As of 04:17 CDT

Weather in Winnebago, IL

40°Current weather

Winnebago, Monday, 19 October, 04:17

Clear. Feels like 36°. High 66°, low 40°.

Pressure30.36 inHg
Wind4.7 mph SW
Humidity83%
Visibility6.2 mi
Dew point35°

Monthly outlook for Winnebago, IL: average high 60°, average low 42.2°. That is 2.3° above the climate normal for October. Precipitation is expected on 3 days (about 0.7 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 22 October (68.5°), the coolest 29 October (26.7°).

60°/42.2°
Average high / low
+2.3°
Above normal
3 / 5
Wet days / normal
0.7 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
19 October – 28 October63.5°57°+3.6°
29 October – 7 November54.3°52.8°+0.8°
8 November – 17 Novemberat normal46.9°—

October records over 66 years

88°3 October 2025All-time high
22.1°30 October 1988All-time low

Climate normals and records are computed from the nearest reference point — Rockford (9 mi).

Tue, 2067° / 41°0Clear
67 °Clear

Winnebago, Tuesday, 20 October

Clear. High 67°, low 41°.

Pressure30.39 inHg
Wind5 mph SE
Humidity52%
Visibility6.2 mi
Dew point45°
Wed, 2168° / 43°0Clear
68 °Clear

Winnebago, Wednesday, 21 October

Clear. High 68°, low 43°.

Pressure30.27 inHg
Wind4.3 mph SW
Humidity54%
Visibility6.2 mi
Dew point48°
Thu, 2269° / 46°0Clear
69 °Clear

Winnebago, Thursday, 22 October

Clear. High 69°, low 46°.

Pressure30.33 inHg
Wind3 mph E
Humidity61%
Visibility6.2 mi
Dew point52°
Fri, 2367° / 49°0Overcast
67 °Overcast

Winnebago, Friday, 23 October

Overcast. High 67°, low 49°.

Pressure30.33 inHg
Wind8.6 mph SE
Humidity58%
Visibility—
Dew point49°
Sat, 2465° / 50°0Partly cloudy
65 °Partly cloudy

Winnebago, Saturday, 24 October

Partly cloudy. High 65°, low 50°.

Pressure30.39 inHg
Wind9.9 mph S
Humidity54%
Visibility—
Dew point45°
Sun, 2565° / 51°0.02Light rain
65 °Light rain

Winnebago, Sunday, 25 October

Light rain. High 65°, low 51°.

Pressure30.21 inHg
Wind14.3 mph S
Humidity48%
Visibility—
Dew point44°
Mon, 2666° / 46°0Partly cloudy
66 °Partly cloudy

Winnebago, Monday, 26 October

Partly cloudy. High 66°, low 46°.

Pressure30.15 inHg
Wind11.2 mph SW
Humidity39%
Visibility—
Dew point37°
Tue, 2760° / 42°0.53Rain
60 °Rain

Winnebago, Tuesday, 27 October

Rain. High 60°, low 42°.

Pressure30.18 inHg
Wind12.7 mph N
Humidity77%
Visibility—
Dew point39°
Wed, 2842° / 32°0Clear
42 °Clear

Winnebago, Wednesday, 28 October

Clear. High 42°, low 32°.

Pressure30.45 inHg
Wind13.6 mph N
Humidity37%
Visibility—
Dew point16°
Thu, 2944° / 27°0Partly cloudy
44 °Partly cloudy

Winnebago, Thursday, 29 October

Partly cloudy. High 44°, low 27°.

Pressure30.42 inHg
Wind5.3 mph N
Humidity33%
Visibility—
Dew point13°
Fri, 3047° / 28°0Clear
47 °Clear

Winnebago, Friday, 30 October

Clear. High 47°, low 28°.

Pressure30.47 inHg
Wind7.2 mph S
Humidity31%
Visibility—
Dew point15°
Sat, 3149° / 32°0Overcast
49 °Overcast

Winnebago, Saturday, 31 October

Overcast. High 49°, low 32°.

