Severe Weather and Heavy Rainfall in the Ohio Valley; Heat Continuing in the South and Southeast

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians tonight. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Hazardous Weather Conditions

Air Quality Alert

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

Lat: 46.52361°NLon: 112.80843°WElev: 4327.0ft.

77°F

25°C

Humidity	16%
Wind Speed	WNW 3 MPH
Barometer	NA
Dewpoint	27°F (-3°C)
Visibility	NA
Heat Index	77°F (25°C)
Last update	11 Aug 08:30 PM MDT

More Information:

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

Extended Forecast for

10 Miles WSW Marysville MT

Tonight
Low: 50 °F
Patchy Smoke
Wednesday
High: 66 °F
Patchy Smoke
then Chance
Showers
Wednesday Night
Low: 48 °F
Chance
Showers
Thursday
High: 61 °F
Mostly Cloudy
then Showers
Thursday Night
Low: 47 °F
Showers
Friday
High: 60 °F
Chance Rain
then Showers
Friday Night
Low: 45 °F
Chance
T-storms then
Slight Chance
Rain
Saturday
High: 64 °F
Partly Sunny
then Chance
T-storms
Saturday Night
Low: 47 °F
Chance
Showers then
Partly Cloudy

Detailed Forecast

Tonight

Patchy smoke after 10pm. Mostly clear, with a low around 50. West northwest wind 5 to 10 mph becoming light north northwest after midnight. Winds could gust as high as 21 mph.

Wednesday

A 30 percent chance of showers and thunderstorms after 3pm. Patchy smoke. Sunny, with a high near 66. Light north wind becoming northeast 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

Wednesday Night

A chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and 3am. Patchy smoke before 7pm. Mostly cloudy, with a low around 48. North northeast wind 10 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

Thursday

Showers and possibly a thunderstorm after noon. High near 61. Northeast wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Low around 47. Northeast wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Friday

A chance of rain, then showers and possibly a thunderstorm after noon. High near 60. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night

A chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 45. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday

A chance of showers and thunderstorms after noon. Partly sunny, with a high near 64.

Saturday Night

A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 47.

Sunday

Sunny, with a high near 69.

Sunday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 50.

Monday

A chance of showers and thunderstorms. Mostly sunny, with a high near 70.

Monday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 50.