Monthly outlook for Wilmington, IL: average high 47.3°, average low 35.5°. That is 0° above the climate normal for November. Precipitation is expected on 2 days (about 1.7 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 22 November (59.5°), the coolest 27 November (25.5°).
47.3°/35.5°
Average high / low
+0°
Above normal
2 / 5
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 November – 21 November
50.7°
48.5°
+1.2°
22 November – 1 December
41.6°
43.9°
-1.3°
2 December – 11 December
at normal
38.5°
—
November records over 66 years
77.4°5 November 1978All-time high
5.7°22 November 2015All-time low
Climate normals and records are computed from the nearest reference point — Lorenzo (3 mi).
Fri, 1342° / 34°0
42 °
Wilmington, Friday, 13 November
Overcast. High 42°, low 34°.
Pressure30.06 inHg
Wind11.1 mph N
Humidity68%
Visibility6.2 mi
Dew point30°
Sat, 1446° / 30°0
46 °
Wilmington, Saturday, 14 November
Clear. High 46°, low 30°.
Pressure30.30 inHg
Wind6.3 mph NW
Humidity60%
Visibility6.2 mi
Dew point29°
Sun, 1546° / 29°0
46 °
Wilmington, Sunday, 15 November
Clear. High 46°, low 29°.
Pressure30.45 inHg
Wind3.6 mph NW
Humidity59%
Visibility6.2 mi
Dew point30°
Mon, 1651° / 31°0
51 °
Wilmington, Monday, 16 November
Clear. High 51°, low 31°.
Pressure30.47 inHg
Wind5.9 mph SW
Humidity50%
Visibility—
Dew point29°
Tue, 1754° / 32°0
54 °
Wilmington, Tuesday, 17 November
Clear. High 54°, low 32°.
Pressure30.45 inHg
Wind7.2 mph S
Humidity49%
Visibility—
Dew point31°
Wed, 1855° / 37°0
55 °
Wilmington, Wednesday, 18 November
Clear. High 55°, low 37°.
Pressure30.33 inHg
Wind11.2 mph S
Humidity38%
Visibility—
Dew point26°
Thu, 1956° / 40°0
56 °
Wilmington, Thursday, 19 November
Overcast. High 56°, low 40°.
Pressure30.24 inHg
Wind10 mph S
Humidity38%
Visibility—
Dew point28°
Fri, 2059° / 48°0
59 °
Wilmington, Friday, 20 November
Overcast. High 59°, low 48°.
Pressure30.09 inHg
Wind10.6 mph SW
Humidity48%
Visibility—
Dew point36°
Sat, 2151° / 45°0
51 °
Wilmington, Saturday, 21 November
Overcast. High 51°, low 45°.
Pressure30.15 inHg
Wind8.1 mph W
Humidity78%
Visibility—
Dew point43°
Sun, 2260° / 45°0.03
60 °
Wilmington, Sunday, 22 November
Light rain. High 60°, low 45°.
Pressure29.74 inHg
Wind18.4 mph SW
Humidity64%
Visibility—
Dew point44°
Mon, 2347° / 43°0
47 °
Wilmington, Monday, 23 November
Overcast. High 47°, low 43°.
Pressure30.03 inHg
Wind7.9 mph NW
Humidity67%
Visibility—
Dew point35°
Tue, 2443° / 34°1.54
43 °
Wilmington, Tuesday, 24 November
Snow. High 43°, low 34°.
Pressure29.80 inHg
Wind16.5 mph N
Humidity92%
Visibility—
Dew point40°
Wed, 2537° / 31°0.1
37 °
Wilmington, Wednesday, 25 November
Snow. High 37°, low 31°.
Pressure30.06 inHg
Wind14.9 mph NW
Humidity81%
Visibility—
Dew point29°
Thu, 2633° / 27°0
33 °
Wilmington, Thursday, 26 November
Clear. High 33°, low 27°.
Pressure30.50 inHg
Wind13 mph NW
Humidity51%
Visibility—
Dew point16°
Fri, 2730° / 25°0
30 °
Wilmington, Friday, 27 November
Overcast. High 30°, low 25°.
Pressure30.53 inHg
Wind8.8 mph W
Humidity43%
Visibility—
Dew point10°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2842° / 29°0.13
42 °
Wilmington, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.13 in
Chance of precipitation25%
Record high65° (1998)
Record low6° (2018)
Sun, 2942° / 29°0.07
42 °
Wilmington, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.07 in
Chance of precipitation33%
Record high67° (1998)
Record low7° (1976)
Mon, 3043° / 29°0.09
43 °
Wilmington, Monday, 30 November
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.09 in
Chance of precipitation28%
Record high65° (1998)
Record low11° (1964)
Tue, 0140° / 28°0.15
40 °
Wilmington, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.15 in
Chance of precipitation40%
Record high66° (1970)
Record low12° (1985)
Wed, 0241° / 28°0.06
41 °
Wilmington, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.06 in
Chance of precipitation30%
Record high70° (1982)
Record low8° (1976)
Thu, 0340° / 28°0.09
40 °
Wilmington, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.09 in
Chance of precipitation32%
Record high70° (2012)
Record low6° (1985)
Fri, 0440° / 27°0.07
40 °
Wilmington, Friday, 4 December
Climate normal for this date — 60-year average.
Average high40°
Average low27°
Average precipitation0.07 in
Chance of precipitation25%
Record high67° (1998)
Record low-1° (1991)
Sat, 0540° / 26°0.07
40 °
Wilmington, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.07 in
Chance of precipitation25%
Record high67° (2001)
Record low-1° (1991)
Sun, 0638° / 26°0.06
38 °
Wilmington, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.06 in
Chance of precipitation20%
Record high63° (1980)
Record low-1° (1964)
Mon, 0737° / 25°0.13
37 °
Wilmington, Monday, 7 December
Climate normal for this date — 60-year average.
Average high37°
Average low25°
Average precipitation0.13 in
Chance of precipitation28%
Record high59° (1980)
Record low-4° (1977)
Tue, 0837° / 26°0.07
37 °
Wilmington, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high37°
Average low26°
Average precipitation0.07 in
Chance of precipitation27%
Record high65° (1991)
Record low-2° (2006)
Wed, 0938° / 24°0.08
38 °
Wilmington, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.08 in
Chance of precipitation40%
Record high55° (1990)
Record low-5° (1977)
Thu, 1037° / 24°0.09
37 °
Wilmington, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high37°
Average low24°
Average precipitation0.09 in
Chance of precipitation25%
Record high60° (1971)
Record low-8° (1978)
Fri, 1136° / 24°0.11
36 °
Wilmington, Friday, 11 December
Climate normal for this date — 60-year average.
Average high36°
Average low24°
Average precipitation0.11 in
Chance of precipitation28%
Record high59° (2021)
Record low-14° (1972)
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 Wilmington, 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 Wilmington, 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.