Monthly outlook for Big Bay, MI: average high 55.2°, average low 46.9°. That is 2.1° above the climate normal for October. Precipitation is expected on 7 days (about 1.5 inches), against a normal of 8 days and 2.2 inches. The warmest day looks like 23 October (66.2°), the coolest 27 October (35.6°).
55.2°/46.9°
Average high / low
+2.1°
Above normal
7 / 8
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
57.5°
52.4°
+2.8°
23 October – 1 November
51.5°
49.3°
+1.2°
2 November – 11 November
at normal
44.3°
—
October records over 66 years
85.5°2 October 2023All-time high
21.9°27 October 2020All-time low
Wed, 1454° / 51°0.02
54 °
Big Bay, Wednesday, 14 October
Light rain. High 54°, low 51°.
Pressure30.18 inHg
Wind11.4 mph NW
Humidity74%
Visibility6.2 mi
Dew point44°
Thu, 1555° / 49°0.18
55 °
Big Bay, Thursday, 15 October
Rain. High 55°, low 49°.
Pressure30.18 inHg
Wind8.2 mph SE
Humidity72%
Visibility6.2 mi
Dew point43°
Fri, 1652° / 46°0.56
52 °
Big Bay, Friday, 16 October
Rain. High 52°, low 46°.
Pressure30.12 inHg
Wind30.4 mph N
Humidity83%
Visibility6.2 mi
Dew point43°
Sat, 1759° / 42°0
59 °
Big Bay, Saturday, 17 October
Overcast. High 59°, low 42°.
Pressure30.21 inHg
Wind14 mph NW
Humidity38%
Visibility—
Dew point29°
Sun, 1863° / 51°0
63 °
Big Bay, Sunday, 18 October
Overcast. High 63°, low 51°.
Pressure29.88 inHg
Wind15.3 mph W
Humidity49%
Visibility—
Dew point41°
Mon, 1956° / 48°0
56 °
Big Bay, Monday, 19 October
Clear. High 56°, low 48°.
Pressure30.09 inHg
Wind17.2 mph W
Humidity51%
Visibility—
Dew point36°
Tue, 2059° / 43°0
59 °
Big Bay, Tuesday, 20 October
Clear. High 59°, low 43°.
Pressure30.30 inHg
Wind10.3 mph S
Humidity50%
Visibility—
Dew point38°
Wed, 2159° / 49°0.01
59 °
Big Bay, Wednesday, 21 October
Light rain. High 59°, low 49°.
Pressure30.21 inHg
Wind13.1 mph S
Humidity89%
Visibility—
Dew point53°
Thu, 2264° / 59°0.07
64 °
Big Bay, Thursday, 22 October
Light rain. High 64°, low 59°.
Pressure29.88 inHg
Wind13.6 mph S
Humidity90%
Visibility—
Dew point60°
Fri, 2366° / 54°0.31
66 °
Big Bay, Friday, 23 October
Rain. High 66°, low 54°.
Pressure29.53 inHg
Wind19.2 mph S
Humidity88%
Visibility—
Dew point59°
Sat, 2448° / 45°0.01
48 °
Big Bay, Saturday, 24 October
Light rain. High 48°, low 45°.
Pressure29.94 inHg
Wind26.4 mph W
Humidity72%
Visibility—
Dew point37°
Sun, 2552° / 42°0.02
52 °
Big Bay, Sunday, 25 October
Light rain. High 52°, low 42°.
Pressure30.06 inHg
Wind19.8 mph NW
Humidity51%
Visibility—
Dew point31°
Mon, 2646° / 40°0.13
46 °
Big Bay, Monday, 26 October
Light rain. High 46°, low 40°.
Pressure30.15 inHg
Wind18.3 mph NW
Humidity74%
Visibility—
Dew point35°
Tue, 2747° / 36°0
47 °
Big Bay, Tuesday, 27 October
Light snow. High 47°, low 36°.
Pressure30.27 inHg
Wind12 mph S
Humidity48%
Visibility—
Dew point25°
Wed, 2850° / 44°0.07
50 °
Big Bay, Wednesday, 28 October
Light rain. High 50°, low 44°.
Pressure29.94 inHg
Wind23.6 mph S
Humidity72%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2948° / 40°0.08
48 °
Big Bay, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high48°
Average low40°
Average precipitation0.08 in
Chance of precipitation38%
Record high65° (1989)
Record low29° (2017)
Fri, 3049° / 40°0.11
49 °
Big Bay, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.11 in
Chance of precipitation42%
Record high71° (2024)
Record low28° (2023)
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)
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.