Monthly outlook for Alvin, MI: average high 54.9°, average low 38.8°. That is 2.1° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 25 October (66.9°), the coolest 28 October (29.6°).
54.9°/38.8°
Average high / low
+2.1°
Above normal
0 / 5
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
56.6°
52.3°
+2.4°
29 October – 7 November
52.2°
48.7°
+1.9°
8 November – 17 November
at normal
43.8°
—
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).
Tue, 2062° / 45°0
62 °
Alvin, Tuesday, 20 October
Clear. High 62°, low 45°.
Pressure30.45 inHg
Wind6.9 mph E
Humidity66%
Visibility5.7 mi
Dew point47°
Wed, 2165° / 39°0
65 °
Alvin, Wednesday, 21 October
Clear. High 65°, low 39°.
Pressure30.27 inHg
Wind6.4 mph SW
Humidity70%
Visibility3.0 mi
Dew point48°
Thu, 2256° / 41°0
56 °
Alvin, Thursday, 22 October
Mostly clear. High 56°, low 41°.
Pressure30.36 inHg
Wind7 mph N
Humidity64%
Visibility6.2 mi
Dew point41°
Fri, 2353° / 40°0
53 °
Alvin, Friday, 23 October
Mostly clear. High 53°, low 40°.
Pressure30.47 inHg
Wind5.2 mph E
Humidity63%
Visibility6.2 mi
Dew point39°
Sat, 2457° / 37°0
57 °
Alvin, Saturday, 24 October
Clear. High 57°, low 37°.
Pressure30.50 inHg
Wind7.3 mph SW
Humidity41%
Visibility—
Dew point30°
Sun, 2567° / 42°0
67 °
Alvin, Sunday, 25 October
Overcast. High 67°, low 42°.
Pressure30.21 inHg
Wind13.1 mph SW
Humidity43%
Visibility—
Dew point41°
Mon, 2654° / 40°0
54 °
Alvin, Monday, 26 October
Clear. High 54°, low 40°.
Pressure30.21 inHg
Wind12.2 mph NW
Humidity33%
Visibility—
Dew point25°
Tue, 2744° / 34°0
44 °
Alvin, Tuesday, 27 October
Light rain. High 44°, low 34°.
Pressure30.33 inHg
Wind9.8 mph N
Humidity58%
Visibility—
Dew point29°
Wed, 2843° / 30°0
43 °
Alvin, Wednesday, 28 October
Partly cloudy. High 43°, low 30°.
Pressure30.30 inHg
Wind9.1 mph NW
Humidity36%
Visibility—
Dew point16°
Thu, 2950° / 31°0
50 °
Alvin, Thursday, 29 October
Mostly clear. High 50°, low 31°.
Pressure30.18 inHg
Wind10.6 mph W
Humidity37%
Visibility—
Dew point22°
Fri, 3052° / 34°0
52 °
Alvin, Friday, 30 October
Overcast. High 52°, low 34°.
Pressure30.18 inHg
Wind12 mph SW
Humidity37%
Visibility—
Dew point23°
Sat, 3159° / 40°0
59 °
Alvin, Saturday, 31 October
Partly cloudy. High 59°, low 40°.
Pressure29.97 inHg
Wind12.8 mph SW
Humidity45%
Visibility—
Dew point34°
Sun, 0159° / 42°0
59 °
Alvin, Sunday, 1 November
Overcast. High 59°, low 42°.
Pressure30.03 inHg
Wind9.8 mph SW
Humidity58%
Visibility—
Dew point42°
Mon, 0245° / 41°0.01
45 °
Alvin, Monday, 2 November
Light rain. High 45°, low 41°.
Pressure30.30 inHg
Wind12.2 mph NE
Humidity60%
Visibility—
Dew point31°
Tue, 0349° / 41°0.01
49 °
Alvin, Tuesday, 3 November
Light rain. High 49°, low 41°.
Pressure30.15 inHg
Wind8.6 mph NE
Humidity66%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 1543° / 37°0.1
43 °
Alvin, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high43°
Average low37°
Average precipitation0.1 in
Chance of precipitation35%
Record high58° (2023)
Record low22° (1967)
Mon, 1642° / 35°0.07
42 °
Alvin, Monday, 16 November
Climate normal for this date — 60-year average.
Average high42°
Average low35°
Average precipitation0.07 in
Chance of precipitation30%
Record high56° (2005)
Record low21° (2019)
Tue, 1743° / 36°0.06
43 °
Alvin, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high43°
Average low36°
Average precipitation0.06 in
Chance of precipitation25%
Record high57° (2023)
Record low22° (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 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.