Heavy to Excessive Rainfall and Flooding Threats in the Central and Eastern U.S.; Heat and Fire Weather Concerns in the West

Thunderstorms producing excessive rainfall and potential flooding concerns will continue through tonight from the Southern Plains to the East Coast. Areas of greatest concern for flooding are over central Texas and the Mid-Atlantic. Heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue through Monday. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

84°F

29°C

Humidity	25%
Wind Speed	N 4 MPH
Barometer	30.08 in (1018.63 mb)
Dewpoint	45°F (7°C)
Visibility	10.00 mi
Heat Index	82°F (28°C)
Last update	13 Jul 07:30 PM MDT

More Information:

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

Extended Forecast for

Lewistown MTSimilar City Names

Tonight
Low: 58 °F
Mostly Clear
Monday
High: 90 °F
Sunny then
Slight Chance
T-storms
Monday Night
Low: 50 °F
Showers
Likely
Tuesday
High: 58 °F
Showers
Tuesday Night
Low: 45 °F
Showers
Wednesday
High: 61 °F
Chance
Showers
Wednesday Night
Low: 43 °F
Partly Cloudy
Thursday
High: 74 °F
Sunny
Thursday Night
Low: 48 °F
Slight Chance
T-storms then
Partly Cloudy

Detailed Forecast

Tonight

Mostly clear, with a low around 58. North northwest wind around 6 mph becoming light and variable after midnight.

Monday

A 20 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 90. Light and variable wind becoming northwest 6 to 11 mph in the morning. Winds could gust as high as 21 mph.

Monday Night

Showers likely and possibly a thunderstorm. Cloudy, with a low around 50. Northwest wind 9 to 11 mph becoming north northeast in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday

Showers, with thunderstorms also possible after noon. High near 58. Northeast wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.

Tuesday Night

Showers and possibly a thunderstorm before 3am, then showers likely. Low around 45. East northeast wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

Wednesday

A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 61. East wind 6 to 8 mph. Chance of precipitation is 50%.

Wednesday Night

Partly cloudy, with a low around 43. East wind 6 to 8 mph.

Thursday

Sunny, with a high near 74. Light and variable wind becoming north 5 to 7 mph in the afternoon.

Thursday Night

A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 48.

Friday

Mostly sunny, with a high near 78.

Friday Night

Mostly clear, with a low around 52.

Saturday

Sunny, with a high near 83.