As of 01:11 CDT

Weather in Byron, WI

62°Current weather

Byron, Sunday, 11 October, 01:11

Clear. Feels like 61°. High 78°, low 58°.

Pressure30.00 inHg
Wind11.5 mph S
Humidity65%
Visibility6.2 mi
Dew point50°

Monthly outlook for Byron, WI: average high 58.5°, average low 42.1°. That is 1.1° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 12 October (82.6°), the coolest 18 October (23.5°).

58.5°/42.1°
Average high / low
+1.1°
Above normal
1 / 5
Wet days / normal
0.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
11 October – 20 October61.1°57.6°+1.9°
21 October – 30 October54.1°53.9°+0.1°
31 October – 9 Novemberat normal49.1°—

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).

Mon, 1283° / 63°0Partly cloudy
83 °Partly cloudy

Byron, Monday, 12 October

Partly cloudy. High 83°, low 63°.

Pressure29.77 inHg
Wind11.1 mph SW
Humidity64%
Visibility6.2 mi
Dew point62°
Tue, 1372° / 58°0Overcast
72 °Overcast

Byron, Tuesday, 13 October

Overcast. High 72°, low 58°.

Pressure29.80 inHg
Wind13.2 mph NW
Humidity71%
Visibility6.2 mi
Dew point58°
Wed, 1463° / 54°0Overcast
63 °Overcast

Byron, Wednesday, 14 October

Overcast. High 63°, low 54°.

Pressure30.09 inHg
Wind7.6 mph N
Humidity64%
Visibility6.2 mi
Dew point49°
Thu, 1559° / 49°0Overcast
59 °Overcast

Byron, Thursday, 15 October

Overcast. High 59°, low 49°.

Pressure30.33 inHg
Wind9.4 mph E
Humidity58%
Visibility—
Dew point43°
Fri, 1654° / 35°0.01Light rain
54 °Light rain

Byron, Friday, 16 October

Light rain. High 54°, low 35°.

Pressure30.33 inHg
Wind23.4 mph N
Humidity50%
Visibility—
Dew point34°
Sat, 1742° / 29°0.01Light rain
42 °Light rain

Byron, Saturday, 17 October

Light rain. High 42°, low 29°.

Pressure30.47 inHg
Wind19.3 mph N
Humidity37%
Visibility—
Dew point15°
Sun, 1845° / 24°0Overcast
45 °Overcast

Byron, Sunday, 18 October

Overcast. High 45°, low 24°.

Pressure30.53 inHg
Wind16.2 mph SW
Humidity31%
Visibility—
Dew point13°
Mon, 1955° / 36°0Partly cloudy
55 °Partly cloudy

Byron, Monday, 19 October

Partly cloudy. High 55°, low 36°.

Pressure30.36 inHg
Wind16.6 mph SW
Humidity38%
Visibility—
Dew point26°
Tue, 2060° / 37°0Mostly clear
60 °Mostly clear

Byron, Tuesday, 20 October

Mostly clear. High 60°, low 37°.

Pressure30.27 inHg
Wind12.9 mph SW
Humidity39%
Visibility—
Dew point31°
Wed, 2162° / 45°0Overcast
62 °Overcast

Byron, Wednesday, 21 October

Overcast. High 62°, low 45°.

Pressure29.91 inHg
Wind21.5 mph SW
Humidity42%
Visibility—
Dew point36°
Thu, 2253° / 42°0Overcast
53 °Overcast

Byron, Thursday, 22 October

Overcast. High 53°, low 42°.

Pressure30.12 inHg
Wind15.3 mph NW
Humidity51%
Visibility—
Dew point34°
Fri, 2351° / 36°0Overcast
51 °Overcast

Byron, Friday, 23 October

Overcast. High 51°, low 36°.

Pressure30.30 inHg
Wind10.6 mph N
Humidity47%
Visibility—
Dew point29°
Sat, 2452° / 34°0Overcast
52 °Overcast

Byron, Saturday, 24 October

Overcast. High 52°, low 34°.

Pressure30.30 inHg
Wind9.4 mph W
Humidity51%
Visibility—
Dew point32°
Sun, 2550° / 35°0Overcast
50 °Overcast

Byron, Sunday, 25 October

Overcast. High 50°, low 35°.

Pressure30.30 inHg
Wind8.8 mph N
Humidity43%
Visibility—
Dew point25°
Mon, 2656° / 39°0.05Light rain
56 °Light rain

Byron, Monday, 26 October

Light rain. High 56°, low 39°.

Pressure30.00 inHg
Wind14 mph S
Humidity79%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2753° / 40°0.07Climate normal
53 °Climate normal

Byron, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high53°
Average low40°
Average precipitation0.07 in
Chance of precipitation25%
Record high73° (2014)
Record low24° (2020)
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)

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.