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 >

Hazardous Weather Conditions

Severe Thunderstorm Watch in effect from June 14, 06:15 PM MDT until June 15, 01:00 AM MDT

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Mostly Cloudy

61°F

16°C

Humidity	87%
Wind Speed	WNW 5 MPH
Barometer	30.07 in (1018.29 mb)
Dewpoint	57°F (14°C)
Visibility	10.00 mi
Last update	15 Jun 12:20 AM MDT

More Information:

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

Extended Forecast for

Lewistown Municipal MT

Severe T-storm Watch until June 15, 01:00am

Click here for hazard details and duration

...

Severe T-storm Watch until June 15, 01:00am
NOW until 1:00am Sun
Severe T-storm Watch
Overnight
Low: 51 °F
Severe
Thunderstorms
Sunday
High: 76 °F
Chance
Showers then
T-storms
Sunday Night
Low: 49 °F
Showers then
Slight Chance
Showers
Monday
High: 72 °F
Slight Chance
Showers then
Chance
Showers
Monday Night
Low: 49 °F
Showers
Likely
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

Overnight

Showers and thunderstorms likely, mainly before 2am. Some of the storms could be severe. Mostly cloudy, with a low around 51. East southeast wind 3 to 5 mph. Chance of precipitation is 60%.

Sunday

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 5pm. High near 76. Light and variable wind becoming north northeast 5 to 7 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. Northeast wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday

A 50 percent chance of showers, mainly after noon. Partly sunny, with a high near 72. Light and variable wind becoming north around 6 mph in the afternoon.

Monday Night

Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 49. North wind around 6 mph becoming south after midnight. Chance of precipitation is 60%.

Tuesday

A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 71. South southwest wind 5 to 7 mph becoming northwest in the afternoon. Chance of precipitation is 60%.

Tuesday Night

A 20 percent 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. South southwest wind 6 to 8 mph becoming west northwest in the afternoon.

Wednesday Night

Mostly clear, with a low around 48.

Juneteenth

Sunny, with a high near 77.

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 72.

Friday Night

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