As of 00:18 CDT

Weather in Clayton, IL

42°Current weather

Clayton, Saturday, 17 October, 00:18

Clear. Feels like 37°. High 55°, low 37°.

Pressure30.50 inHg
Wind8.1 mph NW
Humidity88%
Visibility6.2 mi
Dew point38°

Monthly outlook for Clayton, IL: average high 65.3°, average low 48.6°. That is 2.6° above the climate normal for October. Precipitation is expected on 3 days (about 1.6 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 24 October (78.1°), the coolest 17 October (36.6°).

65.3°/48.6°
Average high / low
+2.6°
Above normal
3 / 4
Wet days / normal
1.6 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
17 October – 26 October68.3°61.7°+3.6°
27 October – 5 November60.3°57.5°+1.5°
6 November – 15 Novemberat normal52.4°—

October records over 66 years

90.1°10 October 1963All-time high
25.2°26 October 1962All-time low

Climate normals and records are computed from the nearest reference point — Camden (13 mi).

Sun, 1863° / 42°0Clear
63 °Clear

Clayton, Sunday, 18 October

Clear. High 63°, low 42°.

Pressure30.45 inHg
Wind10.9 mph S
Humidity49%
Visibility6.2 mi
Dew point40°
Mon, 1967° / 43°0Partly cloudy
67 °Partly cloudy

Clayton, Monday, 19 October

Partly cloudy. High 67°, low 43°.

Pressure30.39 inHg
Wind4.7 mph S
Humidity49%
Visibility6.2 mi
Dew point44°
Tue, 2069° / 46°0Clear
69 °Clear

Clayton, Tuesday, 20 October

Clear. High 69°, low 46°.

Pressure30.33 inHg
Wind4.9 mph SE
Humidity50%
Visibility6.2 mi
Dew point46°
Wed, 2171° / 50°0Partly cloudy
71 °Partly cloudy

Clayton, Wednesday, 21 October

Partly cloudy. High 71°, low 50°.

Pressure30.27 inHg
Wind6 mph S
Humidity48%
Visibility—
Dew point45°
Thu, 2275° / 53°0Mostly clear
75 °Mostly clear

Clayton, Thursday, 22 October

Mostly clear. High 75°, low 53°.

Pressure30.18 inHg
Wind6.5 mph SE
Humidity41%
Visibility—
Dew point45°
Fri, 2377° / 56°0Mostly clear
77 °Mostly clear

Clayton, Friday, 23 October

Mostly clear. High 77°, low 56°.

Pressure30.18 inHg
Wind10.2 mph SE
Humidity26%
Visibility—
Dew point36°
Sat, 2478° / 57°0Overcast
78 °Overcast

Clayton, Saturday, 24 October

Overcast. High 78°, low 57°.

Pressure30.18 inHg
Wind10.6 mph S
Humidity31%
Visibility—
Dew point41°
Sun, 2558° / 52°0Overcast
58 °Overcast

Clayton, Sunday, 25 October

Overcast. High 58°, low 52°.

Pressure30.36 inHg
Wind11.1 mph N
Humidity60%
Visibility—
Dew point40°
Mon, 2669° / 52°0Light rain
69 °Light rain

Clayton, Monday, 26 October

Light rain. High 69°, low 52°.

Pressure30.24 inHg
Wind10.4 mph SE
Humidity45%
Visibility—
Dew point42°
Tue, 2763° / 59°0.34Light rain
63 °Light rain

Clayton, Tuesday, 27 October

Light rain. High 63°, low 59°.

Pressure30.15 inHg
Wind10.4 mph S
Humidity86%
Visibility—
Dew point58°
Wed, 2860° / 50°0.72Rain
60 °Rain

Clayton, Wednesday, 28 October

Rain. High 60°, low 50°.

Pressure30.15 inHg
Wind11.5 mph N
Humidity52%
Visibility—
Dew point41°
Thu, 2959° / 46°0.53Rain
59 °Rain

Clayton, Thursday, 29 October

Rain. High 59°, low 46°.

