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As of 21:43 MDT

Weather in Garrison, MT

55°Current weather

Garrison, Friday, 9 October, 21:43

Partly cloudy. Feels like 52°. High 75°, low 42°.

Pressure29.59 inHg
Wind10.6 mph NW
Humidity40%
Visibility6.2 mi
Dew point31°
Sat, 1052° / 30°0.37Snow
52 °Snow

Garrison, Saturday, 10 October

Snow. High 52°, low 30°.

Pressure29.71 inHg
Wind5.8 mph NW
Humidity94%
Visibility3.3 mi
Dew point40°
Sun, 1135° / 24°0.54Snow
35 °Snow

Garrison, Sunday, 11 October

Snow. High 35°, low 24°.

Pressure30.00 inHg
Wind7.1 mph E
Humidity95%
Visibility6.2 mi
Dew point26°
Mon, 1236° / 24°0.13Snow
36 °Snow

Garrison, Monday, 12 October

Snow. High 36°, low 24°.

Pressure30.12 inHg
Wind5.6 mph E
Humidity93%
Visibility6.2 mi
Dew point25°
Tue, 1342° / 23°0Clear
42 °Clear

Garrison, Tuesday, 13 October

Clear. High 42°, low 23°.

Pressure30.15 inHg
Wind1.8 mph SW
Humidity78%
Visibility6.2 mi
Dew point27°
Wed, 1446° / 25°0Clear
46 °Clear

Garrison, Wednesday, 14 October

Clear. High 46°, low 25°.

Pressure30.27 inHg
Wind2 mph E
Humidity66%
Visibility—
Dew point28°
Thu, 1545° / 32°0.05Light rain
45 °Light rain

Garrison, Thursday, 15 October

Light rain. High 45°, low 32°.

Pressure30.39 inHg
Wind6.4 mph NE
Humidity64%
Visibility—
Dew point31°
Fri, 1650° / 29°0Partly cloudy
50 °Partly cloudy

Garrison, Friday, 16 October

Partly cloudy. High 50°, low 29°.

Pressure30.59 inHg
Wind6.3 mph S
Humidity61%
Visibility—
Dew point28°
Sat, 1761° / 36°0Overcast
61 °Overcast

Garrison, Saturday, 17 October

Overcast. High 61°, low 36°.

Pressure30.06 inHg
Wind4.9 mph S
Humidity39%
Visibility—
Dew point28°
Sun, 1857° / 40°0Overcast
57 °Overcast

Garrison, Sunday, 18 October

Overcast. High 57°, low 40°.

Pressure29.97 inHg
Wind3.1 mph NW
Humidity47%
Visibility—
Dew point31°
Mon, 1951° / 38°0.02Light rain
51 °Light rain

Garrison, Monday, 19 October

Light rain. High 51°, low 38°.

Pressure29.88 inHg
Wind12.6 mph W
Humidity62%
Visibility—
Dew point35°
Tue, 2047° / 36°0.01Light rain
47 °Light rain

Garrison, Tuesday, 20 October

Light rain. High 47°, low 36°.

Pressure29.77 inHg
Wind21.3 mph W
Humidity55%
Visibility—
Dew point30°
Wed, 2152° / 31°0Overcast
52 °Overcast

Garrison, Wednesday, 21 October

Overcast. High 52°, low 31°.

Pressure30.12 inHg
Wind5.2 mph SW
Humidity46%
Visibility—
Dew point23°
Thu, 2244° / 33°0.08Light snow
44 °Light snow

Garrison, Thursday, 22 October

Light snow. High 44°, low 33°.

Pressure29.97 inHg
Wind19.6 mph NW
Humidity61%
Visibility—
Dew point29°
Fri, 2346° / 29°0Overcast
46 °Overcast

Garrison, Friday, 23 October

Overcast. High 46°, low 29°.

Pressure30.36 inHg
Wind15 mph NW
Humidity49%
Visibility—
Dew point23°
Sat, 2452° / 30°0Overcast
52 °Overcast

Garrison, Saturday, 24 October

Overcast. High 52°, low 30°.

Pressure30.33 inHg
Wind12 mph NW
Humidity39%
Visibility—
Dew point19°

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.