Areas of Severe Thunderstorms and Excessive Rainfall; Heat Wave Builds in the Intermountain West and Plains

A slow moving front will bring rounds of strong to severe thunderstorms and heavy rainfall to the central Plains eastward to the east-central U.S.. The first widespread significant heat wave of summer for the Intermountain West and Plains is expected to develop today and expand through next week. Dangerous heat will continue to impact portions of the Southwest and Southeast. Read More >

Hazardous Weather Conditions

Heat Advisory in effect from July 11, 12:00 PM MDT until July 13, 09:00 PM MDT

Current conditions at

Helena Regional Airport (KHLN)

Lat: 46.60445°NLon: 111.9892°WElev: 3874.0ft.

Clear

57°F

14°C

Humidity	58%
Wind Speed	N 0 MPH
Barometer	29.98 in (1015.24 mb)
Dewpoint	43°F (6°C)
Visibility	10.00 mi
Last update	10 Jul 06:05 AM MDT

More Information:

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

Extended Forecast for

2 Miles N East Helena MT

Heat Advisory July 11, 12:00pm until July 13, 09:00pm

Click here for hazard details and duration

Heat Advisory

Today
High: 91 °F
Sunny
Tonight
Low: 58 °F
Slight Chance
T-storms then
Mostly Clear
Saturday
High: 97 °F
Hot
Saturday Night
Low: 61 °F
Mostly Clear
Sunday
High: 99 °F
Hot
Sunday Night
Low: 64 °F
Mostly Cloudy
Monday
High: 96 °F
Hot
Monday Night
Low: 63 °F
Slight Chance
T-storms then
Slight Chance
Showers
Tuesday
High: 89 °F
Mostly Sunny
then Slight
Chance
T-storms

Detailed Forecast

Today

Sunny, with a high near 91. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph.

Tonight

A slight chance of showers and thunderstorms between 7pm and 9pm. Mostly clear, with a low around 58. East wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 20%.

Saturday

Sunny and hot, with a high near 97. Light and variable wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 23 mph.

Saturday Night

Mostly clear, with a low around 61. West wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 18 mph.

Sunday

Mostly sunny and hot, with a high near 99. Calm wind becoming west northwest 5 to 8 mph in the afternoon. Winds could gust as high as 21 mph.

Sunday Night

Mostly cloudy, with a low around 64. Northwest wind 8 to 13 mph becoming light west southwest after midnight. Winds could gust as high as 22 mph.

Monday

Mostly sunny and hot, with a high near 96. Calm wind becoming east northeast around 5 mph in the afternoon.

Monday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 63. East northeast wind around 6 mph becoming calm after midnight.