National Weather Service

News Headlines

Severe Thunderstorm Reports June 13 2025

Hazardous Weather Conditions

Severe Thunderstorm Watch in effect from June 15, 02:15 PM MDT until June 15, 11:00 PM MDT

Current conditions at

HORSE THIEF (HORM8)

Lat: 46.42581°NLon: 108.6745°WElev: 3414.0ft.

81°F

27°C

Humidity	41%
Wind Speed	ESE 5 MPH
Barometer	NA
Dewpoint	55°F (13°C)
Visibility	NA
Heat Index	81°F (27°C)
Last update	15 Jun 06:39 PM MDT

More Information:

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

Extended Forecast for

Roundup MT

Severe T-storm Watch until June 15, 11:00pm

Click here for hazard details and duration

...

Severe T-storm Watch until June 15, 11:00pm
NOW until 11:00pm Sun
Severe T-storm Watch
Tonight
Low: 54 °F
Severe
Thunderstorms
and Patchy
Fog
Monday
High: 79 °F
Slight Chance
Showers then
Chance
T-storms
Monday Night
Low: 54 °F
Showers
Likely
Tuesday
High: 75 °F
Showers
Likely
Tuesday Night
Low: 52 °F
Mostly Clear
Wednesday
High: 83 °F
Sunny
Wednesday Night
Low: 55 °F
Mostly Clear
Juneteenth
High: 86 °F
Sunny

Detailed Forecast

Tonight

A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and midnight, then a slight chance of showers and thunderstorms after midnight. Some of the storms could be severe. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 54. North northeast wind around 6 mph becoming calm after midnight. Chance of precipitation is 60%.

Monday

A slight chance of showers between 9am and noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 79. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 40%.

Monday Night

Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 54. North northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%.

Tuesday

Showers likely, with thunderstorms also possible after 9am. Mostly cloudy, with a high near 75. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 60%.

Tuesday Night

Mostly clear, with a low around 52. Light and variable wind.

Wednesday

Sunny, with a high near 83. West wind 3 to 7 mph.

Wednesday Night

Mostly clear, with a low around 55. West wind 5 to 7 mph becoming calm in the evening.

Juneteenth

Sunny, with a high near 86. Calm wind becoming east northeast 5 to 8 mph in the afternoon.

Thursday Night

A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 56. North northeast wind 5 to 9 mph. Chance of precipitation is 40%.

Friday

A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83. Light and variable wind becoming south 5 to 9 mph in the morning.

Friday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 53. North wind 6 to 9 mph.

Saturday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76. North northeast wind 5 to 11 mph.

Saturday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 48. North wind around 11 mph. Chance of precipitation is 60%.

Sunday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 64. Northwest wind 9 to 14 mph.