Monthly outlook for Buffalo Grove, IL: average high 52.6°, average low 39.6°. That is 5.2° above the climate normal for November. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 21 November (61°), the coolest 23 November (30°).
52.6°/39.6°
Average high / low
+5.2°
Above normal
1 / 5
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 November – 24 November
51.9°
44.6°
+4.1°
25 November – 4 December
53.8°
40.1°
+7.6°
5 December – 14 December
at normal
36°
—
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 (8 mi).
Mon, 1651° / 32°0
51 °
Buffalo Grove, Monday, 16 November
Clear. High 51°, low 32°.
Pressure30.50 inHg
Wind8.1 mph SW
Humidity56%
Visibility6.2 mi
Dew point34°
Tue, 1753° / 36°0
53 °
Buffalo Grove, Tuesday, 17 November
Clear. High 53°, low 36°.
Pressure30.45 inHg
Wind8.6 mph SW
Humidity64%
Visibility6.2 mi
Dew point40°
Wed, 1855° / 39°0
55 °
Buffalo Grove, Wednesday, 18 November
Overcast. High 55°, low 39°.
Pressure30.30 inHg
Wind12 mph SW
Humidity64%
Visibility6.2 mi
Dew point42°
Thu, 1960° / 47°0
60 °
Buffalo Grove, Thursday, 19 November
Clear. High 60°, low 47°.
Pressure30.15 inHg
Wind13.6 mph SW
Humidity64%
Visibility—
Dew point45°
Fri, 2054° / 37°0
54 °
Buffalo Grove, Friday, 20 November
Mostly clear. High 54°, low 37°.
Pressure30.30 inHg
Wind9 mph S
Humidity62%
Visibility—
Dew point38°
Sat, 2161° / 52°0.1
61 °
Buffalo Grove, Saturday, 21 November
Light rain. High 61°, low 52°.
Pressure29.91 inHg
Wind15.7 mph SW
Humidity47%
Visibility—
Dew point40°
Sun, 2248° / 37°0
48 °
Buffalo Grove, Sunday, 22 November
Overcast. High 48°, low 37°.
Pressure30.21 inHg
Wind18 mph W
Humidity48%
Visibility—
Dew point26°
Mon, 2342° / 30°0
42 °
Buffalo Grove, Monday, 23 November
Partly cloudy. High 42°, low 30°.
Pressure30.53 inHg
Wind9.7 mph N
Humidity54%
Visibility—
Dew point25°
Tue, 2445° / 35°0
45 °
Buffalo Grove, Tuesday, 24 November
Partly cloudy. High 45°, low 35°.
Pressure30.50 inHg
Wind6.7 mph S
Humidity31%
Visibility—
Dew point13°
Wed, 2549° / 36°0
49 °
Buffalo Grove, Wednesday, 25 November
Partly cloudy. High 49°, low 36°.
Pressure30.39 inHg
Wind9.2 mph SW
Humidity28%
Visibility—
Dew point15°
Thu, 2655° / 42°0
55 °
Buffalo Grove, Thursday, 26 November
Overcast. High 55°, low 42°.
Pressure30.27 inHg
Wind8.9 mph SW
Humidity59%
Visibility—
Dew point37°
Fri, 2754° / 43°0
54 °
Buffalo Grove, Friday, 27 November
Overcast. High 54°, low 43°.
Pressure30.30 inHg
Wind5.2 mph SW
Humidity49%
Visibility—
Dew point33°
Sat, 2856° / 45°0
56 °
Buffalo Grove, Saturday, 28 November
Overcast. High 56°, low 45°.
Pressure30.39 inHg
Wind3.4 mph W
Humidity53%
Visibility—
Dew point37°
Sun, 2957° / 45°0
57 °
Buffalo Grove, Sunday, 29 November
Overcast. High 57°, low 45°.
Pressure30.30 inHg
Wind4.9 mph NW
Humidity59%
Visibility—
Dew point40°
Mon, 3052° / 47°0
52 °
Buffalo Grove, Monday, 30 November
Overcast. High 52°, low 47°.
Pressure30.15 inHg
Wind6 mph NE
Humidity61%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0138° / 30°0.15
38 °
Buffalo Grove, 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 °
Buffalo Grove, 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 °
Buffalo Grove, 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 °
Buffalo Grove, 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)
Sat, 0538° / 29°0.08
38 °
Buffalo Grove, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high38°
Average low29°
Average precipitation0.08 in
Chance of precipitation37%
Record high61° (2001)
Record low6° (1991)
Sun, 0637° / 27°0.06
37 °
Buffalo Grove, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high37°
Average low27°
Average precipitation0.06 in
Chance of precipitation32%
Record high57° (2001)
Record low8° (1972)
Mon, 0735° / 27°0.12
35 °
Buffalo Grove, Monday, 7 December
Climate normal for this date — 60-year average.
Average high35°
Average low27°
Average precipitation0.12 in
Chance of precipitation28%
Record high51° (1980)
Record low7° (1972)
Tue, 0836° / 28°0.08
36 °
Buffalo Grove, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high36°
Average low28°
Average precipitation0.08 in
Chance of precipitation27%
Record high55° (2023)
Record low9° (2006)
Wed, 0937° / 27°0.09
37 °
Buffalo Grove, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high37°
Average low27°
Average precipitation0.09 in
Chance of precipitation43%
Record high52° (2023)
Record low0° (1995)
Thu, 1035° / 26°0.09
35 °
Buffalo Grove, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high35°
Average low26°
Average precipitation0.09 in
Chance of precipitation23%
Record high55° (2015)
Record low3° (1978)
Fri, 1135° / 26°0.11
35 °
Buffalo Grove, Friday, 11 December
Climate normal for this date — 60-year average.
Average high35°
Average low26°
Average precipitation0.11 in
Chance of precipitation28%
Record high56° (2021)
Record low2° (1972)
Sat, 1236° / 26°0.09
36 °
Buffalo Grove, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high36°
Average low26°
Average precipitation0.09 in
Chance of precipitation28%
Record high55° (1991)
Record low2° (2013)
Sun, 1336° / 26°0.06
36 °
Buffalo Grove, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high36°
Average low26°
Average precipitation0.06 in
Chance of precipitation22%
Record high55° (2015)
Record low2° (2000)
Mon, 1436° / 28°0.11
36 °
Buffalo Grove, Monday, 14 December
Climate normal for this date — 60-year average.
Average high36°
Average low28°
Average precipitation0.11 in
Chance of precipitation33%
Record high58° (1975)
Record low-3° (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 Buffalo Grove, 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 Buffalo Grove, 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.