Monthly outlook for Portage, IL: average high 57.5°, average low 45.9°. That is 5.8° above the climate normal for November. Precipitation is expected on 2 days (about 1.2 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 3 November (68.4°), the coolest 7 November (34.1°).
57.5°/45.9°
Average high / low
+5.8°
Above normal
2 / 4
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
3 November – 12 November
57°
48.2°
+4.9°
13 November – 22 November
58.3°
44°
+7.9°
23 November – 2 December
at normal
38.7°
—
November records over 66 years
72.9°1 November 2000All-time high
-4.7°26 November 1977All-time low
Climate normals and records are computed from the nearest reference point — Benton (13 mi).
Wed, 0463° / 54°0
63 °
Portage, Wednesday, 4 November
Light rain. High 63°, low 54°.
Pressure29.62 inHg
Wind12.8 mph SW
Humidity74%
Visibility6.2 mi
Dew point48°
Thu, 0556° / 49°0.06
56 °
Portage, Thursday, 5 November
Light rain. High 56°, low 49°.
Pressure29.71 inHg
Wind9.1 mph W
Humidity82%
Visibility6.2 mi
Dew point49°
Fri, 0652° / 47°0
52 °
Portage, Friday, 6 November
Overcast. High 52°, low 47°.
Pressure30.12 inHg
Wind8.8 mph N
Humidity61%
Visibility6.2 mi
Dew point39°
Sat, 0754° / 34°0
54 °
Portage, Saturday, 7 November
Overcast. High 54°, low 34°.
Pressure30.15 inHg
Wind9.7 mph SW
Humidity60%
Visibility—
Dew point36°
Sun, 0857° / 47°0
57 °
Portage, Sunday, 8 November
Clear. High 57°, low 47°.
Pressure30.03 inHg
Wind17.3 mph NW
Humidity54%
Visibility—
Dew point38°
Mon, 0962° / 44°0
62 °
Portage, Monday, 9 November
Partly cloudy. High 62°, low 44°.
Pressure30.03 inHg
Wind13.4 mph SW
Humidity61%
Visibility—
Dew point45°
Tue, 1057° / 45°0
57 °
Portage, Tuesday, 10 November
Overcast. High 57°, low 45°.
Pressure30.18 inHg
Wind10.7 mph N
Humidity43%
Visibility—
Dew point34°
Wed, 1149° / 40°0
49 °
Portage, Wednesday, 11 November
Overcast. High 49°, low 40°.
Pressure30.45 inHg
Wind10.7 mph NE
Humidity59%
Visibility—
Dew point34°
Thu, 1250° / 35°0
50 °
Portage, Thursday, 12 November
Overcast. High 50°, low 35°.
Pressure30.30 inHg
Wind6.1 mph SE
Humidity57%
Visibility—
Dew point32°
Fri, 1356° / 40°0
56 °
Portage, Friday, 13 November
Overcast. High 56°, low 40°.
Pressure30.00 inHg
Wind5 mph SW
Humidity62%
Visibility—
Dew point40°
Sat, 1448° / 45°0.01
48 °
Portage, Saturday, 14 November
Light rain. High 48°, low 45°.
Pressure30.09 inHg
Wind10.6 mph E
Humidity88%
Visibility—
Dew point43°
Sun, 1561° / 45°0.01
61 °
Portage, Sunday, 15 November
Light rain. High 61°, low 45°.
Pressure29.97 inHg
Wind11.1 mph SW
Humidity64%
Visibility—
Dew point46°
Mon, 1666° / 49°0
66 °
Portage, Monday, 16 November
Clear. High 66°, low 49°.
Pressure29.88 inHg
Wind14.7 mph SW
Humidity66%
Visibility—
Dew point51°
Tue, 1763° / 47°0
63 °
Portage, Tuesday, 17 November
Overcast. High 63°, low 47°.
Pressure30.00 inHg
Wind7.2 mph S
Humidity60%
Visibility—
Dew point45°
Wed, 1856° / 51°0.01
56 °
Portage, Wednesday, 18 November
Light rain. High 56°, low 51°.
Pressure29.94 inHg
Wind18.1 mph N
Humidity75%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 1945° / 32°0.06
45 °
Portage, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.06 in
Chance of precipitation25%
Record high63° (2020)
Record low11° (1986)
Fri, 2043° / 31°0.09
43 °
Portage, Friday, 20 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.09 in
Chance of precipitation32%
Record high62° (2003)
Record low13° (2022)
Sat, 2142° / 29°0.09
42 °
Portage, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.09 in
Chance of precipitation22%
Record high65° (1990)
Record low6° (1964)
Sun, 2242° / 29°0.03
42 °
Portage, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.03 in
Chance of precipitation18%
Record high60° (2012)
Record low3° (2015)
Mon, 2342° / 29°0.1
42 °
Portage, Monday, 23 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.1 in
Chance of precipitation32%
Record high60° (1966)
Record low9° (1970)
Tue, 2440° / 28°0.06
40 °
Portage, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.06 in
Chance of precipitation25%
Record high60° (2017)
Record low6° (1985)
Wed, 2540° / 29°0.06
40 °
Portage, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high40°
Average low29°
Average precipitation0.06 in
Chance of precipitation25%
Record high55° (1998)
Record low5° (1977)
Thu, 2640° / 27°0.09
40 °
Portage, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high40°
Average low27°
Average precipitation0.09 in
Chance of precipitation33%
Record high63° (1990)
Record low-5° (1977)
Fri, 2738° / 27°0.13
38 °
Portage, Friday, 27 November
Climate normal for this date — 60-year average.
Average high38°
Average low27°
Average precipitation0.13 in
Chance of precipitation42%
Record high64° (1990)
Record low2° (1996)
Sat, 2837° / 25°0.09
37 °
Portage, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high37°
Average low25°
Average precipitation0.09 in
Chance of precipitation20%
Record high62° (1998)
Record low5° (1977)
Sun, 2938° / 26°0.07
38 °
Portage, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.07 in
Chance of precipitation30%
Record high65° (1998)
Record low-2° (1995)
Mon, 3038° / 25°0.07
38 °
Portage, Monday, 30 November
Climate normal for this date — 60-year average.
Average high38°
Average low25°
Average precipitation0.07 in
Chance of precipitation23%
Record high64° (1998)
Record low5° (1964)
Tue, 0136° / 25°0.09
36 °
Portage, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high36°
Average low25°
Average precipitation0.09 in
Chance of precipitation38%
Record high56° (1970)
Record low2° (1971)
Wed, 0237° / 24°0.05
37 °
Portage, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high37°
Average low24°
Average precipitation0.05 in
Chance of precipitation25%
Record high64° (1982)
Record low3° (1971)
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 Portage, 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 Portage, 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.