Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Current conditions at

Helena Regional Airport (KHLN)

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

Clear

52°F

11°C

Humidity	57%
Wind Speed	N 0 MPH
Barometer	30.06 in (1017.95 mb)
Dewpoint	37°F (3°C)
Visibility	10.00 mi
Last update	31 Aug 05:00 AM MDT

More Information:

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

Extended Forecast for

Helena MT

Today
High: 78 °F
Sunny
Tonight
Low: 49 °F
Increasing
Clouds
Tuesday
High: 84 °F
Gradual
Clearing
Tuesday Night
Low: 53 °F
Showers
Likely then
Slight Chance
Showers
Wednesday
High: 78 °F
Slight Chance
Showers then
Chance
Showers
Wednesday Night
Low: 49 °F
Mostly Cloudy
Thursday
High: 76 °F
Mostly Sunny
Thursday Night
Low: 47 °F
Partly Cloudy
Friday
High: 78 °F
Mostly Sunny

Detailed Forecast

Today

Sunny, with a high near 78. Calm wind becoming east 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

Tonight

Increasing clouds, with a low around 49. East wind 5 to 7 mph becoming calm in the evening.

Tuesday

Cloudy through mid morning, then gradual clearing, with a high near 84. Calm wind becoming east southeast 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

Tuesday Night

Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 53. South southwest wind 5 to 9 mph becoming light and variable after midnight. Chance of precipitation is 60%.

Wednesday

A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 78. Light south wind becoming south southwest 6 to 11 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 50%.

Wednesday Night

Mostly cloudy, with a low around 49. South southwest wind 5 to 11 mph, with gusts as high as 23 mph.

Thursday

Mostly sunny, with a high near 76. Light south southwest wind becoming west southwest 9 to 14 mph in the afternoon. Winds could gust as high as 28 mph.

Thursday Night

Partly cloudy, with a low around 47. West wind 5 to 10 mph becoming light west southwest after midnight. Winds could gust as high as 23 mph.

Friday

Mostly sunny, with a high near 78.

Friday Night

Partly cloudy, with a low around 49.

Saturday

Sunny, with a high near 79.

Saturday Night

Partly cloudy, with a low around 51.

Sunday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 79.