Monthly outlook for Arlington Heights, OH: average high 70.4°, average low 51.5°. That is 6.1° above the climate normal for October. Precipitation is expected on 4 days (about 1.6 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 30 October (76.4°), the coolest 25 October (42.9°).
70.4°/51.5°
Average high / low
+6.1°
Above normal
4 / 5
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
72.9°
60.9°
+6.6°
3 November – 12 November
66.2°
55.8°
+5.8°
13 November – 22 November
at normal
51.5°
—
October records over 66 years
92.1°2 October 2019All-time high
26.2°26 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Golf Manor (2 mi).
Sun, 2572° / 43°0
72 °
Arlington Heights, Sunday, 25 October
Partly cloudy. High 72°, low 43°.
Pressure30.47 inHg
Wind2.6 mph SE
Humidity56%
Visibility6.2 mi
Dew point48°
Mon, 2675° / 44°0
75 °
Arlington Heights, Monday, 26 October
Overcast. High 75°, low 44°.
Pressure30.36 inHg
Wind1.1 mph SW
Humidity47%
Visibility6.2 mi
Dew point47°
Tue, 2772° / 49°0
72 °
Arlington Heights, Tuesday, 27 October
Overcast. High 72°, low 49°.
Pressure30.30 inHg
Wind2.8 mph SE
Humidity48%
Visibility6.2 mi
Dew point47°
Wed, 2875° / 53°0
75 °
Arlington Heights, Wednesday, 28 October
Clear. High 75°, low 53°.
Pressure30.30 inHg
Wind3 mph S
Humidity53%
Visibility6.2 mi
Dew point48°
Thu, 2975° / 52°0
75 °
Arlington Heights, Thursday, 29 October
Clear. High 75°, low 52°.
Pressure30.21 inHg
Wind8.3 mph SW
Humidity34%
Visibility—
Dew point41°
Fri, 3076° / 53°0
76 °
Arlington Heights, Friday, 30 October
Overcast. High 76°, low 53°.
Pressure30.24 inHg
Wind3.6 mph SW
Humidity36%
Visibility—
Dew point44°
Sat, 3175° / 59°0
75 °
Arlington Heights, Saturday, 31 October
Overcast. High 75°, low 59°.
Pressure30.18 inHg
Wind7.1 mph S
Humidity39%
Visibility—
Dew point46°
Sun, 0167° / 63°0.08
67 °
Arlington Heights, Sunday, 1 November
Light rain. High 67°, low 63°.
Pressure30.06 inHg
Wind12.8 mph SW
Humidity73%
Visibility—
Dew point55°
Mon, 0272° / 61°0.04
72 °
Arlington Heights, Monday, 2 November
Light rain. High 72°, low 61°.
Pressure30.03 inHg
Wind9.6 mph SW
Humidity51%
Visibility—
Dew point51°
Tue, 0361° / 50°0
61 °
Arlington Heights, Tuesday, 3 November
Overcast. High 61°, low 50°.
Pressure30.18 inHg
Wind6.3 mph N
Humidity57%
Visibility—
Dew point44°
Wed, 0466° / 55°1.37
66 °
Arlington Heights, Wednesday, 4 November
Heavy rain. High 66°, low 55°.
Pressure29.65 inHg
Wind15.1 mph S
Humidity88%
Visibility—
Dew point60°
Thu, 0565° / 51°0.02
65 °
Arlington Heights, Thursday, 5 November
Light rain. High 65°, low 51°.
Pressure29.97 inHg
Wind12.5 mph W
Humidity45%
Visibility—
Dew point42°
Fri, 0661° / 43°0
61 °
Arlington Heights, Friday, 6 November
Partly cloudy. High 61°, low 43°.
Pressure30.06 inHg
Wind5.7 mph S
Humidity34%
Visibility—
Dew point29°
Sat, 0775° / 54°0.13
75 °
Arlington Heights, Saturday, 7 November
Light rain. High 75°, low 54°.
Pressure29.68 inHg
Wind13.8 mph SW
Humidity68%
Visibility—
Dew point59°
Sun, 0870° / 52°0
70 °
Arlington Heights, Sunday, 8 November
Overcast. High 70°, low 52°.
Pressure29.85 inHg
Wind12.3 mph W
Humidity34%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0957° / 41°0.11
57 °
Arlington Heights, Monday, 9 November
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.11 in
Chance of precipitation33%
Record high75° (2020)
Record low22° (1991)
Tue, 1056° / 41°0.17
56 °
Arlington Heights, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.17 in
Chance of precipitation35%
Record high76° (2020)
Record low22° (2018)
Wed, 1153° / 39°0.14
53 °
Arlington Heights, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.14 in
Chance of precipitation28%
Record high70° (1964)
Record low23° (2025)
Thu, 1252° / 37°0.11
52 °
Arlington Heights, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.11 in
Chance of precipitation30%
Record high70° (1985)
Record low11° (2019)
Fri, 1352° / 37°0.07
52 °
Arlington Heights, Friday, 13 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.07 in
Chance of precipitation25%
Record high72° (2010)
Record low6° (2019)
Sat, 1452° / 37°0.07
52 °
Arlington Heights, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.07 in
Chance of precipitation23%
Record high73° (2011)
Record low20° (1986)
Sun, 1552° / 38°0.16
52 °
Arlington Heights, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.16 in
Chance of precipitation35%
Record high71° (1964)
Record low22° (1969)
Mon, 1652° / 38°0.09
52 °
Arlington Heights, Monday, 16 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.09 in
Chance of precipitation28%
Record high70° (1987)
Record low26° (1967)
Tue, 1752° / 38°0.13
52 °
Arlington Heights, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.13 in
Chance of precipitation27%
Record high71° (1971)
Record low18° (2014)
Wed, 1853° / 38°0.1
53 °
Arlington Heights, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.1 in
Chance of precipitation27%
Record high74° (2016)
Record low11° (2014)
Thu, 1953° / 38°0.11
53 °
Arlington Heights, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.11 in
Chance of precipitation32%
Record high74° (1985)
Record low4° (2014)
Fri, 2052° / 38°0.09
52 °
Arlington Heights, Friday, 20 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.09 in
Chance of precipitation28%
Record high68° (1985)
Record low15° (1984)
Sat, 2149° / 37°0.1
49 °
Arlington Heights, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.1 in
Chance of precipitation33%
Record high68° (1979)
Record low16° (2014)
Sun, 2250° / 36°0.08
50 °
Arlington Heights, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.08 in
Chance of precipitation27%
Record high70° (2010)
Record low17° (1964)
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 Arlington Heights, OH 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 Arlington Heights, OH 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.