Monthly outlook for Cass City, MI: average high 82.2°, average low 59.6°. That is 2.9° above the climate normal for August. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 20 August (99.4°), the coolest 15 August (49.4°).
82.2°/59.6°
Average high / low
+2.9°
Above normal
3 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
78.9°
77.3°
+0.9°
19 August – 28 August
87.7°
76.6°
+6.1°
29 August – 7 September
at normal
75.3°
—
August records over 66 years
95.9°8 August 2001All-time high
40.3°29 August 1982All-time low
Mon, 1085° / 65°0.26
85 °
Cass City, Monday, 10 August
Rain. High 85°, low 65°.
Pressure29.88 inHg
Wind7.4 mph W
Humidity70%
Visibility6.2 mi
Dew point67°
Tue, 1182° / 60°0.01
82 °
Cass City, Tuesday, 11 August
Light rain. High 82°, low 60°.
Pressure29.91 inHg
Wind2.9 mph S
Humidity42%
Visibility6.2 mi
Dew point56°
Wed, 1280° / 58°0
80 °
Cass City, Wednesday, 12 August
Clear. High 80°, low 58°.
Pressure29.77 inHg
Wind10.8 mph NW
Humidity58%
Visibility6.2 mi
Dew point61°
Thu, 1370° / 55°0
70 °
Cass City, Thursday, 13 August
Clear. High 70°, low 55°.
Pressure30.00 inHg
Wind14.1 mph N
Humidity42%
Visibility—
Dew point44°
Fri, 1472° / 51°0
72 °
Cass City, Friday, 14 August
Clear. High 72°, low 51°.
Pressure30.15 inHg
Wind11.4 mph N
Humidity43%
Visibility—
Dew point45°
Sat, 1574° / 49°0
74 °
Cass City, Saturday, 15 August
Overcast. High 74°, low 49°.
Pressure30.30 inHg
Wind7 mph SE
Humidity37%
Visibility—
Dew point44°
Sun, 1678° / 55°0
78 °
Cass City, Sunday, 16 August
Overcast. High 78°, low 55°.
Pressure30.12 inHg
Wind9.6 mph SE
Humidity36%
Visibility—
Dew point44°
Mon, 1780° / 58°0
80 °
Cass City, Monday, 17 August
Overcast. High 80°, low 58°.
Pressure30.03 inHg
Wind10.2 mph N
Humidity46%
Visibility—
Dew point53°
Tue, 1883° / 57°0
83 °
Cass City, Tuesday, 18 August
Mostly clear. High 83°, low 57°.
Pressure30.03 inHg
Wind10.9 mph SE
Humidity31%
Visibility—
Dew point47°
Wed, 1993° / 63°0
93 °
Cass City, Wednesday, 19 August
Overcast. High 93°, low 63°.
Pressure29.97 inHg
Wind11.6 mph S
Humidity33%
Visibility—
Dew point54°
Thu, 2099° / 66°0.08
99 °
Cass City, Thursday, 20 August
Light rain. High 99°, low 66°.
Pressure29.74 inHg
Wind10.9 mph S
Humidity41%
Visibility—
Dew point63°
Fri, 2184° / 63°0.02
84 °
Cass City, Friday, 21 August
Light rain. High 84°, low 63°.
Pressure29.91 inHg
Wind12.4 mph N
Humidity45%
Visibility—
Dew point58°
Sat, 2290° / 60°0
90 °
Cass City, Saturday, 22 August
Clear. High 90°, low 60°.
Pressure29.94 inHg
Wind12.6 mph E
Humidity26%
Visibility—
Dew point47°
Sun, 2384° / 65°0.52
84 °
Cass City, Sunday, 23 August
Rain. High 84°, low 65°.
Pressure29.85 inHg
Wind17 mph NE
Humidity59%
Visibility—
Dew point66°
Mon, 2475° / 65°0
75 °
Cass City, Monday, 24 August
Light rain. High 75°, low 65°.
Pressure30.09 inHg
Wind12.1 mph NE
Humidity76%
Visibility—
Dew point60°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 62°0.08
77 °
Cass City, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.08 in
Chance of precipitation25%
Record high91° (2021)
Record low48° (1977)
Wed, 2678° / 62°0.14
78 °
Cass City, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.14 in
Chance of precipitation35%
Record high91° (2024)
Record low47° (2017)
Thu, 2777° / 63°0.12
77 °
Cass City, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high77°
Average low63°
Average precipitation0.12 in
Chance of precipitation42%
Record high93° (1973)
Record low48° (2025)
Fri, 2877° / 62°0.12
77 °
Cass City, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.12 in
Chance of precipitation37%
Record high93° (2021)
Record low45° (2023)
Sat, 2977° / 62°0.11
77 °
Cass City, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.11 in
Chance of precipitation35%
Record high91° (2021)
Record low40° (1982)
Sun, 3076° / 61°0.06
76 °
Cass City, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.06 in
Chance of precipitation22%
Record high90° (2010)
Record low45° (2025)
Mon, 3176° / 60°0.05
76 °
Cass City, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.05 in
Chance of precipitation18%
Record high90° (2010)
Record low47° (2009)
Tue, 0176° / 60°0.07
76 °
Cass City, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.07 in
Chance of precipitation25%
Record high89° (2010)
Record low45° (2009)
Wed, 0275° / 60°0.1
75 °
Cass City, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.1 in
Chance of precipitation37%
Record high91° (2011)
Record low47° (2017)
Thu, 0376° / 60°0.08
76 °
Cass City, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.08 in
Chance of precipitation30%
Record high89° (1973)
Record low48° (2024)
Fri, 0475° / 59°0.11
75 °
Cass City, Friday, 4 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.11 in
Chance of precipitation30%
Record high89° (1973)
Record low48° (1974)
Sat, 0575° / 59°0.08
75 °
Cass City, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.08 in
Chance of precipitation25%
Record high90° (2023)
Record low46° (1974)
Sun, 0675° / 59°0.07
75 °
Cass City, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.07 in
Chance of precipitation27%
Record high87° (2007)
Record low46° (1963)
Mon, 0774° / 59°0.11
74 °
Cass City, Monday, 7 September
Climate normal for this date — 60-year average.
Average high74°
Average low59°
Average precipitation0.11 in
Chance of precipitation42%
Record high89° (1960)
Record low44° (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 Cass City, 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 Cass City, 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.