Monthly outlook for Byron, MN: average high 63.9°, average low 46°. That is 4.2° above the climate normal for October. Precipitation is expected on 2 days (about 0.7 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 10 October (82.4°), the coolest 18 October (27.7°).
63.9°/46°
Average high / low
+4.2°
Above normal
2 / 4
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
63.3°
57.3°
+3.3°
19 October – 28 October
64.9°
53.6°
+6.3°
29 October – 7 November
at normal
48.6°
—
October records over 66 years
85.5°3 October 2025All-time high
16.7°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Rochester (8 mi).
Sat, 1082° / 55°0
82 °
Byron, Saturday, 10 October
Clear. High 82°, low 55°.
Pressure29.83 inHg
Wind17.4 mph S
Humidity53%
Visibility6.2 mi
Dew point58°
Sun, 1181° / 56°0
81 °
Byron, Sunday, 11 October
Partly cloudy. High 81°, low 56°.
Pressure29.80 inHg
Wind11.8 mph S
Humidity51%
Visibility6.2 mi
Dew point57°
Mon, 1278° / 65°0.01
78 °
Byron, Monday, 12 October
Light rain. High 78°, low 65°.
Pressure29.71 inHg
Wind3.5 mph W
Humidity64%
Visibility6.2 mi
Dew point62°
Tue, 1364° / 55°0
64 °
Byron, Tuesday, 13 October
Overcast. High 64°, low 55°.
Pressure29.94 inHg
Wind7.3 mph N
Humidity73%
Visibility6.2 mi
Dew point52°
Wed, 1460° / 52°0
60 °
Byron, Wednesday, 14 October
Overcast. High 60°, low 52°.
Pressure30.21 inHg
Wind7.4 mph N
Humidity61%
Visibility—
Dew point45°
Thu, 1559° / 47°0.56
59 °
Byron, Thursday, 15 October
Rain. High 59°, low 47°.
Pressure29.83 inHg
Wind20.3 mph NW
Humidity97%
Visibility—
Dew point50°
Fri, 1649° / 35°0.02
49 °
Byron, Friday, 16 October
Light rain. High 49°, low 35°.
Pressure29.88 inHg
Wind28.9 mph W
Humidity53%
Visibility—
Dew point28°
Sat, 1743° / 32°0.01
43 °
Byron, Saturday, 17 October
Light snow. High 43°, low 32°.
Pressure30.47 inHg
Wind26.6 mph NW
Humidity43%
Visibility—
Dew point19°
Sun, 1849° / 28°0
49 °
Byron, Sunday, 18 October
Overcast. High 49°, low 28°.
Pressure30.42 inHg
Wind13.2 mph S
Humidity36%
Visibility—
Dew point19°
Mon, 1960° / 40°0
60 °
Byron, Monday, 19 October
Overcast. High 60°, low 40°.
Pressure30.27 inHg
Wind11.4 mph S
Humidity43%
Visibility—
Dew point32°
Tue, 2063° / 41°0
63 °
Byron, Tuesday, 20 October
Partly cloudy. High 63°, low 41°.
Pressure30.30 inHg
Wind12.1 mph S
Humidity45%
Visibility—
Dew point37°
Wed, 2171° / 49°0
71 °
Byron, Wednesday, 21 October
Clear. High 71°, low 49°.
Pressure30.06 inHg
Wind20.4 mph SW
Humidity33%
Visibility—
Dew point36°
Thu, 2260° / 40°0
60 °
Byron, Thursday, 22 October
Clear. High 60°, low 40°.
Pressure30.15 inHg
Wind8.3 mph N
Humidity35%
Visibility—
Dew point28°
Fri, 2368° / 42°0
68 °
Byron, Friday, 23 October
Clear. High 68°, low 42°.
Pressure29.91 inHg
Wind15.5 mph S
Humidity52%
Visibility—
Dew point44°
Sat, 2468° / 52°0
68 °
Byron, Saturday, 24 October
Mostly clear. High 68°, low 52°.
Pressure29.88 inHg
Wind16.3 mph SW
Humidity43%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2552° / 39°0.04
52 °
Byron, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.04 in
Chance of precipitation18%
Record high76° (1989)
Record low24° (1976)
Mon, 2653° / 39°0.08
53 °
Byron, Monday, 26 October
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.08 in
Chance of precipitation20%
Record high74° (1989)
Record low19° (1981)
Tue, 2753° / 38°0.07
53 °
Byron, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.07 in
Chance of precipitation23%
Record high68° (1966)
Record low17° (2020)
Wed, 2851° / 37°0.07
51 °
Byron, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.07 in
Chance of precipitation23%
Record high71° (2016)
Record low22° (1967)
Thu, 2952° / 37°0.07
52 °
Byron, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.07 in
Chance of precipitation23%
Record high78° (2024)
Record low23° (1980)
Fri, 3052° / 38°0.06
52 °
Byron, Friday, 30 October
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation28%
Record high74° (2024)
Record low19° (1988)
Sat, 3150° / 37°0.1
50 °
Byron, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.1 in
Chance of precipitation33%
Record high69° (2000)
Record low20° (1996)
Sun, 0149° / 36°0.11
49 °
Byron, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.11 in
Chance of precipitation30%
Record high70° (2000)
Record low21° (1996)
Mon, 0248° / 35°0.06
48 °
Byron, Monday, 2 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.06 in
Chance of precipitation22%
Record high70° (2022)
Record low12° (1991)
Tue, 0348° / 35°0.06
48 °
Byron, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.06 in
Chance of precipitation22%
Record high70° (2008)
Record low7° (1991)
Wed, 0447° / 34°0.05
47 °
Byron, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.05 in
Chance of precipitation25%
Record high70° (2008)
Record low-5° (1991)
Thu, 0547° / 34°0.07
47 °
Byron, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.07 in
Chance of precipitation25%
Record high67° (2016)
Record low12° (1991)
Fri, 0647° / 34°0.07
47 °
Byron, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.07 in
Chance of precipitation22%
Record high68° (2020)
Record low1° (1991)
Sat, 0747° / 33°0.02
47 °
Byron, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.02 in
Chance of precipitation13%
Record high69° (2001)
Record low-11° (1991)
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, MN 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, MN 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.