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

57°F

14°C

Humidity	67%
Wind Speed	SSE 3 MPH
Barometer	30.03 in (1016.93 mb)
Dewpoint	46°F (8°C)
Visibility	10.00 mi
Last update	14 Jul 04:20 AM MDT

More Information:

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

Extended Forecast for

Lewistown MTSimilar City Names

Today
High: 90 °F
Sunny
Tonight
Low: 50 °F
Showers
Likely
Tuesday
High: 58 °F
Showers
Tuesday Night
Low: 46 °F
Showers
Wednesday
High: 62 °F
Showers
Likely
Wednesday Night
Low: 43 °F
Partly Cloudy
Thursday
High: 77 °F
Sunny
Thursday Night
Low: 49 °F
Slight Chance
T-storms then
Partly Cloudy
Friday
High: 77 °F
Mostly Sunny
then Slight
Chance
T-storms

Detailed Forecast

Today

Sunny, with a high near 90. South southwest wind 5 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph.

Tonight

A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 3am, then showers likely after 3am. Mostly cloudy, with a low around 50. North wind 9 to 11 mph becoming east northeast in the evening. Winds could gust as high as 22 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 and possibly a thunderstorm. High near 58. East northeast wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday Night

Showers and possibly a thunderstorm before midnight, then showers likely. Low around 46. East northeast wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

Wednesday

Showers likely, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 62. East northeast wind 6 to 8 mph. Chance of precipitation is 60%.

Wednesday Night

Partly cloudy, with a low around 43. East southeast wind 6 to 9 mph.

Thursday

Sunny, with a high near 77. South southeast wind 5 to 7 mph becoming northeast in the afternoon.

Thursday Night

A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 49. East northeast wind 5 to 7 mph becoming south after midnight.

Friday

A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77.

Friday Night

Mostly clear, with a low around 51.

Saturday

A slight chance of showers and thunderstorms. Sunny, with a high near 83.

Saturday Night

Partly cloudy, with a low around 54.

Sunday

Sunny, with a high near 83.