Monthly outlook for Alvin, MI: average high 57.8°, average low 43.5°. That is 3.2° above the climate normal for October. Precipitation is expected on 4 days (about 0.5 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 27 October (66.1°), the coolest 17 October (35.8°).
57.8°/43.5°
Average high / low
+3.2°
Above normal
4 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
57.9°
53.1°
+2.7°
26 October – 4 November
57.8°
49.8°
+4.4°
5 November – 14 November
at normal
45.1°
—
October records over 66 years
81.1°5 October 2025All-time high
27.5°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Au Sable (9 mi).
Sat, 1754° / 36°0
54 °
Alvin, Saturday, 17 October
Clear. High 54°, low 36°.
Pressure30.42 inHg
Wind6.2 mph SW
Humidity52%
Visibility6.2 mi
Dew point30°
Sun, 1864° / 41°0
64 °
Alvin, Sunday, 18 October
Clear. High 64°, low 41°.
Pressure30.36 inHg
Wind12.8 mph SW
Humidity49%
Visibility6.2 mi
Dew point38°
Mon, 1966° / 42°0
66 °
Alvin, Monday, 19 October
Clear. High 66°, low 42°.
Pressure30.39 inHg
Wind5.1 mph SW
Humidity53%
Visibility6.2 mi
Dew point42°
Tue, 2062° / 42°0
62 °
Alvin, Tuesday, 20 October
Clear. High 62°, low 42°.
Pressure30.42 inHg
Wind2.7 mph NE
Humidity66%
Visibility6.2 mi
Dew point45°
Wed, 2162° / 46°0
62 °
Alvin, Wednesday, 21 October
Partly cloudy. High 62°, low 46°.
Pressure30.36 inHg
Wind5.5 mph SW
Humidity64%
Visibility—
Dew point47°
Thu, 2257° / 43°0
57 °
Alvin, Thursday, 22 October
Overcast. High 57°, low 43°.
Pressure30.06 inHg
Wind10.8 mph SW
Humidity54%
Visibility—
Dew point38°
Fri, 2349° / 41°0
49 °
Alvin, Friday, 23 October
Overcast. High 49°, low 41°.
Pressure30.33 inHg
Wind11.5 mph N
Humidity64%
Visibility—
Dew point37°
Sat, 2454° / 41°0
54 °
Alvin, Saturday, 24 October
Overcast. High 54°, low 41°.
Pressure30.39 inHg
Wind7.8 mph SE
Humidity46%
Visibility—
Dew point32°
Sun, 2557° / 40°0
57 °
Alvin, Sunday, 25 October
Overcast. High 57°, low 40°.
Pressure30.27 inHg
Wind8 mph S
Humidity48%
Visibility—
Dew point36°
Mon, 2660° / 47°0
60 °
Alvin, Monday, 26 October
Overcast. High 60°, low 47°.
Pressure30.21 inHg
Wind7 mph SE
Humidity51%
Visibility—
Dew point40°
Tue, 2766° / 47°0
66 °
Alvin, Tuesday, 27 October
Overcast. High 66°, low 47°.
Pressure30.06 inHg
Wind10.2 mph SW
Humidity46%
Visibility—
Dew point43°
Wed, 2850° / 47°0.08
50 °
Alvin, Wednesday, 28 October
Light rain. High 50°, low 47°.
Pressure30.21 inHg
Wind4.8 mph W
Humidity89%
Visibility—
Dew point46°
Thu, 2957° / 48°0.2
57 °
Alvin, Thursday, 29 October
Light rain. High 57°, low 48°.
Pressure30.12 inHg
Wind9.4 mph S
Humidity96%
Visibility—
Dew point50°
Fri, 3062° / 52°0.02
62 °
Alvin, Friday, 30 October
Light rain. High 62°, low 52°.
Pressure29.97 inHg
Wind11.1 mph W
Humidity60%
Visibility—
Dew point47°
Sat, 3152° / 43°0.06
52 °
Alvin, Saturday, 31 October
Light rain. High 52°, low 43°.
Pressure30.36 inHg
Wind12.6 mph N
Humidity80%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0149° / 43°0.12
49 °
Alvin, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low43°
Average precipitation0.12 in
Chance of precipitation42%
Record high62° (2022)
Record low28° (2023)
Mon, 0249° / 42°0.12
49 °
Alvin, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low42°
Average precipitation0.12 in
Chance of precipitation35%
Record high61° (1971)
Record low29° (2020)
Tue, 0348° / 41°0.06
48 °
Alvin, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low41°
Average precipitation0.06 in
Chance of precipitation28%
Record high62° (1961)
Record low28° (1991)
Wed, 0448° / 41°0.08
48 °
Alvin, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low41°
Average precipitation0.08 in
Chance of precipitation30%
Record high63° (2022)
Record low26° (1991)
Thu, 0548° / 41°0.1
48 °
Alvin, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low41°
Average precipitation0.1 in
Chance of precipitation27%
Record high65° (2024)
Record low27° (1991)
Fri, 0648° / 40°0.12
48 °
Alvin, Friday, 6 November
Climate normal for this date — 60-year average.
Average high48°
Average low40°
Average precipitation0.12 in
Chance of precipitation35%
Record high63° (2020)
Record low25° (1991)
Sat, 0746° / 39°0.05
46 °
Alvin, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high46°
Average low39°
Average precipitation0.05 in
Chance of precipitation22%
Record high62° (2020)
Record low24° (1991)
Sun, 0846° / 39°0.06
46 °
Alvin, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low39°
Average precipitation0.06 in
Chance of precipitation25%
Record high61° (2020)
Record low22° (2019)
Mon, 0946° / 39°0.08
46 °
Alvin, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low39°
Average precipitation0.08 in
Chance of precipitation40%
Record high65° (2020)
Record low20° (2017)
Tue, 1046° / 39°0.09
46 °
Alvin, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low39°
Average precipitation0.09 in
Chance of precipitation33%
Record high65° (2020)
Record low17° (2017)
Wed, 1144° / 37°0.09
44 °
Alvin, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low37°
Average precipitation0.09 in
Chance of precipitation35%
Record high62° (2020)
Record low22° (2017)
Thu, 1243° / 36°0.05
43 °
Alvin, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low36°
Average precipitation0.05 in
Chance of precipitation22%
Record high59° (1964)
Record low15° (2019)
Fri, 1343° / 36°0.05
43 °
Alvin, Friday, 13 November
Climate normal for this date — 60-year average.
Average high43°
Average low36°
Average precipitation0.05 in
Chance of precipitation32%
Record high56° (2005)
Record low14° (2019)
Sat, 1443° / 36°0.04
43 °
Alvin, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high43°
Average low36°
Average precipitation0.04 in
Chance of precipitation23%
Record high57° (1994)
Record low21° (1986)
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 Alvin, 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 Alvin, 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.