Monthly outlook for Bannockburn, IL: average high 54.4°, average low 43.4°. That is 4° above the climate normal for November. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 15 November (63.7°), the coolest 12 November (35.3°).
54.4°/43.4°
Average high / low
+4°
Above normal
3 / 4
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
5 November – 14 November
53.4°
48.2°
+2.9°
15 November – 24 November
56°
44.6°
+6.3°
25 November – 4 December
at normal
40.1°
—
November records over 66 years
72.3°9 November 2020All-time high
6.6°12 November 2019All-time low
Climate normals and records are computed from the nearest reference point — Highwood (3 mi).
Fri, 0649° / 39°0
49 °
Bannockburn, Friday, 6 November
Overcast. High 49°, low 39°.
Pressure30.15 inHg
Wind8.6 mph N
Humidity53%
Visibility6.2 mi
Dew point32°
Sat, 0749° / 35°0
49 °
Bannockburn, Saturday, 7 November
Partly cloudy. High 49°, low 35°.
Pressure30.21 inHg
Wind5.4 mph W
Humidity55%
Visibility6.2 mi
Dew point32°
Sun, 0858° / 40°0
58 °
Bannockburn, Sunday, 8 November
Clear. High 58°, low 40°.
Pressure30.03 inHg
Wind10.3 mph W
Humidity61%
Visibility6.2 mi
Dew point44°
Mon, 0957° / 38°0
57 °
Bannockburn, Monday, 9 November
Partly cloudy. High 57°, low 38°.
Pressure30.15 inHg
Wind10.6 mph SW
Humidity54%
Visibility—
Dew point37°
Tue, 1060° / 47°0
60 °
Bannockburn, Tuesday, 10 November
Clear. High 60°, low 47°.
Pressure30.03 inHg
Wind11 mph SW
Humidity58%
Visibility—
Dew point42°
Wed, 1149° / 41°0
49 °
Bannockburn, Wednesday, 11 November
Partly cloudy. High 49°, low 41°.
Pressure30.18 inHg
Wind8.6 mph NW
Humidity51%
Visibility—
Dew point30°
Thu, 1246° / 35°0
46 °
Bannockburn, Thursday, 12 November
Clear. High 46°, low 35°.
Pressure30.18 inHg
Wind10.8 mph N
Humidity36%
Visibility—
Dew point18°
Fri, 1354° / 37°0
54 °
Bannockburn, Friday, 13 November
Overcast. High 54°, low 37°.
Pressure29.97 inHg
Wind11.9 mph W
Humidity43%
Visibility—
Dew point28°
Sat, 1459° / 45°0
59 °
Bannockburn, Saturday, 14 November
Clear. High 59°, low 45°.
Pressure29.88 inHg
Wind12.5 mph SW
Humidity49%
Visibility—
Dew point37°
Sun, 1564° / 51°0
64 °
Bannockburn, Sunday, 15 November
Clear. High 64°, low 51°.
Pressure29.83 inHg
Wind10.8 mph SW
Humidity68%
Visibility—
Dew point50°
Mon, 1662° / 54°0.05
62 °
Bannockburn, Monday, 16 November
Light rain. High 62°, low 54°.
Pressure29.83 inHg
Wind10.6 mph SW
Humidity54%
Visibility—
Dew point44°
Tue, 1756° / 49°0.1
56 °
Bannockburn, Tuesday, 17 November
Light rain. High 56°, low 49°.
Pressure29.77 inHg
Wind16.3 mph W
Humidity74%
Visibility—
Dew point43°
Wed, 1853° / 47°0
53 °
Bannockburn, Wednesday, 18 November
Overcast. High 53°, low 47°.
Pressure30.15 inHg
Wind6 mph E
Humidity67%
Visibility—
Dew point41°
Thu, 1958° / 51°0.13
58 °
Bannockburn, Thursday, 19 November
Light rain. High 58°, low 51°.
Pressure29.83 inHg
Wind13.2 mph S
Humidity84%
Visibility—
Dew point47°
Fri, 2044° / 40°0
44 °
Bannockburn, Friday, 20 November
Overcast. High 44°, low 40°.
Pressure30.18 inHg
Wind14.9 mph NW
Humidity52%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2143° / 35°0.11
43 °
Bannockburn, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high43°
Average low35°
Average precipitation0.11 in
Chance of precipitation25%
Record high61° (1990)
Record low14° (1964)
Sun, 2243° / 34°0.04
43 °
Bannockburn, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high43°
Average low34°
Average precipitation0.04 in
Chance of precipitation18%
Record high61° (2010)
Record low17° (1964)
Mon, 2344° / 34°0.08
44 °
Bannockburn, Monday, 23 November
Climate normal for this date — 60-year average.
Average high44°
Average low34°
Average precipitation0.08 in
Chance of precipitation27%
Record high60° (2003)
Record low15° (1970)
Tue, 2442° / 33°0.08
42 °
Bannockburn, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high42°
Average low33°
Average precipitation0.08 in
Chance of precipitation28%
Record high58° (1966)
Record low17° (2013)
Wed, 2542° / 34°0.09
42 °
Bannockburn, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high42°
Average low34°
Average precipitation0.09 in
Chance of precipitation35%
Record high57° (1966)
Record low19° (2005)
Thu, 2642° / 34°0.12
42 °
Bannockburn, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high42°
Average low34°
Average precipitation0.12 in
Chance of precipitation43%
Record high58° (1990)
Record low12° (1977)
Fri, 2741° / 33°0.21
41 °
Bannockburn, Friday, 27 November
Climate normal for this date — 60-year average.
Average high41°
Average low33°
Average precipitation0.21 in
Chance of precipitation50%
Record high60° (1990)
Record low17° (2018)
Sat, 2840° / 31°0.12
40 °
Bannockburn, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high40°
Average low31°
Average precipitation0.12 in
Chance of precipitation33%
Record high60° (1990)
Record low9° (2018)
Sun, 2940° / 31°0.07
40 °
Bannockburn, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high40°
Average low31°
Average precipitation0.07 in
Chance of precipitation37%
Record high60° (1998)
Record low11° (1976)
Mon, 3041° / 31°0.07
41 °
Bannockburn, Monday, 30 November
Climate normal for this date — 60-year average.
Average high41°
Average low31°
Average precipitation0.07 in
Chance of precipitation30%
Record high60° (1998)
Record low14° (2024)
Tue, 0138° / 30°0.15
38 °
Bannockburn, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high38°
Average low30°
Average precipitation0.15 in
Chance of precipitation43%
Record high59° (1970)
Record low13° (2024)
Wed, 0239° / 30°0.07
39 °
Bannockburn, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high39°
Average low30°
Average precipitation0.07 in
Chance of precipitation30%
Record high60° (1982)
Record low10° (1976)
Thu, 0339° / 30°0.09
39 °
Bannockburn, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high39°
Average low30°
Average precipitation0.09 in
Chance of precipitation38%
Record high61° (2012)
Record low13° (1976)
Fri, 0438° / 30°0.06
38 °
Bannockburn, Friday, 4 December
Climate normal for this date — 60-year average.
Average high38°
Average low30°
Average precipitation0.06 in
Chance of precipitation25%
Record high62° (2017)
Record low5° (2025)
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 Bannockburn, 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 Bannockburn, 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.