Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

Lat: 45.34534°NLon: 111.17261°WElev: 5699.0ft.

64°F

18°C

Humidity	53%
Wind Speed	ESE 5 MPH
Barometer	NA
Dewpoint	46°F (8°C)
Visibility	NA
Last update	13 Aug 06:31 PM MDT

More Information:

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

Extended Forecast for

4 Miles E Big Sky MT

Tonight
Low: 46 °F
Showers
Friday
High: 66 °F
Chance
Showers then
Showers
Friday Night
Low: 43 °F
Showers then
Slight Chance
Showers
Saturday
High: 73 °F
Chance
Showers then
Chance
T-storms
Saturday Night
Low: 43 °F
Showers
Likely then
Mostly Cloudy
Sunday
High: 78 °F
Mostly Sunny
then Slight
Chance
T-storms
Sunday Night
Low: 45 °F
Slight Chance
T-storms then
Mostly Cloudy
Monday
High: 78 °F
Partly Sunny
then Chance
T-storms
Monday Night
Low: 45 °F
Showers
Likely

Detailed Forecast

Tonight

Showers and thunderstorms before midnight, then showers likely. Patchy smoke after 3am. Low around 46. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Friday

A chance of showers before noon, then a chance of showers and thunderstorms between noon and 1pm, then showers and possibly a thunderstorm after 1pm. Patchy smoke before 9am. High near 66. Calm wind becoming west southwest 5 to 8 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night

Showers and thunderstorms before 3am, then a slight chance of showers after 4am. Patchy smoke before 9pm. Low around 43. West wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday

A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 73. Light and variable wind. Chance of precipitation is 50%.

Saturday Night

Showers likely and possibly a thunderstorm before 9pm, then showers likely between 9pm and midnight. Mostly cloudy, with a low around 43. Calm wind. Chance of precipitation is 60%.

Sunday

A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 78. Light and variable wind.

Sunday Night

A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 45. Light and variable wind.

Monday

A chance of showers and thunderstorms after noon. Partly sunny, with a high near 78. Calm wind becoming west 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 45.

Tuesday

A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 75.

Tuesday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 43.