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.

Partly Cloudy

41°F

5°C

Humidity	70%
Wind Speed	WNW 8 MPH
Barometer	29.99 in (1015.58 mb)
Dewpoint	32°F (0°C)
Visibility	10.00 mi
Wind Chill	36°F (2°C)
Last update	21 May 04:53 AM MDT

More Information:

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

Extended Forecast for

5 Miles S 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: 53 °F
Mostly Sunny
then Chance
Showers
Tonight
Low: 38 °F
Slight Chance
T-storms then
Mostly Cloudy
Wednesday
High: 49 °F
Chance
Rain/Snow
then Showers
Wednesday Night
Low: 32 °F
Rain/Snow
then Snow
Showers
Thursday
High: 41 °F
Heavy Snow
Thursday Night
Low: 29 °F
Slight Chance
Rain/Snow
then Partly
Cloudy
Friday
High: 52 °F
Mostly Sunny
then Slight
Chance
T-storms
Friday Night
Low: 36 °F
Slight Chance
Rain then
Mostly Cloudy
Saturday
High: 52 °F
Showers
Likely

Detailed Forecast

Today

A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 53. West northwest wind 9 to 11 mph, with gusts as high as 21 mph.

Tonight

A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 38. West wind 6 to 11 mph becoming south southwest after midnight. Winds could gust as high as 20 mph.

Wednesday

A chance of rain and snow before 10am, then a chance of rain between 10am and noon, then rain showers after noon. Some thunder is also possible. High near 49. South southwest wind 6 to 8 mph becoming northwest in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.

Wednesday Night

Rain showers before 9pm, then rain and snow showers between 9pm and midnight, then snow showers after midnight. Some thunder is also possible. Low around 32. North northwest wind 8 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

Thursday

Snow before noon, then snow showers after noon. The snow could be heavy at times. Some thunder is also possible. High near 41. Northwest wind 11 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Thursday Night

A slight chance of rain and snow before midnight. Partly cloudy, with a low around 29. Northwest wind 8 to 10 mph becoming southwest after midnight. Chance of precipitation is 20%.

Friday

A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 52. South wind 7 to 9 mph.

Friday Night

A slight chance of rain before midnight. Mostly cloudy, with a low around 36. South southwest wind 8 to 10 mph.

Saturday

A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 52.

Saturday Night

A chance of rain before 9pm, then a chance of rain and snow between 9pm and 3am, then a chance of snow after 3am. Mostly cloudy, with a low around 33.

Sunday

A chance of rain and snow. Partly sunny, with a high near 50.

Sunday Night

A slight chance of rain. Partly cloudy, with a low around 34.

Memorial Day

A slight chance of rain. Sunny, with a high near 61.