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 >

Current conditions at

HELENA (HRWM8)

Lat: 46.73167°NLon: 112.01917°WElev: 3800.0ft.

90°F

32°C

Humidity	18%
Wind Speed	S 7 MPH
Barometer	NA
Dewpoint	41°F (5°C)
Visibility	NA
Heat Index	86°F (30°C)
Last update	10 Jul 05:53 PM MDT

More Information:

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

Extended Forecast for

4 Miles SSE Marysville MT

Tonight
Low: 59 °F
Slight Chance
Showers then
Mostly Clear
Saturday
High: 86 °F
Sunny
Saturday Night
Low: 62 °F
Mostly Cloudy
Sunday
High: 87 °F
Decreasing
Clouds
Sunday Night
Low: 63 °F
Mostly Cloudy
Monday
High: 84 °F
Mostly Sunny
Monday Night
Low: 64 °F
Chance
Showers
Tuesday
High: 79 °F
Mostly Sunny
then Chance
T-storms
Tuesday Night
Low: 60 °F
Showers
Likely

Detailed Forecast

Tonight

A slight chance of showers between 8pm and 11pm. Mostly clear, with a low around 59. South wind around 6 mph becoming light and variable. Chance of precipitation is 20%.

Saturday

Sunny, with a high near 86. West southwest wind 6 to 15 mph, with gusts as high as 29 mph.

Saturday Night

Clear during the early evening, then becoming mostly cloudy, with a low around 62. West wind 6 to 11 mph, with gusts as high as 22 mph.

Sunday

Cloudy, then gradually becoming mostly sunny, with a high near 87. South southwest wind 7 to 15 mph, with gusts as high as 28 mph.

Sunday Night

Mostly cloudy, with a low around 63. West wind 6 to 14 mph, with gusts as high as 25 mph.

Monday

Mostly sunny, with a high near 84. Light and variable wind becoming north 5 to 7 mph in the afternoon.

Monday Night

A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 64. North wind around 7 mph becoming west southwest in the evening. Chance of precipitation is 30%.

Tuesday

A chance of showers and thunderstorms after noon. Partly sunny, with a high near 79. West northwest wind 6 to 9 mph becoming north in the afternoon.

Tuesday Night

Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 60.

Wednesday

A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 77.

Wednesday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 59.

Thursday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 78.

Thursday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 59.