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

84°F

29°C

Humidity	23%
Wind Speed	E 8 MPH
Barometer	29.93 in (1013.55 mb)
Dewpoint	43°F (6°C)
Visibility	10.00 mi
Heat Index	81°F (27°C)
Last update	16 Aug 12:20 PM MDT

More Information:

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

Extended Forecast for

3 Miles WNW Helena MT

This Afternoon
High: 89 °F
Slight Chance
T-storms
Tonight
Low: 58 °F
Chance
T-storms then
Haze
Sunday
High: 84 °F
Haze then
Chance
T-storms
Sunday Night
Low: 56 °F
Slight Chance
T-storms then
Partly Cloudy
Monday
High: 87 °F
Mostly Sunny
Monday Night
Low: 59 °F
Mostly Clear
Tuesday
High: 93 °F
Sunny
Tuesday Night
Low: 60 °F
Partly Cloudy
Wednesday
High: 91 °F
Sunny

Detailed Forecast

This Afternoon

A 20 percent chance of showers and thunderstorms after 3pm. Widespread haze after 3pm. Areas of smoke before 3pm. Mostly sunny, with a high near 89. East northeast wind 6 to 10 mph becoming north northwest. Winds could gust as high as 20 mph.

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 8pm. Widespread haze between midnight and 3am. Areas of smoke before midnight, then areas of smoke after 3am. Mostly cloudy, with a low around 58. West northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

Sunday

A 40 percent chance of showers and thunderstorms after noon. Widespread haze. Partly sunny, with a high near 84. Calm wind becoming west northwest 5 to 8 mph in the afternoon.

Sunday Night

A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Widespread haze before 7pm. Mostly cloudy, with a low around 56. South wind 3 to 8 mph. Chance of precipitation is 20%.

Monday

Mostly sunny, with a high near 87. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

Monday Night

Mostly clear, with a low around 59. West northwest wind 5 to 7 mph becoming light and variable after midnight.

Tuesday

Sunny, with a high near 93. Calm wind becoming east 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

Tuesday Night

Partly cloudy, with a low around 60. East northeast wind 5 to 7 mph becoming west southwest after midnight.

Wednesday

Sunny, with a high near 91.

Wednesday Night

Partly cloudy, with a low around 58.