Widespread Showers in the Eastern US; Severe Thunderstorms in the Plains; Heatwave in the Desert Southwest

Widespread showers and thunderstorms across much of the central and eastern U.S. will produce areas of excessive rainfall, especially in the southern Mid-Atlantic states. Scattered severe thunderstorms are expected from Montana into portions of the central/southern Plains this weekend. A heatwave will build in the Desert Southwest, in parts of Arizona, southeastern California, and southern Nevada. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

75°F

24°C

Humidity	50%
Wind Speed	E 10 MPH
Barometer	29.99 in (1015.58 mb)
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Last update	14 Jun 05:00 PM MDT

More Information:

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

Extended Forecast for

Lewistown MT

This Afternoon
High: 76 °F
Chance
T-storms
Tonight
Low: 52 °F
Severe
Thunderstorms
Sunday
High: 77 °F
Chance
Showers then
Showers
Sunday Night
Low: 49 °F
Showers then
Slight Chance
Showers
Monday
High: 73 °F
Slight Chance
Showers then
Chance
Showers
Monday Night
Low: 49 °F
Chance
Showers
Tuesday
High: 71 °F
Showers
Likely
Tuesday Night
Low: 48 °F
Slight Chance
T-storms then
Mostly Clear
Wednesday
High: 75 °F
Sunny

Detailed Forecast

This Afternoon

A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 76. Northeast wind around 5 mph.

Tonight

Showers and thunderstorms likely, mainly before 4am. Some of the storms could be severe. Mostly cloudy, with a low around 52. East northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 5pm. High near 77. Calm wind becoming east northeast around 6 mph in the afternoon. Chance of precipitation is 80%.

Sunday Night

Showers and possibly a thunderstorm before midnight, then a slight chance of showers. Low around 49. East northeast wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 80%.

Monday

A 50 percent chance of showers, mainly after noon. Partly sunny, with a high near 73. Calm wind becoming north around 5 mph in the afternoon.

Monday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. North wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 50%.

Tuesday

A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 71. Light and variable wind becoming west northwest around 6 mph in the afternoon. Chance of precipitation is 60%.

Tuesday Night

A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 48. West northwest wind around 6 mph becoming south in the evening.

Wednesday

Sunny, with a high near 75.

Wednesday Night

Mostly clear, with a low around 48.

Juneteenth

Sunny, with a high near 78.

Thursday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 48.

Friday

A chance of showers and thunderstorms. Mostly sunny, with a high near 73.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 46.