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

HORSE THIEF (HORM8)

Lat: 46.42581°NLon: 108.6745°WElev: 3414.0ft.

60°F

16°C

Humidity	74%
Wind Speed	WNW 4 MPH
Barometer	NA
Dewpoint	52°F (11°C)
Visibility	NA
Last update	17 Aug 04:39 AM MDT

More Information:

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

Extended Forecast for

Sumatra MT

Today
High: 88 °F
Sunny
Tonight
Low: 60 °F
Chance
Showers then
Mostly Cloudy
Monday
High: 90 °F
Hot
Monday Night
Low: 63 °F
Mostly Clear
Tuesday
High: 97 °F
Hot
Tuesday Night
Low: 65 °F
Mostly Clear
Wednesday
High: 96 °F
Hot
Wednesday Night
Low: 64 °F
Partly Cloudy
Thursday
High: 84 °F
Sunny

Detailed Forecast

Today

Sunny, with a high near 88. Northwest wind 6 to 8 mph becoming east northeast in the afternoon.

Tonight

A 40 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 60. West wind around 6 mph becoming north in the evening.

Monday

Sunny and hot, with a high near 90. Light and variable wind becoming south around 6 mph in the morning.

Monday Night

Mostly clear, with a low around 63. East wind around 6 mph.

Tuesday

Sunny and hot, with a high near 97. South southeast wind 3 to 7 mph.

Tuesday Night

Mostly clear, with a low around 65. East southeast wind 6 to 8 mph.

Wednesday

Sunny and hot, with a high near 96. Southeast wind 6 to 10 mph becoming northwest in the afternoon.

Wednesday Night

Partly cloudy, with a low around 64. North wind 8 to 10 mph.