As of 09:50 CDT

Weather in Decorra, IL

66°

Decorra, Sunday, 11 October, 09:50

Clear. Feels like 65°. High 82°, low 55°.

Pressure29.97 inHg

Wind9 mph S

Humidity71%

Visibility6.2 mi

Dew point56°

See detailed hourly forecast

Mon, 1288° / 61°

88 °

Decorra, Monday, 12 October

Clear. High 88°, low 61°.

Pressure29.83 inHg

Wind13.1 mph SW

Humidity58%

Visibility6.2 mi

Dew point64°

Tue, 1385° / 69°

0.05

85 °

Decorra, Tuesday, 13 October

Rain. High 85°, low 69°.

Pressure29.85 inHg

Wind5.3 mph W

Humidity66%

Visibility6.2 mi

Dew point67°

Wed, 1474° / 65°

0.08

74 °

Decorra, Wednesday, 14 October

Light rain. High 74°, low 65°.

Pressure30.03 inHg

Wind9.1 mph NE

Humidity71%

Visibility6.2 mi

Dew point61°

Thu, 1567° / 60°

1.21

67 °

Decorra, Thursday, 15 October

Rain. High 67°, low 60°.

Pressure30.03 inHg

Wind11.2 mph E

Humidity95%

Visibility—

Dew point61°

Fri, 1661° / 50°

0.06

61 °

Decorra, Friday, 16 October

Light rain. High 61°, low 50°.

Pressure30.45 inHg

Wind15.9 mph N

Humidity51%

Visibility—

Dew point40°

Sat, 1746° / 33°

46 °

Decorra, Saturday, 17 October

Clear. High 46°, low 33°.

Pressure30.59 inHg

Wind10.1 mph N

Humidity29%

Visibility—

Dew point12°

Sun, 1857° / 32°

57 °

Decorra, Sunday, 18 October

Clear. High 57°, low 32°.

Pressure30.42 inHg

Wind19.6 mph S

Humidity29%

Visibility—

Dew point19°

Mon, 1964° / 43°

64 °

Decorra, Monday, 19 October

Overcast. High 64°, low 43°.

Pressure30.33 inHg

Wind14.6 mph S

Humidity38%

Visibility—

Dew point32°

Tue, 2067° / 45°

67 °

Decorra, Tuesday, 20 October

Overcast. High 67°, low 45°.

Pressure30.27 inHg

Wind10.9 mph S

Humidity31%

Visibility—

Dew point31°

Wed, 2170° / 52°

70 °

Decorra, Wednesday, 21 October

Overcast. High 70°, low 52°.

Pressure30.18 inHg

Wind14.4 mph S

Humidity31%

Visibility—

Dew point34°

Thu, 2271° / 58°

0.01

71 °

Decorra, Thursday, 22 October

Light rain. High 71°, low 58°.

Pressure30.18 inHg

Wind9.7 mph S

Humidity46%

Visibility—

Dew point47°

Fri, 2376° / 57°

0.02

76 °

Decorra, Friday, 23 October

Light rain. High 76°, low 57°.

Pressure30.12 inHg

Wind9.6 mph W

Humidity49%

Visibility—

Dew point51°

Sat, 2473° / 58°

0.01

73 °

Decorra, Saturday, 24 October

Light rain. High 73°, low 58°.

Pressure30.12 inHg

Wind7.7 mph E

Humidity59%

Visibility—

Dew point55°

Sun, 2577° / 54°

0.61

77 °

Decorra, Sunday, 25 October

Rain. High 77°, low 54°.

Pressure29.88 inHg

Wind15.8 mph N

Humidity57%

Visibility—

Dew point58°

Mon, 2652° / 43°

52 °

Decorra, Monday, 26 October

Overcast. High 52°, low 43°.

Pressure29.94 inHg

Wind17.7 mph NW

Humidity53%

Visibility—

Dew point35°

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.