Pressure29.85 inHg
Wind17.1 mph E
Humidity95%
Visibility—
Dew point45°
Fri, 3062° / 48°0.04Light rain
62 °Light rain

Clayton, Friday, 30 October

Light rain. High 62°, low 48°.

Pressure29.65 inHg
Wind16.9 mph NW
Humidity84%
Visibility—
Dew point51°
Sat, 3156° / 44°0Clear
56 °Clear

Clayton, Saturday, 31 October

Clear. High 56°, low 44°.

Pressure30.18 inHg
Wind15.7 mph NW
Humidity50%
Visibility—
Dew point35°
Sun, 0160° / 43°0Clear
60 °Clear

Clayton, Sunday, 1 November

Clear. High 60°, low 43°.

Pressure30.15 inHg
Wind6.4 mph W
Humidity53%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0257° / 42°0.07Climate normal
57 °Climate normal

Clayton, Monday, 2 November

Climate normal for this date — 60-year average.

Average high57°
Average low42°
Average precipitation0.07 in
Chance of precipitation32%
Record high76° (1961)
Record low24° (1991)
Tue, 0356° / 41°0.11Climate normal
56 °Climate normal

Clayton, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high56°
Average low41°
Average precipitation0.11 in
Chance of precipitation27%
Record high75° (1987)
Record low17° (1991)
Wed, 0456° / 42°0.09Climate normal
56 °Climate normal

Clayton, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high56°
Average low42°
Average precipitation0.09 in
Chance of precipitation25%
Record high76° (1978)
Record low15° (1991)
Thu, 0555° / 41°0.14Climate normal
55 °Climate normal

Clayton, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high55°
Average low41°
Average precipitation0.14 in
Chance of precipitation32%
Record high75° (1978)
Record low21° (1991)
Fri, 0655° / 40°0.11Climate normal
55 °Climate normal

Clayton, Friday, 6 November

Climate normal for this date — 60-year average.

Average high55°
Average low40°
Average precipitation0.11 in
Chance of precipitation25%
Record high72° (2020)
Record low24° (1991)
Sat, 0755° / 40°0.03Climate normal
55 °Climate normal

Clayton, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high55°
Average low40°
Average precipitation0.03 in
Chance of precipitation13%
Record high72° (1966)
Record low13° (1991)
Sun, 0855° / 40°0.05Climate normal
55 °Climate normal

Clayton, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high55°
Average low40°
Average precipitation0.05 in
Chance of precipitation22%
Record high77° (1999)
Record low-1° (1991)
Mon, 0955° / 40°0.13Climate normal
55 °Climate normal

Clayton, Monday, 9 November

Climate normal for this date — 60-year average.

Average high55°
Average low40°
Average precipitation0.13 in
Chance of precipitation33%
Record high74° (1999)
Record low4° (1991)
Tue, 1053° / 38°0.16Climate normal
53 °Climate normal

Clayton, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high53°
Average low38°
Average precipitation0.16 in
Chance of precipitation27%
Record high74° (2020)
Record low16° (2018)
Wed, 1151° / 36°0.06Climate normal
51 °Climate normal

Clayton, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high51°
Average low36°
Average precipitation0.06 in
Chance of precipitation25%
Record high75° (1964)
Record low17° (2019)
Thu, 1249° / 35°0.06Climate normal
49 °Climate normal

Clayton, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high49°
Average low35°
Average precipitation0.06 in
Chance of precipitation22%
Record high69° (1999)
Record low9° (2019)
Fri, 1350° / 35°0.06Climate normal
50 °Climate normal

Clayton, Friday, 13 November

Climate normal for this date — 60-year average.

Average high50°
Average low35°
Average precipitation0.06 in
Chance of precipitation15%
Record high74° (1999)
Record low9° (1986)
Sat, 1451° / 36°0.07Climate normal
51 °Climate normal

Clayton, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high51°
Average low36°
Average precipitation0.07 in
Chance of precipitation27%
Record high75° (2025)
Record low14° (1986)
Sun, 1551° / 37°0.06Climate normal
51 °Climate normal

Clayton, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high51°
Average low37°
Average precipitation0.06 in
Chance of precipitation25%
Record high72° (2025)
Record low20° (2014)

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.