Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Special Weather Statement

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

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

Rain

64°F

18°C

Humidity	77%
Wind Speed	SSW 16 MPH
Barometer	30.01 in (1016.26 mb)
Dewpoint	57°F (14°C)
Visibility	5.00 mi
Last update	16 Aug 08:35 PM MDT

More Information:

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

Extended Forecast for

6 Miles WSW Ulm MT

Tonight
Low: 57 °F
Chance
T-storms then
Mostly Cloudy
Sunday
High: 86 °F
Partly Sunny
then Chance
Showers
Sunday Night
Low: 55 °F
Slight Chance
T-storms then
Haze
Monday
High: 90 °F
Haze then
Slight Chance
T-storms
Monday Night
Low: 58 °F
Mostly Clear
Tuesday
High: 96 °F
Hot
Tuesday Night
Low: 58 °F
Partly Cloudy
Wednesday
High: 94 °F
Sunny
Wednesday Night
Low: 55 °F
Partly Cloudy

Detailed Forecast

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 57. West northwest wind 5 to 10 mph becoming light and variable after midnight.

Sunday

A 30 percent chance of showers, mainly after 5pm. Widespread haze between 3pm and 4pm. Mostly sunny, with a high near 86. Calm wind becoming west 5 to 9 mph in the afternoon.

Sunday Night

A 20 percent chance of showers and thunderstorms before midnight. Widespread haze before 10pm, then widespread haze after 3am. Mostly cloudy, with a low around 55. West northwest wind 5 to 9 mph becoming south southwest after midnight.

Monday

A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Widespread haze before 7am. Sunny, with a high near 90. Light south southwest wind becoming west southwest 5 to 9 mph in the afternoon. Chance of precipitation is 20%.

Monday Night

Mostly clear, with a low around 58. West wind 5 to 9 mph becoming light and variable after midnight.

Tuesday

Sunny and hot, with a high near 96. Calm wind becoming southeast 5 to 7 mph in the afternoon.

Tuesday Night

Partly cloudy, with a low around 58. West northwest wind 5 to 9 mph becoming east northeast in the evening.

Wednesday

Sunny, with a high near 94. Light southwest wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

Wednesday Night

Partly cloudy, with a low around 55.

Thursday

Sunny, with a high near 84.