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As of 13:15 MDT

Weather in Garrison, MT

87°Current weather

Garrison, Saturday, 8 August, 13:15

Clear. Feels like 84°. High 88°, low 52°.

Pressure29.91 inHg
Wind8.9 mph NW
Humidity20%
Visibility6.2 mi
Dew point39°
Sun, 0986° / 52°0Overcast
86 °Overcast

Garrison, Sunday, 9 August

Overcast. High 86°, low 52°.

Pressure29.88 inHg
Wind7 mph NW
Humidity14%
Visibility6.2 mi
Dew point27°
Mon, 1090° / 50°0Clear
90 °Clear

Garrison, Monday, 10 August

Clear. High 90°, low 50°.

Pressure29.85 inHg
Wind8.3 mph NW
Humidity16%
Visibility6.2 mi
Dew point30°
Tue, 1189° / 54°0Clear
89 °Clear

Garrison, Tuesday, 11 August

Clear. High 89°, low 54°.

Pressure29.94 inHg
Wind5.3 mph NW
Humidity15%
Visibility6.2 mi
Dew point27°
Wed, 1291° / 57°0Clear
91 °Clear

Garrison, Wednesday, 12 August

Clear. High 91°, low 57°.

Pressure29.83 inHg
Wind4 mph N
Humidity14%
Visibility6.2 mi
Dew point26°
Thu, 1390° / 55°0.01Light rain
90 °Light rain

Garrison, Thursday, 13 August

Light rain. High 90°, low 55°.

Pressure29.77 inHg
Wind14.1 mph E
Humidity19%
Visibility—
Dew point35°
Fri, 1490° / 60°0Mostly clear
90 °Mostly clear

Garrison, Friday, 14 August

Mostly clear. High 90°, low 60°.

Pressure29.85 inHg
Wind16.6 mph NW
Humidity22%
Visibility—
Dew point37°
Sat, 1581° / 61°0.06Light rain
81 °Light rain

Garrison, Saturday, 15 August

Light rain. High 81°, low 61°.

Pressure30.03 inHg
Wind10.3 mph SE
Humidity57%
Visibility—
Dew point52°
Sun, 1689° / 57°0.06Light rain
89 °Light rain

Garrison, Sunday, 16 August

Light rain. High 89°, low 57°.

Pressure30.00 inHg
Wind10.3 mph W
Humidity26%
Visibility—
Dew point41°
Mon, 1791° / 57°0Partly cloudy
91 °Partly cloudy

Garrison, Monday, 17 August

Partly cloudy. High 91°, low 57°.

Pressure30.03 inHg
Wind13.1 mph NW
Humidity25%
Visibility—
Dew point40°
Tue, 1878° / 59°0.21Rain
78 °Rain

Garrison, Tuesday, 18 August

Rain. High 78°, low 59°.

Pressure29.94 inHg
Wind8.1 mph N
Humidity26%
Visibility—
Dew point39°
Wed, 1985° / 51°0Clear
85 °Clear

Garrison, Wednesday, 19 August

Clear. High 85°, low 51°.

Pressure30.06 inHg
Wind6.6 mph NE
Humidity37%
Visibility—
Dew point43°
Thu, 2091° / 60°0Overcast
91 °Overcast

Garrison, Thursday, 20 August

Overcast. High 91°, low 60°.

Pressure29.91 inHg
Wind12.1 mph NW
Humidity20%
Visibility—
Dew point35°
Fri, 2192° / 62°0Clear
92 °Clear

Garrison, Friday, 21 August

Clear. High 92°, low 62°.

Pressure29.94 inHg
Wind13 mph NW
Humidity23%
Visibility—
Dew point40°
Sat, 2293° / 63°0Partly cloudy
93 °Partly cloudy

Garrison, Saturday, 22 August

Partly cloudy. High 93°, low 63°.

Pressure29.94 inHg
Wind13.3 mph NW
Humidity23%
Visibility—
Dew point41°
Sun, 2394° / 62°0Overcast
94 °Overcast

Garrison, Sunday, 23 August

Overcast. High 94°, low 62°.

Pressure29.97 inHg
Wind16 mph E
Humidity27%
Visibility—
Dew point45°

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.