Severe Weather and Heavy Rainfall in the Ohio Valley; Heat Continuing in the South and Southeast

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians tonight. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Hazardous Weather Conditions

Air Quality Alert

Current conditions at

HELENA (HRWM8)

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

66°F

19°C

Humidity	25%
Wind Speed	NNE 6 MPH
Barometer	NA
Dewpoint	29°F (-2°C)
Visibility	NA
Last update	11 Aug 11:53 PM MDT

More Information:

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

Extended Forecast for

6 Miles S Marysville MT

Overnight
Low: 52 °F
Patchy Smoke
Wednesday
High: 68 °F
Patchy Smoke
then Slight
Chance
T-storms
Wednesday Night
Low: 50 °F
Chance
Showers
Thursday
High: 61 °F
Slight Chance
Showers then
Showers
Likely
Thursday Night
Low: 48 °F
Showers
Friday
High: 60 °F
Showers
Friday Night
Low: 47 °F
Chance
Showers then
Mostly Cloudy
Saturday
High: 67 °F
Partly Sunny
then Chance
T-storms
Saturday Night
Low: 49 °F
Chance
T-storms then
Mostly Cloudy

Detailed Forecast

Overnight

Patchy smoke. Partly cloudy, with a low around 52. West northwest wind around 7 mph.

Wednesday

A 20 percent chance of showers and thunderstorms after 3pm. Patchy smoke. Mostly sunny, with a high near 68. Northwest wind 6 to 13 mph becoming northeast in the morning. Winds could gust as high as 21 mph.

Wednesday Night

A chance of showers and thunderstorms. Patchy smoke before 9pm. Increasing clouds, with a low around 50. North northeast wind 8 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.

Thursday

A slight chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 61. North northeast wind around 8 mph. Chance of precipitation is 70%.

Thursday Night

Showers and possibly a thunderstorm. Low around 48. North wind around 9 mph. Chance of precipitation is 90%.

Friday

Showers likely, then showers and possibly a thunderstorm after noon. High near 60. Northeast wind around 7 mph. Chance of precipitation is 80%.

Friday Night

A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 47. Northeast wind 3 to 5 mph. Chance of precipitation is 50%.

Saturday

A chance of showers and thunderstorms after noon. Partly sunny, with a high near 67. Light and variable wind becoming south southeast around 6 mph in the afternoon.

Saturday Night

A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 49.

Sunday

Mostly sunny, with a high near 71.

Sunday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 51.

Monday

A slight chance of showers and thunderstorms. Partly sunny, with a high near 72.

Monday Night

A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 52.

Tuesday

A chance of showers and thunderstorms. Mostly sunny, with a high near 70.