Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

HELENA VALLEY (HVMT)

Lat: 46.67917°NLon: 111.98333°WElev: 3673.0ft.

77°F

25°C

Humidity	35%
Wind Speed	N 2 MPH
Barometer	NA
Dewpoint	48°F (9°C)
Visibility	NA
Heat Index	78°F (26°C)
Last update	17 Aug 07:00 PM MDT

More Information:

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

Extended Forecast for

11 Miles ENE East Helena MT

Tonight
Low: 54 °F
Slight Chance
T-storms then
Mostly Cloudy
Tuesday
High: 83 °F
Mostly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 53 °F
Slight Chance
T-storms then
Partly Cloudy
Wednesday
High: 85 °F
Sunny
Wednesday Night
Low: 55 °F
Mostly Clear
Thursday
High: 89 °F
Sunny
Thursday Night
Low: 55 °F
Mostly Clear
Friday
High: 89 °F
Mostly Sunny
Friday Night
Low: 58 °F
Slight Chance
Showers then
Mostly Cloudy

Detailed Forecast

Tonight

A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54. Northwest wind 5 to 7 mph becoming calm in the evening.

Tuesday

A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83. Light and variable wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

Tuesday Night

A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 53. West wind 5 to 7 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

Wednesday

Sunny, with a high near 85. Light and variable wind becoming west around 6 mph in the afternoon.

Wednesday Night

Mostly clear, with a low around 55. West northwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 20 mph.

Thursday

Sunny, with a high near 89. Light and variable wind.

Thursday Night

Mostly clear, with a low around 55. Northwest wind around 5 mph becoming calm after midnight.

Friday

Mostly sunny, with a high near 89. Light and variable wind.

Friday Night

A slight chance of showers before midnight. Mostly cloudy, with a low around 58.