Record Heat for the Intermountain West and Northern Plains; Heavy Rainfall and Severe Weather Threats

Record setting heat is expected over the next several days from the Intermountain West through the northern Plains. Furthermore, fire weather concerns increase with dry and breezy conditions. Meanwhile, heavy rainfall and severe thunderstorm threats for the Ohio/Tennessee Valleys, central Appalachians and Southeast today. The threat shifts to central Gulf Coast and across central Texas this week. Read More >

Hazardous Weather Conditions

Heat Advisory until July 13, 09:00 PM MDT

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Mostly Cloudy

N/A

Humidity	72%
Wind Speed	W 8 MPH
Barometer	NA
Dewpoint	N/A
Visibility	10.00 mi
Last update	27 Jun 08:20 PM MDT

More Information:

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

Extended Forecast for

Lewistown MT

Heat Advisory July 12, 01:45pm until July 13, 09:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory July 12, 01:45pm until July 13, 09:00pm
NOW until 9:00pm Mon
Heat Advisory
This Afternoon
High: 105 °F
Hot
Tonight
Low: 59 °F
Slight Chance
T-storms then
Partly Cloudy
Monday
High: 94 °F
Sunny
Monday Night
Low: 59 °F
Partly Cloudy
Tuesday
High: 91 °F
Mostly Sunny
Tuesday Night
Low: 57 °F
Showers
Likely
Wednesday
High: 86 °F
Showers
Likely
Wednesday Night
Low: 56 °F
Chance
T-storms then
Slight Chance
Showers

Detailed Forecast

This Afternoon

Mostly sunny and hot, with a high near 105. South southwest wind 11 to 14 mph, with gusts as high as 29 mph.

Tonight

A slight chance of thunderstorms before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 59. Northwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 20%.

Monday

Sunny, with a high near 94. Light and variable wind becoming east southeast 9 to 14 mph in the afternoon. Winds could gust as high as 24 mph.

Monday Night

Partly cloudy, with a low around 59. East southeast wind 5 to 14 mph, with gusts as high as 25 mph.

Tuesday

Mostly sunny, with a high near 91. Light east southeast wind becoming east 6 to 11 mph in the morning. Winds could gust as high as 21 mph.

Tuesday Night

Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 57. East northeast wind 5 to 10 mph becoming light east after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 60%.

Wednesday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 86. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 60%.

Wednesday Night

A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 56. East northeast wind around 5 mph becoming calm after midnight.

Thursday

A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87.

Thursday Night

A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 57.

Friday

Mostly sunny, with a high near 90.

Friday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 58.

Saturday

Sunny, with a high near 87.