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 >

Current conditions at

Comertown Turn-Off MT-5 MP 13.4 (MTCOM)

Lat: 48.81°NLon: 104.2529°WElev: 2359.0ft.

68°F

20°C

Humidity	52%
Wind Speed	ESE 11 MPH
Barometer	NA
Dewpoint	50°F (10°C)
Visibility	NA
Last update	15 Aug 07:00 PM MDT

More Information:

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

Extended Forecast for

5 Miles SW Westby MT

Tonight
Low: 55 °F
Slight Chance
T-storms then
Partly Cloudy
Saturday
High: 80 °F
Mostly Sunny
Saturday Night
Low: 60 °F
Chance
T-storms
Sunday
High: 81 °F
Mostly Cloudy
then Slight
Chance
T-storms
Sunday Night
Low: 60 °F
Chance
T-storms
Monday
High: 83 °F
Partly Sunny
Monday Night
Low: 60 °F
Slight Chance
T-storms then
Partly Cloudy
Tuesday
High: 88 °F
Sunny
Tuesday Night
Low: 64 °F
Mostly Clear

Detailed Forecast

Tonight

A slight chance of showers and thunderstorms between 11pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 55. East wind 8 to 11 mph. Chance of precipitation is 20%.

Saturday

Mostly sunny, with a high near 80. Southeast wind 8 to 17 mph, with gusts as high as 28 mph.

Saturday Night

A 30 percent chance of showers and thunderstorms, mainly between 10pm and midnight. Mostly cloudy, with a low around 60. Southeast wind 14 to 17 mph, with gusts as high as 28 mph.

Sunday

A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 81. South southeast wind 10 to 13 mph, with gusts as high as 20 mph.

Sunday Night

A 40 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 60. Southeast wind 6 to 10 mph.

Monday

Partly sunny, with a high near 83. South southeast wind 6 to 9 mph.

Monday Night

A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 60. East wind 6 to 9 mph becoming south southeast after midnight.

Tuesday

Sunny, with a high near 88. Southeast wind 6 to 10 mph.

Tuesday Night

Mostly clear, with a low around 64. Southeast wind around 10 mph.

Wednesday

Sunny, with a high near 89. South southeast wind 9 to 14 mph, with gusts as high as 21 mph.

Wednesday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61. Southeast wind 10 to 14 mph becoming north after midnight. Winds could gust as high as 20 mph.

Thursday

Mostly sunny, with a high near 79.

Thursday Night

A slight chance of showers. Mostly clear, with a low around 55.

Friday

Mostly sunny, with a high near 73.