Monthly outlook for Olympia Fields, IL: average high 62.7°, average low 50.7°. That is 1.8° above the climate normal for October. Precipitation is expected on 6 days (about 2.3 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 13 October (81.4°), the coolest 17 October (39.6°).
62.7°/50.7°
Average high / low
+1.8°
Above normal
6 / 5
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
65.6°
60.7°
+2.8°
23 October – 1 November
57.9°
57.1°
+0.4°
2 November – 11 November
at normal
52.3°
—
October records over 66 years
87.3°7 October 2007All-time high
22.5°24 October 1981All-time low
Climate normals and records are computed from the nearest reference point — Arbury Hills (8 mi).
Wed, 1474° / 58°0.15
74 °
Olympia Fields, Wednesday, 14 October
Rain. High 74°, low 58°.
Pressure30.06 inHg
Wind7.9 mph NE
Humidity68%
Visibility6.2 mi
Dew point59°
Thu, 1559° / 56°1.44
59 °
Olympia Fields, Thursday, 15 October
Heavy rain. High 59°, low 56°.
Pressure30.06 inHg
Wind6.4 mph NE
Humidity97%
Visibility1.2 mi
Dew point58°
Fri, 1657° / 48°0.01
57 °
Olympia Fields, Friday, 16 October
Light rain. High 57°, low 48°.
Pressure30.18 inHg
Wind18.6 mph NW
Humidity58%
Visibility6.2 mi
Dew point38°
Sat, 1757° / 40°0
57 °
Olympia Fields, Saturday, 17 October
Clear. High 57°, low 40°.
Pressure30.47 inHg
Wind9.4 mph SW
Humidity43%
Visibility—
Dew point31°
Sun, 1862° / 46°0
62 °
Olympia Fields, Sunday, 18 October
Partly cloudy. High 62°, low 46°.
Pressure30.27 inHg
Wind12.8 mph SW
Humidity42%
Visibility—
Dew point35°
Mon, 1961° / 48°0.06
61 °
Olympia Fields, Monday, 19 October
Light rain. High 61°, low 48°.
Pressure30.24 inHg
Wind7.9 mph S
Humidity52%
Visibility—
Dew point40°
Tue, 2059° / 55°0.4
59 °
Olympia Fields, Tuesday, 20 October
Rain. High 59°, low 55°.
Pressure30.21 inHg
Wind10.1 mph SE
Humidity91%
Visibility—
Dew point56°
Wed, 2170° / 58°0.01
70 °
Olympia Fields, Wednesday, 21 October
Light rain. High 70°, low 58°.
Pressure30.21 inHg
Wind10 mph S
Humidity68%
Visibility—
Dew point56°
Thu, 2275° / 59°0
75 °
Olympia Fields, Thursday, 22 October
Overcast. High 75°, low 59°.
Pressure30.06 inHg
Wind18.9 mph S
Humidity54%
Visibility—
Dew point54°
Fri, 2369° / 53°0.16
69 °
Olympia Fields, Friday, 23 October
Light rain. High 69°, low 53°.
Pressure30.00 inHg
Wind22.4 mph S
Humidity55%
Visibility—
Dew point47°
Sat, 2460° / 49°0
60 °
Olympia Fields, Saturday, 24 October
Partly cloudy. High 60°, low 49°.
Pressure30.30 inHg
Wind12.3 mph NW
Humidity33%
Visibility—
Dew point29°
Sun, 2554° / 45°0
54 °
Olympia Fields, Sunday, 25 October
Mostly clear. High 54°, low 45°.
Pressure30.27 inHg
Wind9.9 mph NW
Humidity38%
Visibility—
Dew point28°
Mon, 2657° / 44°0
57 °
Olympia Fields, Monday, 26 October
Light rain. High 57°, low 44°.
Pressure30.06 inHg
Wind8.8 mph W
Humidity47%
Visibility—
Dew point34°
Tue, 2758° / 45°0.06
58 °
Olympia Fields, Tuesday, 27 October
Light rain. High 58°, low 45°.
Pressure29.56 inHg
Wind16.6 mph NW
Humidity56%
Visibility—
Dew point41°
Wed, 2849° / 43°0
49 °
Olympia Fields, Wednesday, 28 October
Overcast. High 49°, low 43°.
Pressure29.80 inHg
Wind14.6 mph NW
Humidity48%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2956° / 42°0.06
56 °
Olympia Fields, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.06 in
Chance of precipitation20%
Record high78° (2024)
Record low26° (1980)
Fri, 3058° / 43°0.11
58 °
Olympia Fields, Friday, 30 October
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.11 in
Chance of precipitation30%
Record high77° (1971)
Record low25° (1980)
Sat, 3157° / 44°0.15
57 °
Olympia Fields, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high57°
Average low44°
Average precipitation0.15 in
Chance of precipitation38%
Record high75° (1974)
Record low27° (2023)
Sun, 0155° / 42°0.17
55 °
Olympia Fields, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.17 in
Chance of precipitation42%
Record high75° (2016)
Record low23° (2019)
Mon, 0255° / 41°0.12
55 °
Olympia Fields, Monday, 2 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.12 in
Chance of precipitation40%
Record high75° (1961)
Record low24° (1991)
Tue, 0353° / 39°0.07
53 °
Olympia Fields, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.07 in
Chance of precipitation22%
Record high73° (1987)
Record low18° (1991)
Wed, 0453° / 41°0.09
53 °
Olympia Fields, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.09 in
Chance of precipitation28%
Record high72° (2015)
Record low18° (1991)
Thu, 0553° / 40°0.12
53 °
Olympia Fields, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.12 in
Chance of precipitation30%
Record high76° (1978)
Record low18° (1991)
Fri, 0653° / 38°0.08
53 °
Olympia Fields, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.08 in
Chance of precipitation35%
Record high72° (1975)
Record low24° (1973)
Sat, 0752° / 38°0.06
52 °
Olympia Fields, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation20%
Record high69° (2020)
Record low20° (1991)
Sun, 0852° / 38°0.06
52 °
Olympia Fields, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation22%
Record high74° (2020)
Record low13° (1991)
Mon, 0952° / 38°0.14
52 °
Olympia Fields, Monday, 9 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.14 in
Chance of precipitation35%
Record high72° (1999)
Record low17° (1991)
Tue, 1051° / 37°0.14
51 °
Olympia Fields, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.14 in
Chance of precipitation33%
Record high72° (2020)
Record low17° (2018)
Wed, 1148° / 35°0.07
48 °
Olympia Fields, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.07 in
Chance of precipitation32%
Record high71° (1964)
Record low18° (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 Olympia Fields, 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 Olympia Fields, 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.