Monthly outlook for South Beloit, IL: average high 61.5°, average low 44.1°. That is 2.7° above the climate normal for October. Precipitation is expected on 4 days (about 4.2 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 25 October (71.8°), the coolest 27 October (32.9°).
61.5°/44.1°
Average high / low
+2.7°
Above normal
4 / 5
Wet days / normal
4.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
63.8°
57.7°
+3.4°
27 October – 5 November
57.6°
53.7°
+2.2°
6 November – 15 November
at normal
47.8°
—
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 (15 mi).
Sun, 1861° / 40°0
61 °
South Beloit, Sunday, 18 October
Clear. High 61°, low 40°.
Pressure30.39 inHg
Wind13.9 mph SW
Humidity53%
Visibility6.2 mi
Dew point40°
Mon, 1964° / 40°0
64 °
South Beloit, Monday, 19 October
Clear. High 64°, low 40°.
Pressure30.39 inHg
Wind4 mph S
Humidity58%
Visibility6.2 mi
Dew point45°
Tue, 2065° / 42°0
65 °
South Beloit, Tuesday, 20 October
Mostly clear. High 65°, low 42°.
Pressure30.39 inHg
Wind5.1 mph SE
Humidity49%
Visibility6.2 mi
Dew point44°
Wed, 2167° / 45°0
67 °
South Beloit, Wednesday, 21 October
Clear. High 67°, low 45°.
Pressure30.24 inHg
Wind6.2 mph S
Humidity50%
Visibility—
Dew point45°
Thu, 2269° / 47°0
69 °
South Beloit, Thursday, 22 October
Clear. High 69°, low 47°.
Pressure30.24 inHg
Wind4.7 mph SE
Humidity51%
Visibility—
Dew point47°
Fri, 2369° / 52°0
69 °
South Beloit, Friday, 23 October
Overcast. High 69°, low 52°.
Pressure30.18 inHg
Wind10.4 mph S
Humidity39%
Visibility—
Dew point41°
Sat, 2468° / 55°0
68 °
South Beloit, Saturday, 24 October
Overcast. High 68°, low 55°.
Pressure30.15 inHg
Wind14.3 mph S
Humidity39%
Visibility—
Dew point41°
Sun, 2572° / 52°0.08
72 °
South Beloit, Sunday, 25 October
Light rain. High 72°, low 52°.
Pressure29.97 inHg
Wind11.7 mph SW
Humidity43%
Visibility—
Dew point46°
Mon, 2649° / 38°0.58
49 °
South Beloit, Monday, 26 October
Rain. High 49°, low 38°.
Pressure30.15 inHg
Wind14.2 mph N
Humidity77%
Visibility—
Dew point37°
Tue, 2749° / 33°0
49 °
South Beloit, Tuesday, 27 October
Overcast. High 49°, low 33°.
Pressure30.42 inHg
Wind8.3 mph SE
Humidity52%
Visibility—
Dew point29°
Wed, 2853° / 43°1.18
53 °
South Beloit, Wednesday, 28 October
Rain. High 53°, low 43°.
Pressure30.06 inHg
Wind19.2 mph S
Humidity90%
Visibility—
Dew point41°
Thu, 2958° / 46°0.01
58 °
South Beloit, Thursday, 29 October
Light rain. High 58°, low 46°.
Pressure29.97 inHg
Wind24.6 mph W
Humidity69%
Visibility—
Dew point42°
Fri, 3057° / 43°0
57 °
South Beloit, Friday, 30 October
Overcast. High 57°, low 43°.
Pressure30.03 inHg
Wind17 mph S
Humidity60%
Visibility—
Dew point41°
Sat, 3168° / 50°2.35
68 °
South Beloit, Saturday, 31 October
Heavy rain. High 68°, low 50°.
Pressure29.59 inHg
Wind25.1 mph S
Humidity95%
Visibility—
Dew point54°
Sun, 0162° / 46°0.02
62 °
South Beloit, Sunday, 1 November
Light rain. High 62°, low 46°.
Pressure29.91 inHg
Wind17.1 mph W
Humidity65%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0253° / 39°0.1
53 °
South Beloit, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.1 in
Chance of precipitation35%
Record high73° (1961)
Record low21° (1991)
Tue, 0352° / 38°0.06
52 °
South Beloit, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation28%
Record high71° (1964)
Record low15° (1991)
Wed, 0452° / 39°0.09
52 °
South Beloit, 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°0.11
51 °
South Beloit, 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°0.09
51 °
South Beloit, 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°0.03
50 °
South Beloit, 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°0.05
50 °
South Beloit, 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°0.11
50 °
South Beloit, 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°0.11
49 °
South Beloit, 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°0.06
46 °
South Beloit, 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°0.07
45 °
South Beloit, 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°0.04
45 °
South Beloit, 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°0.06
46 °
South Beloit, 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°0.07
46 °
South Beloit, 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)
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 South Beloit, 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 South Beloit, 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.