Monthly outlook for North Chicago, IL: average high 56.8°, average low 42.7°. That is 1.2° above the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 25 October (67.4°), the coolest 29 October (31.3°).
56.8°/42.7°
Average high / low
+1.2°
Above normal
4 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
61°
55.8°
+2.9°
29 October – 7 November
50°
52°
-1.1°
8 November – 17 November
at normal
46.7°
—
October records over 66 years
84.7°1 October 2019All-time high
28.6°31 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Park City (3 mi).
Tue, 2067° / 45°0
67 °
North Chicago, Tuesday, 20 October
Clear. High 67°, low 45°.
Pressure30.39 inHg
Wind3.9 mph SE
Humidity62%
Visibility6.2 mi
Dew point49°
Wed, 2167° / 46°0
67 °
North Chicago, Wednesday, 21 October
Clear. High 67°, low 46°.
Pressure30.27 inHg
Wind3.5 mph W
Humidity52%
Visibility6.2 mi
Dew point47°
Thu, 2266° / 49°0.04
66 °
North Chicago, Thursday, 22 October
Light rain. High 66°, low 49°.
Pressure30.33 inHg
Wind7 mph NE
Humidity66%
Visibility6.2 mi
Dew point54°
Fri, 2360° / 49°0
60 °
North Chicago, Friday, 23 October
Clear. High 60°, low 49°.
Pressure30.39 inHg
Wind6.9 mph SE
Humidity68%
Visibility6.2 mi
Dew point48°
Sat, 2461° / 47°0
61 °
North Chicago, Saturday, 24 October
Overcast. High 61°, low 47°.
Pressure30.42 inHg
Wind7.3 mph S
Humidity58%
Visibility—
Dew point43°
Sun, 2567° / 53°0
67 °
North Chicago, Sunday, 25 October
Overcast. High 67°, low 53°.
Pressure30.24 inHg
Wind10.4 mph SW
Humidity58%
Visibility—
Dew point51°
Mon, 2660° / 50°0.08
60 °
North Chicago, Monday, 26 October
Light rain. High 60°, low 50°.
Pressure30.27 inHg
Wind9.1 mph SE
Humidity43%
Visibility—
Dew point36°
Tue, 2758° / 39°0.36
58 °
North Chicago, Tuesday, 27 October
Light rain. High 58°, low 39°.
Pressure29.91 inHg
Wind16.6 mph NW
Humidity89%
Visibility—
Dew point52°
Wed, 2840° / 31°0.04
40 °
North Chicago, Wednesday, 28 October
Light snow. High 40°, low 31°.
Pressure30.27 inHg
Wind15.6 mph NW
Humidity41%
Visibility—
Dew point16°
Thu, 2949° / 31°0
49 °
North Chicago, Thursday, 29 October
Clear. High 49°, low 31°.
Pressure30.18 inHg
Wind11.9 mph W
Humidity30%
Visibility—
Dew point15°
Fri, 3052° / 40°0
52 °
North Chicago, Friday, 30 October
Overcast. High 52°, low 40°.
Pressure29.94 inHg
Wind11.5 mph SW
Humidity40%
Visibility—
Dew point24°
Sat, 3154° / 42°0
54 °
North Chicago, Saturday, 31 October
Partly cloudy. High 54°, low 42°.
Pressure30.09 inHg
Wind6.4 mph S
Humidity45%
Visibility—
Dew point32°
Sun, 0151° / 42°0.37
51 °
North Chicago, Sunday, 1 November
Rain. High 51°, low 42°.
Pressure29.91 inHg
Wind16.4 mph NW
Humidity89%
Visibility—
Dew point45°
Mon, 0245° / 38°0.06
45 °
North Chicago, Monday, 2 November
Light rain. High 45°, low 38°.
Pressure30.15 inHg
Wind19.6 mph NW
Humidity67%
Visibility—
Dew point32°
Tue, 0349° / 40°0
49 °
North Chicago, Tuesday, 3 November
Overcast. High 49°, low 40°.
Pressure30.00 inHg
Wind11.2 mph NW
Humidity62%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0451° / 43°0.1
51 °
North Chicago, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.1 in
Chance of precipitation32%
Record high69° (2022)
Record low17° (1991)
Thu, 0551° / 42°0.11
51 °
North Chicago, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.11 in
Chance of precipitation28%
Record high69° (1978)
Record low22° (1991)
Fri, 0651° / 40°0.08
51 °
North Chicago, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.08 in
Chance of precipitation28%
Record high70° (2020)
Record low23° (1991)
Sat, 0750° / 40°0.05
50 °
North Chicago, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.05 in
Chance of precipitation17%
Record high68° (2020)
Record low19° (1991)
Sun, 0849° / 40°0.06
49 °
North Chicago, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.06 in
Chance of precipitation17%
Record high70° (2020)
Record low18° (2019)
Mon, 0950° / 40°0.12
50 °
North Chicago, 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° (1991)
Tue, 1048° / 39°0.11
48 °
North Chicago, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low39°
Average precipitation0.11 in
Chance of precipitation38%
Record high72° (2022)
Record low18° (2017)
Wed, 1146° / 37°0.08
46 °
North Chicago, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.08 in
Chance of precipitation33%
Record high65° (1964)
Record low16° (2019)
Thu, 1245° / 36°0.06
45 °
North Chicago, 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)
Fri, 1345° / 36°0.05
45 °
North Chicago, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.05 in
Chance of precipitation23%
Record high65° (1999)
Record low10° (2019)
Sat, 1446° / 36°0.07
46 °
North Chicago, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.07 in
Chance of precipitation27%
Record high64° (1971)
Record low17° (1986)
Sun, 1546° / 37°0.09
46 °
North Chicago, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.09 in
Chance of precipitation28%
Record high69° (2025)
Record low21° (2019)
Mon, 1646° / 36°0.05
46 °
North Chicago, Monday, 16 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.05 in
Chance of precipitation18%
Record high61° (2023)
Record low23° (1997)
Tue, 1746° / 37°0.09
46 °
North Chicago, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.09 in
Chance of precipitation27%
Record high64° (2016)
Record low17° (2014)
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 North Chicago, 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 North Chicago, 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.