As of 19:15 CDT

Weather in Byron, WI

76°Current weather

Byron, Monday, 12 October, 19:15

Overcast. Feels like 77°. High 83°, low 62°.

Pressure29.65 inHg
Wind6.9 mph S
Humidity73%
Visibility6.2 mi
Dew point66°

Monthly outlook for Byron, WI: average high 62.7°, average low 48.2°. That is 3.8° above the climate normal for October. Precipitation is expected on 7 days (about 2.2 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 12 October (83°), the coolest 17 October (35.1°).

62.7°/48.2°
Average high / low
+3.8°
Above normal
7 / 5
Wet days / normal
2.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
12 October – 21 October64.1°57.1°+3.9°
22 October – 31 October60.4°53.5°+3.8°
1 November – 10 Novemberat normal48.4°—

October records over 66 years

83.5°1 October 2023All-time high
21°30 October 1988All-time low

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

Tue, 1373° / 58°0.06Rain
73 °Rain

Byron, Tuesday, 13 October

Rain. High 73°, low 58°.

Pressure29.83 inHg
Wind12.2 mph NW
Humidity70%
Visibility6.2 mi
Dew point57°
Wed, 1462° / 54°0.03Light rain
62 °Light rain

Byron, Wednesday, 14 October

Light rain. High 62°, low 54°.

Pressure30.12 inHg
Wind7.2 mph NE
Humidity71%
Visibility6.2 mi
Dew point52°
Thu, 1558° / 52°0.43Rain
58 °Rain

Byron, Thursday, 15 October

Rain. High 58°, low 52°.

Pressure30.15 inHg
Wind8.2 mph E
Humidity77%
Visibility4.1 mi
Dew point50°
Fri, 1653° / 43°0.06Light rain
53 °Light rain

Byron, Friday, 16 October

Light rain. High 53°, low 43°.

Pressure30.24 inHg
Wind24.3 mph NW
Humidity59%
Visibility6.2 mi
Dew point38°
Sat, 1757° / 35°0Clear
57 °Clear

Byron, Saturday, 17 October

Clear. High 57°, low 35°.

Pressure30.36 inHg
Wind15.6 mph SW
Humidity41%
Visibility—
Dew point30°
Sun, 1859° / 43°0Clear
59 °Clear

Byron, Sunday, 18 October

Clear. High 59°, low 43°.

Pressure30.18 inHg
Wind20 mph SW
Humidity43%
Visibility—
Dew point34°
Mon, 1961° / 41°0Overcast
61 °Overcast

Byron, Monday, 19 October

Overcast. High 61°, low 41°.

Pressure30.27 inHg
Wind11.3 mph SW
Humidity46%
Visibility—
Dew point37°
Tue, 2064° / 45°0Partly cloudy
64 °Partly cloudy

Byron, Tuesday, 20 October

Partly cloudy. High 64°, low 45°.

Pressure30.27 inHg
Wind7.8 mph SW
Humidity49%
Visibility—
Dew point42°
Wed, 2171° / 53°0Mostly clear
71 °Mostly clear

Byron, Wednesday, 21 October

Mostly clear. High 71°, low 53°.

Pressure30.15 inHg
Wind12.1 mph S
Humidity58%
Visibility—
Dew point53°
Thu, 2267° / 59°0.6Rain
67 °Rain

Byron, Thursday, 22 October

Rain. High 67°, low 59°.

Pressure30.03 inHg
Wind15.3 mph S
Humidity81%
Visibility—
Dew point57°
Fri, 2369° / 62°0.44Rain
69 °Rain

Byron, Friday, 23 October

Rain. High 69°, low 62°.

Pressure29.83 inHg
Wind17.6 mph SW
Humidity71%
Visibility—
Dew point58°
Sat, 2465° / 44°0.17Rain
65 °Rain

Byron, Saturday, 24 October

Rain. High 65°, low 44°.

Pressure29.65 inHg
Wind22.3 mph S
Humidity81%
Visibility—
Dew point44°
Sun, 2549° / 41°0Overcast
49 °Overcast

Byron, Sunday, 25 October

Overcast. High 49°, low 41°.

