Monthly outlook for Grosse Ile, MI: average high 57.2°, average low 42.4°. That is 1.4° above the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 22 October (69.2°), the coolest 28 October (37°).
57.2°/42.4°
Average high / low
+1.4°
Above normal
2 / 5
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
59°
55.7°
+1.8°
31 October – 9 November
54.3°
52.1°
+1.3°
10 November – 19 November
at normal
46.7°
—
October records over 66 years
84.6°8 October 2007All-time high
26.6°29 October 1965All-time low
Climate normals and records are computed from the nearest reference point — Lincoln Park (8 mi).
Thu, 2269° / 40°0
69 °
Grosse Ile, Thursday, 22 October
Clear. High 69°, low 40°.
Pressure30.24 inHg
Wind3.4 mph N
Humidity68%
Visibility6.2 mi
Dew point51°
Fri, 2360° / 44°0
60 °
Grosse Ile, Friday, 23 October
Light rain. High 60°, low 44°.
Pressure30.42 inHg
Wind4 mph NE
Humidity75%
Visibility6.2 mi
Dew point49°
Sat, 2460° / 45°0
60 °
Grosse Ile, Saturday, 24 October
Clear. High 60°, low 45°.
Pressure30.47 inHg
Wind3.8 mph SE
Humidity66%
Visibility6.2 mi
Dew point45°
Sun, 2562° / 40°0
62 °
Grosse Ile, Sunday, 25 October
Overcast. High 62°, low 40°.
Pressure30.42 inHg
Wind4.2 mph SE
Humidity55%
Visibility—
Dew point43°
Mon, 2665° / 43°0
65 °
Grosse Ile, Monday, 26 October
Overcast. High 65°, low 43°.
Pressure30.21 inHg
Wind8.9 mph NE
Humidity59%
Visibility—
Dew point47°
Tue, 2752° / 41°0.14
52 °
Grosse Ile, Tuesday, 27 October
Light rain. High 52°, low 41°.
Pressure30.27 inHg
Wind13.1 mph N
Humidity79%
Visibility—
Dew point39°
Wed, 2848° / 37°0
48 °
Grosse Ile, Wednesday, 28 October
Clear. High 48°, low 37°.
Pressure30.33 inHg
Wind8.7 mph E
Humidity43%
Visibility—
Dew point24°
Thu, 2954° / 41°0
54 °
Grosse Ile, Thursday, 29 October
Clear. High 54°, low 41°.
Pressure30.15 inHg
Wind11.3 mph W
Humidity40%
Visibility—
Dew point27°
Fri, 3052° / 39°0
52 °
Grosse Ile, Friday, 30 October
Clear. High 52°, low 39°.
Pressure30.24 inHg
Wind8.5 mph NW
Humidity40%
Visibility—
Dew point26°
Sat, 3156° / 45°0
56 °
Grosse Ile, Saturday, 31 October
Clear. High 56°, low 45°.
Pressure30.18 inHg
Wind12.9 mph SE
Humidity49%
Visibility—
Dew point33°
Sun, 0163° / 54°0.65
63 °
Grosse Ile, Sunday, 1 November
Rain. High 63°, low 54°.
Pressure30.06 inHg
Wind17.1 mph SW
Humidity65%
Visibility—
Dew point50°
Mon, 0260° / 49°0.01
60 °
Grosse Ile, Monday, 2 November
Light rain. High 60°, low 49°.
Pressure29.97 inHg
Wind18 mph NW
Humidity39%
Visibility—
Dew point35°
Tue, 0349° / 42°0
49 °
Grosse Ile, Tuesday, 3 November
Partly cloudy. High 49°, low 42°.
Pressure30.24 inHg
Wind10.2 mph NW
Humidity38%
Visibility—
Dew point23°
Wed, 0450° / 40°0
50 °
Grosse Ile, Wednesday, 4 November
Mostly clear. High 50°, low 40°.
Pressure30.18 inHg
Wind5.8 mph W
Humidity33%
Visibility—
Dew point20°
Thu, 0548° / 40°0
48 °
Grosse Ile, Thursday, 5 November
Partly cloudy. High 48°, low 40°.
Pressure30.42 inHg
Wind6.7 mph NE
Humidity40%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0651° / 39°0.05
51 °
Grosse Ile, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.05 in
Chance of precipitation27%
Record high70° (2024)
Record low27° (1967)
Sat, 0750° / 39°0.1
50 °
Grosse Ile, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.1 in
Chance of precipitation28%
Record high67° (2020)
Record low24° (1991)
Sun, 0850° / 39°0.03
50 °
Grosse Ile, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.03 in
Chance of precipitation22%
Record high66° (1975)
Record low20° (1991)
Mon, 0951° / 39°0.11
51 °
Grosse Ile, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.11 in
Chance of precipitation38%
Record high68° (1999)
Record low23° (1991)
Tue, 1050° / 39°0.12
50 °
Grosse Ile, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.12 in
Chance of precipitation30%
Record high71° (2020)
Record low21° (2017)
Wed, 1148° / 37°0.11
48 °
Grosse Ile, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low37°
Average precipitation0.11 in
Chance of precipitation35%
Record high67° (1964)
Record low22° (2017)
Thu, 1246° / 35°0.07
46 °
Grosse Ile, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.07 in
Chance of precipitation25%
Record high67° (1964)
Record low12° (2019)
Fri, 1346° / 35°0.05
46 °
Grosse Ile, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.05 in
Chance of precipitation18%
Record high64° (1989)
Record low2° (2019)
Sat, 1446° / 35°0.09
46 °
Grosse Ile, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.09 in
Chance of precipitation28%
Record high61° (1973)
Record low17° (1986)
Sun, 1547° / 36°0.14
47 °
Grosse Ile, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.14 in
Chance of precipitation38%
Record high65° (2025)
Record low22° (1969)
Mon, 1646° / 34°0.07
46 °
Grosse Ile, Monday, 16 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.07 in
Chance of precipitation25%
Record high61° (1988)
Record low15° (2019)
Tue, 1745° / 35°0.08
45 °
Grosse Ile, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.08 in
Chance of precipitation38%
Record high63° (1963)
Record low18° (2019)
Wed, 1846° / 35°0.09
46 °
Grosse Ile, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.09 in
Chance of precipitation25%
Record high65° (2016)
Record low14° (2014)
Thu, 1947° / 35°0.07
47 °
Grosse Ile, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.07 in
Chance of precipitation33%
Record high63° (1985)
Record low15° (2014)
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 Grosse Ile, 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 Grosse Ile, 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.