny 41°
  9. 3 PM Sunny 42°
  10. 4 PM Sunny 41°
  11. 5 PM Sunny 39°
  12. 6 PM Mostly Clear 37°
  13. 7 PM Mostly Clear 34°
  14. 8 PM Mostly Clear 32°
  15. 9 PM Mostly Clear 30°
  16. 10 PM Mostly Clear 29°
  17. 11 PM Mostly Clear 28°
  18. Sun12 AM Partly Cloudy 28°
  19. 1 AM Partly Cloudy 27°
  20. 2 AM Partly Cloudy 26°
  21. 3 AM Partly Cloudy 25°
  22. 4 AM Partly Cloudy 25°
  23. 5 AM Partly Cloudy 25°
  24. 6 AM Mostly Sunny 26°

10-day forecast

Details
  1. TonightOct 21 Mostly Clear Mostly Clear45°
  2. ThuOct 22 Sunny Sunny15%45°75°
  3. FriOct 23 Rain Rain0.7 in snow96%24°54°
  4. TodayOct 24 Mostly Sunny Mostly Sunny<0.1 in snow23°42°
  5. SunOct 25 Mostly Sunny Mostly Sunny15%22°43°
  6. MonOct 26 Partly Sunny Partly Sunny15%26°48°
  7. TueOct 27 Chance Rain And Snow Chance Rain And Snow33%26°50°
  8. WedOct 28 Slight Chance Light Snow then Mostly Sunny Slight Chance Light Snow then Mostly Sunny0.3 in snow20%45°
  9. ThuOct 29 Sunny Sunny21°43°
  10. FriOct 30 Sunny Sunny27°48°

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

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news near Lewistown

More weather news

Air quality

31
Good
Ozone

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

Lewistown, 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 7:49 AM
Sunset 6:16 PM
Daylight 10 h 26 min (−3 min 10 s tomorrow)
Waxing Gibbous · 97% lit
Moonrise 5:10 PM Moonset 6:05 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low52° / 28°
Month to date0.71 in (normal 1.01 in)

Lewistown Ap, records since 1896. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Forecasters' discussion

From the National Weather Service office in TFX, issued 3 hrs ago

Key Messages

- Drier and cooler conditions expected the next several days.

- The next chance for precipitation arrives on Monday evening.

Discussion

- Meteorological Overview: The storm system that produced the widespread rain/snow on Friday has exited the area already this morning. In its wake, mainly some low clouds, along with patchy fog, but much cooler temperatures have also moved into the region. The fog should thin out by late morning, otherwise expect below normal temperatures this afternoon.

The below normal temperatures are likely to last most of the week for much of the region.

The next weather system arrives Monday night into Tuesday, as an upper level low approaches from the west. At this time, precipitation amounts look to be a bit lighter than this past weather system.

- Forecast Confidence & Scenarios: The main concern with the next weather system will once again be when does the rain change to snow. The airmass will be cooler, so it is likely that snow levels will start out quite a bit lower. The main question is will the rain to change all the way down to plains/valley floors? The forecast models vary, with some models keeping the snow level above 4500 feet, thus rain falling at the lowest elevations. Also, precipitation amounts should be lighter with this system, thus right now it looks like the highest potential for any winter statements will mainly be in the mountain areas south of I-90 from Butte to Bozeman. Brusda

Aviation

24/06Z TAF Period

Low ceilings and patchy fog will affect portions of the CWA through this morning. Expect ceiling to rise by late morning, while the fog also begins to thin out. Dry conditions are expected across the CWA through the period. Mountains/passes will be obscured at times through this morning by low ceilings/fog. Brusda

Preliminary Point Temps

GTF 40 22 35 22 / 0 0 0 0 CTB 41 22 38 20 / 0 0 0 0 HLN 42 23 39 23 / 0 0 0 0 BZN 41 20 43 19 / 0 0 0 0 WYS 45 14 52 17 / 0 0 0 0 DLN 43 24 45 26 / 0 0 0 0 HVR 44 20 44 22 / 0 0 0 0 LWT 41 20 39 23 / 0 0 0 0

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 4Conservative index and reflects what the press published. Terms of use.