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As of 20:04 CDT

Weather in DeKalb, IL

73°Current weather

DeKalb, Saturday, 8 August, 20:04

Clear. Feels like 73°. High 82°, low 67°.

Pressure30.00 inHg
Wind3.7 mph W
Humidity76%
Visibility6.2 mi
Dew point65°
Sun, 0988° / 62°0.35Rain
88 °Rain

DeKalb, Sunday, 9 August

Rain. High 88°, low 62°.

Pressure29.91 inHg
Wind13.3 mph S
Humidity80%
Visibility6.2 mi
Dew point74°
Mon, 1086° / 69°0.41Heavy rain
86 °Heavy rain

DeKalb, Monday, 10 August

Heavy rain. High 86°, low 69°.

Pressure29.88 inHg
Wind7.6 mph SE
Humidity77%
Visibility6.2 mi
Dew point75°
Tue, 1184° / 71°0.03Light rain
84 °Light rain

DeKalb, Tuesday, 11 August

Light rain. High 84°, low 71°.

Pressure29.77 inHg
Wind9.1 mph S
Humidity83%
Visibility6.2 mi
Dew point72°
Wed, 1279° / 66°0.02Light rain
79 °Light rain

DeKalb, Wednesday, 12 August

Light rain. High 79°, low 66°.

Pressure29.88 inHg
Wind7.1 mph NW
Humidity81%
Visibility6.2 mi
Dew point70°
Thu, 1372° / 60°0Overcast
72 °Overcast

DeKalb, Thursday, 13 August

Overcast. High 72°, low 60°.

Pressure30.03 inHg
Wind8.8 mph E
Humidity70%
Visibility—
Dew point60°
Fri, 1476° / 57°0Clear
76 °Clear

DeKalb, Friday, 14 August

Clear. High 76°, low 57°.

Pressure30.12 inHg
Wind7 mph SE
Humidity61%
Visibility—
Dew point58°
Sat, 1567° / 59°0.03Light rain
67 °Light rain

DeKalb, Saturday, 15 August

Light rain. High 67°, low 59°.

Pressure30.30 inHg
Wind8.6 mph S
Humidity67%
Visibility—
Dew point55°
Sun, 1672° / 59°0Overcast
72 °Overcast

DeKalb, Sunday, 16 August

Overcast. High 72°, low 59°.

Pressure30.15 inHg
Wind6.3 mph SE
Humidity66%
Visibility—
Dew point59°
Mon, 1778° / 63°0Overcast
78 °Overcast

DeKalb, Monday, 17 August

Overcast. High 78°, low 63°.

Pressure30.06 inHg
Wind5.1 mph W
Humidity73%
Visibility—
Dew point64°
Tue, 1881° / 64°0Overcast
81 °Overcast

DeKalb, Tuesday, 18 August

Overcast. High 81°, low 64°.

Pressure29.97 inHg
Wind11.9 mph SW
Humidity71%
Visibility—
Dew point67°
Wed, 1974° / 58°0.03Light rain
74 °Light rain

DeKalb, Wednesday, 19 August

Light rain. High 74°, low 58°.

Pressure29.94 inHg
Wind14.9 mph NW
Humidity82%
Visibility—
Dew point59°
Thu, 2063° / 51°0Light rain
63 °Light rain

DeKalb, Thursday, 20 August

Light rain. High 63°, low 51°.

Pressure30.09 inHg
Wind11.9 mph N
Humidity76%
Visibility—
Dew point52°
Fri, 2173° / 52°0Mostly clear
73 °Mostly clear

DeKalb, Friday, 21 August

Mostly clear. High 73°, low 52°.

Pressure30.09 inHg
Wind8.5 mph E
Humidity62%
Visibility—
Dew point56°
Sat, 2270° / 54°0.01Light rain
70 °Light rain

DeKalb, Saturday, 22 August

Light rain. High 70°, low 54°.

Pressure29.88 inHg
Wind10.5 mph SE
Humidity84%
Visibility—
Dew point57°
Sun, 2379° / 63°0Mostly clear
79 °Mostly clear

DeKalb, Sunday, 23 August

Mostly clear. High 79°, low 63°.

Pressure29.91 inHg
Wind14.2 mph W
Humidity50%
Visibility—
Dew point57°

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 DeKalb, 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 DeKalb, 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.