Monthly outlook for Byron, MN: average high 65°, average low 50°. That is 5.6° above the climate normal for October. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 12 October (82.6°), the coolest 26 October (37.9°).
65°/50°
Average high / low
+5.6°
Above normal
4 / 4
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
65.6°
56°
+5.3°
22 October – 31 October
64°
52.4°
+6.5°
1 November – 10 November
at normal
46.7°
—
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).
Tue, 1368° / 55°0
68 °
Byron, Tuesday, 13 October
Overcast. High 68°, low 55°.
Pressure29.91 inHg
Wind9.1 mph NW
Humidity64%
Visibility6.2 mi
Dew point49°
Wed, 1462° / 50°0
62 °
Byron, Wednesday, 14 October
Partly cloudy. High 62°, low 50°.
Pressure30.18 inHg
Wind7.4 mph N
Humidity54%
Visibility6.2 mi
Dew point42°
Thu, 1561° / 51°0.06
61 °
Byron, Thursday, 15 October
Light rain. High 61°, low 51°.
Pressure30.15 inHg
Wind2.7 mph NW
Humidity79%
Visibility6.2 mi
Dew point52°
Fri, 1655° / 44°0
55 °
Byron, Friday, 16 October
Clear. High 55°, low 44°.
Pressure30.56 inHg
Wind14.9 mph N
Humidity48%
Visibility6.2 mi
Dew point31°
Sat, 1762° / 39°0
62 °
Byron, Saturday, 17 October
Clear. High 62°, low 39°.
Pressure30.33 inHg
Wind16.7 mph SW
Humidity33%
Visibility—
Dew point28°
Sun, 1864° / 45°0
64 °
Byron, Sunday, 18 October
Clear. High 64°, low 45°.
Pressure30.00 inHg
Wind21.6 mph SW
Humidity37%
Visibility—
Dew point32°
Mon, 1966° / 48°0
66 °
Byron, Monday, 19 October
Overcast. High 66°, low 48°.
Pressure30.06 inHg
Wind12.7 mph S
Humidity52%
Visibility—
Dew point44°
Tue, 2063° / 46°0
63 °
Byron, Tuesday, 20 October
Clear. High 63°, low 46°.
Pressure30.18 inHg
Wind10.3 mph SE
Humidity64%
Visibility—
Dew point48°
Wed, 2172° / 54°0
72 °
Byron, Wednesday, 21 October
Partly cloudy. High 72°, low 54°.
Pressure30.18 inHg
Wind17.2 mph SE
Humidity67%
Visibility—
Dew point54°
Thu, 2265° / 63°0.26
65 °
Byron, Thursday, 22 October
Light rain. High 65°, low 63°.
Pressure30.12 inHg
Wind16.5 mph S
Humidity88%
Visibility—
Dew point61°
Fri, 2373° / 63°0.25
73 °
Byron, Friday, 23 October
Rain. High 73°, low 63°.
Pressure30.15 inHg
Wind13.4 mph SE
Humidity71%
Visibility—
Dew point61°
Sat, 2470° / 57°0.57
70 °
Byron, Saturday, 24 October
Rain. High 70°, low 57°.
Pressure29.65 inHg
Wind24.6 mph SW
Humidity71%
Visibility—
Dew point59°
Sun, 2555° / 42°0.02
55 °
Byron, Sunday, 25 October
Light rain. High 55°, low 42°.
Pressure30.06 inHg
Wind23.5 mph NW
Humidity75%
Visibility—
Dew point40°
Mon, 2663° / 38°0
63 °
Byron, Monday, 26 October
Overcast. High 63°, low 38°.
Pressure30.09 inHg
Wind15 mph W
Humidity45%
Visibility—
Dew point35°
Tue, 2757° / 43°0
57 °
Byron, Tuesday, 27 October
Mostly clear. High 57°, low 43°.
Pressure29.97 inHg
Wind23.5 mph N
Humidity39%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 0846° / 33°0.02
46 °
Byron, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.02 in
Chance of precipitation15%
Record high72° (1999)
Record low-2° (1991)
Mon, 0945° / 32°0.12
45 °
Byron, Monday, 9 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.12 in
Chance of precipitation35%
Record high70° (1999)
Record low15° (2017)
Tue, 1043° / 31°0.11
43 °
Byron, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.11 in
Chance of precipitation37%
Record high69° (2012)
Record low8° (1979)
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.