As of 03:24 CDT

Weather in Portage, IL

50°Current weather

Portage, Wednesday, 21 October, 03:24

Clear. Feels like 48°. High 73°, low 47°.

Pressure30.27 inHg
Wind5 mph SE
Humidity83%
Visibility6.2 mi
Dew point45°

Monthly outlook for Portage, IL: average high 60.8°, average low 47.5°. That is 3.9° above the climate normal for October. Precipitation is expected on 4 days (about 1.6 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 22 October (74.7°), the coolest 30 October (34.5°).

60.8°/47.5°
Average high / low
+3.9°
Above normal
4 / 5
Wet days / normal
1.6 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
21 October – 30 October63.1°55.3°+4.3°
31 October – 9 November57.1°50.3°+3.8°
10 November – 19 Novemberat normal45°—

October records over 66 years

85.6°3 October 2025All-time high
20.7°30 October 1988All-time low

Climate normals and records are computed from the nearest reference point — Benton (13 mi).

Thu, 2275° / 47°0Clear
75 °Clear

Portage, Thursday, 22 October

Clear. High 75°, low 47°.

Pressure30.27 inHg
Wind3.6 mph SE
Humidity63%
Visibility6.2 mi
Dew point56°
Fri, 2371° / 53°0Overcast
71 °Overcast

Portage, Friday, 23 October

Overcast. High 71°, low 53°.

Pressure30.30 inHg
Wind6.9 mph SE
Humidity65%
Visibility6.2 mi
Dew point55°
Sat, 2469° / 54°0Overcast
69 °Overcast

Portage, Saturday, 24 October

Overcast. High 69°, low 54°.

Pressure30.33 inHg
Wind10.3 mph S
Humidity61%
Visibility6.2 mi
Dew point51°
Sun, 2571° / 54°0Overcast
71 °Overcast

Portage, Sunday, 25 October

Overcast. High 71°, low 54°.

Pressure30.33 inHg
Wind7.4 mph S
Humidity57%
Visibility—
Dew point52°
Mon, 2671° / 54°0Overcast
71 °Overcast

Portage, Monday, 26 October

Overcast. High 71°, low 54°.

Pressure30.21 inHg
Wind10.9 mph E
Humidity60%
Visibility—
Dew point54°
Tue, 2748° / 43°0.26Light rain
48 °Light rain

Portage, Tuesday, 27 October

Light rain. High 48°, low 43°.

Pressure30.30 inHg
Wind12 mph NE
Humidity91%
Visibility—
Dew point41°
Wed, 2853° / 45°0.22Rain
53 °Rain

Portage, Wednesday, 28 October

Rain. High 53°, low 45°.

Pressure30.09 inHg
Wind18.6 mph W
Humidity95%
Visibility—
Dew point48°
Thu, 2950° / 38°0Overcast
50 °Overcast

Portage, Thursday, 29 October

Overcast. High 50°, low 38°.

Pressure30.21 inHg
Wind20.3 mph NW
Humidity52%
Visibility—
Dew point31°
Fri, 3051° / 34°0Clear
51 °Clear

Portage, Friday, 30 October

Clear. High 51°, low 34°.

Pressure30.33 inHg
Wind5.6 mph N
Humidity47%
Visibility—
Dew point29°
Sat, 3149° / 35°0.01Light rain
49 °Light rain

Portage, Saturday, 31 October

Light rain. High 49°, low 35°.

Pressure30.24 inHg
Wind14.2 mph SE
Humidity54%
Visibility—
Dew point31°
Sun, 0150° / 43°0.3Light rain
50 °Light rain

Portage, Sunday, 1 November

Light rain. High 50°, low 43°.

Pressure29.97 inHg
Wind10.2 mph SE
Humidity95%
Visibility—
Dew point47°
Mon, 0255° / 48°0Overcast
55 °Overcast

Portage, Monday, 2 November

Overcast. High 55°, low 48°.

