Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

Lat: 47.47333°NLon: 111.38222°WElev: 3675.0ft.

Rain

72°F

22°C

Humidity	46%
Wind Speed	SW 10 MPH
Barometer	30.03 in (1016.93 mb)
Dewpoint	50°F (10°C)
Visibility	10.00 mi
Last update	17 Aug 11:05 AM MDT

More Information:

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

Extended Forecast for

9 Miles S Ulm MT

Today
High: 85 °F
Chance
T-storms
Tonight
Low: 55 °F
Chance
T-storms then
Haze
Monday
High: 92 °F
Haze then
Chance
Showers
Monday Night
Low: 58 °F
Mostly Clear
Tuesday
High: 96 °F
Hot
Tuesday Night
Low: 59 °F
Partly Cloudy
Wednesday
High: 94 °F
Sunny
Wednesday Night
Low: 56 °F
Partly Cloudy
Thursday
High: 83 °F
Sunny

Detailed Forecast

Today

A 40 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 85. Light west southwest wind increasing to 5 to 9 mph in the afternoon.

Tonight

A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Widespread haze before 8pm, then widespread haze after 5am. Mostly cloudy, then gradually becoming mostly clear, with a low around 55. South wind 6 to 8 mph. Chance of precipitation is 40%.

Monday

A 30 percent chance of showers after noon. Widespread haze before 9am. Mostly sunny, with a high near 92. Light and variable wind becoming west southwest 5 to 8 mph in the afternoon.

Monday Night

Mostly clear, with a low around 58. West wind 5 to 8 mph becoming light and variable after midnight.

Tuesday

Sunny and hot, with a high near 96. Calm wind becoming southwest around 6 mph in the afternoon.

Tuesday Night

Partly cloudy, with a low around 59. West wind 5 to 7 mph becoming southeast after midnight.

Wednesday

Sunny, with a high near 94. South southwest wind 5 to 9 mph becoming west northwest in the afternoon.

Wednesday Night

Partly cloudy, with a low around 56. West wind 5 to 11 mph, with gusts as high as 20 mph.

Thursday

Sunny, with a high near 83.