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As of 18:24 CDT

Weather in Flat Rock, IL

75°Current weather

Flat Rock, Thursday, 15 October, 18:24

Partly cloudy. Feels like 77°. High 75°, low 66°.

Pressure29.88 inHg
Wind10.4 mph SW
Humidity94%
Visibility4.1 mi
Dew point73°
Fri, 1669° / 48°0Partly cloudy
69 °Partly cloudy

Flat Rock, Friday, 16 October

Partly cloudy. High 69°, low 48°.

Pressure30.12 inHg
Wind17.6 mph NW
Humidity41%
Visibility6.2 mi
Dew point36°
Sat, 1758° / 45°0Mostly clear
58 °Mostly clear

Flat Rock, Saturday, 17 October

Mostly clear. High 58°, low 45°.

Pressure30.53 inHg
Wind9.1 mph NE
Humidity44%
Visibility6.2 mi
Dew point34°
Sun, 1864° / 39°0Clear
64 °Clear

Flat Rock, Sunday, 18 October

Clear. High 64°, low 39°.

Pressure30.53 inHg
Wind6.8 mph SE
Humidity40%
Visibility6.2 mi
Dew point35°
Mon, 1969° / 42°0Clear
69 °Clear

Flat Rock, Monday, 19 October

Clear. High 69°, low 42°.

Pressure30.39 inHg
Wind2.8 mph S
Humidity39%
Visibility6.2 mi
Dew point38°
Tue, 2071° / 44°0Clear
71 °Clear

Flat Rock, Tuesday, 20 October

Clear. High 71°, low 44°.

Pressure30.33 inHg
Wind5.2 mph NE
Humidity33%
Visibility—
Dew point36°
Wed, 2172° / 47°0Partly cloudy
72 °Partly cloudy

Flat Rock, Wednesday, 21 October

Partly cloudy. High 72°, low 47°.

Pressure30.30 inHg
Wind4.9 mph E
Humidity42%
Visibility—
Dew point41°
Thu, 2274° / 51°0Clear
74 °Clear

Flat Rock, Thursday, 22 October

Clear. High 74°, low 51°.

Pressure30.27 inHg
Wind6.9 mph SE
Humidity31%
Visibility—
Dew point37°
Fri, 2375° / 52°0Mostly clear
75 °Mostly clear

Flat Rock, Friday, 23 October

Mostly clear. High 75°, low 52°.

Pressure30.21 inHg
Wind9.2 mph SE
Humidity29%
Visibility—
Dew point37°
Sat, 2477° / 55°0Overcast
77 °Overcast

Flat Rock, Saturday, 24 October

Overcast. High 77°, low 55°.

Pressure30.21 inHg
Wind8.5 mph S
Humidity38%
Visibility—
Dew point44°
Sun, 2578° / 58°0Overcast
78 °Overcast

Flat Rock, Sunday, 25 October

Overcast. High 78°, low 58°.

Pressure30.36 inHg
Wind7.4 mph NE
Humidity35%
Visibility—
Dew point45°
Mon, 2678° / 55°0Mostly clear
78 °Mostly clear

Flat Rock, Monday, 26 October

Mostly clear. High 78°, low 55°.

Pressure30.39 inHg
Wind9 mph E
Humidity37%
Visibility—
Dew point45°
Tue, 2776° / 56°0Overcast
76 °Overcast

Flat Rock, Tuesday, 27 October

Overcast. High 76°, low 56°.

Pressure30.30 inHg
Wind9.9 mph S
Humidity33%
Visibility—
Dew point42°
Wed, 2876° / 56°0Overcast
76 °Overcast

Flat Rock, Wednesday, 28 October

Overcast. High 76°, low 56°.

Pressure30.30 inHg
Wind10.4 mph S
Humidity24%
Visibility—
Dew point34°
Thu, 2977° / 51°0Partly cloudy
77 °Partly cloudy

Flat Rock, Thursday, 29 October

Partly cloudy. High 77°, low 51°.

Pressure30.12 inHg
Wind13 mph SW
Humidity36%
Visibility—
Dew point44°
Fri, 3064° / 54°0.11Light rain
64 °Light rain

Flat Rock, Friday, 30 October

Light rain. High 64°, low 54°.

Pressure30.21 inHg
Wind15.1 mph N
Humidity84%
Visibility—
Dew point54°

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.