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As of 18:00 CDT

Weather in Decorra, IL

67°Current weather

Decorra, Wednesday, 14 October, 18:00

Overcast. Feels like 67°. High 70°, low 63°.

Pressure30.03 inHg
Wind3 mph NE
Humidity81%
Visibility6.2 mi
Dew point61°
Thu, 1570° / 57°0.22Rain
70 °Rain

Decorra, Thursday, 15 October

Rain. High 70°, low 57°.

Pressure29.94 inHg
Wind7.5 mph SE
Humidity87%
Visibility3.4 mi
Dew point63°
Fri, 1656° / 48°0.07Rain
56 °Rain

Decorra, Friday, 16 October

Rain. High 56°, low 48°.

Pressure30.18 inHg
Wind16.6 mph NW
Humidity59%
Visibility6.2 mi
Dew point40°
Sat, 1756° / 39°0Clear
56 °Clear

Decorra, Saturday, 17 October

Clear. High 56°, low 39°.

Pressure30.56 inHg
Wind0.4 mph N
Humidity46%
Visibility6.2 mi
Dew point32°
Sun, 1862° / 42°0Clear
62 °Clear

Decorra, Sunday, 18 October

Clear. High 62°, low 42°.

Pressure30.45 inHg
Wind9.5 mph S
Humidity51%
Visibility6.2 mi
Dew point39°
Mon, 1965° / 41°0Clear
65 °Clear

Decorra, Monday, 19 October

Clear. High 65°, low 41°.

Pressure30.39 inHg
Wind5.7 mph S
Humidity44%
Visibility—
Dew point38°
Tue, 2070° / 45°0Mostly clear
70 °Mostly clear

Decorra, Tuesday, 20 October

Mostly clear. High 70°, low 45°.

Pressure30.30 inHg
Wind7 mph E
Humidity44%
Visibility—
Dew point41°
Wed, 2174° / 54°0Mostly clear
74 °Mostly clear

Decorra, Wednesday, 21 October

Mostly clear. High 74°, low 54°.

Pressure30.15 inHg
Wind13.6 mph S
Humidity51%
Visibility—
Dew point52°
Thu, 2271° / 63°0.18Light rain
71 °Light rain

Decorra, Thursday, 22 October

Light rain. High 71°, low 63°.

Pressure29.97 inHg
Wind16.3 mph SW
Humidity80%
Visibility—
Dew point62°
Fri, 2376° / 56°0Clear
76 °Clear

Decorra, Friday, 23 October

Clear. High 76°, low 56°.

Pressure30.03 inHg
Wind12.1 mph SE
Humidity60%
Visibility—
Dew point56°
Sat, 2471° / 51°0.15Light rain
71 °Light rain

Decorra, Saturday, 24 October

Light rain. High 71°, low 51°.

Pressure29.88 inHg
Wind19.3 mph SW
Humidity78%
Visibility—
Dew point64°
Sun, 2558° / 43°0Clear
58 °Clear

Decorra, Sunday, 25 October

Clear. High 58°, low 43°.

Pressure30.39 inHg
Wind10.3 mph NW
Humidity38%
Visibility—
Dew point30°
Mon, 2657° / 40°0Clear
57 °Clear

Decorra, Monday, 26 October

Clear. High 57°, low 40°.

Pressure30.42 inHg
Wind6.7 mph NW
Humidity33%
Visibility—
Dew point25°
Tue, 2758° / 43°0Overcast
58 °Overcast

Decorra, Tuesday, 27 October

Overcast. High 58°, low 43°.

Pressure30.24 inHg
Wind12 mph SW
Humidity35%
Visibility—
Dew point29°
Wed, 2856° / 47°0Overcast
56 °Overcast

Decorra, Wednesday, 28 October

Overcast. High 56°, low 47°.

Pressure30.06 inHg
Wind13.2 mph SW
Humidity49%
Visibility—
Dew point36°
Thu, 2964° / 44°0Mostly clear
64 °Mostly clear

Decorra, Thursday, 29 October

Mostly clear. High 64°, low 44°.

Pressure30.03 inHg
Wind10.6 mph SW
Humidity59%
Visibility—
Dew point46°

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 Decorra, 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 Decorra, 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.