Monthly outlook for Glencoe, IL: average high 62.3°, average low 50.8°. That is 3.2° above the climate normal for October. Precipitation is expected on 4 days (about 0.7 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 24 October (73.3°), the coolest 17 October (40.6°).
62.3°/50.8°
Average high / low
+3.2°
Above normal
4 / 5
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
62.9°
57.7°
+2.9°
24 October – 2 November
61.2°
53.9°
+4°
3 November – 12 November
at normal
49.3°
—
October records over 66 years
87.4°3 October 2025All-time high
27.5°31 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Highwood (6 mi).
Thu, 1565° / 59°0.21
65 °
Glencoe, Thursday, 15 October
Light rain. High 65°, low 59°.
Pressure30.03 inHg
Wind8 mph SE
Humidity91%
Visibility6.2 mi
Dew point57°
Fri, 1659° / 46°0.06
59 °
Glencoe, Friday, 16 October
Light rain. High 59°, low 46°.
Pressure30.00 inHg
Wind13.6 mph NW
Humidity68%
Visibility6.2 mi
Dew point46°
Sat, 1755° / 41°0
55 °
Glencoe, Saturday, 17 October
Clear. High 55°, low 41°.
Pressure30.53 inHg
Wind2.3 mph NW
Humidity56%
Visibility6.2 mi
Dew point37°
Sun, 1860° / 43°0
60 °
Glencoe, Sunday, 18 October
Clear. High 60°, low 43°.
Pressure30.47 inHg
Wind10.2 mph SW
Humidity60%
Visibility6.2 mi
Dew point41°
Mon, 1962° / 43°0
62 °
Glencoe, Monday, 19 October
Clear. High 62°, low 43°.
Pressure30.42 inHg
Wind7.2 mph SW
Humidity49%
Visibility—
Dew point40°
Tue, 2065° / 47°0
65 °
Glencoe, Tuesday, 20 October
Mostly clear. High 65°, low 47°.
Pressure30.33 inHg
Wind7.6 mph E
Humidity45%
Visibility—
Dew point40°
Wed, 2170° / 57°0
70 °
Glencoe, Wednesday, 21 October
Clear. High 70°, low 57°.
Pressure30.24 inHg
Wind10.9 mph S
Humidity53%
Visibility—
Dew point49°
Thu, 2266° / 64°0.29
66 °
Glencoe, Thursday, 22 October
Light rain. High 66°, low 64°.
Pressure29.94 inHg
Wind14.4 mph SW
Humidity83%
Visibility—
Dew point59°
Fri, 2362° / 59°0.02
62 °
Glencoe, Friday, 23 October
Light rain. High 62°, low 59°.
Pressure30.09 inHg
Wind10 mph N
Humidity85%
Visibility—
Dew point57°
Sat, 2473° / 53°0.07
73 °
Glencoe, Saturday, 24 October
Light rain. High 73°, low 53°.
Pressure29.85 inHg
Wind16.5 mph SW
Humidity56%
Visibility—
Dew point55°
Sun, 2557° / 47°0
57 °
Glencoe, Sunday, 25 October
Clear. High 57°, low 47°.
Pressure30.30 inHg
Wind13.1 mph NW
Humidity36%
Visibility—
Dew point29°
Mon, 2654° / 45°0
54 °
Glencoe, Monday, 26 October
Clear. High 54°, low 45°.
Pressure30.36 inHg
Wind10.7 mph NW
Humidity34%
Visibility—
Dew point24°
Tue, 2759° / 47°0
59 °
Glencoe, Tuesday, 27 October
Overcast. High 59°, low 47°.
Pressure30.24 inHg
Wind13.9 mph SW
Humidity33%
Visibility—
Dew point27°
Wed, 2862° / 51°0
62 °
Glencoe, Wednesday, 28 October
Overcast. High 62°, low 51°.
Pressure30.03 inHg
Wind10.5 mph SW
Humidity30%
Visibility—
Dew point28°
Thu, 2962° / 52°0
62 °
Glencoe, Thursday, 29 October
Partly cloudy. High 62°, low 52°.
Pressure30.00 inHg
Wind10.9 mph W
Humidity61%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3055° / 46°0.1
55 °
Glencoe, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.1 in
Chance of precipitation30%
Record high76° (2024)
Record low30° (2020)
Sat, 3154° / 45°0.13
54 °
Glencoe, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.13 in
Chance of precipitation42%
Record high71° (2024)
Record low28° (2019)
Sun, 0153° / 44°0.17
53 °
Glencoe, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.17 in
Chance of precipitation42%
Record high67° (2016)
Record low20° (2019)
Mon, 0252° / 43°0.13
52 °
Glencoe, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.13 in
Chance of precipitation38%
Record high68° (1961)
Record low25° (1991)
Tue, 0351° / 42°0.06
51 °
Glencoe, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.06 in
Chance of precipitation23%
Record high70° (2022)
Record low20° (1991)
Wed, 0451° / 43°0.09
51 °
Glencoe, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.09 in
Chance of precipitation28%
Record high69° (2022)
Record low18° (1991)
Thu, 0551° / 42°0.12
51 °
Glencoe, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.12 in
Chance of precipitation28%
Record high68° (2022)
Record low22° (1991)
Fri, 0651° / 40°0.09
51 °
Glencoe, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.09 in
Chance of precipitation28%
Record high70° (2020)
Record low25° (1991)
Sat, 0750° / 41°0.05
50 °
Glencoe, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.05 in
Chance of precipitation18%
Record high68° (2020)
Record low21° (1991)
Sun, 0849° / 41°0.06
49 °
Glencoe, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low41°
Average precipitation0.06 in
Chance of precipitation17%
Record high72° (2020)
Record low18° (2019)
Mon, 0950° / 40°0.12
50 °
Glencoe, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.12 in
Chance of precipitation38%
Record high72° (2020)
Record low23° (2018)
Tue, 1049° / 40°0.11
49 °
Glencoe, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.11 in
Chance of precipitation37%
Record high72° (2022)
Record low18° (2017)
Wed, 1147° / 38°0.08
47 °
Glencoe, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.08 in
Chance of precipitation33%
Record high64° (1964)
Record low16° (2019)
Thu, 1245° / 36°0.06
45 °
Glencoe, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.06 in
Chance of precipitation20%
Record high63° (1964)
Record low7° (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 Glencoe, 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 Glencoe, 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.