Monthly outlook for Caldwell, IL: average high 61.1°, average low 46.7°. That is 0.6° above the climate normal for October. Precipitation is expected on 4 days (about 2.0 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 14 October (77.2°), the coolest 26 October (33.5°).
61.1°/46.7°
Average high / low
+0.6°
Above normal
4 / 4
Wet days / normal
2.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
64.8°
61.5°
+1.8°
24 October – 2 November
55°
57.5°
-1.4°
3 November – 12 November
at normal
52.3°
—
October records over 66 years
89.1°3 October 2025All-time high
21°22 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Peoria (9 mi).
Thu, 1574° / 62°1.59
74 °
Caldwell, Thursday, 15 October
Rain. High 74°, low 62°.
Pressure29.94 inHg
Wind0.5 mph SW
Humidity97%
Visibility1.7 mi
Dew point66°
Fri, 1661° / 48°0.03
61 °
Caldwell, Friday, 16 October
Light rain. High 61°, low 48°.
Pressure30.12 inHg
Wind15.7 mph NW
Humidity51%
Visibility6.2 mi
Dew point37°
Sat, 1756° / 40°0
56 °
Caldwell, Saturday, 17 October
Clear. High 56°, low 40°.
Pressure30.56 inHg
Wind1.3 mph N
Humidity50%
Visibility6.2 mi
Dew point34°
Sun, 1861° / 44°0
61 °
Caldwell, Sunday, 18 October
Clear. High 61°, low 44°.
Pressure30.45 inHg
Wind9.2 mph S
Humidity43%
Visibility—
Dew point35°
Mon, 1964° / 44°0
64 °
Caldwell, Monday, 19 October
Overcast. High 64°, low 44°.
Pressure30.36 inHg
Wind6.6 mph S
Humidity51%
Visibility—
Dew point42°
Tue, 2070° / 51°0
70 °
Caldwell, Tuesday, 20 October
Clear. High 70°, low 51°.
Pressure30.27 inHg
Wind6 mph SW
Humidity43%
Visibility—
Dew point43°
Wed, 2170° / 51°0
70 °
Caldwell, Wednesday, 21 October
Clear. High 70°, low 51°.
Pressure30.12 inHg
Wind11 mph SW
Humidity48%
Visibility—
Dew point46°
Thu, 2260° / 47°0
60 °
Caldwell, Thursday, 22 October
Overcast. High 60°, low 47°.
Pressure30.24 inHg
Wind14.3 mph NE
Humidity48%
Visibility—
Dew point39°
Fri, 2355° / 40°0
55 °
Caldwell, Friday, 23 October
Clear. High 55°, low 40°.
Pressure30.42 inHg
Wind11.1 mph E
Humidity42%
Visibility—
Dew point29°
Sat, 2458° / 40°0
58 °
Caldwell, Saturday, 24 October
Overcast. High 58°, low 40°.
Pressure30.24 inHg
Wind8.9 mph NW
Humidity31%
Visibility—
Dew point24°
Sun, 2552° / 42°0.13
52 °
Caldwell, Sunday, 25 October
Light rain. High 52°, low 42°.
Pressure30.03 inHg
Wind16.7 mph NW
Humidity57%
Visibility—
Dew point36°
Mon, 2654° / 34°0
54 °
Caldwell, Monday, 26 October
Clear. High 54°, low 34°.
Pressure30.09 inHg
Wind7.9 mph W
Humidity38%
Visibility—
Dew point24°
Tue, 2759° / 41°0
59 °
Caldwell, Tuesday, 27 October
Overcast. High 59°, low 41°.
Pressure30.00 inHg
Wind6.1 mph NE
Humidity47%
Visibility—
Dew point34°
Wed, 2857° / 50°0
57 °
Caldwell, Wednesday, 28 October
Overcast. High 57°, low 50°.
Pressure29.97 inHg
Wind7.9 mph E
Humidity51%
Visibility—
Dew point37°
Thu, 2951° / 48°0.2
51 °
Caldwell, Thursday, 29 October
Light rain. High 51°, low 48°.
Pressure29.97 inHg
Wind8.4 mph E
Humidity78%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3059° / 43°0.11
59 °
Caldwell, Friday, 30 October
Climate normal for this date — 60-year average.
Average high59°
Average low43°
Average precipitation0.11 in
Chance of precipitation28%
Record high79° (1971)
Record low25° (1988)
Sat, 3158° / 43°0.17
58 °
Caldwell, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.17 in
Chance of precipitation42%
Record high74° (1974)
Record low24° (2019)
Sun, 0157° / 42°0.18
57 °
Caldwell, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.18 in
Chance of precipitation32%
Record high77° (2016)
Record low22° (2019)
Mon, 0255° / 41°0.08
55 °
Caldwell, Monday, 2 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.08 in
Chance of precipitation33%
Record high75° (1961)
Record low23° (1991)
Tue, 0354° / 40°0.09
54 °
Caldwell, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.09 in
Chance of precipitation23%
Record high74° (1964)
Record low17° (1991)
Wed, 0454° / 41°0.08
54 °
Caldwell, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.08 in
Chance of precipitation23%
Record high74° (1978)
Record low16° (1991)
Thu, 0553° / 39°0.13
53 °
Caldwell, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.13 in
Chance of precipitation25%
Record high74° (1978)
Record low19° (1991)
Fri, 0653° / 38°0.09
53 °
Caldwell, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.09 in
Chance of precipitation25%
Record high71° (2020)
Record low24° (1991)
Sat, 0753° / 38°0.04
53 °
Caldwell, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.04 in
Chance of precipitation17%
Record high69° (1966)
Record low15° (1991)
Sun, 0853° / 38°0.05
53 °
Caldwell, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.05 in
Chance of precipitation20%
Record high75° (1999)
Record low12° (1991)
Mon, 0954° / 39°0.14
54 °
Caldwell, Monday, 9 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.14 in
Chance of precipitation35%
Record high74° (2020)
Record low16° (1991)
Tue, 1051° / 37°0.15
51 °
Caldwell, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.15 in
Chance of precipitation32%
Record high73° (2020)
Record low17° (2018)
Wed, 1149° / 35°0.07
49 °
Caldwell, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.07 in
Chance of precipitation27%
Record high73° (1964)
Record low17° (2019)
Thu, 1248° / 33°0.07
48 °
Caldwell, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.07 in
Chance of precipitation25%
Record high70° (2010)
Record low9° (2019)
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 Caldwell, 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 Caldwell, 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.