Monthly outlook for Peotone, IL: average high 57.7°, average low 42.3°. That is 0.2° above the climate normal for October. Precipitation is expected on 3 days (about 0.7 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 25 October (70.4°), the coolest 29 October (28.4°).
57.7°/42.3°
Average high / low
+0.2°
Above normal
3 / 5
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
62.4°
58.3°
+2.3°
29 October – 7 November
49.8°
54.6°
-2.7°
8 November – 17 November
at normal
49°
—
October records over 66 years
87.3°7 October 2007All-time high
22.5°24 October 1981All-time low
Climate normals and records are computed from the nearest reference point — Arbury Hills (14 mi).
Tue, 2067° / 41°0
67 °
Peotone, Tuesday, 20 October
Clear. High 67°, low 41°.
Pressure30.39 inHg
Wind3.5 mph SE
Humidity47%
Visibility6.2 mi
Dew point43°
Wed, 2167° / 43°0
67 °
Peotone, Wednesday, 21 October
Clear. High 67°, low 43°.
Pressure30.30 inHg
Wind2.5 mph SW
Humidity52%
Visibility6.2 mi
Dew point47°
Thu, 2268° / 48°0
68 °
Peotone, Thursday, 22 October
Clear. High 68°, low 48°.
Pressure30.33 inHg
Wind3.8 mph NE
Humidity60%
Visibility6.2 mi
Dew point52°
Fri, 2363° / 44°0
63 °
Peotone, Friday, 23 October
Clear. High 63°, low 44°.
Pressure30.36 inHg
Wind8.3 mph SE
Humidity57%
Visibility—
Dew point44°
Sat, 2464° / 43°0
64 °
Peotone, Saturday, 24 October
Overcast. High 64°, low 43°.
Pressure30.42 inHg
Wind8.3 mph SE
Humidity49%
Visibility—
Dew point40°
Sun, 2570° / 51°0
70 °
Peotone, Sunday, 25 October
Overcast. High 70°, low 51°.
Pressure30.27 inHg
Wind11.5 mph W
Humidity43%
Visibility—
Dew point45°
Mon, 2660° / 57°0
60 °
Peotone, Monday, 26 October
Light rain. High 60°, low 57°.
Pressure30.27 inHg
Wind10.2 mph SE
Humidity47%
Visibility—
Dew point39°
Tue, 2761° / 41°0.3
61 °
Peotone, Tuesday, 27 October
Light rain. High 61°, low 41°.
Pressure29.94 inHg
Wind16.9 mph NW
Humidity76%
Visibility—
Dew point50°
Wed, 2840° / 32°0.07
40 °
Peotone, Wednesday, 28 October
Snow. High 40°, low 32°.
Pressure30.30 inHg
Wind16.1 mph NW
Humidity40%
Visibility—
Dew point16°
Thu, 2949° / 28°0
49 °
Peotone, Thursday, 29 October
Clear. High 49°, low 28°.
Pressure30.24 inHg
Wind11.3 mph W
Humidity34%
Visibility—
Dew point17°
Fri, 3050° / 37°0
50 °
Peotone, Friday, 30 October
Overcast. High 50°, low 37°.
Pressure30.00 inHg
Wind12.4 mph SW
Humidity37%
Visibility—
Dew point20°
Sat, 3151° / 45°0
51 °
Peotone, Saturday, 31 October
Overcast. High 51°, low 45°.
Pressure30.09 inHg
Wind9.1 mph S
Humidity62%
Visibility—
Dew point38°
Sun, 0153° / 45°0.29
53 °
Peotone, Sunday, 1 November
Rain. High 53°, low 45°.
Pressure29.91 inHg
Wind16.3 mph NW
Humidity82%
Visibility—
Dew point45°
Mon, 0247° / 38°0.01
47 °
Peotone, Monday, 2 November
Light rain. High 47°, low 38°.
Pressure30.12 inHg
Wind18.7 mph NW
Humidity61%
Visibility—
Dew point33°
Tue, 0349° / 43°0
49 °
Peotone, Tuesday, 3 November
Overcast. High 49°, low 43°.
Pressure30.00 inHg
Wind9.8 mph NW
Humidity66%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0453° / 41°0.09
53 °
Peotone, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.09 in
Chance of precipitation28%
Record high72° (2015)
Record low18° (1991)
Thu, 0553° / 40°0.12
53 °
Peotone, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.12 in
Chance of precipitation30%
Record high76° (1978)
Record low18° (1991)
Fri, 0653° / 38°0.08
53 °
Peotone, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.08 in
Chance of precipitation35%
Record high72° (1975)
Record low24° (1973)
Sat, 0752° / 38°0.06
52 °
Peotone, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation20%
Record high69° (2020)
Record low20° (1991)
Sun, 0852° / 38°0.06
52 °
Peotone, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation22%
Record high74° (2020)
Record low13° (1991)
Mon, 0952° / 38°0.14
52 °
Peotone, Monday, 9 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.14 in
Chance of precipitation35%
Record high72° (1999)
Record low17° (1991)
Tue, 1051° / 37°0.14
51 °
Peotone, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.14 in
Chance of precipitation33%
Record high72° (2020)
Record low17° (2018)
Wed, 1148° / 35°0.07
48 °
Peotone, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.07 in
Chance of precipitation32%
Record high71° (1964)
Record low18° (2019)
Thu, 1247° / 34°0.06
47 °
Peotone, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.06 in
Chance of precipitation23%
Record high69° (1964)
Record low6° (2019)
Fri, 1347° / 33°0.06
47 °
Peotone, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.06 in
Chance of precipitation20%
Record high70° (1999)
Record low3° (2019)
Sat, 1449° / 34°0.08
49 °
Peotone, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.08 in
Chance of precipitation37%
Record high71° (1971)
Record low12° (1986)
Sun, 1548° / 35°0.09
48 °
Peotone, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation33%
Record high67° (1990)
Record low20° (1982)
Mon, 1647° / 34°0.05
47 °
Peotone, Monday, 16 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.05 in
Chance of precipitation22%
Record high65° (1971)
Record low20° (1997)
Tue, 1748° / 35°0.09
48 °
Peotone, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation27%
Record high70° (2016)
Record low16° (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 Peotone, 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 Peotone, 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.