Monthly outlook for Algonac, MI: average high 64.1°, average low 52.1°. That is 3.2° above the climate normal for October. Precipitation is expected on 6 days (about 1.0 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 16 October (79.4°), the coolest 14 October (39.6°).
64.1°/52.1°
Average high / low
+3.2°
Above normal
6 / 6
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
68.3°
59.8°
+4.7°
18 October – 27 October
57.3°
55.4°
+1°
28 October – 6 November
at normal
52.1°
—
October records over 66 years
83.8°8 October 2007All-time high
27.5°27 October 1976All-time low
Fri, 0971° / 51°0
71 °
Algonac, Friday, 9 October
Clear. High 71°, low 51°.
Pressure30.21 inHg
Wind5.3 mph SW
Humidity62%
Visibility6.2 mi
Dew point49°
Sat, 1074° / 59°0
74 °
Algonac, Saturday, 10 October
Clear. High 74°, low 59°.
Pressure30.30 inHg
Wind9.9 mph S
Humidity56%
Visibility6.2 mi
Dew point52°
Sun, 1165° / 59°0.13
65 °
Algonac, Sunday, 11 October
Light rain. High 65°, low 59°.
Pressure30.15 inHg
Wind8.3 mph SE
Humidity89%
Visibility3.5 mi
Dew point58°
Mon, 1268° / 58°0.02
68 °
Algonac, Monday, 12 October
Light rain. High 68°, low 58°.
Pressure29.83 inHg
Wind10.5 mph SW
Humidity71%
Visibility—
Dew point57°
Tue, 1366° / 45°0.22
66 °
Algonac, Tuesday, 13 October
Rain. High 66°, low 45°.
Pressure29.80 inHg
Wind19.4 mph NW
Humidity65%
Visibility—
Dew point47°
Wed, 1454° / 40°0
54 °
Algonac, Wednesday, 14 October
Clear. High 54°, low 40°.
Pressure30.18 inHg
Wind11.9 mph NW
Humidity48%
Visibility—
Dew point33°
Thu, 1570° / 52°0.02
70 °
Algonac, Thursday, 15 October
Light rain. High 70°, low 52°.
Pressure29.94 inHg
Wind17.8 mph S
Humidity54%
Visibility—
Dew point48°
Fri, 1679° / 67°0.18
79 °
Algonac, Friday, 16 October
Light rain. High 79°, low 67°.
Pressure29.91 inHg
Wind16.8 mph SW
Humidity60%
Visibility—
Dew point63°
Sat, 1767° / 58°0.07
67 °
Algonac, Saturday, 17 October
Light rain. High 67°, low 58°.
Pressure30.06 inHg
Wind11.1 mph SW
Humidity80%
Visibility—
Dew point60°
Sun, 1855° / 50°0.17
55 °
Algonac, Sunday, 18 October
Rain. High 55°, low 50°.
Pressure30.21 inHg
Wind11.2 mph W
Humidity61%
Visibility—
Dew point40°
Mon, 1958° / 50°0
58 °
Algonac, Monday, 19 October
Partly cloudy. High 58°, low 50°.
Pressure30.27 inHg
Wind7.9 mph N
Humidity51%
Visibility—
Dew point38°
Tue, 2063° / 49°0
63 °
Algonac, Tuesday, 20 October
Clear. High 63°, low 49°.
Pressure30.06 inHg
Wind12.9 mph N
Humidity48%
Visibility—
Dew point39°
Wed, 2152° / 44°0
52 °
Algonac, Wednesday, 21 October
Overcast. High 52°, low 44°.
Pressure30.24 inHg
Wind14.4 mph N
Humidity53%
Visibility—
Dew point35°
Thu, 2257° / 44°0.01
57 °
Algonac, Thursday, 22 October
Light rain. High 57°, low 44°.
Pressure29.94 inHg
Wind15.4 mph S
Humidity53%
Visibility—
Dew point37°
Fri, 2360° / 56°0.23
60 °
Algonac, Friday, 23 October
Rain. High 60°, low 56°.
Pressure29.77 inHg
Wind22.2 mph S
Humidity87%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Fri, 0650° / 40°0.08
50 °
Algonac, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.08 in
Chance of precipitation33%
Record high68° (2024)
Record low28° (1967)
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.