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As of 16:21 CDT

Weather in Flat Rock, IL

71°Current weather

Flat Rock, Saturday, 10 October, 16:21

Overcast. Feels like 71°. High 72°, low 55°.

Pressure30.06 inHg
Wind8.1 mph SE
Humidity49%
Visibility6.2 mi
Dew point52°
Sun, 1178° / 53°0Clear
78 °Clear

Flat Rock, Sunday, 11 October

Clear. High 78°, low 53°.

Pressure29.97 inHg
Wind7 mph NW
Humidity54%
Visibility6.2 mi
Dew point56°
Mon, 1286° / 55°0Mostly clear
86 °Mostly clear

Flat Rock, Monday, 12 October

Mostly clear. High 86°, low 55°.

Pressure29.94 inHg
Wind9.4 mph SW
Humidity48%
Visibility6.2 mi
Dew point60°
Tue, 1387° / 67°0Clear
87 °Clear

Flat Rock, Tuesday, 13 October

Clear. High 87°, low 67°.

Pressure29.91 inHg
Wind10.8 mph SW
Humidity46%
Visibility6.2 mi
Dew point61°
Wed, 1480° / 71°0.36Rain
80 °Rain

Flat Rock, Wednesday, 14 October

Rain. High 80°, low 71°.

Pressure30.00 inHg
Wind6.2 mph SW
Humidity83%
Visibility6.2 mi
Dew point71°
Thu, 1572° / 65°0.53Rain
72 °Rain

Flat Rock, Thursday, 15 October

Rain. High 72°, low 65°.

Pressure30.12 inHg
Wind9.7 mph NE
Humidity86%
Visibility—
Dew point65°
Fri, 1669° / 48°0.44Rain
69 °Rain

Flat Rock, Friday, 16 October

Rain. High 69°, low 48°.

Pressure30.09 inHg
Wind17.6 mph NW
Humidity44%
Visibility—
Dew point42°
Sat, 1743° / 35°0Overcast
43 °Overcast

Flat Rock, Saturday, 17 October

Overcast. High 43°, low 35°.

Pressure30.27 inHg
Wind17.7 mph NW
Humidity54%
Visibility—
Dew point24°
Sun, 1850° / 33°0Clear
50 °Clear

Flat Rock, Sunday, 18 October

Clear. High 50°, low 33°.

Pressure30.53 inHg
Wind13.5 mph NW
Humidity38%
Visibility—
Dew point22°
Mon, 1954° / 32°0Partly cloudy
54 °Partly cloudy

Flat Rock, Monday, 19 October

Partly cloudy. High 54°, low 32°.

Pressure30.65 inHg
Wind6.6 mph SE
Humidity26%
Visibility—
Dew point15°
Tue, 2060° / 36°0Clear
60 °Clear

Flat Rock, Tuesday, 20 October

Clear. High 60°, low 36°.

Pressure30.45 inHg
Wind7.8 mph S
Humidity28%
Visibility—
Dew point22°
Wed, 2166° / 41°0Clear
66 °Clear

Flat Rock, Wednesday, 21 October

Clear. High 66°, low 41°.

Pressure30.36 inHg
Wind9.7 mph S
Humidity27%
Visibility—
Dew point27°
Thu, 2269° / 45°0Clear
69 °Clear

Flat Rock, Thursday, 22 October

Clear. High 69°, low 45°.

Pressure30.30 inHg
Wind11.9 mph S
Humidity27%
Visibility—
Dew point30°
Fri, 2355° / 49°0.53Rain
55 °Rain

Flat Rock, Friday, 23 October

Rain. High 55°, low 49°.

Pressure30.18 inHg
Wind9.6 mph N
Humidity86%
Visibility—
Dew point46°
Sat, 2454° / 45°0.15Light rain
54 °Light rain

Flat Rock, Saturday, 24 October

Light rain. High 54°, low 45°.

Pressure30.09 inHg
Wind12.4 mph N
Humidity79%
Visibility—
Dew point46°
Sun, 2555° / 50°0.03Light rain
55 °Light rain

Flat Rock, Sunday, 25 October

Light rain. High 55°, low 50°.

Pressure30.06 inHg
Wind12.7 mph N
Humidity77%
Visibility—
Dew point48°

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 Flat Rock, 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 Flat Rock, 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.