Monthly outlook for Big Bay, MI: average high 58.3°, average low 48.2°. That is 4.6° above the climate normal for October. Precipitation is expected on 4 days (about 0.7 inches), against a normal of 8 days and 2.1 inches. The warmest day looks like 24 October (66°), the coolest 26 October (38.4°).
58.3°/48.2°
Average high / low
+4.6°
Above normal
4 / 8
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
58.7°
51.1°
+4.2°
28 October – 6 November
57.5°
47°
+5.8°
7 November – 16 November
at normal
41.7°
—
October records over 66 years
85.5°2 October 2023All-time high
21.9°27 October 2020All-time low
Mon, 1955° / 49°0
55 °
Big Bay, Monday, 19 October
Overcast. High 55°, low 49°.
Pressure30.42 inHg
Wind5.8 mph N
Humidity61%
Visibility6.2 mi
Dew point40°
Tue, 2060° / 46°0
60 °
Big Bay, Tuesday, 20 October
Clear. High 60°, low 46°.
Pressure30.42 inHg
Wind5 mph E
Humidity57%
Visibility6.2 mi
Dew point40°
Wed, 2162° / 52°0
62 °
Big Bay, Wednesday, 21 October
Overcast. High 62°, low 52°.
Pressure30.18 inHg
Wind7.2 mph W
Humidity70%
Visibility6.2 mi
Dew point49°
Thu, 2256° / 51°0.01
56 °
Big Bay, Thursday, 22 October
Light rain. High 56°, low 51°.
Pressure30.39 inHg
Wind11.1 mph SE
Humidity78%
Visibility—
Dew point48°
Fri, 2361° / 48°0
61 °
Big Bay, Friday, 23 October
Partly cloudy. High 61°, low 48°.
Pressure30.33 inHg
Wind15.7 mph S
Humidity59%
Visibility—
Dew point44°
Sat, 2466° / 59°0.05
66 °
Big Bay, Saturday, 24 October
Light rain. High 66°, low 59°.
Pressure29.88 inHg
Wind20.1 mph S
Humidity46%
Visibility—
Dew point44°
Sun, 2554° / 39°0.02
54 °
Big Bay, Sunday, 25 October
Light rain. High 54°, low 39°.
Pressure30.33 inHg
Wind22.8 mph NW
Humidity69%
Visibility—
Dew point33°
Mon, 2656° / 38°0
56 °
Big Bay, Monday, 26 October
Overcast. High 56°, low 38°.
Pressure30.15 inHg
Wind14.9 mph W
Humidity34%
Visibility—
Dew point25°
Tue, 2758° / 46°0
58 °
Big Bay, Tuesday, 27 October
Clear. High 58°, low 46°.
Pressure30.15 inHg
Wind9.8 mph SW
Humidity43%
Visibility—
Dew point34°
Wed, 2860° / 52°0.09
60 °
Big Bay, Wednesday, 28 October
Light rain. High 60°, low 52°.
Pressure29.80 inHg
Wind16.4 mph S
Humidity68%
Visibility—
Dew point46°
Thu, 2958° / 56°0.21
58 °
Big Bay, Thursday, 29 October
Light rain. High 58°, low 56°.
Pressure29.50 inHg
Wind18.2 mph W
Humidity85%
Visibility—
Dew point53°
Fri, 3053° / 46°0
53 °
Big Bay, Friday, 30 October
Mostly clear. High 53°, low 46°.
Pressure29.74 inHg
Wind17.9 mph W
Humidity56%
Visibility—
Dew point36°
Sat, 3155° / 42°0
55 °
Big Bay, Saturday, 31 October
Mostly clear. High 55°, low 42°.
Pressure30.09 inHg
Wind18.7 mph SE
Humidity53%
Visibility—
Dew point36°
Sun, 0155° / 50°0.33
55 °
Big Bay, Sunday, 1 November
Rain. High 55°, low 50°.
Pressure29.41 inHg
Wind26.2 mph W
Humidity75%
Visibility—
Dew point46°
Mon, 0263° / 51°0
63 °
Big Bay, Monday, 2 November
Partly cloudy. High 63°, low 51°.
Pressure29.80 inHg
Wind16.6 mph S
Humidity41%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sat, 1441° / 33°0.06
41 °
Big Bay, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high41°
Average low33°
Average precipitation0.06 in
Chance of precipitation38%
Record high61° (2001)
Record low16° (1986)
Sun, 1541° / 34°0.07
41 °
Big Bay, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high41°
Average low34°
Average precipitation0.07 in
Chance of precipitation42%
Record high59° (2001)
Record low20° (2019)
Mon, 1641° / 33°0.09
41 °
Big Bay, Monday, 16 November
Climate normal for this date — 60-year average.
Average high41°
Average low33°
Average precipitation0.09 in
Chance of precipitation38%
Record high62° (2023)
Record low18° (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.