Monthly outlook for Algonac, MI: average high 62.5°, average low 49.5°. That is 2.1° above the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 7 October (76°), the coolest 19 October (35.7°).
62.5°/49.5°
Average high / low
+2.1°
Above normal
2 / 6
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
67.6°
60.3°
+4°
17 October – 26 October
54.1°
55.6°
-0.9°
27 October – 5 November
at normal
52.5°
—
October records over 66 years
83.8°8 October 2007All-time high
27.5°27 October 1976All-time low
Thu, 0869° / 53°0
69 °
Algonac, Thursday, 8 October
Clear. High 69°, low 53°.
Pressure29.97 inHg
Wind11.5 mph W
Humidity53%
Visibility6.2 mi
Dew point45°
Fri, 0966° / 50°0
66 °
Algonac, Friday, 9 October
Partly cloudy. High 66°, low 50°.
Pressure30.21 inHg
Wind4.5 mph W
Humidity57%
Visibility6.2 mi
Dew point47°
Sat, 1073° / 57°0
73 °
Algonac, Saturday, 10 October
Clear. High 73°, low 57°.
Pressure30.30 inHg
Wind10.9 mph S
Humidity56%
Visibility6.2 mi
Dew point52°
Sun, 1164° / 61°0.08
64 °
Algonac, Sunday, 11 October
Light rain. High 64°, low 61°.
Pressure30.15 inHg
Wind6.9 mph S
Humidity81%
Visibility6.2 mi
Dew point57°
Mon, 1269° / 57°0
69 °
Algonac, Monday, 12 October
Overcast. High 69°, low 57°.
Pressure29.83 inHg
Wind7.7 mph SW
Humidity68%
Visibility—
Dew point57°
Tue, 1364° / 47°0.37
64 °
Algonac, Tuesday, 13 October
Rain. High 64°, low 47°.
Pressure29.80 inHg
Wind20.8 mph NW
Humidity71%
Visibility—
Dew point49°
Wed, 1457° / 43°0
57 °
Algonac, Wednesday, 14 October
Overcast. High 57°, low 43°.
Pressure30.15 inHg
Wind11.1 mph N
Humidity39%
Visibility—
Dew point29°
Thu, 1568° / 54°0
68 °
Algonac, Thursday, 15 October
Mostly clear. High 68°, low 54°.
Pressure29.97 inHg
Wind17.3 mph S
Humidity43%
Visibility—
Dew point42°
Fri, 1670° / 54°0
70 °
Algonac, Friday, 16 October
Clear. High 70°, low 54°.
Pressure30.06 inHg
Wind15 mph N
Humidity49%
Visibility—
Dew point48°
Sat, 1753° / 43°0.01
53 °
Algonac, Saturday, 17 October
Light rain. High 53°, low 43°.
Pressure30.15 inHg
Wind17.2 mph NW
Humidity48%
Visibility—
Dew point31°
Sun, 1849° / 37°0
49 °
Algonac, Sunday, 18 October
Mostly clear. High 49°, low 37°.
Pressure30.36 inHg
Wind13.2 mph NW
Humidity53%
Visibility—
Dew point31°
Mon, 1952° / 36°0
52 °
Algonac, Monday, 19 October
Clear. High 52°, low 36°.
Pressure30.62 inHg
Wind9.8 mph SE
Humidity35%
Visibility—
Dew point23°
Tue, 2054° / 44°0
54 °
Algonac, Tuesday, 20 October
Overcast. High 54°, low 44°.
Pressure30.45 inHg
Wind11.3 mph S
Humidity44%
Visibility—
Dew point31°
Wed, 2161° / 52°0.03
61 °
Algonac, Wednesday, 21 October
Light rain. High 61°, low 52°.
Pressure30.06 inHg
Wind9.4 mph SW
Humidity69%
Visibility—
Dew point49°
Thu, 2256° / 49°0
56 °
Algonac, Thursday, 22 October
Overcast. High 56°, low 49°.
Pressure29.83 inHg
Wind7.8 mph NE
Humidity56%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2356° / 45°0.11
56 °
Algonac, Friday, 23 October
Climate normal for this date — 60-year average.
Average high56°
Average low45°
Average precipitation0.11 in
Chance of precipitation30%
Record high74° (1963)
Record low31° (1969)
Sat, 2456° / 45°0.08
56 °
Algonac, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high56°
Average low45°
Average precipitation0.08 in
Chance of precipitation33%
Record high72° (1963)
Record low30° (1981)
Sun, 2555° / 45°0.09
55 °
Algonac, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.09 in
Chance of precipitation35%
Record high75° (1963)
Record low34° (1962)
Mon, 2654° / 44°0.1
54 °
Algonac, Monday, 26 October
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.1 in
Chance of precipitation30%
Record high76° (1963)
Record low30° (1962)
Tue, 2754° / 44°0.14
54 °
Algonac, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.14 in
Chance of precipitation38%
Record high71° (2000)
Record low28° (1976)
Wed, 2853° / 43°0.09
53 °
Algonac, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high53°
Average low43°
Average precipitation0.09 in
Chance of precipitation30%
Record high68° (1984)
Record low29° (1976)
Thu, 2952° / 42°0.08
52 °
Algonac, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.08 in
Chance of precipitation30%
Record high69° (2024)
Record low29° (1965)
Fri, 3053° / 42°0.07
53 °
Algonac, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.07 in
Chance of precipitation25%
Record high69° (2024)
Record low31° (1988)
Sat, 3154° / 44°0.13
54 °
Algonac, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.13 in
Chance of precipitation38%
Record high70° (2024)
Record low29° (1988)
Sun, 0153° / 44°0.15
53 °
Algonac, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.15 in
Chance of precipitation53%
Record high70° (1974)
Record low29° (2023)
Mon, 0253° / 42°0.24
53 °
Algonac, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.24 in
Chance of precipitation43%
Record high66° (1982)
Record low31° (1996)
Tue, 0351° / 41°0.12
51 °
Algonac, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.12 in
Chance of precipitation27%
Record high67° (1987)
Record low26° (1991)
Wed, 0451° / 41°0.09
51 °
Algonac, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.09 in
Chance of precipitation38%
Record high66° (2003)
Record low24° (1991)
Thu, 0551° / 42°0.11
51 °
Algonac, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.11 in
Chance of precipitation28%
Record high70° (2022)
Record low24° (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 Algonac, 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 Algonac, 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.