Monthly outlook for Colona, IL: average high 62.8°, average low 48.1°. That is 3.8° above the climate normal for October. Precipitation is expected on 4 days (about 2.3 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 22 October (76.3°), the coolest 3 November (38.6°).
62.8°/48.1°
Average high / low
+3.8°
Above normal
4 / 5
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
67.1°
57.6°
+5.3°
1 November – 10 November
55.7°
52.6°
+1.7°
11 November – 20 November
at normal
47.6°
—
October records over 66 years
88.3°3 October 2025All-time high
18.3°30 October 1980All-time low
Climate normals and records are computed from the nearest reference point — Panorama Park (8 mi).
Fri, 2374° / 50°0
74 °
Colona, Friday, 23 October
Clear. High 74°, low 50°.
Pressure30.27 inHg
Wind6.9 mph S
Humidity52%
Visibility6.2 mi
Dew point51°
Sat, 2470° / 53°0
70 °
Colona, Saturday, 24 October
Overcast. High 70°, low 53°.
Pressure30.33 inHg
Wind8 mph S
Humidity55%
Visibility6.2 mi
Dew point50°
Sun, 2574° / 52°0
74 °
Colona, Sunday, 25 October
Mostly clear. High 74°, low 52°.
Pressure30.39 inHg
Wind3.2 mph SW
Humidity56%
Visibility6.2 mi
Dew point52°
Mon, 2671° / 52°0
71 °
Colona, Monday, 26 October
Overcast. High 71°, low 52°.
Pressure30.36 inHg
Wind9.4 mph E
Humidity60%
Visibility—
Dew point52°
Tue, 2767° / 52°0.05
67 °
Colona, Tuesday, 27 October
Light rain. High 67°, low 52°.
Pressure30.27 inHg
Wind7.8 mph E
Humidity70%
Visibility—
Dew point52°
Wed, 2859° / 51°0.02
59 °
Colona, Wednesday, 28 October
Light rain. High 59°, low 51°.
Pressure30.18 inHg
Wind4.4 mph NW
Humidity79%
Visibility—
Dew point49°
Thu, 2957° / 49°0.79
57 °
Colona, Thursday, 29 October
Rain. High 57°, low 49°.
Pressure30.15 inHg
Wind8.9 mph SE
Humidity77%
Visibility—
Dew point49°
Fri, 3062° / 55°0.87
62 °
Colona, Friday, 30 October
Rain. High 62°, low 55°.
Pressure29.80 inHg
Wind12.8 mph SE
Humidity84%
Visibility—
Dew point55°
Sat, 3161° / 52°0.55
61 °
Colona, Saturday, 31 October
Rain. High 61°, low 52°.
Pressure29.77 inHg
Wind10.4 mph S
Humidity88%
Visibility—
Dew point53°
Sun, 0162° / 48°0
62 °
Colona, Sunday, 1 November
Clear. High 62°, low 48°.
Pressure29.97 inHg
Wind7.7 mph NW
Humidity48%
Visibility—
Dew point40°
Mon, 0255° / 44°0
55 °
Colona, Monday, 2 November
Overcast. High 55°, low 44°.
Pressure30.24 inHg
Wind13.9 mph NE
Humidity50%
Visibility—
Dew point34°
Tue, 0355° / 39°0
55 °
Colona, Tuesday, 3 November
Overcast. High 55°, low 39°.
Pressure30.39 inHg
Wind9.6 mph NE
Humidity56%
Visibility—
Dew point37°
Wed, 0455° / 39°0
55 °
Colona, Wednesday, 4 November
Overcast. High 55°, low 39°.
Pressure30.42 inHg
Wind15.1 mph E
Humidity52%
Visibility—
Dew point35°
Thu, 0551° / 43°0
51 °
Colona, Thursday, 5 November
Overcast. High 51°, low 43°.
Pressure30.30 inHg
Wind13.1 mph E
Humidity55%
Visibility—
Dew point34°
Fri, 0657° / 43°0
57 °
Colona, Friday, 6 November
Overcast. High 57°, low 43°.
Pressure30.21 inHg
Wind6 mph NE
Humidity57%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0752° / 37°0.02
52 °
Colona, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.02 in
Chance of precipitation17%
Record high70° (1966)
Record low10° (1991)
Sun, 0852° / 37°0.05
52 °
Colona, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.05 in
Chance of precipitation18%
Record high76° (1999)
Record low10° (1991)
Mon, 0952° / 38°0.11
52 °
Colona, Monday, 9 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.11 in
Chance of precipitation37%
Record high74° (1999)
Record low17° (1991)
Tue, 1050° / 36°0.1
50 °
Colona, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.1 in
Chance of precipitation28%
Record high73° (2022)
Record low16° (2018)
Wed, 1148° / 33°0.06
48 °
Colona, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high72° (1964)
Record low14° (2019)
Thu, 1247° / 33°0.06
47 °
Colona, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high66° (1964)
Record low6° (2019)
Fri, 1347° / 33°0.05
47 °
Colona, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.05 in
Chance of precipitation22%
Record high73° (1999)
Record low6° (1986)
Sat, 1448° / 33°0.06
48 °
Colona, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation28%
Record high71° (2025)
Record low14° (1986)
Sun, 1548° / 34°0.07
48 °
Colona, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.07 in
Chance of precipitation25%
Record high69° (2025)
Record low16° (2019)
Mon, 1648° / 34°0.06
48 °
Colona, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.06 in
Chance of precipitation25%
Record high67° (1971)
Record low17° (1997)
Tue, 1749° / 34°0.13
49 °
Colona, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.13 in
Chance of precipitation25%
Record high73° (2016)
Record low14° (2005)
Wed, 1848° / 35°0.07
48 °
Colona, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.07 in
Chance of precipitation32%
Record high70° (1999)
Record low11° (2014)
Thu, 1948° / 34°0.06
48 °
Colona, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.06 in
Chance of precipitation27%
Record high66° (1979)
Record low17° (2022)
Fri, 2046° / 33°0.1
46 °
Colona, Friday, 20 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.1 in
Chance of precipitation33%
Record high65° (2003)
Record low16° (2022)
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 Colona, 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 Colona, 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.