Monthly outlook for Big Bay, MI: average high 58.5°, average low 49.5°. That is 4.2° above the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 8 days and 2.1 inches. The warmest day looks like 27 October (64.7°), the coolest 16 October (41.8°).
58.5°/49.5°
Average high / low
+4.2°
Above normal
3 / 8
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
58.2°
51.7°
+3.6°
25 October – 3 November
58.9°
48.4°
+5.8°
4 November – 13 November
at normal
43.1°
—
October records over 66 years
85.5°2 October 2023All-time high
21.9°27 October 2020All-time low
Fri, 1647° / 42°0.69
47 °
Big Bay, Friday, 16 October
Rain. High 47°, low 42°.
Pressure30.18 inHg
Wind24.5 mph N
Humidity80%
Visibility4.0 mi
Dew point40°
Sat, 1759° / 42°0
59 °
Big Bay, Saturday, 17 October
Partly cloudy. High 59°, low 42°.
Pressure30.27 inHg
Wind17 mph W
Humidity45%
Visibility6.2 mi
Dew point30°
Sun, 1863° / 50°0
63 °
Big Bay, Sunday, 18 October
Partly cloudy. High 63°, low 50°.
Pressure30.06 inHg
Wind10.7 mph SW
Humidity46%
Visibility6.2 mi
Dew point37°
Mon, 1959° / 50°0
59 °
Big Bay, Monday, 19 October
Partly cloudy. High 59°, low 50°.
Pressure30.27 inHg
Wind4.6 mph W
Humidity66%
Visibility6.2 mi
Dew point45°
Tue, 2058° / 50°0
58 °
Big Bay, Tuesday, 20 October
Clear. High 58°, low 50°.
Pressure30.36 inHg
Wind8.2 mph E
Humidity86%
Visibility—
Dew point52°
Wed, 2159° / 49°0
59 °
Big Bay, Wednesday, 21 October
Clear. High 59°, low 49°.
Pressure30.33 inHg
Wind12.2 mph S
Humidity54%
Visibility—
Dew point41°
Thu, 2263° / 53°0
63 °
Big Bay, Thursday, 22 October
Overcast. High 63°, low 53°.
Pressure30.09 inHg
Wind11.5 mph S
Humidity70%
Visibility—
Dew point51°
Fri, 2359° / 56°0.11
59 °
Big Bay, Friday, 23 October
Light rain. High 59°, low 56°.
Pressure30.18 inHg
Wind10.1 mph SE
Humidity86%
Visibility—
Dew point55°
Sat, 2464° / 57°0
64 °
Big Bay, Saturday, 24 October
Overcast. High 64°, low 57°.
Pressure30.00 inHg
Wind17.2 mph S
Humidity66%
Visibility—
Dew point49°
Sun, 2557° / 50°0
57 °
Big Bay, Sunday, 25 October
Mostly clear. High 57°, low 50°.
Pressure30.30 inHg
Wind20 mph W
Humidity56%
Visibility—
Dew point38°
Mon, 2657° / 44°0
57 °
Big Bay, Monday, 26 October
Overcast. High 57°, low 44°.
Pressure30.47 inHg
Wind9 mph S
Humidity34%
Visibility—
Dew point27°
Tue, 2765° / 54°0.01
65 °
Big Bay, Tuesday, 27 October
Light rain. High 65°, low 54°.
Pressure30.00 inHg
Wind17.7 mph S
Humidity58%
Visibility—
Dew point45°
Wed, 2862° / 58°0
62 °
Big Bay, Wednesday, 28 October
Light rain. High 62°, low 58°.
Pressure30.06 inHg
Wind12 mph S
Humidity72%
Visibility—
Dew point52°
Thu, 2963° / 49°0
63 °
Big Bay, Thursday, 29 October
Overcast. High 63°, low 49°.
Pressure29.71 inHg
Wind19.5 mph W
Humidity73%
Visibility—
Dew point54°
Fri, 3050° / 44°0
50 °
Big Bay, Friday, 30 October
Clear. High 50°, low 44°.
Pressure30.12 inHg
Wind22.1 mph W
Humidity56%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3148° / 40°0.13
48 °
Big Bay, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high48°
Average low40°
Average precipitation0.13 in
Chance of precipitation57%
Record high62° (1971)
Record low25° (1996)
Sun, 0147° / 39°0.14
47 °
Big Bay, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high47°
Average low39°
Average precipitation0.14 in
Chance of precipitation43%
Record high67° (1990)
Record low26° (2017)
Mon, 0247° / 38°0.14
47 °
Big Bay, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.14 in
Chance of precipitation48%
Record high68° (2022)
Record low23° (1984)
Tue, 0346° / 38°0.09
46 °
Big Bay, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.09 in
Chance of precipitation50%
Record high68° (2022)
Record low22° (1991)
Wed, 0446° / 38°0.1
46 °
Big Bay, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.1 in
Chance of precipitation48%
Record high67° (2008)
Record low25° (1991)
Thu, 0545° / 38°0.13
45 °
Big Bay, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high45°
Average low38°
Average precipitation0.13 in
Chance of precipitation48%
Record high64° (2015)
Record low20° (1991)
Fri, 0645° / 37°0.09
45 °
Big Bay, Friday, 6 November
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.09 in
Chance of precipitation43%
Record high73° (2020)
Record low19° (1991)
Sat, 0745° / 37°0.06
45 °
Big Bay, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.06 in
Chance of precipitation43%
Record high69° (2020)
Record low19° (1991)
Sun, 0844° / 36°0.08
44 °
Big Bay, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high44°
Average low36°
Average precipitation0.08 in
Chance of precipitation43%
Record high68° (2020)
Record low19° (2019)
Mon, 0944° / 35°0.14
44 °
Big Bay, Monday, 9 November
Climate normal for this date — 60-year average.
Average high44°
Average low35°
Average precipitation0.14 in
Chance of precipitation45%
Record high70° (2020)
Record low15° (2017)
Tue, 1042° / 35°0.19
42 °
Big Bay, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high42°
Average low35°
Average precipitation0.19 in
Chance of precipitation67%
Record high60° (2022)
Record low15° (2017)
Wed, 1140° / 33°0.13
40 °
Big Bay, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high40°
Average low33°
Average precipitation0.13 in
Chance of precipitation47%
Record high60° (2012)
Record low16° (2019)
Thu, 1240° / 32°0.15
40 °
Big Bay, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high40°
Average low32°
Average precipitation0.15 in
Chance of precipitation48%
Record high55° (1964)
Record low13° (2019)
Fri, 1340° / 33°0.1
40 °
Big Bay, Friday, 13 November
Climate normal for this date — 60-year average.
Average high40°
Average low33°
Average precipitation0.1 in
Chance of precipitation52%
Record high62° (1999)
Record low14° (2019)
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 Big Bay, MI 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 Big Bay, MI 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.