Monthly outlook for Glenn Stores, MI: average high 73.3°, average low 63°. That is 2° below the climate normal for August. Precipitation is expected on 4 days (about 3.0 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 9 August (83.4°), the coolest 21 August (54.9°).
73.3°/63°
Average high / low
−2°
Below normal
4 / 6
Wet days / normal
3.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
74.8°
77.1°
-1.2°
18 August – 27 August
70.8°
76.7°
-3.3°
28 August – 6 September
at normal
75.4°
—
August records over 66 years
90.7°9 August 2025All-time high
46.8°29 August 2025All-time low
Climate normals and records are computed from the nearest reference point — South Haven (7 mi).
Sun, 0983° / 63°1.3
83 °
Glenn Stores, Sunday, 9 August
Heavy rain. High 83°, low 63°.
Pressure29.97 inHg
Wind12.6 mph SW
Humidity54%
Visibility6.2 mi
Dew point60°
Mon, 1082° / 69°0.51
82 °
Glenn Stores, Monday, 10 August
Rain. High 82°, low 69°.
Pressure29.94 inHg
Wind8.4 mph SW
Humidity93%
Visibility6.2 mi
Dew point70°
Tue, 1173° / 67°1.13
73 °
Glenn Stores, Tuesday, 11 August
Heavy rain. High 73°, low 67°.
Pressure29.74 inHg
Wind6.4 mph S
Humidity91%
Visibility6.2 mi
Dew point65°
Wed, 1272° / 66°0
72 °
Glenn Stores, Wednesday, 12 August
Overcast. High 72°, low 66°.
Pressure29.83 inHg
Wind7 mph NW
Humidity81%
Visibility6.2 mi
Dew point65°
Thu, 1367° / 59°0
67 °
Glenn Stores, Thursday, 13 August
Overcast. High 67°, low 59°.
Pressure30.03 inHg
Wind12.2 mph NE
Humidity55%
Visibility—
Dew point49°
Fri, 1471° / 61°0
71 °
Glenn Stores, Friday, 14 August
Clear. High 71°, low 61°.
Pressure30.12 inHg
Wind9.5 mph NW
Humidity69%
Visibility—
Dew point59°
Sat, 1574° / 59°0
74 °
Glenn Stores, Saturday, 15 August
Overcast. High 74°, low 59°.
Pressure30.27 inHg
Wind9.1 mph NE
Humidity50%
Visibility—
Dew point52°
Sun, 1672° / 61°0
72 °
Glenn Stores, Sunday, 16 August
Partly cloudy. High 72°, low 61°.
Pressure30.15 inHg
Wind8 mph W
Humidity69%
Visibility—
Dew point60°
Mon, 1772° / 66°0
72 °
Glenn Stores, Monday, 17 August
Partly cloudy. High 72°, low 66°.
Pressure30.06 inHg
Wind9.3 mph W
Humidity75%
Visibility—
Dew point63°
Tue, 1876° / 66°0
76 °
Glenn Stores, Tuesday, 18 August
Overcast. High 76°, low 66°.
Pressure29.97 inHg
Wind13.7 mph SW
Humidity80%
Visibility—
Dew point66°
Wed, 1971° / 66°0.04
71 °
Glenn Stores, Wednesday, 19 August
Light rain. High 71°, low 66°.
Pressure29.88 inHg
Wind24.1 mph N
Humidity78%
Visibility—
Dew point61°
Thu, 2067° / 64°0.02
67 °
Glenn Stores, Thursday, 20 August
Light rain. High 67°, low 64°.
Pressure30.03 inHg
Wind25.3 mph N
Humidity61%
Visibility—
Dew point53°
Fri, 2168° / 55°0
68 °
Glenn Stores, Friday, 21 August
Clear. High 68°, low 55°.
Pressure30.09 inHg
Wind10.3 mph NW
Humidity52%
Visibility—
Dew point48°
Sat, 2268° / 57°0.03
68 °
Glenn Stores, Saturday, 22 August
Light rain. High 68°, low 57°.
Pressure29.97 inHg
Wind17.7 mph SE
Humidity64%
Visibility—
Dew point52°
Sun, 2373° / 67°0
73 °
Glenn Stores, Sunday, 23 August
Overcast. High 73°, low 67°.
Pressure29.88 inHg
Wind20.4 mph W
Humidity68%
Visibility—
Dew point62°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2477° / 67°0.15
77 °
Glenn Stores, Monday, 24 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.15 in
Chance of precipitation37%
Record high87° (2021)
Record low56° (2017)
Tue, 2577° / 67°0.11
77 °
Glenn Stores, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.11 in
Chance of precipitation30%
Record high87° (2024)
Record low51° (2017)
Wed, 2677° / 68°0.12
77 °
Glenn Stores, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high77°
Average low68°
Average precipitation0.12 in
Chance of precipitation32%
Record high91° (2024)
Record low54° (2025)
Thu, 2777° / 68°0.14
77 °
Glenn Stores, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high77°
Average low68°
Average precipitation0.14 in
Chance of precipitation42%
Record high90° (2024)
Record low52° (2025)
Fri, 2876° / 67°0.18
76 °
Glenn Stores, Friday, 28 August
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.18 in
Chance of precipitation37%
Record high90° (2021)
Record low53° (2023)
Sat, 2976° / 67°0.12
76 °
Glenn Stores, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.12 in
Chance of precipitation38%
Record high86° (2021)
Record low47° (2025)
Sun, 3076° / 67°0.07
76 °
Glenn Stores, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.07 in
Chance of precipitation22%
Record high85° (2010)
Record low48° (2025)
Mon, 3176° / 65°0.09
76 °
Glenn Stores, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low65°
Average precipitation0.09 in
Chance of precipitation22%
Record high84° (1973)
Record low50° (2025)
Tue, 0176° / 66°0.13
76 °
Glenn Stores, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low66°
Average precipitation0.13 in
Chance of precipitation30%
Record high86° (2011)
Record low51° (2017)
Wed, 0276° / 66°0.07
76 °
Glenn Stores, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low66°
Average precipitation0.07 in
Chance of precipitation28%
Record high85° (2008)
Record low49° (2017)
Thu, 0375° / 66°0.08
75 °
Glenn Stores, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low66°
Average precipitation0.08 in
Chance of precipitation27%
Record high86° (1973)
Record low54° (2024)
Fri, 0474° / 65°0.08
74 °
Glenn Stores, Friday, 4 September
Climate normal for this date — 60-year average.
Average high74°
Average low65°
Average precipitation0.08 in
Chance of precipitation32%
Record high87° (2018)
Record low51° (2025)
Sat, 0574° / 65°0.09
74 °
Glenn Stores, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high74°
Average low65°
Average precipitation0.09 in
Chance of precipitation22%
Record high89° (2023)
Record low51° (2019)
Sun, 0674° / 65°0.1
74 °
Glenn Stores, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high74°
Average low65°
Average precipitation0.1 in
Chance of precipitation38%
Record high85° (1960)
Record low51° (2017)
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 Stores, 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 Stores, 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.