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As of 18:45 CDT

Weather in Clayton, IL

85°Current weather

Clayton, Saturday, 8 August, 18:45

Clear. Feels like 92°. High 86°, low 69°.

Pressure29.97 inHg
Wind5.6 mph NE
Humidity67%
Visibility6.2 mi
Dew point73°
Sun, 0995° / 71°0Partly cloudy
95 °Partly cloudy

Clayton, Sunday, 9 August

Partly cloudy. High 95°, low 71°.

Pressure29.91 inHg
Wind11.6 mph SW
Humidity52%
Visibility6.2 mi
Dew point70°
Mon, 1097° / 74°0Partly cloudy
97 °Partly cloudy

Clayton, Monday, 10 August

Partly cloudy. High 97°, low 74°.

Pressure29.88 inHg
Wind13.8 mph SW
Humidity46%
Visibility6.2 mi
Dew point69°
Tue, 1197° / 78°0Light rain
97 °Light rain

Clayton, Tuesday, 11 August

Light rain. High 97°, low 78°.

Pressure29.80 inHg
Wind18.7 mph SW
Humidity49%
Visibility6.2 mi
Dew point66°
Wed, 1293° / 72°0.15Rain
93 °Rain

Clayton, Wednesday, 12 August

Rain. High 93°, low 72°.

Pressure29.85 inHg
Wind12.4 mph NE
Humidity60%
Visibility6.2 mi
Dew point72°
Thu, 1373° / 68°0.33Rain
73 °Rain

Clayton, Thursday, 13 August

Rain. High 73°, low 68°.

Pressure29.88 inHg
Wind10.7 mph SW
Humidity94%
Visibility—
Dew point71°
Fri, 1479° / 58°0Mostly clear
79 °Mostly clear

Clayton, Friday, 14 August

Mostly clear. High 79°, low 58°.

Pressure30.18 inHg
Wind10.5 mph NE
Humidity41%
Visibility—
Dew point49°
Sat, 1579° / 57°0Partly cloudy
79 °Partly cloudy

Clayton, Saturday, 15 August

Partly cloudy. High 79°, low 57°.

Pressure30.27 inHg
Wind9.6 mph SE
Humidity44%
Visibility—
Dew point52°
Sun, 1677° / 62°0.02Light rain
77 °Light rain

Clayton, Sunday, 16 August

Light rain. High 77°, low 62°.

Pressure30.12 inHg
Wind14.3 mph S
Humidity77%
Visibility—
Dew point66°
Mon, 1789° / 69°0.09Light rain
89 °Light rain

Clayton, Monday, 17 August

Light rain. High 89°, low 69°.

Pressure29.91 inHg
Wind13.1 mph SE
Humidity62%
Visibility—
Dew point71°
Tue, 1890° / 72°0Overcast
90 °Overcast

Clayton, Tuesday, 18 August

Overcast. High 90°, low 72°.

Pressure30.00 inHg
Wind8.5 mph E
Humidity59%
Visibility—
Dew point69°
Wed, 1995° / 71°0Mostly clear
95 °Mostly clear

Clayton, Wednesday, 19 August

Mostly clear. High 95°, low 71°.

Pressure29.88 inHg
Wind7.1 mph SE
Humidity46%
Visibility—
Dew point65°
Thu, 2084° / 70°0.21Rain
84 °Rain

Clayton, Thursday, 20 August

Rain. High 84°, low 70°.

Pressure29.88 inHg
Wind10.8 mph N
Humidity65%
Visibility—
Dew point68°
Fri, 2186° / 66°0Partly cloudy
86 °Partly cloudy

Clayton, Friday, 21 August

Partly cloudy. High 86°, low 66°.

Pressure29.94 inHg
Wind10.1 mph NE
Humidity44%
Visibility—
Dew point57°
Sat, 2289° / 64°0Clear
89 °Clear

Clayton, Saturday, 22 August

Clear. High 89°, low 64°.

Pressure29.91 inHg
Wind18.9 mph NE
Humidity40%
Visibility—
Dew point57°
Sun, 2377° / 54°0.03Light rain
77 °Light rain

Clayton, Sunday, 23 August

Light rain. High 77°, low 54°.

Pressure30.18 inHg
Wind13.7 mph NE
Humidity44%
Visibility—
Dew point44°

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 Clayton, 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 Clayton, 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.