Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northern Gulf Coast from the western Florida Panhandle to southeastern Louisiana through tonight. Read More >

Hazardous Weather Conditions

Flood Watch in effect from July 22, 12:00 PM MDT until July 23, 12:00 AM MDT

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

unknown precip

79°F

26°C

Humidity	46%
Wind Speed	SSE 2 MPH
Barometer	NA
Dewpoint	56°F (13°C)
Visibility	NA
Heat Index	80°F (27°C)
Last update	22 Jul 11:30 AM MDT

More Information:

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

Extended Forecast for

4 Miles E Big Sky MT

Flood Watch July 22, 12:00pm until July 23, 12:00am

Click here for hazard details and duration

Flood Watch

Today
High: 86 °F
T-storms
Tonight
Low: 54 °F
Showers
Likely then
Slight Chance
Showers
Thursday
High: 88 °F
Mostly Sunny
then Chance
T-storms
Thursday Night
Low: 55 °F
Mostly Clear
Friday
High: 93 °F
Sunny
Friday Night
Low: 56 °F
Slight Chance
T-storms then
Mostly Clear
Saturday
High: 94 °F
Sunny
Saturday Night
Low: 54 °F
Mostly Clear
Sunday
High: 91 °F
Sunny

Detailed Forecast

Today

Showers and possibly a thunderstorm, mainly before 5pm, then showers and thunderstorms likely after 5pm. High near 86. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 54. Calm wind. Chance of precipitation is 60%.

Thursday

A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 88. Light north wind.

Thursday Night

Mostly clear, with a low around 55. Light and variable wind.

Friday

Sunny, with a high near 93. West southwest wind 3 to 8 mph. Winds could gust as high as 21 mph.

Friday Night

A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 56. South wind 3 to 6 mph. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

Saturday

Sunny, with a high near 94. Light south wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 25 mph.

Saturday Night

Mostly clear, with a low around 54. Southwest wind 6 to 11 mph becoming light south after midnight. Winds could gust as high as 24 mph.

Sunday

Sunny, with a high near 91.

Sunday Night

Partly cloudy, with a low around 54.

Monday

A slight chance of showers and thunderstorms. Sunny, with a high near 91.

Monday Night

A slight chance of showers. Partly cloudy, with a low around 55.