Monthly outlook for Evanston, IL: average high 64°, average low 53.3°. That is 2.6° above the climate normal for October. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 12 October (80.5°), the coolest 18 October (40.2°).
64°/53.3°
Average high / low
+2.6°
Above normal
5 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
65.9°
60.5°
+3°
19 October – 28 October
60.8°
56.4°
+2.4°
29 October – 7 November
at normal
52.7°
—
October records over 66 years
87.3°3 October 2025All-time high
28°31 October 2023All-time low
Sat, 1077° / 60°0
77 °
Evanston, Saturday, 10 October
Overcast. High 77°, low 60°.
Pressure30.09 inHg
Wind8.5 mph S
Humidity58%
Visibility6.2 mi
Dew point56°
Sun, 1171° / 59°0
71 °
Evanston, Sunday, 11 October
Clear. High 71°, low 59°.
Pressure29.94 inHg
Wind3.7 mph SE
Humidity74%
Visibility6.2 mi
Dew point58°
Mon, 1281° / 62°0
81 °
Evanston, Monday, 12 October
Overcast. High 81°, low 62°.
Pressure29.83 inHg
Wind10.3 mph SW
Humidity62%
Visibility6.2 mi
Dew point63°
Tue, 1375° / 61°0.01
75 °
Evanston, Tuesday, 13 October
Light rain. High 75°, low 61°.
Pressure29.83 inHg
Wind5.8 mph NW
Humidity81%
Visibility6.2 mi
Dew point66°
Wed, 1462° / 59°0.05
62 °
Evanston, Wednesday, 14 October
Light rain. High 62°, low 59°.
Pressure30.12 inHg
Wind9.4 mph NE
Humidity73%
Visibility—
Dew point53°
Thu, 1561° / 57°0.04
61 °
Evanston, Thursday, 15 October
Light rain. High 61°, low 57°.
Pressure30.33 inHg
Wind12.1 mph E
Humidity66%
Visibility—
Dew point47°
Fri, 1664° / 48°0.03
64 °
Evanston, Friday, 16 October
Light rain. High 64°, low 48°.
Pressure29.77 inHg
Wind23.5 mph W
Humidity58%
Visibility—
Dew point46°
Sat, 1747° / 41°0.05
47 °
Evanston, Saturday, 17 October
Light rain. High 47°, low 41°.
Pressure30.27 inHg
Wind20.8 mph W
Humidity47%
Visibility—
Dew point26°
Sun, 1852° / 40°0
52 °
Evanston, Sunday, 18 October
Mostly clear. High 52°, low 40°.
Pressure30.42 inHg
Wind13 mph SW
Humidity35%
Visibility—
Dew point22°
Mon, 1960° / 45°0
60 °
Evanston, Monday, 19 October
Clear. High 60°, low 45°.
Pressure30.36 inHg
Wind9.7 mph SW
Humidity32%
Visibility—
Dew point26°
Tue, 2063° / 52°0
63 °
Evanston, Tuesday, 20 October
Light rain. High 63°, low 52°.
Pressure30.27 inHg
Wind12.4 mph SE
Humidity35%
Visibility—
Dew point32°
Wed, 2165° / 54°0.13
65 °
Evanston, Wednesday, 21 October
Rain. High 65°, low 54°.
Pressure30.06 inHg
Wind14 mph S
Humidity49%
Visibility—
Dew point44°
Thu, 2260° / 56°0.73
60 °
Evanston, Thursday, 22 October
Rain. High 60°, low 56°.
Pressure29.68 inHg
Wind15.2 mph SE
Humidity88%
Visibility—
Dew point56°
Fri, 2359° / 56°0.01
59 °
Evanston, Friday, 23 October
Light rain. High 59°, low 56°.
Pressure29.94 inHg
Wind10.2 mph N
Humidity82%
Visibility—
Dew point53°
Sat, 2458° / 50°0
58 °
Evanston, Saturday, 24 October
Overcast. High 58°, low 50°.
Pressure29.88 inHg
Wind15.2 mph W
Humidity58%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2556° / 46°0.12
56 °
Evanston, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high56°
Average low46°
Average precipitation0.12 in
Chance of precipitation33%
Record high72° (1963)
Record low33° (1962)
Mon, 2655° / 46°0.11
55 °
Evanston, Monday, 26 October
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.11 in
Chance of precipitation28%
Record high76° (1963)
Record low29° (1962)
Tue, 2755° / 45°0.1
55 °
Evanston, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.1 in
Chance of precipitation33%
Record high70° (2023)
Record low34° (1980)
Wed, 2854° / 45°0.05
54 °
Evanston, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.05 in
Chance of precipitation20%
Record high69° (1999)
Record low31° (2020)
Thu, 2954° / 45°0.06
54 °
Evanston, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.06 in
Chance of precipitation22%
Record high79° (2024)
Record low31° (1988)
Fri, 3055° / 46°0.11
55 °
Evanston, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.11 in
Chance of precipitation30%
Record high77° (2024)
Record low32° (1988)
Sat, 3155° / 45°0.14
55 °
Evanston, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.14 in
Chance of precipitation40%
Record high72° (2024)
Record low28° (2023)
Sun, 0154° / 44°0.16
54 °
Evanston, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.16 in
Chance of precipitation45%
Record high69° (2016)
Record low21° (2019)
Mon, 0253° / 43°0.13
53 °
Evanston, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low43°
Average precipitation0.13 in
Chance of precipitation40%
Record high69° (1961)
Record low26° (1991)
Tue, 0352° / 42°0.06
52 °
Evanston, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.06 in
Chance of precipitation20%
Record high70° (2022)
Record low20° (1991)
Wed, 0452° / 43°0.09
52 °
Evanston, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.09 in
Chance of precipitation28%
Record high69° (2022)
Record low18° (1991)
Thu, 0552° / 42°0.12
52 °
Evanston, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.12 in
Chance of precipitation33%
Record high69° (1978)
Record low22° (1991)
Fri, 0651° / 40°0.07
51 °
Evanston, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.07 in
Chance of precipitation30%
Record high70° (2020)
Record low25° (1991)
Sat, 0750° / 41°0.06
50 °
Evanston, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.06 in
Chance of precipitation22%
Record high69° (2020)
Record low23° (1991)
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 Evanston, 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 Evanston, 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.