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

Helena Regional Airport (KHLN)

Lat: 46.60445°NLon: 111.9892°WElev: 3874.0ft.

Clear

90°F

32°C

Humidity	19%
Wind Speed	ENE 8 MPH
Barometer	29.88 in (1011.85 mb)
Dewpoint	43°F (6°C)
Visibility	10.00 mi
Heat Index	86°F (30°C)
Last update	15 Aug 03:35 PM MDT

More Information:

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

Extended Forecast for

8 Miles SSE Marysville MT

Tonight
Low: 59 °F
Haze then
Mostly Clear
Saturday
High: 85 °F
Sunny
Saturday Night
Low: 59 °F
Chance
Showers then
Partly Cloudy
Sunday
High: 81 °F
Mostly Sunny
then Chance
Showers
Sunday Night
Low: 57 °F
Slight Chance
T-storms then
Partly Cloudy
Monday
High: 83 °F
Sunny
Monday Night
Low: 59 °F
Mostly Clear
Tuesday
High: 90 °F
Sunny
Tuesday Night
Low: 61 °F
Partly Cloudy

Detailed Forecast

Tonight

Widespread haze between 7pm and 9pm. Mostly clear, with a low around 59. West wind 5 to 11 mph, with gusts as high as 22 mph.

Saturday

Sunny, with a high near 85. Light and variable wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 28 mph.

Saturday Night

A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 59. West northwest wind 8 to 13 mph becoming light west southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.

Sunday

A chance of showers and thunderstorms between noon and 3pm, then a chance of showers after 3pm. Partly sunny, with a high near 81. Light west wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 40%.

Sunday Night

A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 57. South southwest wind 3 to 8 mph.

Monday

Sunny, with a high near 83. Light west southwest wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

Monday Night

Mostly clear, with a low around 59. Southwest wind 3 to 7 mph.

Tuesday

Sunny, with a high near 90. Light and variable wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 21 mph.

Tuesday Night

Partly cloudy, with a low around 61.

Wednesday

Sunny, with a high near 88.