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As of 12:22 CDT

Weather in Flat Rock, IL

73°Current weather

Flat Rock, Sunday, 11 October, 12:22

Partly cloudy. Feels like 73°. High 76°, low 57°.

Pressure30.00 inHg
Wind13.8 mph NW
Humidity60%
Visibility6.2 mi
Dew point58°
Mon, 1285° / 60°0Partly cloudy
85 °Partly cloudy

Flat Rock, Monday, 12 October

Partly cloudy. High 85°, low 60°.

Pressure29.97 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°.

Pressure29.94 inHg
Wind10.9 mph SW
Humidity46%
Visibility6.2 mi
Dew point61°
Wed, 1482° / 71°0.04Light rain
82 °Light rain

Flat Rock, Wednesday, 14 October

Light rain. High 82°, low 71°.

Pressure30.00 inHg
Wind6 mph SW
Humidity64%
Visibility6.2 mi
Dew point69°
Thu, 1581° / 70°0.08Light rain
81 °Light rain

Flat Rock, Thursday, 15 October

Light rain. High 81°, low 70°.

Pressure30.06 inHg
Wind7.6 mph S
Humidity80%
Visibility6.2 mi
Dew point71°
Fri, 1673° / 54°0.43Rain
73 °Rain

Flat Rock, Friday, 16 October

Rain. High 73°, low 54°.

Pressure30.27 inHg
Wind18.3 mph N
Humidity44%
Visibility—
Dew point41°
Sat, 1748° / 35°0Clear
48 °Clear

Flat Rock, Saturday, 17 October

Clear. High 48°, low 35°.

Pressure30.50 inHg
Wind15.7 mph N
Humidity26%
Visibility—
Dew point11°
Sun, 1854° / 32°0Clear
54 °Clear

Flat Rock, Sunday, 18 October

Clear. High 54°, low 32°.

Pressure30.59 inHg
Wind11.6 mph S
Humidity27%
Visibility—
Dew point16°
Mon, 1965° / 36°0Clear
65 °Clear

Flat Rock, Monday, 19 October

Clear. High 65°, low 36°.

Pressure30.45 inHg
Wind13.6 mph SW
Humidity21%
Visibility—
Dew point19°
Tue, 2068° / 43°0Clear
68 °Clear

Flat Rock, Tuesday, 20 October

Clear. High 68°, low 43°.

Pressure30.36 inHg
Wind7.1 mph S
Humidity24%
Visibility—
Dew point26°
Wed, 2171° / 49°0Overcast
71 °Overcast

Flat Rock, Wednesday, 21 October

Overcast. High 71°, low 49°.

Pressure30.27 inHg
Wind7.9 mph SE
Humidity27%
Visibility—
Dew point31°
Thu, 2273° / 49°0Partly cloudy
73 °Partly cloudy

Flat Rock, Thursday, 22 October

Partly cloudy. High 73°, low 49°.

Pressure30.27 inHg
Wind6.2 mph SE
Humidity28%
Visibility—
Dew point33°
Fri, 2376° / 53°0Mostly clear
76 °Mostly clear

Flat Rock, Friday, 23 October

Mostly clear. High 76°, low 53°.

Pressure30.18 inHg
Wind5.4 mph SW
Humidity29%
Visibility—
Dew point37°
Sat, 2479° / 57°0Clear
79 °Clear

Flat Rock, Saturday, 24 October

Clear. High 79°, low 57°.

Pressure30.12 inHg
Wind7.1 mph E
Humidity38%
Visibility—
Dew point47°
Sun, 2579° / 63°0.07Light rain
79 °Light rain

Flat Rock, Sunday, 25 October

Light rain. High 79°, low 63°.

Pressure29.94 inHg
Wind14.2 mph W
Humidity43%
Visibility—
Dew point53°
Mon, 2662° / 46°0.06Light rain
62 °Light rain

Flat Rock, Monday, 26 October

Light rain. High 62°, low 46°.

Pressure29.91 inHg
Wind15.1 mph NW
Humidity47%
Visibility—
Dew point34°

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.