Hamilton, MT Weather

Ravalli County6:39 AM MDT46.25°N, 114.16°WElevation 3,570 ft

Current conditions

Sunny
29°
Sunny
Feels like 29°
High 69°·Low 39°
WindSW 1 mph
Humidity98%
Dew point29°
Cloud cover16%
UV index0 Low
Sunrise8:03 AM
Sunset6:41 PM

Observed at STEVI · 1 hr ago

Forecast

10-day

  • Wednesday

    Sunny, with a high near 69. South southeast wind 2 to 6 mph.

  • Wednesday Night

    Partly cloudy, with a low around 39. South wind 2 to 6 mph.

  • Thursday

    A slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 68. South wind around 3 mph. Chance of precipitation is 20%.

National Weather Service forecast updated 4 hrs ago.

Hourly

Hourly forecast
  1. Now Sunny 39°
  2. 7 AM Sunny 38°
  3. 8 AM Mostly Sunny 37°
  4. 9 AM Mostly Sunny 39°
  5. 10 AM Sunny 45°
  6. 11 AM Sunny 50°
  7. 12 PM Sunny 56°
  8. 1 PM Sunny 60°
  9. 2 PM Sunny 65°
  10. 3 PM Sunny 67°
  11. 4 PM Mostly Sunny 67°
  12. 5 PM Mostly Sunny 68°
  13. 6 PM Partly Cloudy 65°
  14. 7 PM Partly Cloudy 61°
  15. 8 PM Mostly Clear 57°
  16. 9 PM Partly Cloudy 51°
  17. 10 PM Partly Cloudy 50°
  18. 11 PM Partly Cloudy 48°
  19. Thu12 AM Partly Cloudy 48°
  20. 1 AM Partly Cloudy 46°
  21. 2 AM Partly Cloudy 46°
  22. 3 AM Mostly Clear 44°
  23. 4 AM Partly Cloudy 44°
  24. 5 AM Mostly Clear 42°

10-day forecast

Details
  1. TonightOct 20 Mostly Clear Mostly Clear37°
  2. TodayOct 21 Sunny Sunny39°69°
  3. ThuOct 22 Mostly Sunny then Slight Chance Showers And Thunderstorms Mostly Sunny then Slight Chance Showers And Thunderstorms94%40°68°
  4. FriOct 23 Light Rain Light Rain93%29°48°
  5. SatOct 24 Mostly Sunny Mostly Sunny29°52°
  6. SunOct 25 Mostly Sunny Mostly Sunny10%28°54°
  7. MonOct 26 Slight Chance Light Snow Slight Chance Light Snow22%28°53°
  8. TueOct 27 Slight Chance Rain And Snow then Mostly Sunny Slight Chance Rain And Snow then Mostly Sunny23%53°
  9. WedOct 28 Rain Rain0.15 in31°43°
  10. ThuOct 29 Cloudy Cloudy30°51°

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 in Montana

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Air quality

14
Good
Fine particles (PM2.5)

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

Hamilton, 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 8:03 AM
Sunset 6:41 PM
Daylight 10 h 38 min (−3 min 7 s tomorrow)
Waxing Gibbous · 77% lit
Moonrise 4:38 PM Moonset 2:52 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Record high70° (2003)
Record low3° (1984)
Wettest1.00 in (1985)
Month to date0.70 in (normal 2.99 in)

Twin Lakes, records since 1983. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

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

Discussion

KEY MESSAGES:

- Mild daytime temperatures through Thursday.

- Patchy valley fog around sunrise each morning.

- Significant weather change coming Thursday night into Friday.

Mild day-time temperatures will continue across the Northern Rockies through Thursday as high pressure remains in control. Stable conditions under the ridge are promoting the development of daily valley inversions and trapped cold air, with patchy dense fog. Afternoon temperatures will run around 10 degrees above normal for this time of year.

A significant change remains on track late Thursday into Friday, as a low pressure system and cold front tracks across the region. Colder temperatures and widespread precipitation, focused along and south of the Interstate 90 corridor and along the divide in northwest Montana are the main story. Precipitation amounts have trended higher over the last 48 hours, as model guidance has come into stronger consensus for a mid-level low to track along the divide in southwest Montana by Friday morning. Widespread precipitation will wrap around the west-northwest area of this low pointing towards the highest precipitation amounts (0.75-1.50 inches) along the divide across mountain ranges in southwest Montana. As discussed previously, 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 across higher peaks along the divide, where several inches of snow may fall above 7,000 feet.

Aviation

High pressure will continue to bring stable conditions. Valley inversions and cold air pools will set the stage for patchy 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 KGPI and KMSO. The probability of dense fog impacts at these terminals is generally less than 10 percent, but can not be ruled out.

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