As of 07:03 CST

Weather in South Byron, WI

31°Current weather

South Byron, Friday, 13 November, 07:03

Overcast. Feels like 21°. High 43°, low 31°.

Pressure30.09 inHg
Wind11.5 mph N
Humidity83%
Visibility6.2 mi
Dew point27°

Monthly outlook for South Byron, WI: average high 45.6°, average low 31.8°. That is 2.4° above the climate normal for November. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 22 November (61.1°), the coolest 25 November (17.8°).

45.6°/31.8°
Average high / low
+2.4°
Above normal
3 / 4
Wet days / normal
0.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
13 November – 22 November50.5°42.7°+4.4°
23 November – 2 December37.4°37.8°-0.2°
3 December – 12 Decemberat normal32.2°—

November records over 66 years

72.1°9 November 2020All-time high
-0.4°29 November 1995All-time low

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

Sat, 1447° / 34°0Overcast
47 °Overcast

South Byron, Saturday, 14 November

Overcast. High 47°, low 34°.

Pressure30.30 inHg
Wind8.4 mph NW
Humidity70%
Visibility6.2 mi
Dew point30°
Sun, 1545° / 27°0Clear
45 °Clear

South Byron, Sunday, 15 November

Clear. High 45°, low 27°.

Pressure30.45 inHg
Wind1.8 mph W
Humidity63%
Visibility6.2 mi
Dew point32°
Mon, 1648° / 30°0Clear
48 °Clear

South Byron, Monday, 16 November

Clear. High 48°, low 30°.

Pressure30.47 inHg
Wind10 mph SW
Humidity58%
Visibility6.2 mi
Dew point33°
Tue, 1751° / 34°0Overcast
51 °Overcast

South Byron, Tuesday, 17 November

Overcast. High 51°, low 34°.

Pressure30.42 inHg
Wind10.2 mph S
Humidity59%
Visibility—
Dew point33°
Wed, 1852° / 35°0Overcast
52 °Overcast

South Byron, Wednesday, 18 November

Overcast. High 52°, low 35°.

Pressure30.27 inHg
Wind14.6 mph S
Humidity61%
Visibility—
Dew point35°
Thu, 1958° / 43°0Partly cloudy
58 °Partly cloudy

South Byron, Thursday, 19 November

Partly cloudy. High 58°, low 43°.

Pressure30.09 inHg
Wind21 mph W
Humidity55%
Visibility—
Dew point41°
Fri, 2048° / 37°0Overcast
48 °Overcast

South Byron, Friday, 20 November

Overcast. High 48°, low 37°.

Pressure30.42 inHg
Wind8.1 mph NW
Humidity54%
Visibility—
Dew point30°
Sat, 2152° / 42°0.29Light rain
52 °Light rain

South Byron, Saturday, 21 November

Light rain. High 52°, low 42°.

Pressure30.03 inHg
Wind13.7 mph S
Humidity95%
Visibility—
Dew point49°
Sun, 2261° / 52°0.02Light rain
61 °Light rain

South Byron, Sunday, 22 November

Light rain. High 61°, low 52°.

Pressure29.83 inHg
Wind19.8 mph S
Humidity66%
Visibility—
Dew point49°
Mon, 2357° / 34°0.53Snow
57 °Snow

South Byron, Monday, 23 November

Snow. High 57°, low 34°.

Pressure29.77 inHg
Wind19.7 mph SW
Humidity86%
Visibility—
Dew point43°
Tue, 2431° / 22°0.05Light snow
31 °Light snow

South Byron, Tuesday, 24 November

Light snow. High 31°, low 22°.

Pressure30.18 inHg
Wind16.7 mph NW
Humidity55%
Visibility—
Dew point15°
Wed, 2527° / 18°0Clear
27 °Clear

South Byron, Wednesday, 25 November

Clear. High 27°, low 18°.

Pressure30.59 inHg
Wind11.9 mph NW
Humidity34%
Visibility—
Dew point1°
Thu, 2631° / 19°0Mostly clear
31 °Mostly clear

South Byron, Thursday, 26 November

Mostly clear. High 31°, low 19°.

Pressure30.53 inHg
Wind7 mph S
Humidity31%
Visibility—
Dew point2°
Fri, 2737° / 23°0Overcast
37 °Overcast

South Byron, Friday, 27 November

Overcast. High 37°, low 23°.

