Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.

Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >

Hazardous Weather Conditions

Frost Advisory in effect from May 19, 12:00 AM MDT until May 19, 09:00 AM MDT

Current conditions at

Ravalli County Airport (KHRF)

Lat: 46.25463°NLon: 114.1246°WElev: 3644.0ft.

Clear

39°F

4°C

Humidity	55%
Wind Speed	SSW 5 MPH
Barometer	30.17 in (1021.67 mb)
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Wind Chill	35°F (2°C)
Last update	19 May 03:15 AM MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Hamilton MT

Frost Advisory until May 19, 09:00am

Click here for hazard details and duration

Frost Advisory

Frost Advisory until May 19, 09:00am
NOW until 9:00am Tue
Frost Advisory
Overnight
Low: 29 °F
Frost
Tuesday
High: 65 °F
Frost then
Partly Sunny
Tuesday Night
Low: 37 °F
Mostly Cloudy
Wednesday
High: 65 °F
Partly Sunny
then Showers
Likely
Wednesday Night
Low: 38 °F
Showers
Likely
Thursday
High: 67 °F
Mostly Sunny
Thursday Night
Low: 40 °F
Partly Cloudy
Friday
High: 73 °F
Sunny

Detailed Forecast

Overnight

Widespread frost, mainly after 4am. Otherwise, partly cloudy, with a low around 29. Light south wind.

Tuesday

Widespread frost, mainly before 7am. Otherwise, partly sunny, with a high near 65. Calm wind becoming north northwest 5 to 8 mph in the afternoon.

Tuesday Night

Mostly cloudy, with a low around 37. Northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph.

Wednesday

A slight chance of rain before 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 65. Calm wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 60%.

Wednesday Night

Showers likely and possibly a thunderstorm before 9pm, then rain likely, mainly between 9pm and midnight. Mostly cloudy, with a low around 38. North northwest wind 6 to 11 mph becoming light north after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 70%.

Thursday

Mostly sunny, with a high near 67.

Thursday Night

Partly cloudy, with a low around 40.

Friday

Sunny, with a high near 73.

Friday Night

Partly cloudy, with a low around 42.

Saturday

Sunny, with a high near 76.

Saturday Night

Partly cloudy, with a low around 44.