Active Weather Pattern Expected From the Midwest to the Southern Plains; Dangerous Heat Likely in Southern Texas

A strong storm system will bring numerous to widespread severe thunderstorms across portions of the Midwest and Upper Great Lakes Tuesday. Tornadoes (a few strong), damaging winds and large hail are expected. Record high temperatures will be possible over southern Texas the next several days. This may lead to dangerous heat concerns especially for areas already without power. Read More >

Hazardous Weather Conditions

Winter Storm Watch in effect from May 22, 06:00 PM MDT until May 23, 12:00 PM MDT

Current conditions at

Helena Regional Airport (KHLN)

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

Clear

41°F

5°C

Humidity	70%
Wind Speed	SSW 3 MPH
Barometer	30.01 in (1016.26 mb)
Dewpoint	32°F (0°C)
Visibility	10.00 mi
Last update	21 May 05:53 AM MDT

More Information:

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

Extended Forecast for

6 Miles ESE East Helena MT

Winter Storm Watch May 22, 06:00pm until May 23, 12:00pm

Click here for hazard details and duration

Winter Storm Watch

Today
High: 62 °F
Mostly Sunny
then Chance
Showers
Tonight
Low: 42 °F
Slight Chance
T-storms then
Mostly Cloudy
Wednesday
High: 57 °F
Chance Rain
then Showers
Wednesday Night
Low: 38 °F
Showers
Thursday
High: 48 °F
Showers
Thursday Night
Low: 34 °F
Slight Chance
Rain then
Partly Cloudy
Friday
High: 61 °F
Mostly Sunny
then Slight
Chance
T-storms
Friday Night
Low: 41 °F
Slight Chance
Rain then
Mostly Cloudy
Saturday
High: 60 °F
Showers
Likely

Detailed Forecast

Today

A 30 percent chance of showers and thunderstorms, mainly between 1pm and 5pm. Increasing clouds, with a high near 62. West northwest wind 6 to 11 mph, with gusts as high as 22 mph.

Tonight

A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 42. West northwest wind 5 to 11 mph becoming east southeast after midnight. Winds could gust as high as 21 mph.

Wednesday

A chance of rain, then showers and possibly a thunderstorm after noon. High near 57. South wind 5 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers and possibly a thunderstorm. Low around 38. North northwest wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 100%.

Thursday

Rain before noon, then showers and possibly a thunderstorm after noon. High near 48. Northwest wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.

Thursday Night

A 20 percent chance of rain before midnight. Partly cloudy, with a low around 34. Northwest wind 6 to 10 mph becoming south southwest after midnight.

Friday

A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 61. South southeast wind 6 to 9 mph, with gusts as high as 18 mph.

Friday Night

A slight chance of rain before midnight. Mostly cloudy, with a low around 41. South wind 6 to 10 mph.

Saturday

A slight chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 60.

Saturday Night

A chance of rain. Mostly cloudy, with a low around 37.

Sunday

A chance of rain. Partly sunny, with a high near 58.

Sunday Night

A slight chance of rain. Partly cloudy, with a low around 39.

Memorial Day

Sunny, with a high near 68.