Pressure30.21 inHg
Wind16.4 mph SW
Humidity34%
Visibility—
Dew point10°
Sat, 2842° / 30°0Overcast
42 °Overcast

South Byron, Saturday, 28 November

Overcast. High 42°, low 30°.

Pressure30.09 inHg
Wind14.4 mph SW
Humidity59%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2937° / 25°0.06Climate normal
37 °Climate normal

South Byron, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high37°
Average low25°
Average precipitation0.06 in
Chance of precipitation32%
Record high62° (1998)
Record low0° (1995)
Mon, 3037° / 25°0.05Climate normal
37 °Climate normal

South Byron, Monday, 30 November

Climate normal for this date — 60-year average.

Average high37°
Average low25°
Average precipitation0.05 in
Chance of precipitation27%
Record high64° (1998)
Record low4° (1976)
Tue, 0135° / 24°0.09Climate normal
35 °Climate normal

South Byron, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high35°
Average low24°
Average precipitation0.09 in
Chance of precipitation32%
Record high57° (1970)
Record low2° (2025)
Wed, 0236° / 23°0.05Climate normal
36 °Climate normal

South Byron, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high36°
Average low23°
Average precipitation0.05 in
Chance of precipitation23%
Record high64° (1982)
Record low-1° (1976)
Thu, 0335° / 23°0.09Climate normal
35 °Climate normal

South Byron, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high35°
Average low23°
Average precipitation0.09 in
Chance of precipitation32%
Record high63° (1982)
Record low-7° (1985)
Fri, 0434° / 22°0.04Climate normal
34 °Climate normal

South Byron, Friday, 4 December

Climate normal for this date — 60-year average.

Average high34°
Average low22°
Average precipitation0.04 in
Chance of precipitation27%
Record high58° (2017)
Record low-4° (2025)
Sat, 0535° / 22°0.06Climate normal
35 °Climate normal

South Byron, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high35°
Average low22°
Average precipitation0.06 in
Chance of precipitation32%
Record high64° (2001)
Record low-3° (2005)
Sun, 0632° / 20°0.04Climate normal
32 °Climate normal

South Byron, Sunday, 6 December

Climate normal for this date — 60-year average.

Average high32°
Average low20°
Average precipitation0.04 in
Chance of precipitation28%
Record high54° (1998)
Record low-7° (2007)
Mon, 0730° / 19°0.07Climate normal
30 °Climate normal

South Byron, Monday, 7 December

Climate normal for this date — 60-year average.

Average high30°
Average low19°
Average precipitation0.07 in
Chance of precipitation27%
Record high48° (1963)
Record low-9° (1972)
Tue, 0832° / 20°0.05Climate normal
32 °Climate normal

South Byron, Tuesday, 8 December

Climate normal for this date — 60-year average.

Average high32°
Average low20°
Average precipitation0.05 in
Chance of precipitation25%
Record high53° (2023)
Record low-6° (2005)
Wed, 0932° / 20°0.08Climate normal
32 °Climate normal

South Byron, Wednesday, 9 December

Climate normal for this date — 60-year average.

Average high32°
Average low20°
Average precipitation0.08 in
Chance of precipitation45%
Record high47° (1993)
Record low-11° (1995)
Thu, 1031° / 19°0.08Climate normal
31 °Climate normal

South Byron, Thursday, 10 December

Climate normal for this date — 60-year average.

Average high31°
Average low19°
Average precipitation0.08 in
Chance of precipitation25%
Record high55° (2015)
Record low-9° (1978)
Fri, 1130° / 17°0.08Climate normal
30 °Climate normal

South Byron, Friday, 11 December

Climate normal for this date — 60-year average.

Average high30°
Average low17°
Average precipitation0.08 in
Chance of precipitation23%
Record high50° (1979)
Record low-14° (1972)
Sat, 1231° / 17°0.06Climate normal
31 °Climate normal

South Byron, Saturday, 12 December

Climate normal for this date — 60-year average.

Average high31°
Average low17°
Average precipitation0.06 in
Chance of precipitation17%
Record high53° (1991)
Record low-9° (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 Byron, WI 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 Byron, WI 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.