As of 15:25 CDT

Weather in Byron, WI

49°Current weather

Byron, Friday, 16 October, 15:25

Mostly clear. Feels like 43°. High 52°, low 43°.

Pressure30.18 inHg
Wind17.3 mph N
Humidity74%
Visibility6.2 mi
Dew point41°

Monthly outlook for Byron, WI: average high 60.2°, average low 45.4°. That is 3.2° above the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 25 October (71.1°), the coolest 17 October (38.2°).

60.2°/45.4°
Average high / low
+3.2°
Above normal
3 / 5
Wet days / normal
1.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
16 October – 25 October62.7°55.6°+4°
26 October – 4 November56.1°51.5°+2.5°
5 November – 14 Novemberat normal45.8°—

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).

Sat, 1756° / 38°0Clear
56 °Clear

Byron, Saturday, 17 October

Clear. High 56°, low 38°.

Pressure30.47 inHg
Wind12.4 mph SW
Humidity47%
Visibility6.2 mi
Dew point30°
Sun, 1860° / 44°0Clear
60 °Clear

Byron, Sunday, 18 October

Clear. High 60°, low 44°.

Pressure30.33 inHg
Wind16.5 mph SW
Humidity56%
Visibility6.2 mi
Dew point41°
Mon, 1962° / 43°0Partly cloudy
62 °Partly cloudy

Byron, Monday, 19 October

Partly cloudy. High 62°, low 43°.

Pressure30.36 inHg
Wind7.3 mph SW
Humidity61%
Visibility6.2 mi
Dew point45°
Tue, 2064° / 42°0Partly cloudy
64 °Partly cloudy

Byron, Tuesday, 20 October

Partly cloudy. High 64°, low 42°.

Pressure30.36 inHg
Wind5.5 mph S
Humidity59%
Visibility6.2 mi
Dew point46°
Wed, 2167° / 46°0Mostly clear
67 °Mostly clear

Byron, Wednesday, 21 October

Mostly clear. High 67°, low 46°.

Pressure30.24 inHg
Wind8.1 mph SW
Humidity53%
Visibility—
Dew point46°
Thu, 2267° / 49°0Partly cloudy
67 °Partly cloudy

Byron, Thursday, 22 October

Partly cloudy. High 67°, low 49°.

Pressure30.15 inHg
Wind12.8 mph SW
Humidity47%
Visibility—
Dew point43°
Fri, 2361° / 49°0Overcast
61 °Overcast

Byron, Friday, 23 October

Overcast. High 61°, low 49°.

Pressure30.24 inHg
Wind11.7 mph E
Humidity64%
Visibility—
Dew point47°
Sat, 2467° / 51°0Overcast
67 °Overcast

Byron, Saturday, 24 October

Overcast. High 67°, low 51°.

Pressure30.27 inHg
Wind14 mph SE
Humidity55%
Visibility—
Dew point48°
Sun, 2571° / 52°0Overcast
71 °Overcast

Byron, Sunday, 25 October

Overcast. High 71°, low 52°.

Pressure30.12 inHg
Wind15 mph S
Humidity45%
Visibility—
Dew point46°
Mon, 2663° / 46°0.03Light rain
63 °Light rain

Byron, Monday, 26 October

Light rain. High 63°, low 46°.

Pressure30.12 inHg
Wind12 mph S
Humidity41%
Visibility—
Dew point36°
Tue, 2755° / 40°0Overcast
55 °Overcast

Byron, Tuesday, 27 October

Overcast. High 55°, low 40°.

Pressure30.15 inHg
Wind11.2 mph W
Humidity61%
Visibility—
Dew point37°
Wed, 2850° / 42°0.2Light rain
50 °Light rain

Byron, Wednesday, 28 October

Light rain. High 50°, low 42°.

Pressure30.18 inHg
Wind11.6 mph SE
Humidity94%
Visibility—
Dew point43°
Thu, 2964° / 51°0.83Rain
64 °Rain

Byron, Thursday, 29 October

Rain. High 64°, low 51°.

Pressure29.91 inHg
Wind16.5 mph SE
Humidity91%
Visibility—
Dew point56°
Fri, 3056° / 46°0Overcast
56 °Overcast

Byron, Friday, 30 October

Overcast. High 56°, low 46°.

Pressure30.09 inHg
Wind11.5 mph NW
Humidity69%
Visibility—
Dew point44°
Sat, 3149° / 44°0Overcast
49 °Overcast

Byron, Saturday, 31 October

Overcast. High 49°, low 44°.

Pressure30.30 inHg
Wind17.2 mph NE
Humidity69%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 1144° / 31°0.06Climate normal
44 °Climate normal

Byron, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high44°
Average low31°
Average precipitation0.06 in
Chance of precipitation30%
Record high67° (1964)
Record low13° (2019)
Thu, 1242° / 30°0.06Climate normal
42 °Climate normal

Byron, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high42°
Average low30°
Average precipitation0.06 in
Chance of precipitation30%
Record high61° (1964)
Record low5° (2019)
Fri, 1343° / 30°0.04Climate normal
43 °Climate normal

Byron, Friday, 13 November

Climate normal for this date — 60-year average.

Average high43°
Average low30°
Average precipitation0.04 in
Chance of precipitation23%
Record high65° (1999)
Record low6° (1986)
Sat, 1444° / 31°0.04Climate normal
44 °Climate normal

Byron, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high44°
Average low31°
Average precipitation0.04 in
Chance of precipitation22%
Record high64° (1971)
Record low11° (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 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.