Monthly outlook for Palatine, IL: average high 64.6°, average low 50.1°. That is 4.4° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 1 November (74.7°), the coolest 18 October (40.8°).
64.6°/50.1°
Average high / low
+4.4°
Above normal
1 / 5
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
62.6°
57.8°
+2.7°
28 October – 6 November
67.9°
54°
+7.7°
7 November – 16 November
at normal
48.4°
—
October records over 66 years
88.2°3 October 2025All-time high
26.2°31 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Park Ridge (13 mi).
Mon, 1965° / 45°0
65 °
Palatine, Monday, 19 October
Clear. High 65°, low 45°.
Pressure30.39 inHg
Wind3.9 mph SW
Humidity60%
Visibility6.2 mi
Dew point46°
Tue, 2064° / 44°0
64 °
Palatine, Tuesday, 20 October
Clear. High 64°, low 44°.
Pressure30.39 inHg
Wind4 mph SE
Humidity66%
Visibility6.2 mi
Dew point51°
Wed, 2165° / 46°0
65 °
Palatine, Wednesday, 21 October
Clear. High 65°, low 46°.
Pressure30.30 inHg
Wind4.2 mph SW
Humidity55%
Visibility6.2 mi
Dew point48°
Thu, 2267° / 51°0
67 °
Palatine, Thursday, 22 October
Partly cloudy. High 67°, low 51°.
Pressure30.30 inHg
Wind7.2 mph NE
Humidity61%
Visibility—
Dew point51°
Fri, 2362° / 49°0
62 °
Palatine, Friday, 23 October
Partly cloudy. High 62°, low 49°.
Pressure30.39 inHg
Wind8 mph E
Humidity61%
Visibility—
Dew point47°
Sat, 2470° / 59°0
70 °
Palatine, Saturday, 24 October
Overcast. High 70°, low 59°.
Pressure30.21 inHg
Wind13.5 mph S
Humidity40%
Visibility—
Dew point41°
Sun, 2561° / 45°0
61 °
Palatine, Sunday, 25 October
Overcast. High 61°, low 45°.
Pressure30.42 inHg
Wind12.1 mph NW
Humidity30%
Visibility—
Dew point23°
Mon, 2655° / 41°0
55 °
Palatine, Monday, 26 October
Overcast. High 55°, low 41°.
Pressure30.36 inHg
Wind8.8 mph SW
Humidity28%
Visibility—
Dew point21°
Tue, 2753° / 49°0.08
53 °
Palatine, Tuesday, 27 October
Light rain. High 53°, low 49°.
Pressure30.18 inHg
Wind8.6 mph SW
Humidity92%
Visibility—
Dew point49°
Wed, 2864° / 53°0
64 °
Palatine, Wednesday, 28 October
Overcast. High 64°, low 53°.
Pressure29.94 inHg
Wind10.1 mph SW
Humidity57%
Visibility—
Dew point47°
Thu, 2966° / 56°0
66 °
Palatine, Thursday, 29 October
Overcast. High 66°, low 56°.
Pressure29.77 inHg
Wind8.6 mph SW
Humidity60%
Visibility—
Dew point50°
Fri, 3069° / 53°0.01
69 °
Palatine, Friday, 30 October
Light rain. High 69°, low 53°.
Pressure29.77 inHg
Wind13.6 mph SW
Humidity60%
Visibility—
Dew point51°
Sat, 3172° / 58°0.04
72 °
Palatine, Saturday, 31 October
Light rain. High 72°, low 58°.
Pressure29.71 inHg
Wind13.4 mph SW
Humidity68%
Visibility—
Dew point57°
Sun, 0175° / 62°0
75 °
Palatine, Sunday, 1 November
Overcast. High 75°, low 62°.
Pressure29.88 inHg
Wind12.9 mph SW
Humidity60%
Visibility—
Dew point57°
Mon, 0261° / 51°0
61 °
Palatine, Monday, 2 November
Clear. High 61°, low 51°.
Pressure30.27 inHg
Wind12.1 mph NE
Humidity45%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0353° / 41°0.06
53 °
Palatine, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.06 in
Chance of precipitation22%
Record high71° (1987)
Record low18° (1991)
Wed, 0452° / 42°0.09
52 °
Palatine, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.09 in
Chance of precipitation27%
Record high70° (2022)
Record low17° (1991)
Thu, 0553° / 41°0.13
53 °
Palatine, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.13 in
Chance of precipitation33%
Record high73° (1978)
Record low20° (1991)
Fri, 0652° / 39°0.07
52 °
Palatine, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.07 in
Chance of precipitation30%
Record high71° (1975)
Record low24° (1991)
Sat, 0751° / 39°0.05
51 °
Palatine, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.05 in
Chance of precipitation22%
Record high69° (2020)
Record low20° (1991)
Sun, 0851° / 39°0.05
51 °
Palatine, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.05 in
Chance of precipitation18%
Record high74° (2020)
Record low17° (1991)
Mon, 0951° / 39°0.12
51 °
Palatine, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.12 in
Chance of precipitation38%
Record high72° (2020)
Record low21° (1991)
Tue, 1050° / 39°0.11
50 °
Palatine, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.11 in
Chance of precipitation33%
Record high73° (2020)
Record low18° (2017)
Wed, 1148° / 36°0.08
48 °
Palatine, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.08 in
Chance of precipitation32%
Record high69° (1964)
Record low15° (2019)
Thu, 1246° / 35°0.06
46 °
Palatine, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.06 in
Chance of precipitation23%
Record high66° (1964)
Record low3° (2019)
Fri, 1346° / 35°0.05
46 °
Palatine, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.05 in
Chance of precipitation18%
Record high68° (1999)
Record low1° (2019)
Sat, 1447° / 35°0.07
47 °
Palatine, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.07 in
Chance of precipitation33%
Record high68° (1971)
Record low15° (1986)
Sun, 1547° / 36°0.09
47 °
Palatine, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.09 in
Chance of precipitation28%
Record high69° (2025)
Record low19° (2019)
Mon, 1647° / 35°0.05
47 °
Palatine, Monday, 16 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.05 in
Chance of precipitation23%
Record high62° (2023)
Record low22° (1997)
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 Palatine, 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 Palatine, 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.