Monthly outlook for Adeline, IL: average high 63.7°, average low 50°. That is 3.6° above the climate normal for October. Precipitation is expected on 6 days (about 2.1 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 30 October (71.8°), the coolest 17 October (35.4°).
63.7°/50°
Average high / low
+3.6°
Above normal
6 / 5
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
63.4°
58.5°
+2.7°
25 October – 3 November
64.2°
54.3°
+5.5°
4 November – 13 November
at normal
48.6°
—
October records over 66 years
86.4°3 October 2025All-time high
21.4°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Freeport (13 mi).
Fri, 1653° / 44°0.02
53 °
Adeline, Friday, 16 October
Light rain. High 53°, low 44°.
Pressure30.12 inHg
Wind19.7 mph N
Humidity66%
Visibility5.3 mi
Dew point42°
Sat, 1756° / 35°0
56 °
Adeline, Saturday, 17 October
Clear. High 56°, low 35°.
Pressure30.53 inHg
Wind7.6 mph SW
Humidity45%
Visibility6.2 mi
Dew point32°
Sun, 1861° / 42°0
61 °
Adeline, Sunday, 18 October
Clear. High 61°, low 42°.
Pressure30.39 inHg
Wind15.5 mph SW
Humidity47%
Visibility6.2 mi
Dew point38°
Mon, 1963° / 43°0
63 °
Adeline, Monday, 19 October
Overcast. High 63°, low 43°.
Pressure30.30 inHg
Wind9.9 mph S
Humidity53%
Visibility—
Dew point42°
Tue, 2067° / 47°0
67 °
Adeline, Tuesday, 20 October
Light rain. High 67°, low 47°.
Pressure30.30 inHg
Wind6 mph S
Humidity52%
Visibility—
Dew point45°
Wed, 2167° / 51°0
67 °
Adeline, Wednesday, 21 October
Overcast. High 67°, low 51°.
Pressure30.33 inHg
Wind7.7 mph SE
Humidity56%
Visibility—
Dew point48°
Thu, 2265° / 53°0
65 °
Adeline, Thursday, 22 October
Overcast. High 65°, low 53°.
Pressure30.21 inHg
Wind10.6 mph S
Humidity57%
Visibility—
Dew point48°
Fri, 2369° / 55°0
69 °
Adeline, Friday, 23 October
Overcast. High 69°, low 55°.
Pressure30.21 inHg
Wind14.7 mph SE
Humidity45%
Visibility—
Dew point45°
Sat, 2467° / 56°0.04
67 °
Adeline, Saturday, 24 October
Light rain. High 67°, low 56°.
Pressure30.12 inHg
Wind16.9 mph S
Humidity52%
Visibility—
Dew point47°
Sun, 2561° / 45°0
61 °
Adeline, Sunday, 25 October
Clear. High 61°, low 45°.
Pressure30.53 inHg
Wind10.8 mph NW
Humidity47%
Visibility—
Dew point38°
Mon, 2661° / 43°0
61 °
Adeline, Monday, 26 October
Overcast. High 61°, low 43°.
Pressure30.47 inHg
Wind11.1 mph SE
Humidity48%
Visibility—
Dew point37°
Tue, 2769° / 58°0.35
69 °
Adeline, Tuesday, 27 October
Rain. High 69°, low 58°.
Pressure30.09 inHg
Wind15.8 mph SW
Humidity54%
Visibility—
Dew point51°
Wed, 2860° / 58°0.81
60 °
Adeline, Wednesday, 28 October
Rain. High 60°, low 58°.
Pressure29.94 inHg
Wind16.4 mph S
Humidity94%
Visibility—
Dew point56°
Thu, 2963° / 56°0.09
63 °
Adeline, Thursday, 29 October
Light rain. High 63°, low 56°.
Pressure29.91 inHg
Wind11.9 mph S
Humidity95%
Visibility—
Dew point59°
Fri, 3072° / 59°0.28
72 °
Adeline, Friday, 30 October
Rain. High 72°, low 59°.
Pressure29.68 inHg
Wind24.1 mph W
Humidity88%
Visibility—
Dew point62°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3154° / 41°0.11
54 °
Adeline, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.11 in
Chance of precipitation37%
Record high71° (1974)
Record low24° (2019)
Sun, 0153° / 40°0.2
53 °
Adeline, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.2 in
Chance of precipitation38%
Record high74° (2000)
Record low20° (2019)
Mon, 0252° / 39°0.13
52 °
Adeline, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.13 in
Chance of precipitation32%
Record high73° (1961)
Record low20° (1991)
Tue, 0352° / 38°0.06
52 °
Adeline, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation27%
Record high71° (1964)
Record low15° (1991)
Wed, 0451° / 39°0.09
51 °
Adeline, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.09 in
Chance of precipitation28%
Record high70° (2015)
Record low13° (1991)
Thu, 0551° / 37°0.1
51 °
Adeline, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.1 in
Chance of precipitation22%
Record high70° (1978)
Record low18° (1991)
Fri, 0651° / 36°0.08
51 °
Adeline, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.08 in
Chance of precipitation35%
Record high69° (2020)
Record low20° (1991)
Sat, 0750° / 36°0.03
50 °
Adeline, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.03 in
Chance of precipitation18%
Record high68° (2020)
Record low10° (1991)
Sun, 0850° / 36°0.05
50 °
Adeline, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.05 in
Chance of precipitation15%
Record high71° (2020)
Record low13° (1991)
Mon, 0949° / 36°0.12
49 °
Adeline, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.12 in
Chance of precipitation35%
Record high73° (2020)
Record low17° (1991)
Tue, 1048° / 35°0.09
48 °
Adeline, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation30%
Record high71° (2022)
Record low15° (2017)
Wed, 1146° / 32°0.07
46 °
Adeline, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.07 in
Chance of precipitation27%
Record high69° (1964)
Record low12° (2019)
Thu, 1245° / 31°0.06
45 °
Adeline, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.06 in
Chance of precipitation28%
Record high64° (1964)
Record low2° (2019)
Fri, 1345° / 31°0.04
45 °
Adeline, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.04 in
Chance of precipitation17%
Record high69° (1999)
Record low7° (1986)
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 Adeline, 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 Adeline, 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.