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As of 08:20 MDT

Weather in Garrison, MT

43°Current weather

Garrison, Friday, 9 October, 08:20

Overcast. Feels like 41°. High 75°, low 42°.

Pressure29.74 inHg
Wind3.2 mph E
Humidity67%
Visibility6.2 mi
Dew point32°
Sat, 1047° / 29°0.3Snow
47 °Snow

Garrison, Saturday, 10 October

Snow. High 47°, low 29°.

Pressure29.74 inHg
Wind5.9 mph NW
Humidity95%
Visibility2.7 mi
Dew point40°
Sun, 1133° / 26°0.43Snow
33 °Snow

Garrison, Sunday, 11 October

Snow. High 33°, low 26°.

Pressure30.03 inHg
Wind7.9 mph E
Humidity95%
Visibility0.4 mi
Dew point26°
Mon, 1236° / 27°0.09Light snow
36 °Light snow

Garrison, Monday, 12 October

Light snow. High 36°, low 27°.

Pressure30.15 inHg
Wind5.3 mph E
Humidity93%
Visibility6.2 mi
Dew point24°
Tue, 1342° / 23°0Clear
42 °Clear

Garrison, Tuesday, 13 October

Clear. High 42°, low 23°.

Pressure30.18 inHg
Wind2.1 mph W
Humidity79%
Visibility—
Dew point29°
Wed, 1447° / 28°0Overcast
47 °Overcast

Garrison, Wednesday, 14 October

Overcast. High 47°, low 28°.

Pressure30.18 inHg
Wind9.7 mph NW
Humidity67%
Visibility—
Dew point29°
Thu, 1555° / 34°0Clear
55 °Clear

Garrison, Thursday, 15 October

Clear. High 55°, low 34°.

Pressure30.30 inHg
Wind9.9 mph NW
Humidity58%
Visibility—
Dew point32°
Fri, 1656° / 28°0Overcast
56 °Overcast

Garrison, Friday, 16 October

Overcast. High 56°, low 28°.

Pressure30.50 inHg
Wind9.5 mph E
Humidity49%
Visibility—
Dew point26°
Sat, 1765° / 41°0Overcast
65 °Overcast

Garrison, Saturday, 17 October

Overcast. High 65°, low 41°.

Pressure30.15 inHg
Wind6.4 mph NW
Humidity31%
Visibility—
Dew point26°
Sun, 1865° / 46°0Overcast
65 °Overcast

Garrison, Sunday, 18 October

Overcast. High 65°, low 46°.

Pressure29.97 inHg
Wind3.3 mph NW
Humidity32%
Visibility—
Dew point27°
Mon, 1963° / 45°0Overcast
63 °Overcast

Garrison, Monday, 19 October

Overcast. High 63°, low 45°.

Pressure29.85 inHg
Wind8.7 mph NW
Humidity26%
Visibility—
Dew point22°
Tue, 2056° / 39°0Clear
56 °Clear

Garrison, Tuesday, 20 October

Clear. High 56°, low 39°.

Pressure30.15 inHg
Wind10 mph NW
Humidity47%
Visibility—
Dew point30°
Wed, 2163° / 38°0Overcast
63 °Overcast

Garrison, Wednesday, 21 October

Overcast. High 63°, low 38°.

Pressure30.00 inHg
Wind20.6 mph W
Humidity29%
Visibility—
Dew point25°
Thu, 2253° / 35°0Overcast
53 °Overcast

Garrison, Thursday, 22 October

Overcast. High 53°, low 35°.

Pressure30.39 inHg
Wind4.4 mph E
Humidity46%
Visibility—
Dew point26°
Fri, 2364° / 37°0Clear
64 °Clear

Garrison, Friday, 23 October

Clear. High 64°, low 37°.

Pressure30.12 inHg
Wind3.7 mph NW
Humidity24%
Visibility—
Dew point18°
Sat, 2467° / 43°0Mostly clear
67 °Mostly clear

Garrison, Saturday, 24 October

Mostly clear. High 67°, low 43°.

Pressure30.03 inHg
Wind4.1 mph S
Humidity21%
Visibility—
Dew point18°

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.