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As of 07:59 MDT

Weather in Garrison, MT

29°Current weather

Garrison, Monday, 12 October, 07:59

Overcast. Feels like 24°. High 39°, low 29°.

Pressure30.09 inHg
Wind4.2 mph E
Humidity94%
Visibility6.2 mi
Dew point27°
Tue, 1345° / 27°0Clear
45 °Clear

Garrison, Tuesday, 13 October

Clear. High 45°, low 27°.

Pressure30.18 inHg
Wind2.5 mph W
Humidity75%
Visibility3.6 mi
Dew point27°
Wed, 1450° / 29°0Partly cloudy
50 °Partly cloudy

Garrison, Wednesday, 14 October

Partly cloudy. High 50°, low 29°.

Pressure30.24 inHg
Wind4 mph W
Humidity61%
Visibility6.2 mi
Dew point24°
Thu, 1554° / 32°0Clear
54 °Clear

Garrison, Thursday, 15 October

Clear. High 54°, low 32°.

Pressure30.56 inHg
Wind6.9 mph E
Humidity53%
Visibility6.2 mi
Dew point32°
Fri, 1662° / 33°0Clear
62 °Clear

Garrison, Friday, 16 October

Clear. High 62°, low 33°.

Pressure30.42 inHg
Wind5.5 mph E
Humidity41%
Visibility—
Dew point29°
Sat, 1764° / 37°0Overcast
64 °Overcast

Garrison, Saturday, 17 October

Overcast. High 64°, low 37°.

Pressure30.00 inHg
Wind3.1 mph E
Humidity38%
Visibility—
Dew point29°
Sun, 1859° / 43°0Partly cloudy
59 °Partly cloudy

Garrison, Sunday, 18 October

Partly cloudy. High 59°, low 43°.

Pressure29.94 inHg
Wind11.1 mph W
Humidity40%
Visibility—
Dew point31°
Mon, 1967° / 41°0Overcast
67 °Overcast

Garrison, Monday, 19 October

Overcast. High 67°, low 41°.

Pressure29.80 inHg
Wind10.4 mph S
Humidity32%
Visibility—
Dew point26°
Tue, 2051° / 39°0.23Snow
51 °Snow

Garrison, Tuesday, 20 October

Snow. High 51°, low 39°.

Pressure29.59 inHg
Wind8.7 mph NW
Humidity66%
Visibility—
Dew point39°
Wed, 2144° / 36°0.01Light rain
44 °Light rain

Garrison, Wednesday, 21 October

Light rain. High 44°, low 36°.

Pressure30.00 inHg
Wind6.2 mph NE
Humidity73%
Visibility—
Dew point33°
Thu, 2248° / 35°0.01Light rain
48 °Light rain

Garrison, Thursday, 22 October

Light rain. High 48°, low 35°.

Pressure30.15 inHg
Wind3.3 mph N
Humidity69%
Visibility—
Dew point31°
Fri, 2354° / 37°0Overcast
54 °Overcast

Garrison, Friday, 23 October

Overcast. High 54°, low 37°.

Pressure29.94 inHg
Wind15.6 mph NW
Humidity59%
Visibility—
Dew point31°
Sat, 2453° / 34°0Clear
53 °Clear

Garrison, Saturday, 24 October

Clear. High 53°, low 34°.

Pressure30.39 inHg
Wind6.9 mph NW
Humidity56%
Visibility—
Dew point30°
Sun, 2556° / 35°0Mostly clear
56 °Mostly clear

Garrison, Sunday, 25 October

Mostly clear. High 56°, low 35°.

Pressure30.53 inHg
Wind4.5 mph NW
Humidity52%
Visibility—
Dew point30°
Mon, 2662° / 40°0Partly cloudy
62 °Partly cloudy

Garrison, Monday, 26 October

Partly cloudy. High 62°, low 40°.

Pressure30.42 inHg
Wind3.4 mph NW
Humidity37%
Visibility—
Dew point27°
Tue, 2766° / 44°0Overcast
66 °Overcast

Garrison, Tuesday, 27 October

Overcast. High 66°, low 44°.

Pressure30.24 inHg
Wind3.2 mph NW
Humidity40%
Visibility—
Dew point33°

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.