Monthly outlook for Glenn, MI: average high 58.9°, average low 49.4°. That is 0.3° above the climate normal for October. Precipitation is expected on 10 days (about 3.1 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 10 October (73.1°), the coolest 18 October (37.4°).
58.9°/49.4°
Average high / low
+0.3°
Above normal
10 / 6
Wet days / normal
3.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
60.7°
59.6°
+0.6°
19 October – 28 October
55.7°
55.5°
+0.1°
29 October – 7 November
at normal
52°
—
October records over 66 years
81.9°8 October 2007All-time high
29.8°19 October 1972All-time low
Climate normals and records are computed from the nearest reference point — Fennville (8 mi).
Sat, 1073° / 52°0
73 °
Glenn, Saturday, 10 October
Overcast. High 73°, low 52°.
Pressure30.15 inHg
Wind16.6 mph S
Humidity67%
Visibility6.2 mi
Dew point53°
Sun, 1164° / 54°0.14
64 °
Glenn, Sunday, 11 October
Rain. High 64°, low 54°.
Pressure29.94 inHg
Wind5.5 mph E
Humidity89%
Visibility6.2 mi
Dew point58°
Mon, 1264° / 61°0.36
64 °
Glenn, Monday, 12 October
Rain. High 64°, low 61°.
Pressure29.83 inHg
Wind17.5 mph SW
Humidity84%
Visibility6.2 mi
Dew point57°
Tue, 1363° / 57°0.22
63 °
Glenn, Tuesday, 13 October
Rain. High 63°, low 57°.
Pressure29.80 inHg
Wind12.3 mph NW
Humidity99%
Visibility3.5 mi
Dew point60°
Wed, 1461° / 56°0
61 °
Glenn, Wednesday, 14 October
Overcast. High 61°, low 56°.
Pressure30.09 inHg
Wind12.9 mph N
Humidity79%
Visibility—
Dew point53°
Thu, 1562° / 50°0.18
62 °
Glenn, Thursday, 15 October
Rain. High 62°, low 50°.
Pressure30.06 inHg
Wind18.1 mph SE
Humidity52%
Visibility—
Dew point41°
Fri, 1658° / 47°1.11
58 °
Glenn, Friday, 16 October
Heavy rain. High 58°, low 47°.
Pressure29.74 inHg
Wind36.7 mph W
Humidity61%
Visibility—
Dew point39°
Sat, 1746° / 41°0.13
46 °
Glenn, Saturday, 17 October
Light rain. High 46°, low 41°.
Pressure30.18 inHg
Wind34.9 mph W
Humidity64%
Visibility—
Dew point34°
Sun, 1849° / 37°0
49 °
Glenn, Sunday, 18 October
Overcast. High 49°, low 37°.
Pressure30.36 inHg
Wind13.8 mph S
Humidity50%
Visibility—
Dew point29°
Mon, 1956° / 44°0
56 °
Glenn, Monday, 19 October
Overcast. High 56°, low 44°.
Pressure30.24 inHg
Wind18.5 mph SW
Humidity52%
Visibility—
Dew point35°
Tue, 2058° / 50°0
58 °
Glenn, Tuesday, 20 October
Clear. High 58°, low 50°.
Pressure30.36 inHg
Wind9.5 mph SE
Humidity62%
Visibility—
Dew point44°
Wed, 2161° / 51°0
61 °
Glenn, Wednesday, 21 October
Overcast. High 61°, low 51°.
Pressure30.27 inHg
Wind13.8 mph S
Humidity58%
Visibility—
Dew point44°
Thu, 2257° / 54°0.53
57 °
Glenn, Thursday, 22 October
Rain. High 57°, low 54°.
Pressure30.00 inHg
Wind21.9 mph S
Humidity82%
Visibility—
Dew point49°
Fri, 2357° / 45°0.17
57 °
Glenn, Friday, 23 October
Light rain. High 57°, low 45°.
Pressure29.88 inHg
Wind28 mph W
Humidity79%
Visibility—
Dew point41°
Sat, 2445° / 43°0.19
45 °
Glenn, Saturday, 24 October
Light rain. High 45°, low 43°.
Pressure30.09 inHg
Wind22.2 mph N
Humidity73%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2555° / 46°0.12
55 °
Glenn, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.12 in
Chance of precipitation40%
Record high72° (2012)
Record low31° (2025)
Mon, 2654° / 45°0.12
54 °
Glenn, Monday, 26 October
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.12 in
Chance of precipitation32%
Record high72° (1963)
Record low31° (1962)
Tue, 2754° / 45°0.1
54 °
Glenn, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.1 in
Chance of precipitation42%
Record high71° (2014)
Record low30° (1976)
Wed, 2854° / 44°0.09
54 °
Glenn, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.09 in
Chance of precipitation35%
Record high66° (1989)
Record low33° (1967)
Thu, 2953° / 44°0.06
53 °
Glenn, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.06 in
Chance of precipitation30%
Record high75° (2024)
Record low33° (1965)
Fri, 3055° / 44°0.09
55 °
Glenn, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.09 in
Chance of precipitation32%
Record high73° (2024)
Record low32° (1988)
Sat, 3154° / 44°0.13
54 °
Glenn, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.13 in
Chance of precipitation48%
Record high70° (1974)
Record low30° (2020)
Sun, 0153° / 44°0.16
53 °
Glenn, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.16 in
Chance of precipitation52%
Record high67° (1999)
Record low30° (2023)
Mon, 0252° / 43°0.14
52 °
Glenn, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.14 in
Chance of precipitation42%
Record high71° (1961)
Record low29° (2014)
Tue, 0351° / 42°0.08
51 °
Glenn, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.08 in
Chance of precipitation38%
Record high70° (1961)
Record low25° (1991)
Wed, 0451° / 43°0.1
51 °
Glenn, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.1 in
Chance of precipitation42%
Record high69° (2022)
Record low25° (1991)
Thu, 0551° / 42°0.15
51 °
Glenn, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.15 in
Chance of precipitation37%
Record high70° (2024)
Record low23° (1991)
Fri, 0651° / 41°0.1
51 °
Glenn, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.1 in
Chance of precipitation40%
Record high69° (1975)
Record low27° (1991)
Sat, 0749° / 41°0.06
49 °
Glenn, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low41°
Average precipitation0.06 in
Chance of precipitation32%
Record high67° (2020)
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 Glenn, 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 Glenn, 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.