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As of 02:42 CDT

Weather in Deer Grove, IL

66°Current weather

Deer Grove, Sunday, 9 August, 02:42

Mostly clear. Feels like 67°. High 86°, low 65°.

Pressure29.97 inHg
Wind5.2 mph S
Humidity88%
Visibility6.2 mi
Dew point63°
Mon, 1090° / 72°0.03Light rain
90 °Light rain

Deer Grove, Monday, 10 August

Light rain. High 90°, low 72°.

Pressure29.85 inHg
Wind3.6 mph SE
Humidity79%
Visibility6.2 mi
Dew point76°
Tue, 1186° / 70°0Overcast
86 °Overcast

Deer Grove, Tuesday, 11 August

Overcast. High 86°, low 70°.

Pressure29.80 inHg
Wind8 mph SW
Humidity78%
Visibility6.2 mi
Dew point73°
Wed, 1284° / 68°0.06Light rain
84 °Light rain

Deer Grove, Wednesday, 12 August

Light rain. High 84°, low 68°.

Pressure29.85 inHg
Wind5.1 mph N
Humidity74%
Visibility6.2 mi
Dew point72°
Thu, 1376° / 62°0.49Rain
76 °Rain

Deer Grove, Thursday, 13 August

Rain. High 76°, low 62°.

Pressure30.00 inHg
Wind8.8 mph E
Humidity71%
Visibility—
Dew point64°
Fri, 1473° / 60°0.15Rain
73 °Rain

Deer Grove, Friday, 14 August

Rain. High 73°, low 60°.

Pressure30.15 inHg
Wind11.9 mph E
Humidity64%
Visibility—
Dew point58°
Sat, 1574° / 61°0.06Light rain
74 °Light rain

Deer Grove, Saturday, 15 August

Light rain. High 74°, low 61°.

Pressure30.21 inHg
Wind11.7 mph SE
Humidity69%
Visibility—
Dew point61°
Sun, 1676° / 64°0.02Light rain
76 °Light rain

Deer Grove, Sunday, 16 August

Light rain. High 76°, low 64°.

Pressure30.09 inHg
Wind7.1 mph SE
Humidity82%
Visibility—
Dew point67°
Mon, 1781° / 64°0Overcast
81 °Overcast

Deer Grove, Monday, 17 August

Overcast. High 81°, low 64°.

Pressure30.09 inHg
Wind5.9 mph E
Humidity71%
Visibility—
Dew point67°
Tue, 1880° / 63°0Overcast
80 °Overcast

Deer Grove, Tuesday, 18 August

Overcast. High 80°, low 63°.

Pressure30.00 inHg
Wind9.9 mph S
Humidity73%
Visibility—
Dew point68°
Wed, 1992° / 70°0Overcast
92 °Overcast

Deer Grove, Wednesday, 19 August

Overcast. High 92°, low 70°.

Pressure29.85 inHg
Wind13.7 mph S
Humidity72%
Visibility—
Dew point73°
Thu, 2090° / 76°0Overcast
90 °Overcast

Deer Grove, Thursday, 20 August

Overcast. High 90°, low 76°.

Pressure29.77 inHg
Wind11 mph S
Humidity58%
Visibility—
Dew point70°
Fri, 2186° / 73°0Partly cloudy
86 °Partly cloudy

Deer Grove, Friday, 21 August

Partly cloudy. High 86°, low 73°.

Pressure29.94 inHg
Wind13.3 mph NE
Humidity62%
Visibility—
Dew point69°
Sat, 2292° / 68°0Clear
92 °Clear

Deer Grove, Saturday, 22 August

Clear. High 92°, low 68°.

Pressure29.85 inHg
Wind12.9 mph S
Humidity65%
Visibility—
Dew point73°
Sun, 2392° / 76°0Overcast
92 °Overcast

Deer Grove, Sunday, 23 August

Overcast. High 92°, low 76°.

Pressure29.83 inHg
Wind18.7 mph SW
Humidity54%
Visibility—
Dew point71°
Mon, 2485° / 67°0.68Heavy rain
85 °Heavy rain

Deer Grove, Monday, 24 August

Heavy rain. High 85°, low 67°.

Pressure30.03 inHg
Wind10.6 mph N
Humidity72%
Visibility—
Dew point71°

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 Deer Grove, 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 Deer Grove, 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.