Monthly outlook for Medinah, IL: average high 60.9°, average low 48.6°. That is 2.9° above the climate normal for October. Precipitation is expected on 7 days (about 1.7 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 22 October (72.6°), the coolest 30 October (38°).
60.9°/48.6°
Average high / low
+2.9°
Above normal
7 / 5
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
62.8°
57°
+3.3°
31 October – 9 November
57.6°
52.5°
+2.8°
10 November – 19 November
at normal
47.1°
—
October records over 66 years
87.4°3 October 2025All-time high
22.5°24 October 1981All-time low
Climate normals and records are computed from the nearest reference point — Glendale Heights (4 mi).
Thu, 2273° / 45°0
73 °
Medinah, Thursday, 22 October
Clear. High 73°, low 45°.
Pressure30.27 inHg
Wind2.2 mph NE
Humidity64%
Visibility6.2 mi
Dew point55°
Fri, 2367° / 51°0
67 °
Medinah, Friday, 23 October
Partly cloudy. High 67°, low 51°.
Pressure30.33 inHg
Wind2.1 mph SE
Humidity81%
Visibility0.4 mi
Dew point56°
Sat, 2467° / 50°0
67 °
Medinah, Saturday, 24 October
Overcast. High 67°, low 50°.
Pressure30.39 inHg
Wind6.4 mph S
Humidity66%
Visibility6.2 mi
Dew point52°
Sun, 2569° / 51°0
69 °
Medinah, Sunday, 25 October
Overcast. High 69°, low 51°.
Pressure30.36 inHg
Wind6.4 mph S
Humidity60%
Visibility—
Dew point51°
Mon, 2667° / 52°0
67 °
Medinah, Monday, 26 October
Overcast. High 67°, low 52°.
Pressure30.24 inHg
Wind9.6 mph NE
Humidity65%
Visibility—
Dew point53°
Tue, 2753° / 51°0.06
53 °
Medinah, Tuesday, 27 October
Light rain. High 53°, low 51°.
Pressure30.24 inHg
Wind8.8 mph NE
Humidity81%
Visibility—
Dew point47°
Wed, 2859° / 51°0.14
59 °
Medinah, Wednesday, 28 October
Rain. High 59°, low 51°.
Pressure30.12 inHg
Wind9.6 mph S
Humidity70%
Visibility—
Dew point48°
Thu, 2953° / 42°0.1
53 °
Medinah, Thursday, 29 October
Light rain. High 53°, low 42°.
Pressure30.18 inHg
Wind16.4 mph W
Humidity61%
Visibility—
Dew point31°
Fri, 3050° / 38°0
50 °
Medinah, Friday, 30 October
Clear. High 50°, low 38°.
Pressure30.30 inHg
Wind7.4 mph NW
Humidity42%
Visibility—
Dew point26°
Sat, 3150° / 40°0
50 °
Medinah, Saturday, 31 October
Overcast. High 50°, low 40°.
Pressure30.30 inHg
Wind9.5 mph SE
Humidity32%
Visibility—
Dew point19°
Sun, 0151° / 45°0.42
51 °
Medinah, Sunday, 1 November
Rain. High 51°, low 45°.
Pressure30.00 inHg
Wind11 mph S
Humidity96%
Visibility—
Dew point49°
Mon, 0253° / 51°0.19
53 °
Medinah, Monday, 2 November
Light rain. High 53°, low 51°.
Pressure29.97 inHg
Wind4.3 mph N
Humidity96%
Visibility—
Dew point52°
Tue, 0359° / 52°0
59 °
Medinah, Tuesday, 3 November
Overcast. High 59°, low 52°.
Pressure30.00 inHg
Wind7 mph E
Humidity83%
Visibility—
Dew point51°
Wed, 0464° / 53°0.67
64 °
Medinah, Wednesday, 4 November
Heavy rain. High 64°, low 53°.
Pressure29.83 inHg
Wind16.3 mph S
Humidity81%
Visibility—
Dew point55°
Thu, 0569° / 62°0.14
69 °
Medinah, Thursday, 5 November
Light rain. High 69°, low 62°.
Pressure29.85 inHg
Wind14.8 mph SW
Humidity66%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0652° / 37°0.07
52 °
Medinah, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.07 in
Chance of precipitation30%
Record high72° (1975)
Record low23° (1991)
Sat, 0751° / 37°0.05
51 °
Medinah, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.05 in
Chance of precipitation17%
Record high68° (2020)
Record low16° (1991)
Sun, 0851° / 37°0.04
51 °
Medinah, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.04 in
Chance of precipitation18%
Record high73° (2020)
Record low13° (1991)
Mon, 0951° / 38°0.11
51 °
Medinah, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.11 in
Chance of precipitation35%
Record high72° (1999)
Record low17° (1991)
Tue, 1050° / 37°0.1
50 °
Medinah, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.1 in
Chance of precipitation32%
Record high72° (2020)
Record low17° (2017)
Wed, 1147° / 34°0.07
47 °
Medinah, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.07 in
Chance of precipitation28%
Record high70° (1964)
Record low15° (2019)
Thu, 1246° / 33°0.06
46 °
Medinah, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.06 in
Chance of precipitation22%
Record high66° (1964)
Record low2° (2019)
Fri, 1346° / 33°0.04
46 °
Medinah, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.04 in
Chance of precipitation17%
Record high69° (1999)
Record low3° (2019)
Sat, 1447° / 33°0.07
47 °
Medinah, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.07 in
Chance of precipitation30%
Record high69° (1971)
Record low13° (1986)
Sun, 1547° / 34°0.09
47 °
Medinah, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.09 in
Chance of precipitation28%
Record high69° (2025)
Record low19° (1982)
Mon, 1647° / 33°0.05
47 °
Medinah, Monday, 16 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.05 in
Chance of precipitation18%
Record high63° (1988)
Record low20° (1997)
Tue, 1747° / 34°0.08
47 °
Medinah, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.08 in
Chance of precipitation30%
Record high70° (2016)
Record low15° (2014)
Wed, 1847° / 35°0.11
47 °
Medinah, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.11 in
Chance of precipitation28%
Record high67° (1999)
Record low11° (2014)
Thu, 1947° / 34°0.07
47 °
Medinah, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.07 in
Chance of precipitation30%
Record high65° (1983)
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 Medinah, 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 Medinah, 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.