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 >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

Lat: 47.04917°NLon: 109.46639°WElev: 4167.0ft.

Mostly Cloudy

39°F

4°C

Humidity	69%
Wind Speed	E 3 MPH
Barometer	29.84 in (1010.5 mb)
Dewpoint	30°F (-1°C)
Visibility	10.00 mi
Last update	22 May 01:05 AM MDT

More Information:

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

Extended Forecast for

Lewistown MT

Overnight
Low: 38 °F
Mostly Cloudy
Wednesday
High: 57 °F
Chance Rain
then Showers
Likely
Wednesday Night
Low: 33 °F
Showers and
Patchy Fog
Thursday
High: 44 °F
Rain/Snow
Thursday Night
Low: 31 °F
Chance Rain
then Partly
Cloudy
Friday
High: 61 °F
Partly Sunny
then Chance
Showers
Friday Night
Low: 38 °F
Slight Chance
T-storms then
Mostly Cloudy
Saturday
High: 63 °F
Partly Sunny
then Showers
Likely
Saturday Night
Low: 39 °F
Showers
Likely

Detailed Forecast

Overnight

Mostly cloudy, with a low around 38. South wind around 6 mph.

Wednesday

A chance of rain, then showers likely and possibly a thunderstorm after 3pm. Cloudy, with a high near 57. Light and variable wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 70%.

Wednesday Night

Showers and possibly a thunderstorm. Patchy fog between 2am and 3am. Low around 33. North northeast wind 5 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Thursday

Rain, possibly mixed with snow before noon, then rain and snow showers between noon and 3pm, then rain showers after 3pm. Some thunder is also possible. High near 44. North wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday Night

A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 31. North northwest wind 6 to 9 mph becoming south southwest after midnight.

Friday

A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 61. South southwest wind 6 to 8 mph becoming west in the afternoon.

Friday Night

A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 38. West wind 5 to 7 mph becoming south southwest after midnight.

Saturday

Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 63. South southwest wind 5 to 8 mph becoming northwest in the afternoon.

Saturday Night

Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 39.

Sunday

A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 58.

Sunday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 38.

Memorial Day

A slight chance of rain. Mostly sunny, with a high near 68.

Monday Night

Mostly clear, with a low around 43.

Tuesday

Sunny, with a high near 75.