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June 2026 Weather Summary

Hazardous Weather Conditions

Extreme Heat Watch in effect from July 11, 06:00 AM MDT until July 13, 06:00 AM MDT

Current conditions at

HORSE THIEF (HORM8)

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

80°F

27°C

Humidity	31%
Wind Speed	SW 5 MPH
Barometer	NA
Dewpoint	47°F (8°C)
Visibility	NA
Heat Index	79°F (26°C)
Last update	09 Jul 09:39 AM MDT

More Information:

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

Extended Forecast for

Roundup MT

Extreme Heat Watch July 11, 06:00am until July 13, 06:00am

Click here for hazard details and duration

Extreme Heat Watch

Today
High: 92 °F
Hot
Tonight
Low: 60 °F
Mostly Clear
Friday
High: 97 °F
Hot
Friday Night
Low: 62 °F
Slight Chance
T-storms then
Mostly Clear
Saturday
High: 105 °F
Hot
Saturday Night
Low: 66 °F
Mostly Clear
Sunday
High: 106 °F
Hot
Sunday Night
Low: 70 °F
Partly Cloudy
Monday
High: 97 °F
Hot

Detailed Forecast

Today

Sunny and hot, with a high near 92. West northwest wind 5 to 9 mph.

Tonight

Mostly clear, with a low around 60. West northwest wind 5 to 8 mph becoming calm after midnight.

Friday

Sunny and hot, with a high near 97. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

Friday Night

A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly clear, with a low around 62. Light and variable wind. Chance of precipitation is 20%.

Saturday

Sunny and hot, with a high near 105. Southwest wind 5 to 10 mph.

Saturday Night

Mostly clear, with a low around 66. West wind 5 to 8 mph becoming light and variable after midnight.

Sunday

Sunny and hot, with a high near 106. West wind 5 to 13 mph becoming south in the afternoon.

Sunday Night

Partly cloudy, with a low around 70. South wind 8 to 15 mph becoming north after midnight.

Monday

Sunny and hot, with a high near 97. North northwest wind 8 to 13 mph becoming east northeast in the afternoon.

Monday Night

Partly cloudy, with a low around 68. East northeast wind 6 to 14 mph.

Tuesday

Mostly sunny and hot, with a high near 92. North northeast wind 6 to 10 mph.

Tuesday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. North wind 5 to 10 mph.

Wednesday

A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95. Light and variable wind becoming east 5 to 8 mph in the morning.