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SCN26-50: Discontinuation of the State Forecast Product (SFP) for all NWS Central Region, Southern Region, and Western Region Offices: Effective June 29, 2026
The Regional Temperatures and Precipitation Product for the State of Montana (RTPMT) will now be discontinued on July 7, 2026.

Current conditions at

GIBSON DAM WEATHER STATION NEAR AUGUSTA 19WNW (GDMM8)

Lat: 47.60111°NLon: 112.75472°WElev: 4604.0ft.

55°F

13°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

19 Miles WNW Augusta MT

Overnight
Low: 48 °F
Slight Chance
Showers
Saturday
High: 64 °F
Chance
Showers then
Showers
Likely
Saturday Night
Low: 43 °F
Rain
Sunday
High: 55 °F
Rain Likely
Sunday Night
Low: 42 °F
Rain
Monday
High: 56 °F
Rain
Monday Night
Low: 43 °F
Showers
Likely then
Slight Chance
Showers
Tuesday
High: 66 °F
Partly Sunny
then Chance
T-storms
Tuesday Night
Low: 44 °F
Partly Cloudy

Detailed Forecast

Overnight

A 20 percent chance of showers after 5am. Mostly cloudy, with a low around 48. West wind around 6 mph.

Saturday

A chance of showers before 3pm, then showers likely and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 64. West wind around 8 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Rain and thunderstorms before 5am, then rain likely. Low around 43. West wind 7 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Sunday

Rain likely, mainly after 4pm. Cloudy, with a high near 55. West wind 8 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 70%.

Sunday Night

Rain. Low around 42. West wind 9 to 15 mph, with gusts as high as 32 mph. Chance of precipitation is 90%.

Monday

Rain. High near 56. West wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.

Monday Night

Showers likely, mainly before midnight. Mostly cloudy, with a low around 43. West wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

Tuesday

A chance of showers and thunderstorms after noon. Partly sunny, with a high near 66. West wind 6 to 8 mph, with gusts as high as 18 mph.

Tuesday Night

Partly cloudy, with a low around 44.

Wednesday

A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69.

Wednesday Night

Mostly cloudy, with a low around 44.

Thursday

A chance of showers. Partly sunny, with a high near 73.

Thursday Night

A chance of showers. Mostly cloudy, with a low around 47.