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 >

Current conditions at

ROCKY BOY (ROCM8)

Lat: 48.17478°NLon: 109.64728°WElev: 4700.0ft.

71°F

22°C

Humidity	NA
Wind Speed	NA NA MPH
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	NA

More Information:

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

Extended Forecast for

11 Miles SSW Lloyd MT

Tonight
Low: 56 °F
Chance
Showers then
Partly Cloudy
Monday
High: 79 °F
Sunny then
Slight Chance
Showers
Monday Night
Low: 60 °F
Mostly Clear
Tuesday
High: 87 °F
Sunny
Tuesday Night
Low: 61 °F
Partly Cloudy
Wednesday
High: 84 °F
Sunny
Wednesday Night
Low: 55 °F
Slight Chance
T-storms then
Slight Chance
Showers
Thursday
High: 72 °F
Mostly Sunny
Thursday Night
Low: 50 °F
Mostly Clear

Detailed Forecast

Tonight

A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and 10pm. Cloudy, then gradual clearing toward daybreak, with a low around 56. West northwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 40%.

Monday

A 20 percent chance of showers after 5pm. Sunny, with a high near 79. Calm wind becoming south southwest 5 to 8 mph in the morning.

Monday Night

Mostly clear, with a low around 60. Southwest wind 5 to 7 mph becoming light and variable in the evening.

Tuesday

Sunny, with a high near 87. South southeast wind 3 to 7 mph.

Tuesday Night

Partly cloudy, with a low around 61. South wind around 7 mph becoming northeast after midnight.

Wednesday

Sunny, with a high near 84. Northwest wind 6 to 10 mph.

Wednesday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 55. Northwest wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.

Thursday

Mostly sunny, with a high near 72. North northwest wind around 10 mph.

Thursday Night

Mostly clear, with a low around 50.

Friday

Sunny, with a high near 68.

Friday Night

Mostly clear, with a low around 48.

Saturday

Sunny, with a high near 70.

Saturday Night

Mostly clear, with a low around 50.