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The Regional Temperatures and Precipitation Product for the State of Montana (RTPMT) will now be discontinued on July 7, 2026.

Current conditions at

ROCKY BOY (ROCM8)

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

50°F

10°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

9 Miles NNW Iliad MT

Overnight
Low: 55 °F
Mostly Cloudy
Monday
High: 79 °F
Partly Sunny
Monday Night
Low: 59 °F
Chance
Showers then
Showers
Likely
Tuesday
High: 78 °F
Chance
Showers then
Chance
T-storms
Tuesday Night
Low: 57 °F
Mostly Clear
Wednesday
High: 89 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 58 °F
Chance
Showers then
Slight Chance
Showers
Thursday
High: 82 °F
Sunny
Thursday Night
Low: 58 °F
Mostly Clear

Detailed Forecast

Overnight

Mostly cloudy, with a low around 55. West northwest wind 11 to 15 mph, with gusts as high as 25 mph.

Monday

Partly sunny, with a high near 79. Light and variable wind becoming east southeast 5 to 10 mph in the afternoon.

Monday Night

A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 59. East wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday

A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 78. East wind 6 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%.

Tuesday Night

Mostly clear, with a low around 57. Northeast wind 6 to 8 mph.

Wednesday

A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 89. East southeast wind 5 to 9 mph becoming south in the afternoon. Chance of precipitation is 20%.

Wednesday Night

A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 58. South southwest wind around 6 mph becoming light and variable. Chance of precipitation is 50%.

Thursday

Sunny, with a high near 82. West wind 5 to 9 mph.

Thursday Night

Mostly clear, with a low around 58.

Friday

Sunny, with a high near 88.

Friday Night

Mostly clear, with a low around 62.

Saturday

Sunny, with a high near 92.

Saturday Night

Mostly clear, with a low around 63.