Monthly outlook for Clayton, IA: average high 55.9°, average low 38°. That is 1° above the climate normal for October. Precipitation is expected on 2 days (about 1.2 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 20 October (66.7°), the coolest 28 October (26.7°).
55.9°/38°
Average high / low
+1°
Above normal
2 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
60.7°
55.4°
+2.9°
29 October – 7 November
47.8°
50.8°
-1.7°
8 November – 17 November
at normal
45.1°
—
October records over 66 years
86.4°3 October 2025All-time high
20.7°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Bloomington (11 mi).
Tue, 2067° / 41°0
67 °
Clayton, Tuesday, 20 October
Clear. High 67°, low 41°.
Pressure30.36 inHg
Wind6.2 mph SE
Humidity55%
Visibility6.2 mi
Dew point45°
Wed, 2166° / 43°0
66 °
Clayton, Wednesday, 21 October
Mostly clear. High 66°, low 43°.
Pressure30.27 inHg
Wind4.2 mph SW
Humidity63%
Visibility6.2 mi
Dew point50°
Thu, 2266° / 45°0
66 °
Clayton, Thursday, 22 October
Clear. High 66°, low 45°.
Pressure30.33 inHg
Wind4.8 mph SE
Humidity62%
Visibility6.2 mi
Dew point52°
Fri, 2364° / 49°0
64 °
Clayton, Friday, 23 October
Clear. High 64°, low 49°.
Pressure30.30 inHg
Wind9.2 mph SE
Humidity70%
Visibility6.2 mi
Dew point51°
Sat, 2465° / 50°0
65 °
Clayton, Saturday, 24 October
Overcast. High 65°, low 50°.
Pressure30.30 inHg
Wind11.6 mph S
Humidity55%
Visibility—
Dew point45°
Sun, 2560° / 48°0.02
60 °
Clayton, Sunday, 25 October
Light rain. High 60°, low 48°.
Pressure30.30 inHg
Wind10.9 mph NW
Humidity36%
Visibility—
Dew point32°
Mon, 2657° / 43°0.02
57 °
Clayton, Monday, 26 October
Light rain. High 57°, low 43°.
Pressure30.21 inHg
Wind11.8 mph S
Humidity44%
Visibility—
Dew point34°
Tue, 2756° / 34°0.96
56 °
Clayton, Tuesday, 27 October
Rain. High 56°, low 34°.
Pressure30.09 inHg
Wind22.1 mph SW
Humidity83%
Visibility—
Dew point38°
Wed, 2840° / 27°0
40 °
Clayton, Wednesday, 28 October
Clear. High 40°, low 27°.
Pressure30.36 inHg
Wind14.5 mph NW
Humidity35%
Visibility—
Dew point11°
Thu, 2949° / 28°0
49 °
Clayton, Thursday, 29 October
Clear. High 49°, low 28°.
Pressure30.15 inHg
Wind11.1 mph SW
Humidity47%
Visibility—
Dew point26°
Fri, 3053° / 34°0
53 °
Clayton, Friday, 30 October
Overcast. High 53°, low 34°.
Pressure29.91 inHg
Wind6.7 mph SW
Humidity50%
Visibility—
Dew point31°
Sat, 3148° / 32°0
48 °
Clayton, Saturday, 31 October
Overcast. High 48°, low 32°.
Pressure30.09 inHg
Wind9.6 mph E
Humidity60%
Visibility—
Dew point32°
Sun, 0147° / 36°0.24
47 °
Clayton, Sunday, 1 November
Light rain. High 47°, low 36°.
Pressure29.94 inHg
Wind16.2 mph N
Humidity93%
Visibility—
Dew point43°
Mon, 0245° / 31°0
45 °
Clayton, Monday, 2 November
Clear. High 45°, low 31°.
Pressure30.24 inHg
Wind13.7 mph N
Humidity49%
Visibility—
Dew point23°
Tue, 0345° / 30°0
45 °
Clayton, Tuesday, 3 November
Overcast. High 45°, low 30°.
Pressure30.06 inHg
Wind5.6 mph NW
Humidity49%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0449° / 37°0.09
49 °
Clayton, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.09 in
Chance of precipitation30%
Record high70° (2008)
Record low9° (1991)
Thu, 0549° / 36°0.08
49 °
Clayton, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.08 in
Chance of precipitation27%
Record high67° (2020)
Record low17° (1991)
Fri, 0649° / 36°0.06
49 °
Clayton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.06 in
Chance of precipitation28%
Record high67° (2020)
Record low13° (1991)
Sat, 0749° / 35°0.02
49 °
Clayton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.02 in
Chance of precipitation18%
Record high67° (2001)
Record low-4° (1991)
Sun, 0848° / 35°0.04
48 °
Clayton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.04 in
Chance of precipitation18%
Record high71° (1999)
Record low6° (1991)
Mon, 0948° / 35°0.09
48 °
Clayton, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation38%
Record high70° (1999)
Record low16° (1991)
Tue, 1046° / 33°0.11
46 °
Clayton, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.11 in
Chance of precipitation30%
Record high68° (2022)
Record low13° (2017)
Wed, 1145° / 31°0.08
45 °
Clayton, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.08 in
Chance of precipitation27%
Record high68° (1964)
Record low13° (2019)
Thu, 1243° / 31°0.06
43 °
Clayton, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.06 in
Chance of precipitation30%
Record high63° (1964)
Record low6° (2019)
Fri, 1344° / 30°0.06
44 °
Clayton, Friday, 13 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.06 in
Chance of precipitation23%
Record high69° (1999)
Record low5° (1986)
Sat, 1444° / 31°0.02
44 °
Clayton, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.02 in
Chance of precipitation20%
Record high65° (2025)
Record low14° (1986)
Sun, 1544° / 32°0.06
44 °
Clayton, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.06 in
Chance of precipitation25%
Record high66° (2001)
Record low17° (2014)
Mon, 1645° / 31°0.06
45 °
Clayton, Monday, 16 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.06 in
Chance of precipitation25%
Record high61° (1988)
Record low16° (2014)
Tue, 1745° / 32°0.09
45 °
Clayton, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.09 in
Chance of precipitation22%
Record high69° (2016)
Record low11° (2005)
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, IA 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, IA 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.