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

Lewistown Divide MT-200 MP 90.3 (MTLEW)

Lat: 47.07579°NLon: 109.26247°WElev: 4723.0ft.

72°F

22°C

Humidity	46%
Wind Speed	NNW 3 MPH
Barometer	NA
Dewpoint	50°F (10°C)
Visibility	NA
Last update	17 Aug 11:30 AM MDT

More Information:

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

Extended Forecast for

5 Miles NNE Forestgrove MT

Today
High: 81 °F
Chance
T-storms
Tonight
Low: 56 °F
Showers then
Haze
Monday
High: 84 °F
Haze then
Chance
Showers
Monday Night
Low: 61 °F
Mostly Clear
Tuesday
High: 91 °F
Sunny
Tuesday Night
Low: 62 °F
Mostly Clear
Wednesday
High: 90 °F
Sunny
Wednesday Night
Low: 59 °F
Partly Cloudy
Thursday
High: 78 °F
Sunny

Detailed Forecast

Today

A slight chance of showers, then a chance of showers and thunderstorms after 3pm. Sunny early, then becoming mostly cloudy, with a high near 81. West northwest wind around 6 mph becoming east in the afternoon. Chance of precipitation is 40%.

Tonight

Showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Widespread haze after 5am. Low around 56. Northeast wind around 7 mph becoming southwest in the evening. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday

A 40 percent chance of showers after noon. Widespread haze before 10am. Mostly sunny, with a high near 84. West southwest wind 5 to 7 mph becoming calm.

Monday Night

Mostly clear, with a low around 61. Southwest wind around 6 mph becoming east southeast in the evening.

Tuesday

Sunny, with a high near 91. South southwest wind around 6 mph becoming southeast in the afternoon.

Tuesday Night

Mostly clear, with a low around 62. East southeast wind around 7 mph becoming south southwest after midnight.

Wednesday

Sunny, with a high near 90. South southwest wind 7 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.

Wednesday Night

Partly cloudy, with a low around 59. North northwest wind 6 to 9 mph becoming west southwest after midnight.

Thursday

Sunny, with a high near 78.