Monthly outlook for Blue Island, IL: average high 54.2°, average low 45.8°. That is 2.3° above the climate normal for November. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 3 November (69.7°), the coolest 9 November (37.8°).
54.2°/45.8°
Average high / low
+2.3°
Above normal
3 / 5
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
2 November – 11 November
56.7°
51.8°
+2.7°
12 November – 21 November
49.9°
46.9°
+1.7°
22 November – 1 December
at normal
42.6°
—
November records over 66 years
74.5°8 November 2020All-time high
3°13 November 2019All-time low
Tue, 0370° / 62°0.29
70 °
Blue Island, Tuesday, 3 November
Heavy rain. High 70°, low 62°.
Pressure29.85 inHg
Wind15.5 mph S
Humidity68%
Visibility6.2 mi
Dew point60°
Wed, 0465° / 56°0.2
65 °
Blue Island, Wednesday, 4 November
Rain. High 65°, low 56°.
Pressure29.68 inHg
Wind12.2 mph SW
Humidity72%
Visibility6.2 mi
Dew point52°
Thu, 0557° / 51°0.04
57 °
Blue Island, Thursday, 5 November
Light rain. High 57°, low 51°.
Pressure29.74 inHg
Wind12.4 mph SW
Humidity60%
Visibility6.2 mi
Dew point43°
Fri, 0655° / 50°0.03
55 °
Blue Island, Friday, 6 November
Light rain. High 55°, low 50°.
Pressure29.88 inHg
Wind5.7 mph N
Humidity79%
Visibility6.2 mi
Dew point48°
Sat, 0755° / 48°0
55 °
Blue Island, Saturday, 7 November
Overcast. High 55°, low 48°.
Pressure30.00 inHg
Wind7.9 mph NW
Humidity68%
Visibility—
Dew point44°
Sun, 0849° / 44°0.17
49 °
Blue Island, Sunday, 8 November
Light rain. High 49°, low 44°.
Pressure29.71 inHg
Wind12.4 mph NW
Humidity76%
Visibility—
Dew point40°
Mon, 0947° / 38°0.01
47 °
Blue Island, Monday, 9 November
Light rain. High 47°, low 38°.
Pressure30.00 inHg
Wind10.5 mph NW
Humidity52%
Visibility—
Dew point29°
Tue, 1054° / 40°0
54 °
Blue Island, Tuesday, 10 November
Clear. High 54°, low 40°.
Pressure30.00 inHg
Wind7 mph W
Humidity48%
Visibility—
Dew point31°
Wed, 1153° / 42°0
53 °
Blue Island, Wednesday, 11 November
Overcast. High 53°, low 42°.
Pressure30.03 inHg
Wind8.5 mph SW
Humidity35%
Visibility—
Dew point24°
Thu, 1250° / 41°0
50 °
Blue Island, Thursday, 12 November
Clear. High 50°, low 41°.
Pressure30.06 inHg
Wind7 mph N
Humidity39%
Visibility—
Dew point24°
Fri, 1351° / 39°0
51 °
Blue Island, Friday, 13 November
Mostly clear. High 51°, low 39°.
Pressure30.03 inHg
Wind10.2 mph SW
Humidity38%
Visibility—
Dew point24°
Sat, 1450° / 42°0
50 °
Blue Island, Saturday, 14 November
Clear. High 50°, low 42°.
Pressure30.12 inHg
Wind10.8 mph W
Humidity37%
Visibility—
Dew point24°
Sun, 1548° / 42°0
48 °
Blue Island, Sunday, 15 November
Overcast. High 48°, low 42°.
Pressure30.15 inHg
Wind7.7 mph E
Humidity42%
Visibility—
Dew point25°
Mon, 1650° / 42°0
50 °
Blue Island, Monday, 16 November
Overcast. High 50°, low 42°.
Pressure30.21 inHg
Wind10 mph E
Humidity50%
Visibility—
Dew point30°
Tue, 1751° / 40°0
51 °
Blue Island, Tuesday, 17 November
Clear. High 51°, low 40°.
Pressure30.24 inHg
Wind8.1 mph E
Humidity25%
Visibility—
Dew point14°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 1848° / 36°0.15
48 °
Blue Island, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.15 in
Chance of precipitation30%
Record high66° (2016)
Record low12° (2014)
Thu, 1947° / 36°0.08
47 °
Blue Island, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.08 in
Chance of precipitation35%
Record high65° (1985)
Record low19° (2014)
Fri, 2046° / 35°0.1
46 °
Blue Island, Friday, 20 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.1 in
Chance of precipitation37%
Record high62° (2003)
Record low14° (2022)
Sat, 2145° / 34°0.11
45 °
Blue Island, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.11 in
Chance of precipitation27%
Record high65° (1990)
Record low11° (1964)
Sun, 2245° / 33°0.05
45 °
Blue Island, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.05 in
Chance of precipitation18%
Record high67° (2010)
Record low11° (2015)
Mon, 2345° / 33°0.09
45 °
Blue Island, Monday, 23 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.09 in
Chance of precipitation28%
Record high63° (2003)
Record low14° (1970)
Tue, 2443° / 32°0.08
43 °
Blue Island, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high43°
Average low32°
Average precipitation0.08 in
Chance of precipitation28%
Record high65° (1966)
Record low15° (1970)
Wed, 2544° / 33°0.08
44 °
Blue Island, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.08 in
Chance of precipitation37%
Record high59° (1966)
Record low18° (2005)
Thu, 2644° / 32°0.13
44 °
Blue Island, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.13 in
Chance of precipitation43%
Record high62° (1990)
Record low8° (1977)
Fri, 2743° / 32°0.22
43 °
Blue Island, Friday, 27 November
Climate normal for this date — 60-year average.
Average high43°
Average low32°
Average precipitation0.22 in
Chance of precipitation47%
Record high65° (1990)
Record low16° (1977)
Sat, 2841° / 30°0.14
41 °
Blue Island, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high41°
Average low30°
Average precipitation0.14 in
Chance of precipitation28%
Record high63° (1990)
Record low6° (2018)
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)
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.