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 >

Hazardous Weather Conditions

Special Weather Statement

Current conditions at

Big Timber Airport (K6S0)

Lat: 45.80647°NLon: 109.97826°WElev: 4494.0ft.

Partly Cloudy

75°F

24°C

Humidity	36%
Wind Speed	S 17 MPH
Barometer	30.01 in (1016.26 mb)
Dewpoint	46°F (8°C)
Visibility	10.00 mi
Last update	17 Aug 04:15 PM MDT

More Information:

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

Extended Forecast for

9 Miles W Harlowton MT

This Afternoon
High: 83 °F
Showers
Likely
Tonight
Low: 50 °F
Chance
T-storms then
Partly Cloudy
Monday
High: 87 °F
Sunny then
Slight Chance
T-storms
Monday Night
Low: 54 °F
Slight Chance
T-storms then
Mostly Clear
Tuesday
High: 95 °F
Hot
Tuesday Night
Low: 55 °F
Mostly Clear
Wednesday
High: 93 °F
Hot
Wednesday Night
Low: 54 °F
Partly Cloudy
then Slight
Chance
Showers
Thursday
High: 82 °F
Sunny

Detailed Forecast

This Afternoon

Showers likely and possibly a thunderstorm before 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 83. South southeast wind around 9 mph. Chance of precipitation is 60%.

Tonight

A 50 percent chance of showers and thunderstorms before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 50. West wind around 9 mph becoming north in the evening.

Monday

A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 87. West wind 5 to 10 mph becoming south southeast in the morning.

Monday Night

A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 54. Southwest wind 5 to 10 mph becoming north in the evening.

Tuesday

Sunny and hot, with a high near 95. West wind 6 to 8 mph becoming south southwest in the afternoon.

Tuesday Night

Mostly clear, with a low around 55. South southeast wind 6 to 9 mph becoming west northwest after midnight.

Wednesday

Sunny and hot, with a high near 93. West wind 10 to 15 mph.

Wednesday Night

A 20 percent chance of showers after midnight. Partly cloudy, with a low around 54. Northwest wind 10 to 14 mph.

Thursday

Sunny, with a high near 82. West northwest wind 8 to 10 mph.

Thursday Night

Mostly clear, with a low around 51. North northeast wind 6 to 13 mph.