Heat in the Central U.S.; Heavy Rain Possible for South Texas; Monitoring Erin Tropical Impacts

Hot temperatures are forecast over the Plains and into the lower Mississippi River Valley Friday where Heat Advisories have been issued. Heavy rain from a disturbance in the western Gulf could bring flooding to south Texas. Erin could bring tropical storm conditions and heavy rain to Puerto Rico and the USVI this weekend with dangerous surf and rip currents impacting the western Atlantic Basin. Read More >

Current conditions at

HELENA (HRWM8)

Lat: 46.73167°NLon: 112.01917°WElev: 3800.0ft.

80°F

27°C

Humidity	31%
Wind Speed	NNE 14 MPH
Barometer	NA
Dewpoint	47°F (8°C)
Visibility	NA
Heat Index	79°F (26°C)
Last update	14 Aug 07:53 PM MDT

More Information:

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

Extended Forecast for

8 Miles ESE Marysville MT

Tonight
Low: 52 °F
Mostly Clear
Friday
High: 87 °F
Sunny
Friday Night
Low: 54 °F
Mostly Clear
Saturday
High: 89 °F
Mostly Sunny
Saturday Night
Low: 55 °F
Slight Chance
T-storms then
Partly Cloudy
Sunday
High: 85 °F
Mostly Sunny
then Chance
T-storms
Sunday Night
Low: 53 °F
Chance
T-storms then
Partly Cloudy
Monday
High: 87 °F
Mostly Sunny
Monday Night
Low: 56 °F
Mostly Clear

Detailed Forecast

Tonight

Mostly clear, with a low around 52. North northwest wind 5 to 10 mph becoming light west northwest after midnight. Winds could gust as high as 20 mph.

Friday

Sunny, with a high near 87. Light and variable wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.

Friday Night

Mostly clear, with a low around 54. West northwest wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 21 mph.

Saturday

Mostly sunny, with a high near 89. Light and variable wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.

Saturday Night

A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 55. West northwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 18 mph.

Sunday

A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 85. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

Sunday Night

A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 53. West southwest wind 5 to 10 mph becoming light southwest after midnight. Winds could gust as high as 18 mph.

Monday

Mostly sunny, with a high near 87. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

Monday Night

Mostly clear, with a low around 56.

Tuesday

Sunny, with a high near 92.

Tuesday Night

Mostly clear, with a low around 57.

Wednesday

Sunny, with a high near 90.

Wednesday Night

Mostly clear, with a low around 55.