Monthly outlook for Westmont, IL: average high 50.2°, average low 39.5°. That is 2.9° above the climate normal for November. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 19 November (58.5°), the coolest 14 November (29.7°).
50.2°/39.5°
Average high / low
+2.9°
Above normal
3 / 5
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 November – 23 November
51.4°
46.5°
+2.7°
24 November – 3 December
48.2°
41.4°
+3.7°
4 December – 13 December
at normal
36.7°
—
November records over 66 years
74.8°5 November 1978All-time high
2.3°13 November 2019All-time low
Climate normals and records are computed from the nearest reference point — La Grange (5 mi).
Sun, 1550° / 31°0
50 °
Westmont, Sunday, 15 November
Clear. High 50°, low 31°.
Pressure30.45 inHg
Wind2.6 mph W
Humidity63%
Visibility6.2 mi
Dew point34°
Mon, 1649° / 31°0
49 °
Westmont, Monday, 16 November
Clear. High 49°, low 31°.
Pressure30.53 inHg
Wind6.2 mph SW
Humidity61%
Visibility6.2 mi
Dew point34°
Tue, 1752° / 33°0
52 °
Westmont, Tuesday, 17 November
Mostly clear. High 52°, low 33°.
Pressure30.50 inHg
Wind6.7 mph SW
Humidity67%
Visibility6.2 mi
Dew point39°
Wed, 1855° / 38°0
55 °
Westmont, Wednesday, 18 November
Overcast. High 55°, low 38°.
Pressure30.33 inHg
Wind10.7 mph S
Humidity65%
Visibility6.2 mi
Dew point42°
Thu, 1958° / 46°0.04
58 °
Westmont, Thursday, 19 November
Light rain. High 58°, low 46°.
Pressure30.18 inHg
Wind11 mph SW
Humidity67%
Visibility—
Dew point44°
Fri, 2057° / 48°0
57 °
Westmont, Friday, 20 November
Overcast. High 57°, low 48°.
Pressure30.24 inHg
Wind8.5 mph S
Humidity55%
Visibility—
Dew point38°
Sat, 2157° / 52°0.06
57 °
Westmont, Saturday, 21 November
Light rain. High 57°, low 52°.
Pressure29.85 inHg
Wind17 mph SW
Humidity73%
Visibility—
Dew point48°
Sun, 2248° / 42°0
48 °
Westmont, Sunday, 22 November
Overcast. High 48°, low 42°.
Pressure30.24 inHg
Wind13.8 mph W
Humidity50%
Visibility—
Dew point28°
Mon, 2342° / 36°0
42 °
Westmont, Monday, 23 November
Mostly clear. High 42°, low 36°.
Pressure30.53 inHg
Wind7.8 mph N
Humidity37%
Visibility—
Dew point16°
Tue, 2442° / 34°0
42 °
Westmont, Tuesday, 24 November
Overcast. High 42°, low 34°.
Pressure30.53 inHg
Wind7.7 mph SE
Humidity31%
Visibility—
Dew point11°
Wed, 2541° / 37°0.15
41 °
Westmont, Wednesday, 25 November
Light rain. High 41°, low 37°.
Pressure30.30 inHg
Wind7.4 mph SE
Humidity62%
Visibility—
Dew point27°
Thu, 2650° / 40°0
50 °
Westmont, Thursday, 26 November
Overcast. High 50°, low 40°.
Pressure30.45 inHg
Wind9.6 mph E
Humidity71%
Visibility—
Dew point38°
Fri, 2750° / 41°0
50 °
Westmont, Friday, 27 November
Overcast. High 50°, low 41°.
Pressure30.33 inHg
Wind10 mph E
Humidity61%
Visibility—
Dew point35°
Sat, 2848° / 45°0.56
48 °
Westmont, Saturday, 28 November
Rain. High 48°, low 45°.
Pressure30.09 inHg
Wind8.8 mph E
Humidity94%
Visibility—
Dew point45°
Sun, 2958° / 49°0.01
58 °
Westmont, Sunday, 29 November
Light rain. High 58°, low 49°.
Pressure30.03 inHg
Wind4.8 mph S
Humidity90%
Visibility—
Dew point50°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 3042° / 29°0.09
42 °
Westmont, Monday, 30 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.09 in
Chance of precipitation28%
Record high65° (1998)
Record low12° (1976)
Tue, 0139° / 28°0.15
39 °
Westmont, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.15 in
Chance of precipitation40%
Record high64° (1970)
Record low11° (2025)
Wed, 0240° / 28°0.07
40 °
Westmont, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.07 in
Chance of precipitation33%
Record high68° (1982)
Record low9° (1976)
Thu, 0339° / 28°0.09
39 °
Westmont, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.09 in
Chance of precipitation33%
Record high68° (2012)
Record low6° (2006)
Fri, 0439° / 27°0.07
39 °
Westmont, Friday, 4 December
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.07 in
Chance of precipitation27%
Record high64° (1998)
Record low-2° (1991)
Sat, 0539° / 26°0.09
39 °
Westmont, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high39°
Average low26°
Average precipitation0.09 in
Chance of precipitation32%
Record high66° (2001)
Record low-2° (1991)
Sun, 0637° / 25°0.07
37 °
Westmont, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high37°
Average low25°
Average precipitation0.07 in
Chance of precipitation27%
Record high62° (1998)
Record low4° (2005)
Mon, 0735° / 25°0.13
35 °
Westmont, Monday, 7 December
Climate normal for this date — 60-year average.
Average high35°
Average low25°
Average precipitation0.13 in
Chance of precipitation27%
Record high57° (1980)
Record low-3° (1972)
Tue, 0836° / 26°0.08
36 °
Westmont, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high36°
Average low26°
Average precipitation0.08 in
Chance of precipitation28%
Record high63° (1991)
Record low2° (2006)
Wed, 0937° / 24°0.09
37 °
Westmont, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high37°
Average low24°
Average precipitation0.09 in
Chance of precipitation40%
Record high53° (2023)
Record low-4° (1995)
Thu, 1036° / 24°0.09
36 °
Westmont, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high36°
Average low24°
Average precipitation0.09 in
Chance of precipitation28%
Record high58° (1971)
Record low-7° (1978)
Fri, 1135° / 24°0.12
35 °
Westmont, Friday, 11 December
Climate normal for this date — 60-year average.
Average high35°
Average low24°
Average precipitation0.12 in
Chance of precipitation35%
Record high58° (2021)
Record low-11° (1972)
Sat, 1237° / 24°0.1
37 °
Westmont, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high37°
Average low24°
Average precipitation0.1 in
Chance of precipitation33%
Record high60° (2015)
Record low-4° (2000)
Sun, 1337° / 24°0.06
37 °
Westmont, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high37°
Average low24°
Average precipitation0.06 in
Chance of precipitation25%
Record high62° (2015)
Record low-8° (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 Westmont, 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 Westmont, 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.