Monthly outlook for Blue Island, IL: average high 45.2°, average low 33.7°. That is 0.1° below the climate normal for November. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 21 November (65.3°), the coolest 26 November (22.7°).
45.2°/33.7°
Average high / low
−0.1°
Below normal
1 / 5
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 November – 22 November
52.4°
46.7°
+3.2°
23 November – 2 December
33.1°
42.2°
-5.1°
3 December – 12 December
at normal
37.4°
—
November records over 66 years
74.5°8 November 2020All-time high
3°13 November 2019All-time low
Sat, 1447° / 33°0
47 °
Blue Island, Saturday, 14 November
Partly cloudy. High 47°, low 33°.
Pressure30.27 inHg
Wind5.2 mph NW
Humidity67%
Visibility6.2 mi
Dew point33°
Sun, 1547° / 30°0
47 °
Blue Island, Sunday, 15 November
Clear. High 47°, low 30°.
Pressure30.45 inHg
Wind2.2 mph NW
Humidity61%
Visibility6.2 mi
Dew point33°
Mon, 1649° / 31°0
49 °
Blue Island, Monday, 16 November
Clear. High 49°, low 31°.
Pressure30.53 inHg
Wind5.6 mph SW
Humidity60%
Visibility6.2 mi
Dew point35°
Tue, 1752° / 34°0
52 °
Blue Island, Tuesday, 17 November
Partly cloudy. High 52°, low 34°.
Pressure30.47 inHg
Wind6.8 mph S
Humidity64%
Visibility—
Dew point37°
Wed, 1855° / 37°0
55 °
Blue Island, Wednesday, 18 November
Clear. High 55°, low 37°.
Pressure30.33 inHg
Wind10.2 mph S
Humidity61%
Visibility—
Dew point37°
Thu, 1954° / 47°0.04
54 °
Blue Island, Thursday, 19 November
Light rain. High 54°, low 47°.
Pressure30.18 inHg
Wind11.5 mph SW
Humidity68%
Visibility—
Dew point43°
Fri, 2054° / 45°0
54 °
Blue Island, Friday, 20 November
Partly cloudy. High 54°, low 45°.
Pressure30.39 inHg
Wind4.5 mph W
Humidity56%
Visibility—
Dew point37°
Sat, 2165° / 49°0.02
65 °
Blue Island, Saturday, 21 November
Light rain. High 65°, low 49°.
Pressure29.83 inHg
Wind23.4 mph S
Humidity55%
Visibility—
Dew point46°
Sun, 2258° / 40°0.04
58 °
Blue Island, Sunday, 22 November
Light rain. High 58°, low 40°.
Pressure30.06 inHg
Wind17.4 mph SW
Humidity45%
Visibility—
Dew point25°
Mon, 2341° / 33°0
41 °
Blue Island, Monday, 23 November
Overcast. High 41°, low 33°.
Pressure30.27 inHg
Wind10 mph N
Humidity45%
Visibility—
Dew point21°
Tue, 2431° / 26°0
31 °
Blue Island, Tuesday, 24 November
Overcast. High 31°, low 26°.
Pressure30.18 inHg
Wind12.3 mph NW
Humidity32%
Visibility—
Dew point2°
Wed, 2529° / 24°0
29 °
Blue Island, Wednesday, 25 November
Partly cloudy. High 29°, low 24°.
Pressure30.09 inHg
Wind11.6 mph NW
Humidity32%
Visibility—
Dew point2°
Thu, 2633° / 23°0
33 °
Blue Island, Thursday, 26 November
Partly cloudy. High 33°, low 23°.
Pressure30.09 inHg
Wind16.4 mph SW
Humidity34%
Visibility—
Dew point6°
Fri, 2733° / 28°0
33 °
Blue Island, Friday, 27 November
Overcast. High 33°, low 28°.
Pressure29.91 inHg
Wind14.3 mph SW
Humidity38%
Visibility—
Dew point9°
Sat, 2833° / 24°0
33 °
Blue Island, Saturday, 28 November
Mostly clear. High 33°, low 24°.
Pressure30.12 inHg
Wind7.9 mph W
Humidity24%
Visibility—
Dew point-3°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2941° / 30°0.08
41 °
Blue Island, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high41°
Average low30°
Average precipitation0.08 in
Chance of precipitation32%
Record high64° (1998)
Record low10° (1976)
Mon, 3042° / 30°0.09
42 °
Blue Island, Monday, 30 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.09 in
Chance of precipitation30%
Record high64° (1998)
Record low13° (1976)
Tue, 0139° / 29°0.15
39 °
Blue Island, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high39°
Average low29°
Average precipitation0.15 in
Chance of precipitation40%
Record high64° (1970)
Record low8° (2025)
Wed, 0240° / 29°0.07
40 °
Blue Island, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high40°
Average low29°
Average precipitation0.07 in
Chance of precipitation33%
Record high67° (1982)
Record low11° (1976)
Thu, 0340° / 29°0.09
40 °
Blue Island, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high40°
Average low29°
Average precipitation0.09 in
Chance of precipitation35%
Record high67° (2012)
Record low10° (2006)
Fri, 0439° / 28°0.07
39 °
Blue Island, Friday, 4 December
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.07 in
Chance of precipitation27%
Record high64° (1998)
Record low1° (1991)
Sat, 0539° / 27°0.09
39 °
Blue Island, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.09 in
Chance of precipitation32%
Record high65° (2001)
Record low1° (1991)
Sun, 0637° / 26°0.06
37 °
Blue Island, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high37°
Average low26°
Average precipitation0.06 in
Chance of precipitation27%
Record high61° (1998)
Record low6° (1977)
Mon, 0736° / 26°0.13
36 °
Blue Island, Monday, 7 December
Climate normal for this date — 60-year average.
Average high36°
Average low26°
Average precipitation0.13 in
Chance of precipitation27%
Record high56° (1980)
Record low3° (1977)
Tue, 0837° / 27°0.08
37 °
Blue Island, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high37°
Average low27°
Average precipitation0.08 in
Chance of precipitation28%
Record high62° (1991)
Record low5° (2006)
Wed, 0937° / 26°0.09
37 °
Blue Island, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high37°
Average low26°
Average precipitation0.09 in
Chance of precipitation40%
Record high55° (2023)
Record low-2° (1995)
Thu, 1036° / 25°0.09
36 °
Blue Island, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high36°
Average low25°
Average precipitation0.09 in
Chance of precipitation28%
Record high59° (1971)
Record low-3° (1978)
Fri, 1135° / 25°0.12
35 °
Blue Island, Friday, 11 December
Climate normal for this date — 60-year average.
Average high35°
Average low25°
Average precipitation0.12 in
Chance of precipitation35%
Record high59° (2021)
Record low-6° (1972)
Sat, 1237° / 25°0.1
37 °
Blue Island, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high37°
Average low25°
Average precipitation0.1 in
Chance of precipitation33%
Record high61° (2015)
Record low-1° (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 Blue Island, 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 Blue Island, 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.