Monthly outlook for Preston Heights, IL: average high 51.9°, average low 37.5°. That is 3.4° above the climate normal for November. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 21 November (64.7°), the coolest 23 November (27.5°).
51.9°/37.5°
Average high / low
+3.4°
Above normal
3 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 November – 23 November
53.2°
47.3°
+3.3°
24 November – 3 December
49.8°
42.1°
+4.3°
4 December – 13 December
at normal
37.3°
—
November records over 66 years
76.5°5 November 1978All-time high
5.4°26 November 1977All-time low
Climate normals and records are computed from the nearest reference point — Joliet (4 mi).
Sun, 1552° / 32°0
52 °
Preston Heights, Sunday, 15 November
Clear. High 52°, low 32°.
Pressure30.45 inHg
Wind2.2 mph NW
Humidity58%
Visibility6.2 mi
Dew point31°
Mon, 1651° / 31°0
51 °
Preston Heights, Monday, 16 November
Clear. High 51°, low 31°.
Pressure30.53 inHg
Wind5 mph SW
Humidity53%
Visibility6.2 mi
Dew point33°
Tue, 1753° / 32°0
53 °
Preston Heights, Tuesday, 17 November
Mostly clear. High 53°, low 32°.
Pressure30.50 inHg
Wind6.9 mph SW
Humidity61%
Visibility6.2 mi
Dew point38°
Wed, 1857° / 38°0
57 °
Preston Heights, Wednesday, 18 November
Overcast. High 57°, low 38°.
Pressure30.36 inHg
Wind10.8 mph S
Humidity59%
Visibility—
Dew point39°
Thu, 1958° / 47°0.01
58 °
Preston Heights, Thursday, 19 November
Light rain. High 58°, low 47°.
Pressure30.21 inHg
Wind11.3 mph SW
Humidity60%
Visibility—
Dew point42°
Fri, 2060° / 44°0
60 °
Preston Heights, Friday, 20 November
Partly cloudy. High 60°, low 44°.
Pressure30.24 inHg
Wind12.2 mph S
Humidity41%
Visibility—
Dew point32°
Sat, 2165° / 54°0.03
65 °
Preston Heights, Saturday, 21 November
Light rain. High 65°, low 54°.
Pressure29.91 inHg
Wind23.6 mph S
Humidity52%
Visibility—
Dew point45°
Sun, 2250° / 36°0.03
50 °
Preston Heights, Sunday, 22 November
Light rain. High 50°, low 36°.
Pressure30.09 inHg
Wind22.8 mph W
Humidity65%
Visibility—
Dew point32°
Mon, 2340° / 28°0
40 °
Preston Heights, Monday, 23 November
Clear. High 40°, low 28°.
Pressure30.33 inHg
Wind10.1 mph NW
Humidity39%
Visibility—
Dew point14°
Tue, 2442° / 28°0
42 °
Preston Heights, Tuesday, 24 November
Overcast. High 42°, low 28°.
Pressure30.33 inHg
Wind7.7 mph S
Humidity32%
Visibility—
Dew point12°
Wed, 2544° / 38°0.08
44 °
Preston Heights, Wednesday, 25 November
Light rain. High 44°, low 38°.
Pressure30.12 inHg
Wind11.3 mph S
Humidity47%
Visibility—
Dew point23°
Thu, 2652° / 42°0.18
52 °
Preston Heights, Thursday, 26 November
Rain. High 52°, low 42°.
Pressure30.06 inHg
Wind13.3 mph SE
Humidity81%
Visibility—
Dew point43°
Fri, 2764° / 53°0.02
64 °
Preston Heights, Friday, 27 November
Light rain. High 64°, low 53°.
Pressure29.88 inHg
Wind24 mph S
Humidity64%
Visibility—
Dew point51°
Sat, 2860° / 38°0.75
60 °
Preston Heights, Saturday, 28 November
Rain. High 60°, low 38°.
Pressure29.74 inHg
Wind24 mph S
Humidity60%
Visibility—
Dew point38°
Sun, 2937° / 29°0
37 °
Preston Heights, Sunday, 29 November
Overcast. High 37°, low 29°.
Pressure30.21 inHg
Wind15.9 mph W
Humidity54%
Visibility—
Dew point21°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 3042° / 29°0.09
42 °
Preston Heights, Monday, 30 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.09 in
Chance of precipitation27%
Record high65° (1998)
Record low10° (1964)
Tue, 0140° / 28°0.15
40 °
Preston Heights, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.15 in
Chance of precipitation38%
Record high65° (1970)
Record low12° (1985)
Wed, 0241° / 28°0.06
41 °
Preston Heights, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.06 in
Chance of precipitation32%
Record high69° (1982)
Record low8° (1976)
Thu, 0340° / 28°0.09
40 °
Preston Heights, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.09 in
Chance of precipitation33%
Record high70° (2012)
Record low6° (2006)
Fri, 0439° / 27°0.07
39 °
Preston Heights, Friday, 4 December
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.07 in
Chance of precipitation25%
Record high66° (1998)
Record low-2° (1991)
Sat, 0540° / 26°0.08
40 °
Preston Heights, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.08 in
Chance of precipitation28%
Record high67° (2001)
Record low-3° (1991)
Sun, 0638° / 25°0.06
38 °
Preston Heights, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high38°
Average low25°
Average precipitation0.06 in
Chance of precipitation23%
Record high63° (1998)
Record low1° (1964)
Mon, 0736° / 25°0.12
36 °
Preston Heights, Monday, 7 December
Climate normal for this date — 60-year average.
Average high36°
Average low25°
Average precipitation0.12 in
Chance of precipitation27%
Record high58° (1980)
Record low-6° (1972)
Tue, 0837° / 25°0.07
37 °
Preston Heights, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high37°
Average low25°
Average precipitation0.07 in
Chance of precipitation28%
Record high64° (1991)
Record low0° (2006)
Wed, 0937° / 24°0.08
37 °
Preston Heights, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high37°
Average low24°
Average precipitation0.08 in
Chance of precipitation37%
Record high53° (1990)
Record low-5° (1977)
Thu, 1037° / 23°0.09
37 °
Preston Heights, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high37°
Average low23°
Average precipitation0.09 in
Chance of precipitation25%
Record high59° (1971)
Record low-8° (1978)
Fri, 1135° / 23°0.11
35 °
Preston Heights, Friday, 11 December
Climate normal for this date — 60-year average.
Average high35°
Average low23°
Average precipitation0.11 in
Chance of precipitation30%
Record high60° (2021)
Record low-15° (1972)
Sat, 1237° / 23°0.09
37 °
Preston Heights, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high37°
Average low23°
Average precipitation0.09 in
Chance of precipitation27%
Record high64° (2015)
Record low-6° (2000)
Sun, 1337° / 23°0.06
37 °
Preston Heights, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high37°
Average low23°
Average precipitation0.06 in
Chance of precipitation27%
Record high62° (2015)
Record low-13° (2000)
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 Preston Heights, 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 Preston Heights, 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.