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As of 05:00 MDT

Weather in Garrison, MT

51°Current weather

Garrison, Friday, 9 October, 05:00

Overcast. Feels like 48°. High 75°, low 45°.

Pressure29.80 inHg
Wind2.1 mph E
Humidity57%
Visibility6.2 mi
Dew point35°
Sat, 1047° / 33°0.43Snow
47 °Snow

Garrison, Saturday, 10 October

Snow. High 47°, low 33°.

Pressure29.77 inHg
Wind5 mph NW
Humidity96%
Visibility2.1 mi
Dew point39°
Sun, 1133° / 29°0.3Snow
33 °Snow

Garrison, Sunday, 11 October

Snow. High 33°, low 29°.

Pressure30.00 inHg
Wind7.8 mph E
Humidity94%
Visibility6.2 mi
Dew point25°
Mon, 1235° / 28°0.13Snow
35 °Snow

Garrison, Monday, 12 October

Snow. High 35°, low 28°.

Pressure30.12 inHg
Wind4.2 mph E
Humidity94%
Visibility6.2 mi
Dew point25°
Tue, 1343° / 24°0Clear
43 °Clear

Garrison, Tuesday, 13 October

Clear. High 43°, low 24°.

Pressure30.12 inHg
Wind4.7 mph W
Humidity79%
Visibility—
Dew point29°
Wed, 1446° / 30°0Overcast
46 °Overcast

Garrison, Wednesday, 14 October

Overcast. High 46°, low 30°.

Pressure30.06 inHg
Wind16.4 mph W
Humidity66%
Visibility—
Dew point31°
Thu, 1539° / 31°0.08Snow
39 °Snow

Garrison, Thursday, 15 October

Snow. High 39°, low 31°.

Pressure30.53 inHg
Wind11.9 mph NE
Humidity70%
Visibility—
Dew point27°
Fri, 1655° / 28°0Mostly clear
55 °Mostly clear

Garrison, Friday, 16 October

Mostly clear. High 55°, low 28°.

Pressure30.42 inHg
Wind4.2 mph NW
Humidity43%
Visibility—
Dew point24°
Sat, 1764° / 40°0Overcast
64 °Overcast

Garrison, Saturday, 17 October

Overcast. High 64°, low 40°.

Pressure30.18 inHg
Wind5 mph NW
Humidity29%
Visibility—
Dew point23°
Sun, 1860° / 44°0Overcast
60 °Overcast

Garrison, Sunday, 18 October

Overcast. High 60°, low 44°.

Pressure30.03 inHg
Wind4.8 mph NW
Humidity32%
Visibility—
Dew point25°
Mon, 1959° / 45°0Overcast
59 °Overcast

Garrison, Monday, 19 October

Overcast. High 59°, low 45°.

Pressure29.94 inHg
Wind4 mph N
Humidity40%
Visibility—
Dew point29°
Tue, 2052° / 38°0.26Snow
52 °Snow

Garrison, Tuesday, 20 October

Snow. High 52°, low 38°.

Pressure29.88 inHg
Wind7.3 mph N
Humidity58%
Visibility—
Dew point36°
Wed, 2142° / 37°0.24Snow
42 °Snow

Garrison, Wednesday, 21 October

Snow. High 42°, low 37°.

Pressure30.30 inHg
Wind5.3 mph N
Humidity84%
Visibility—
Dew point34°
Thu, 2250° / 35°0Mostly clear
50 °Mostly clear

Garrison, Thursday, 22 October

Mostly clear. High 50°, low 35°.

Pressure30.15 inHg
Wind4.4 mph SE
Humidity72%
Visibility—
Dew point35°
Fri, 2351° / 33°0Overcast
51 °Overcast

Garrison, Friday, 23 October

Overcast. High 51°, low 33°.

Pressure29.97 inHg
Wind4.2 mph SE
Humidity70%
Visibility—
Dew point35°
Sat, 2453° / 36°0Partly cloudy
53 °Partly cloudy

Garrison, Saturday, 24 October

Partly cloudy. High 53°, low 36°.

Pressure29.97 inHg
Wind4.4 mph NW
Humidity67%
Visibility—
Dew point36°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Garrison, MT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Garrison, MT since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.