As of 08:05 CDT

Weather in Decorra, IL

57°

Decorra, Saturday, 10 October, 08:05

Clear. Feels like 56°. High 83°, low 57°.

Pressure30.03 inHg

Wind5.7 mph S

Humidity77%

Visibility6.2 mi

Dew point50°

See detailed hourly forecast

Sun, 1183° / 55°

83 °

Decorra, Sunday, 11 October

Clear. High 83°, low 55°.

Pressure29.97 inHg

Wind7.1 mph S

Humidity57%

Visibility6.2 mi

Dew point58°

Mon, 1285° / 65°

85 °

Decorra, Monday, 12 October

Clear. High 85°, low 65°.

Pressure29.83 inHg

Wind12.5 mph SW

Humidity57%

Visibility6.2 mi

Dew point64°

Tue, 1381° / 70°

81 °

Decorra, Tuesday, 13 October

Light rain. High 81°, low 70°.

Pressure29.85 inHg

Wind5.6 mph W

Humidity65%

Visibility6.2 mi

Dew point66°

Wed, 1469° / 63°

0.13

69 °

Decorra, Wednesday, 14 October

Light rain. High 69°, low 63°.

Pressure30.09 inHg

Wind9.8 mph NE

Humidity64%

Visibility—

Dew point56°

Thu, 1560° / 54°

0.55

60 °

Decorra, Thursday, 15 October

Rain. High 60°, low 54°.

Pressure30.30 inHg

Wind12.9 mph N

Humidity92%

Visibility—

Dew point53°

Fri, 1663° / 48°

63 °

Decorra, Friday, 16 October

Overcast. High 63°, low 48°.

Pressure29.97 inHg

Wind18.4 mph W

Humidity35%

Visibility—

Dew point33°

Sat, 1745° / 37°

0.04

45 °

Decorra, Saturday, 17 October

Light rain. High 45°, low 37°.

Pressure30.24 inHg

Wind18.1 mph NW

Humidity95%

Visibility—

Dew point37°

Sun, 1847° / 30°

47 °

Decorra, Sunday, 18 October

Clear. High 47°, low 30°.

Pressure30.50 inHg

Wind13 mph N

Humidity39%

Visibility—

Dew point20°

Mon, 1956° / 33°

56 °

Decorra, Monday, 19 October

Overcast. High 56°, low 33°.

Pressure30.36 inHg

Wind12.5 mph S

Humidity41%

Visibility—

Dew point27°

Tue, 2062° / 41°

62 °

Decorra, Tuesday, 20 October

Overcast. High 62°, low 41°.

Pressure30.27 inHg

Wind11.6 mph S

Humidity41%

Visibility—

Dew point33°

Wed, 2166° / 43°

66 °

Decorra, Wednesday, 21 October

Clear. High 66°, low 43°.

Pressure30.21 inHg

Wind12.5 mph S

Humidity37%

Visibility—

Dew point35°

Thu, 2272° / 48°

72 °

Decorra, Thursday, 22 October

Clear. High 72°, low 48°.

Pressure30.06 inHg

Wind17.3 mph S

Humidity35%

Visibility—

Dew point37°

Fri, 2359° / 53°

0.22

59 °

Decorra, Friday, 23 October

Rain. High 59°, low 53°.

Pressure29.97 inHg

Wind13.5 mph S

Humidity75%

Visibility—

Dew point50°

Sat, 2464° / 49°

0.07

64 °

Decorra, Saturday, 24 October

Light rain. High 64°, low 49°.

Pressure29.74 inHg

Wind14 mph NW

Humidity51%

Visibility—

Dew point44°

Sun, 2556° / 42°

56 °

Decorra, Sunday, 25 October

Partly cloudy. High 56°, low 42°.

Pressure29.91 inHg

Wind13.6 mph W

Humidity44%

Visibility—

Dew point31°

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.