Pressure30.00 inHg
Wind6.2 mph NE
Humidity85%
Visibility—
Dew point49°
Tue, 0360° / 51°0Overcast
60 °Overcast

Portage, Tuesday, 3 November

Overcast. High 60°, low 51°.

Pressure29.97 inHg
Wind15 mph E
Humidity75%
Visibility—
Dew point50°
Wed, 0465° / 54°0.78Rain
65 °Rain

Portage, Wednesday, 4 November

Rain. High 65°, low 54°.

Pressure29.71 inHg
Wind17.1 mph E
Humidity92%
Visibility—
Dew point58°
Thu, 0564° / 57°0.03Light rain
64 °Light rain

Portage, Thursday, 5 November

Light rain. High 64°, low 57°.

Pressure29.80 inHg
Wind18.6 mph SW
Humidity60%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0650° / 36°0.07Climate normal
50 °Climate normal

Portage, Friday, 6 November

Climate normal for this date — 60-year average.

Average high50°
Average low36°
Average precipitation0.07 in
Chance of precipitation25%
Record high68° (2020)
Record low16° (1991)
Sat, 0749° / 35°0.03Climate normal
49 °Climate normal

Portage, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high49°
Average low35°
Average precipitation0.03 in
Chance of precipitation22%
Record high67° (2020)
Record low5° (1991)
Sun, 0849° / 35°0.05Climate normal
49 °Climate normal

Portage, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high49°
Average low35°
Average precipitation0.05 in
Chance of precipitation18%
Record high70° (1999)
Record low6° (1991)
Mon, 0948° / 36°0.1Climate normal
48 °Climate normal

Portage, Monday, 9 November

Climate normal for this date — 60-year average.

Average high48°
Average low36°
Average precipitation0.1 in
Chance of precipitation35%
Record high70° (2020)
Record low16° (1991)
Tue, 1047° / 34°0.12Climate normal
47 °Climate normal

Portage, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high47°
Average low34°
Average precipitation0.12 in
Chance of precipitation30%
Record high70° (2022)
Record low14° (2017)
Wed, 1145° / 31°0.08Climate normal
45 °Climate normal

Portage, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high45°
Average low31°
Average precipitation0.08 in
Chance of precipitation28%
Record high69° (1964)
Record low13° (2019)
Thu, 1243° / 31°0.06Climate normal
43 °Climate normal

Portage, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high43°
Average low31°
Average precipitation0.06 in
Chance of precipitation30%
Record high64° (1964)
Record low3° (2019)
Fri, 1344° / 31°0.05Climate normal
44 °Climate normal

Portage, Friday, 13 November

Climate normal for this date — 60-year average.

Average high44°
Average low31°
Average precipitation0.05 in
Chance of precipitation22%
Record high69° (1999)
Record low6° (1986)
Sat, 1445° / 32°0.04Climate normal
45 °Climate normal

Portage, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high45°
Average low32°
Average precipitation0.04 in
Chance of precipitation28%
Record high65° (2001)
Record low14° (1986)
Sun, 1545° / 33°0.05Climate normal
45 °Climate normal

Portage, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high45°
Average low33°
Average precipitation0.05 in
Chance of precipitation25%
Record high66° (2001)
Record low15° (2019)
Mon, 1645° / 32°0.06Climate normal
45 °Climate normal

Portage, Monday, 16 November

Climate normal for this date — 60-year average.

Average high45°
Average low32°
Average precipitation0.06 in
Chance of precipitation23%
Record high61° (1988)
Record low19° (1989)
Tue, 1745° / 33°0.1Climate normal
45 °Climate normal

Portage, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high45°
Average low33°
Average precipitation0.1 in
Chance of precipitation18%
Record high69° (2016)
Record low13° (2005)
Wed, 1845° / 32°0.09Climate normal
45 °Climate normal

Portage, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high45°
Average low32°
Average precipitation0.09 in
Chance of precipitation32%
Record high66° (1999)
Record low10° (2014)
Thu, 1945° / 32°0.06Climate normal
45 °Climate normal

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)

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.