Pressure30.03 inHg
Wind14 mph NW
Humidity67%
Visibility—
Dew point38°
Mon, 2655° / 38°0Overcast
55 °Overcast

Byron, Monday, 26 October

Overcast. High 55°, low 38°.

Pressure30.21 inHg
Wind6.2 mph SE
Humidity57%
Visibility—
Dew point36°
Tue, 2758° / 43°0.02Light rain
58 °Light rain

Byron, Tuesday, 27 October

Light rain. High 58°, low 43°.

Pressure29.94 inHg
Wind9.8 mph S
Humidity62%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2852° / 40°0.06Climate normal
52 °Climate normal

Byron, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high52°
Average low40°
Average precipitation0.06 in
Chance of precipitation25%
Record high68° (1974)
Record low26° (1969)
Thu, 2952° / 39°0.05Climate normal
52 °Climate normal

Byron, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high52°
Average low39°
Average precipitation0.05 in
Chance of precipitation17%
Record high77° (2024)
Record low25° (1980)
Fri, 3054° / 40°0.09Climate normal
54 °Climate normal

Byron, Friday, 30 October

Climate normal for this date — 60-year average.

Average high54°
Average low40°
Average precipitation0.09 in
Chance of precipitation35%
Record high74° (2024)
Record low21° (1988)
Sat, 3152° / 40°0.09Climate normal
52 °Climate normal

Byron, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high52°
Average low40°
Average precipitation0.09 in
Chance of precipitation32%
Record high68° (1971)
Record low24° (2019)
Sun, 0151° / 38°0.19Climate normal
51 °Climate normal

Byron, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high51°
Average low38°
Average precipitation0.19 in
Chance of precipitation35%
Record high69° (1990)
Record low18° (2019)
Mon, 0250° / 38°0.11Climate normal
50 °Climate normal

Byron, Monday, 2 November

Climate normal for this date — 60-year average.

Average high50°
Average low38°
Average precipitation0.11 in
Chance of precipitation38%
Record high71° (1961)
Record low19° (1991)
Tue, 0349° / 37°0.05Climate normal
49 °Climate normal

Byron, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high49°
Average low37°
Average precipitation0.05 in
Chance of precipitation27%
Record high70° (2008)
Record low16° (1991)
Wed, 0449° / 37°0.07Climate normal
49 °Climate normal

Byron, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high49°
Average low37°
Average precipitation0.07 in
Chance of precipitation27%
Record high71° (2008)
Record low13° (1991)
Thu, 0549° / 37°0.09Climate normal
49 °Climate normal

Byron, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high49°
Average low37°
Average precipitation0.09 in
Chance of precipitation27%
Record high69° (2015)
Record low18° (1991)
Fri, 0648° / 35°0.09Climate normal
48 °Climate normal

Byron, Friday, 6 November

Climate normal for this date — 60-year average.

Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation30%
Record high68° (1975)
Record low15° (1991)
Sat, 0748° / 35°0.03Climate normal
48 °Climate normal

Byron, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high48°
Average low35°
Average precipitation0.03 in
Chance of precipitation17%
Record high67° (2020)
Record low8° (1991)
Sun, 0847° / 35°0.05Climate normal
47 °Climate normal

Byron, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high47°
Average low35°
Average precipitation0.05 in
Chance of precipitation20%
Record high69° (2020)
Record low6° (2019)
Mon, 0947° / 35°0.11Climate normal
47 °Climate normal

Byron, Monday, 9 November

Climate normal for this date — 60-year average.

Average high47°
Average low35°
Average precipitation0.11 in
Chance of precipitation37%
Record high72° (2020)
Record low17° (2017)
Tue, 1046° / 34°0.1Climate normal
46 °Climate normal

Byron, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high46°
Average low34°
Average precipitation0.1 in
Chance of precipitation42%
Record high71° (2022)
Record low13° (2017)

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 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 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.