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As of 04:15 MDT

Weather in Garrison, MT

29°Current weather

Garrison, Monday, 12 October, 04:15

Overcast. Feels like 24°. High 38°, low 29°.

Pressure30.03 inHg
Wind5.1 mph E
Humidity91%
Visibility6.2 mi
Dew point27°
Tue, 1345° / 27°0Clear
45 °Clear

Garrison, Tuesday, 13 October

Clear. High 45°, low 27°.

Pressure30.18 inHg
Wind2.1 mph W
Humidity75%
Visibility6.2 mi
Dew point27°
Wed, 1450° / 28°0Mostly clear
50 °Mostly clear

Garrison, Wednesday, 14 October

Mostly clear. High 50°, low 28°.

Pressure30.21 inHg
Wind3.7 mph W
Humidity61%
Visibility6.2 mi
Dew point23°
Thu, 1553° / 33°0Clear
53 °Clear

Garrison, Thursday, 15 October

Clear. High 53°, low 33°.

Pressure30.59 inHg
Wind8.3 mph E
Humidity56%
Visibility6.2 mi
Dew point32°
Fri, 1663° / 34°0Clear
63 °Clear

Garrison, Friday, 16 October

Clear. High 63°, low 34°.

Pressure30.36 inHg
Wind5.5 mph E
Humidity40%
Visibility—
Dew point28°
Sat, 1764° / 36°0Overcast
64 °Overcast

Garrison, Saturday, 17 October

Overcast. High 64°, low 36°.

Pressure29.97 inHg
Wind3.7 mph NW
Humidity38%
Visibility—
Dew point29°
Sun, 1860° / 44°0Clear
60 °Clear

Garrison, Sunday, 18 October

Clear. High 60°, low 44°.

Pressure29.94 inHg
Wind9.8 mph NW
Humidity51%
Visibility—
Dew point36°
Mon, 1965° / 43°0Overcast
65 °Overcast

Garrison, Monday, 19 October

Overcast. High 65°, low 43°.

Pressure29.74 inHg
Wind11.2 mph S
Humidity34%
Visibility—
Dew point30°
Tue, 2052° / 38°0.13Snow
52 °Snow

Garrison, Tuesday, 20 October

Snow. High 52°, low 38°.

Pressure29.85 inHg
Wind10.7 mph W
Humidity84%
Visibility—
Dew point38°
Wed, 2149° / 30°0Clear
49 °Clear

Garrison, Wednesday, 21 October

Clear. High 49°, low 30°.

Pressure30.12 inHg
Wind4.8 mph W
Humidity59%
Visibility—
Dew point27°
Thu, 2254° / 31°0Mostly clear
54 °Mostly clear

Garrison, Thursday, 22 October

Mostly clear. High 54°, low 31°.

Pressure30.24 inHg
Wind3.8 mph SW
Humidity36%
Visibility—
Dew point19°
Fri, 2363° / 38°0Clear
63 °Clear

Garrison, Friday, 23 October

Clear. High 63°, low 38°.

Pressure30.06 inHg
Wind4.6 mph S
Humidity34%
Visibility—
Dew point25°
Sat, 2459° / 43°0Partly cloudy
59 °Partly cloudy

Garrison, Saturday, 24 October

Partly cloudy. High 59°, low 43°.

Pressure30.09 inHg
Wind10.8 mph NW
Humidity40%
Visibility—
Dew point29°
Sun, 2558° / 38°0Clear
58 °Clear

Garrison, Sunday, 25 October

Clear. High 58°, low 38°.

Pressure30.21 inHg
Wind4 mph NW
Humidity51%
Visibility—
Dew point32°
Mon, 2661° / 40°0Clear
61 °Clear

Garrison, Monday, 26 October

Clear. High 61°, low 40°.

Pressure30.09 inHg
Wind3 mph S
Humidity42%
Visibility—
Dew point30°
Tue, 2765° / 44°0Overcast
65 °Overcast

Garrison, Tuesday, 27 October

Overcast. High 65°, low 44°.

Pressure29.80 inHg
Wind14.3 mph W
Humidity32%
Visibility—
Dew point28°

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.