Monthly outlook for Diamond Springs, MI: average high 79.3°, average low 58.5°. That is 1.2° above the climate normal for August. Precipitation is expected on 4 days (about 1.6 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 11 August (88.4°), the coolest 20 August (52.8°).
79.3°/58.5°
Average high / low
+1.2°
Above normal
4 / 6
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.2°
77.3°
+1.6°
19 August – 28 August
77.7°
77°
+0.4°
29 August – 7 September
at normal
75.3°
—
August records over 66 years
90.5°4 August 2012All-time high
47.7°29 August 2025All-time low
Climate normals and records are computed from the nearest reference point — Fennville (12 mi).
Mon, 1087° / 70°0.43
87 °
Diamond Springs, Monday, 10 August
Rain. High 87°, low 70°.
Pressure29.91 inHg
Wind9.7 mph SW
Humidity75%
Visibility6.2 mi
Dew point72°
Tue, 1188° / 62°0.02
88 °
Diamond Springs, Tuesday, 11 August
Light rain. High 88°, low 62°.
Pressure29.91 inHg
Wind14.2 mph S
Humidity47%
Visibility6.2 mi
Dew point60°
Wed, 1285° / 63°0
85 °
Diamond Springs, Wednesday, 12 August
Mostly clear. High 85°, low 63°.
Pressure29.80 inHg
Wind7.6 mph N
Humidity50%
Visibility6.2 mi
Dew point62°
Thu, 1376° / 60°0
76 °
Diamond Springs, Thursday, 13 August
Overcast. High 76°, low 60°.
Pressure30.00 inHg
Wind6.1 mph NE
Humidity46%
Visibility—
Dew point52°
Fri, 1481° / 55°0
81 °
Diamond Springs, Friday, 14 August
Partly cloudy. High 81°, low 55°.
Pressure30.15 inHg
Wind10.9 mph NE
Humidity33%
Visibility—
Dew point44°
Sat, 1576° / 58°0
76 °
Diamond Springs, Saturday, 15 August
Overcast. High 76°, low 58°.
Pressure30.30 inHg
Wind11.2 mph SE
Humidity38%
Visibility—
Dew point46°
Sun, 1672° / 61°0.02
72 °
Diamond Springs, Sunday, 16 August
Light rain. High 72°, low 61°.
Pressure30.00 inHg
Wind9.3 mph SE
Humidity84%
Visibility—
Dew point61°
Mon, 1778° / 56°0
78 °
Diamond Springs, Monday, 17 August
Overcast. High 78°, low 56°.
Pressure30.06 inHg
Wind13.8 mph NW
Humidity43%
Visibility—
Dew point51°
Tue, 1878° / 57°0
78 °
Diamond Springs, Tuesday, 18 August
Overcast. High 78°, low 57°.
Pressure29.91 inHg
Wind11.5 mph SW
Humidity63%
Visibility—
Dew point57°
Wed, 1977° / 58°0.11
77 °
Diamond Springs, Wednesday, 19 August
Light rain. High 77°, low 58°.
Pressure29.74 inHg
Wind17.7 mph NW
Humidity60%
Visibility—
Dew point60°
Thu, 2075° / 53°0
75 °
Diamond Springs, Thursday, 20 August
Overcast. High 75°, low 53°.
Pressure29.94 inHg
Wind12.1 mph NW
Humidity35%
Visibility—
Dew point42°
Fri, 2179° / 53°0.02
79 °
Diamond Springs, Friday, 21 August
Light rain. High 79°, low 53°.
Pressure29.83 inHg
Wind12 mph S
Humidity62%
Visibility—
Dew point58°
Sat, 2278° / 62°0.14
78 °
Diamond Springs, Saturday, 22 August
Light rain. High 78°, low 62°.
Pressure29.74 inHg
Wind16.8 mph NW
Humidity60%
Visibility—
Dew point61°
Sun, 2377° / 55°0
77 °
Diamond Springs, Sunday, 23 August
Clear. High 77°, low 55°.
Pressure30.09 inHg
Wind17.3 mph NW
Humidity38%
Visibility—
Dew point47°
Mon, 2481° / 53°0
81 °
Diamond Springs, Monday, 24 August
Clear. High 81°, low 53°.
Pressure30.18 inHg
Wind11.6 mph W
Humidity35%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 66°0.1
77 °
Diamond Springs, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low66°
Average precipitation0.1 in
Chance of precipitation30%
Record high86° (2012)
Record low52° (2017)
Wed, 2678° / 66°0.1
78 °
Diamond Springs, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low66°
Average precipitation0.1 in
Chance of precipitation32%
Record high89° (2024)
Record low54° (2017)
Thu, 2777° / 66°0.15
77 °
Diamond Springs, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high77°
Average low66°
Average precipitation0.15 in
Chance of precipitation43%
Record high88° (2024)
Record low52° (2025)
Fri, 2877° / 66°0.19
77 °
Diamond Springs, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low66°
Average precipitation0.19 in
Chance of precipitation40%
Record high87° (2021)
Record low51° (1986)
Sat, 2976° / 65°0.14
76 °
Diamond Springs, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high76°
Average low65°
Average precipitation0.14 in
Chance of precipitation40%
Record high87° (1984)
Record low48° (2025)
Sun, 3076° / 65°0.07
76 °
Diamond Springs, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low65°
Average precipitation0.07 in
Chance of precipitation23%
Record high86° (2010)
Record low48° (2025)
Mon, 3176° / 64°0.09
76 °
Diamond Springs, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low64°
Average precipitation0.09 in
Chance of precipitation18%
Record high86° (2010)
Record low50° (2025)
Tue, 0176° / 64°0.13
76 °
Diamond Springs, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low64°
Average precipitation0.13 in
Chance of precipitation30%
Record high88° (2011)
Record low51° (2017)
Wed, 0276° / 64°0.09
76 °
Diamond Springs, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low64°
Average precipitation0.09 in
Chance of precipitation27%
Record high87° (2008)
Record low48° (2017)
Thu, 0376° / 64°0.08
76 °
Diamond Springs, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low64°
Average precipitation0.08 in
Chance of precipitation27%
Record high87° (1973)
Record low50° (1974)
Fri, 0474° / 63°0.07
74 °
Diamond Springs, Friday, 4 September
Climate normal for this date — 60-year average.
Average high74°
Average low63°
Average precipitation0.07 in
Chance of precipitation30%
Record high87° (1999)
Record low51° (2025)
Sat, 0575° / 63°0.08
75 °
Diamond Springs, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low63°
Average precipitation0.08 in
Chance of precipitation23%
Record high88° (2023)
Record low52° (2019)
Sun, 0674° / 63°0.11
74 °
Diamond Springs, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high74°
Average low63°
Average precipitation0.11 in
Chance of precipitation35%
Record high86° (1990)
Record low51° (2011)
Mon, 0774° / 63°0.12
74 °
Diamond Springs, Monday, 7 September
Climate normal for this date — 60-year average.
Average high74°
Average low63°
Average precipitation0.12 in
Chance of precipitation32%
Record high87° (1960)
Record low48° (2025)
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 Diamond Springs, 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 Diamond Springs, 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.