Monthly outlook for Loon Lake, IL: average high 52°, average low 37.1°. That is 5° 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 (60°), the coolest 23 November (25.1°).
52°/37.1°
Average high / low
+5°
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°
44.4°
+3.6°
25 November – 4 December
53.8°
39.5°
+7.9°
5 December – 14 December
at normal
35.1°
—
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 (5 mi).
Mon, 1650° / 32°0
50 °
Loon Lake, Monday, 16 November
Clear. High 50°, low 32°.
Pressure30.50 inHg
Wind9.4 mph SW
Humidity53%
Visibility6.2 mi
Dew point33°
Tue, 1754° / 36°0
54 °
Loon Lake, Tuesday, 17 November
Clear. High 54°, low 36°.
Pressure30.45 inHg
Wind9.8 mph SW
Humidity59%
Visibility6.2 mi
Dew point38°
Wed, 1854° / 39°0
54 °
Loon Lake, Wednesday, 18 November
Overcast. High 54°, low 39°.
Pressure30.27 inHg
Wind13.2 mph S
Humidity63%
Visibility6.2 mi
Dew point41°
Thu, 1959° / 46°0
59 °
Loon Lake, Thursday, 19 November
Overcast. High 59°, low 46°.
Pressure30.12 inHg
Wind15.8 mph SW
Humidity63%
Visibility—
Dew point44°
Fri, 2053° / 37°0
53 °
Loon Lake, Friday, 20 November
Clear. High 53°, low 37°.
Pressure30.30 inHg
Wind9.1 mph S
Humidity62%
Visibility—
Dew point37°
Sat, 2160° / 50°0.13
60 °
Loon Lake, Saturday, 21 November
Light rain. High 60°, low 50°.
Pressure29.91 inHg
Wind20.6 mph SW
Humidity53%
Visibility—
Dew point42°
Sun, 2246° / 33°0
46 °
Loon Lake, Sunday, 22 November
Overcast. High 46°, low 33°.
Pressure30.21 inHg
Wind21.8 mph W
Humidity49%
Visibility—
Dew point25°
Mon, 2340° / 25°0
40 °
Loon Lake, Monday, 23 November
Clear. High 40°, low 25°.
Pressure30.56 inHg
Wind10.1 mph N
Humidity56%
Visibility—
Dew point24°
Tue, 2443° / 29°0
43 °
Loon Lake, Tuesday, 24 November
Partly cloudy. High 43°, low 29°.
Pressure30.50 inHg
Wind9.2 mph S
Humidity35%
Visibility—
Dew point15°
Wed, 2547° / 31°0
47 °
Loon Lake, Wednesday, 25 November
Overcast. High 47°, low 31°.
Pressure30.36 inHg
Wind12.5 mph SW
Humidity33%
Visibility—
Dew point18°
Thu, 2654° / 38°0
54 °
Loon Lake, Thursday, 26 November
Overcast. High 54°, low 38°.
Pressure30.24 inHg
Wind12.6 mph SW
Humidity60%
Visibility—
Dew point38°
Fri, 2755° / 41°0
55 °
Loon Lake, Friday, 27 November
Overcast. High 55°, low 41°.
Pressure30.30 inHg
Wind7.4 mph SW
Humidity49%
Visibility—
Dew point34°
Sat, 2857° / 43°0
57 °
Loon Lake, Saturday, 28 November
Overcast. High 57°, low 43°.
Pressure30.36 inHg
Wind4.7 mph W
Humidity51%
Visibility—
Dew point37°
Sun, 2957° / 43°0
57 °
Loon Lake, Sunday, 29 November
Overcast. High 57°, low 43°.
Pressure30.30 inHg
Wind5.8 mph NW
Humidity58%
Visibility—
Dew point40°
Mon, 3052° / 43°0
52 °
Loon Lake, Monday, 30 November
Overcast. High 52°, low 43°.
Pressure30.15 inHg
Wind7.1 mph NE
Humidity60%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0138° / 27°0.14
38 °
Loon 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 °
Loon 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 °
Loon 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 °
Loon 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 °
Loon 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)
Sun, 0636° / 24°0.06
36 °
Loon Lake, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high36°
Average low24°
Average precipitation0.06 in
Chance of precipitation30%
Record high59° (1998)
Record low2° (1972)
Mon, 0734° / 24°0.11
34 °
Loon Lake, Monday, 7 December
Climate normal for this date — 60-year average.
Average high34°
Average low24°
Average precipitation0.11 in
Chance of precipitation28%
Record high54° (1980)
Record low-2° (1972)
Tue, 0835° / 25°0.09
35 °
Loon Lake, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high35°
Average low25°
Average precipitation0.09 in
Chance of precipitation30%
Record high57° (1991)
Record low4° (2006)
Wed, 0935° / 24°0.09
35 °
Loon Lake, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high35°
Average low24°
Average precipitation0.09 in
Chance of precipitation45%
Record high52° (2023)
Record low-5° (1995)
Thu, 1034° / 23°0.09
34 °
Loon Lake, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high34°
Average low23°
Average precipitation0.09 in
Chance of precipitation27%
Record high57° (2015)
Record low-5° (1978)
Fri, 1134° / 22°0.11
34 °
Loon Lake, Friday, 11 December
Climate normal for this date — 60-year average.
Average high34°
Average low22°
Average precipitation0.11 in
Chance of precipitation30%
Record high53° (1965)
Record low-7° (1972)
Sat, 1235° / 23°0.09
35 °
Loon Lake, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high35°
Average low23°
Average precipitation0.09 in
Chance of precipitation28%
Record high57° (1991)
Record low-4° (2013)
Sun, 1335° / 23°0.06
35 °
Loon Lake, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high35°
Average low23°
Average precipitation0.06 in
Chance of precipitation25%
Record high60° (2015)
Record low-6° (2000)
Mon, 1435° / 25°0.11
35 °
Loon Lake, Monday, 14 December
Climate normal for this date — 60-year average.
Average high35°
Average low25°
Average precipitation0.11 in
Chance of precipitation35%
Record high59° (1975)
Record low-9° (1985)
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 Loon 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 Loon 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.