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As of 16:32 CDT

Weather in Garrison, IL

88°Current weather

Garrison, Wednesday, 7 October, 16:32

Clear. Feels like 85°. High 88°, low 52°.

Pressure29.88 inHg
Wind10.4 mph SW
Humidity29%
Visibility6.2 mi
Dew point52°
Thu, 0883° / 52°0Clear
83 °Clear

Garrison, Thursday, 8 October

Clear. High 83°, low 52°.

Pressure30.12 inHg
Wind4.9 mph E
Humidity34%
Visibility6.2 mi
Dew point47°
Fri, 0984° / 50°0Clear
84 °Clear

Garrison, Friday, 9 October

Clear. High 84°, low 50°.

Pressure30.18 inHg
Wind9.4 mph SE
Humidity32%
Visibility6.2 mi
Dew point47°
Sat, 1082° / 60°0Overcast
82 °Overcast

Garrison, Saturday, 10 October

Overcast. High 82°, low 60°.

Pressure30.15 inHg
Wind7.1 mph SE
Humidity36%
Visibility6.2 mi
Dew point52°
Sun, 1173° / 61°0.65Rain
73 °Rain

Garrison, Sunday, 11 October

Rain. High 73°, low 61°.

Pressure29.85 inHg
Wind8.1 mph E
Humidity77%
Visibility6.2 mi
Dew point62°
Mon, 1282° / 58°0Clear
82 °Clear

Garrison, Monday, 12 October

Clear. High 82°, low 58°.

Pressure29.94 inHg
Wind10.3 mph SW
Humidity56%
Visibility—
Dew point59°
Tue, 1387° / 69°0Clear
87 °Clear

Garrison, Tuesday, 13 October

Clear. High 87°, low 69°.

Pressure29.88 inHg
Wind14.1 mph NE
Humidity43%
Visibility—
Dew point60°
Wed, 1486° / 59°0Clear
86 °Clear

Garrison, Wednesday, 14 October

Clear. High 86°, low 59°.

Pressure29.97 inHg
Wind12.3 mph SE
Humidity45%
Visibility—
Dew point55°
Thu, 1594° / 71°0.06Light rain
94 °Light rain

Garrison, Thursday, 15 October

Light rain. High 94°, low 71°.

Pressure29.88 inHg
Wind20.2 mph SW
Humidity35%
Visibility—
Dew point59°
Fri, 1677° / 60°0.07Light rain
77 °Light rain

Garrison, Friday, 16 October

Light rain. High 77°, low 60°.

Pressure30.21 inHg
Wind14.9 mph N
Humidity36%
Visibility—
Dew point45°
Sat, 1763° / 49°0Overcast
63 °Overcast

Garrison, Saturday, 17 October

Overcast. High 63°, low 49°.

Pressure30.30 inHg
Wind14.1 mph N
Humidity34%
Visibility—
Dew point31°
Sun, 1863° / 41°0Overcast
63 °Overcast

Garrison, Sunday, 18 October

Overcast. High 63°, low 41°.

Pressure30.36 inHg
Wind7.7 mph N
Humidity29%
Visibility—
Dew point26°
Mon, 1967° / 41°0Clear
67 °Clear

Garrison, Monday, 19 October

Clear. High 67°, low 41°.

Pressure30.45 inHg
Wind13.1 mph SE
Humidity24%
Visibility—
Dew point24°
Tue, 2073° / 50°0Overcast
73 °Overcast

Garrison, Tuesday, 20 October

Overcast. High 73°, low 50°.

Pressure30.33 inHg
Wind12.1 mph SW
Humidity37%
Visibility—
Dew point41°
Wed, 2162° / 54°0.41Rain
62 °Rain

Garrison, Wednesday, 21 October

Rain. High 62°, low 54°.

Pressure30.15 inHg
Wind13.1 mph SW
Humidity83%
Visibility—
Dew point51°
Thu, 2256° / 50°1.12Rain
56 °Rain

Garrison, Thursday, 22 October

Rain. High 56°, low 50°.

Pressure29.77 inHg
Wind11.6 mph N
Humidity94%
Visibility—
Dew point53°

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, IL 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, IL 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.