Monthly outlook for McCullom Lake, IL: average high 53.4°, average low 40.6°. That is 3.7° above the climate normal for November. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 20 November (62.4°), the coolest 13 November (28.7°).
53.4°/40.6°
Average high / low
+3.7°
Above normal
3 / 4
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
6 November – 15 November
50.7°
47.7°
+1.7°
16 November – 25 November
58°
44°
+7.7°
26 November – 5 December
at normal
39.1°
—
November records over 66 years
73°8 November 2020All-time high
1.6°13 November 2019All-time low
Climate normals and records are computed from the nearest reference point — Round Lake Beach (11 mi).
Sat, 0749° / 30°0
49 °
McCullom Lake, Saturday, 7 November
Partly cloudy. High 49°, low 30°.
Pressure30.18 inHg
Wind7 mph W
Humidity55%
Visibility6.2 mi
Dew point32°
Sun, 0858° / 39°0
58 °
McCullom Lake, Sunday, 8 November
Clear. High 58°, low 39°.
Pressure29.97 inHg
Wind12.9 mph W
Humidity55%
Visibility6.2 mi
Dew point40°
Mon, 0956° / 37°0
56 °
McCullom Lake, Monday, 9 November
Overcast. High 56°, low 37°.
Pressure30.12 inHg
Wind8.8 mph SW
Humidity56%
Visibility6.2 mi
Dew point39°
Tue, 1058° / 44°0
58 °
McCullom Lake, Tuesday, 10 November
Clear. High 58°, low 44°.
Pressure30.00 inHg
Wind7 mph NW
Humidity57%
Visibility6.2 mi
Dew point43°
Wed, 1152° / 37°0.14
52 °
McCullom Lake, Wednesday, 11 November
Light rain. High 52°, low 37°.
Pressure29.97 inHg
Wind5.9 mph E
Humidity59%
Visibility—
Dew point36°
Thu, 1242° / 32°0
42 °
McCullom Lake, Thursday, 12 November
Clear. High 42°, low 32°.
Pressure30.24 inHg
Wind11 mph N
Humidity52%
Visibility—
Dew point25°
Fri, 1342° / 29°0
42 °
McCullom Lake, Friday, 13 November
Overcast. High 42°, low 29°.
Pressure30.06 inHg
Wind7.9 mph NW
Humidity51%
Visibility—
Dew point23°
Sat, 1447° / 31°0
47 °
McCullom Lake, Saturday, 14 November
Clear. High 47°, low 31°.
Pressure30.15 inHg
Wind8.4 mph SW
Humidity49%
Visibility—
Dew point26°
Sun, 1556° / 37°0
56 °
McCullom Lake, Sunday, 15 November
Clear. High 56°, low 37°.
Pressure30.12 inHg
Wind16.8 mph SW
Humidity51%
Visibility—
Dew point35°
Mon, 1660° / 48°0
60 °
McCullom Lake, Monday, 16 November
Overcast. High 60°, low 48°.
Pressure30.09 inHg
Wind19.3 mph SW
Humidity54%
Visibility—
Dew point42°
Tue, 1754° / 50°0
54 °
McCullom Lake, Tuesday, 17 November
Overcast. High 54°, low 50°.
Pressure30.21 inHg
Wind13.8 mph SW
Humidity84%
Visibility—
Dew point47°
Wed, 1855° / 47°0
55 °
McCullom Lake, Wednesday, 18 November
Overcast. High 55°, low 47°.
Pressure30.39 inHg
Wind9.7 mph S
Humidity89%
Visibility—
Dew point49°
Thu, 1958° / 52°0.1
58 °
McCullom Lake, Thursday, 19 November
Light rain. High 58°, low 52°.
Pressure30.33 inHg
Wind14.1 mph SW
Humidity75%
Visibility—
Dew point49°
Fri, 2062° / 53°0.02
62 °
McCullom Lake, Friday, 20 November
Light rain. High 62°, low 53°.
Pressure30.15 inHg
Wind14.9 mph SW
Humidity50%
Visibility—
Dew point42°
Sat, 2159° / 51°0.23
59 °
McCullom Lake, Saturday, 21 November
Light rain. High 59°, low 51°.
Pressure30.00 inHg
Wind17.6 mph S
Humidity89%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2243° / 31°0.04
43 °
McCullom Lake, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.04 in
Chance of precipitation18%
Record high62° (2010)
Record low14° (2015)
Mon, 2343° / 32°0.07
43 °
McCullom Lake, Monday, 23 November
Climate normal for this date — 60-year average.
Average high43°
Average low32°
Average precipitation0.07 in
Chance of precipitation30%
Record high63° (2003)
Record low12° (1970)
Tue, 2442° / 30°0.08
42 °
McCullom Lake, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.08 in
Chance of precipitation28%
Record high60° (1966)
Record low14° (2013)
Wed, 2542° / 32°0.09
42 °
McCullom Lake, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high42°
Average low32°
Average precipitation0.09 in
Chance of precipitation33%
Record high59° (1966)
Record low16° (2005)
Thu, 2642° / 31°0.12
42 °
McCullom Lake, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.12 in
Chance of precipitation45%
Record high61° (1990)
Record low6° (1977)
Fri, 2741° / 31°0.21
41 °
McCullom Lake, Friday, 27 November
Climate normal for this date — 60-year average.
Average high41°
Average low31°
Average precipitation0.21 in
Chance of precipitation50%
Record high63° (1990)
Record low15° (1977)
Sat, 2839° / 28°0.12
39 °
McCullom Lake, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.12 in
Chance of precipitation35%
Record high62° (1990)
Record low4° (2018)
Sun, 2940° / 28°0.08
40 °
McCullom Lake, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.08 in
Chance of precipitation37%
Record high63° (1998)
Record low7° (1976)
Mon, 3040° / 29°0.07
40 °
McCullom Lake, Monday, 30 November
Climate normal for this date — 60-year average.
Average high40°
Average low29°
Average precipitation0.07 in
Chance of precipitation32%
Record high64° (1998)
Record low10° (1964)
Tue, 0138° / 27°0.14
38 °
McCullom Lake, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high38°
Average low27°
Average precipitation0.14 in
Chance of precipitation43%
Record high61° (1970)
Record low11° (2025)
Wed, 0238° / 28°0.07
38 °
McCullom Lake, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high38°
Average low28°
Average precipitation0.07 in
Chance of precipitation32%
Record high64° (1982)
Record low5° (1976)
Thu, 0338° / 27°0.09
38 °
McCullom Lake, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high38°
Average low27°
Average precipitation0.09 in
Chance of precipitation38%
Record high65° (2012)
Record low6° (1985)
Fri, 0438° / 27°0.06
38 °
McCullom Lake, Friday, 4 December
Climate normal for this date — 60-year average.
Average high38°
Average low27°
Average precipitation0.06 in
Chance of precipitation27%
Record high62° (2017)
Record low4° (2025)
Sat, 0538° / 26°0.07
38 °
McCullom Lake, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.07 in
Chance of precipitation35%
Record high65° (2001)
Record low2° (1991)
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 McCullom Lake, 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 McCullom Lake, 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.