Pressure30.42 inHg
Wind15.2 mph S
Humidity43%
Visibility—
Dew point24°
Sun, 0160° / 44°0Overcast
60 °Overcast

Winnebago, Sunday, 1 November

Overcast. High 60°, low 44°.

Pressure30.24 inHg
Wind14.9 mph SW
Humidity38%
Visibility—
Dew point31°
Mon, 0263° / 51°0.05Light rain
63 °Light rain

Winnebago, Monday, 2 November

Light rain. High 63°, low 51°.

Pressure30.06 inHg
Wind19.7 mph S
Humidity43%
Visibility—
Dew point37°
Tue, 0362° / 53°0.14Light rain
62 °Light rain

Winnebago, Tuesday, 3 November

Light rain. High 62°, low 53°.

Pressure30.21 inHg
Wind16.7 mph SW
Humidity55%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0452° / 39°0.09Climate normal
52 °Climate normal

Winnebago, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high52°
Average low39°
Average precipitation0.09 in
Chance of precipitation25%
Record high70° (2015)
Record low13° (1991)
Thu, 0551° / 38°0.11Climate normal
51 °Climate normal

Winnebago, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high51°
Average low38°
Average precipitation0.11 in
Chance of precipitation25%
Record high70° (1978)
Record low18° (1991)
Fri, 0651° / 37°0.09Climate normal
51 °Climate normal

Winnebago, Friday, 6 November

Climate normal for this date — 60-year average.

Average high51°
Average low37°
Average precipitation0.09 in
Chance of precipitation28%
Record high70° (1975)
Record low21° (1991)
Sat, 0750° / 36°0.03Climate normal
50 °Climate normal

Winnebago, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high50°
Average low36°
Average precipitation0.03 in
Chance of precipitation17%
Record high67° (2020)
Record low10° (1991)
Sun, 0850° / 36°0.05Climate normal
50 °Climate normal

Winnebago, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high50°
Average low36°
Average precipitation0.05 in
Chance of precipitation20%
Record high71° (2020)
Record low13° (1991)
Mon, 0950° / 37°0.11Climate normal
50 °Climate normal

Winnebago, Monday, 9 November

Climate normal for this date — 60-year average.

Average high50°
Average low37°
Average precipitation0.11 in
Chance of precipitation32%
Record high73° (2020)
Record low17° (1991)
Tue, 1049° / 35°0.11Climate normal
49 °Climate normal

Winnebago, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high49°
Average low35°
Average precipitation0.11 in
Chance of precipitation30%
Record high71° (2022)
Record low15° (2017)
Wed, 1146° / 33°0.06Climate normal
46 °Climate normal

Winnebago, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.06 in
Chance of precipitation25%
Record high69° (1964)
Record low13° (2019)
Thu, 1245° / 32°0.07Climate normal
45 °Climate normal

Winnebago, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high45°
Average low32°
Average precipitation0.07 in
Chance of precipitation25%
Record high64° (1964)
Record low3° (2019)
Fri, 1345° / 32°0.04Climate normal
45 °Climate normal

Winnebago, Friday, 13 November

Climate normal for this date — 60-year average.

Average high45°
Average low32°
Average precipitation0.04 in
Chance of precipitation18%
Record high69° (1999)
Record low8° (1986)
Sat, 1446° / 32°0.06Climate normal
46 °Climate normal

Winnebago, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high46°
Average low32°
Average precipitation0.06 in
Chance of precipitation28%
Record high67° (1971)
Record low10° (1995)
Sun, 1546° / 33°0.07Climate normal
46 °Climate normal

Winnebago, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.07 in
Chance of precipitation27%
Record high69° (2025)
Record low9° (1995)
Mon, 1646° / 32°0.05Climate normal
46 °Climate normal

Winnebago, Monday, 16 November

Climate normal for this date — 60-year average.

Average high46°
Average low32°
Average precipitation0.05 in
Chance of precipitation17%
Record high62° (1988)
Record low19° (2019)
Tue, 1746° / 33°0.11Climate normal
46 °Climate normal

Winnebago, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.11 in
Chance of precipitation27%
Record high71° (2016)
Record low15° (2005)

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 Winnebago, 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 Winnebago, 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.