Monthly outlook for Detroit, MI: average high 82.7°, average low 65°. That is 2° above the climate normal for August. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 23 August (90.5°), the coolest 22 August (59.9°).
82.7°/65°
Average high / low
+2°
Above normal
4 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.4°
79.6°
+2.1°
19 August – 28 August
81.4°
78.7°
+1.5°
29 August – 7 September
at normal
77.3°
—
August records over 66 years
97.7°17 August 1988All-time high
45.9°22 August 2024All-time low
Mon, 1088° / 72°0.33
88 °
Detroit, Monday, 10 August
Rain. High 88°, low 72°.
Pressure29.91 inHg
Wind6.3 mph W
Humidity78%
Visibility6.2 mi
Dew point70°
Tue, 1179° / 69°0.54
79 °
Detroit, Tuesday, 11 August
Heavy rain. High 79°, low 69°.
Pressure29.85 inHg
Wind8.6 mph S
Humidity75%
Visibility6.2 mi
Dew point68°
Wed, 1286° / 64°0.01
86 °
Detroit, Wednesday, 12 August
Light rain. High 86°, low 64°.
Pressure29.77 inHg
Wind4.3 mph NW
Humidity51%
Visibility6.2 mi
Dew point61°
Thu, 1374° / 62°0
74 °
Detroit, Thursday, 13 August
Overcast. High 74°, low 62°.
Pressure30.00 inHg
Wind8.9 mph N
Humidity30%
Visibility—
Dew point39°
Fri, 1481° / 61°0
81 °
Detroit, Friday, 14 August
Clear. High 81°, low 61°.
Pressure30.06 inHg
Wind8.7 mph NW
Humidity28%
Visibility—
Dew point42°
Sat, 1579° / 63°0
79 °
Detroit, Saturday, 15 August
Overcast. High 79°, low 63°.
Pressure30.27 inHg
Wind6.2 mph NE
Humidity31%
Visibility—
Dew point44°
Sun, 1682° / 63°0
82 °
Detroit, Sunday, 16 August
Partly cloudy. High 82°, low 63°.
Pressure30.15 inHg
Wind8.7 mph S
Humidity29%
Visibility—
Dew point44°
Mon, 1785° / 67°0
85 °
Detroit, Monday, 17 August
Overcast. High 85°, low 67°.
Pressure30.00 inHg
Wind6.3 mph SW
Humidity36%
Visibility—
Dew point53°
Tue, 1889° / 68°0
89 °
Detroit, Tuesday, 18 August
Mostly clear. High 89°, low 68°.
Pressure29.97 inHg
Wind9.1 mph SW
Humidity33%
Visibility—
Dew point53°
Wed, 1979° / 66°0.04
79 °
Detroit, Wednesday, 19 August
Light rain. High 79°, low 66°.
Pressure29.80 inHg
Wind12.9 mph NW
Humidity74%
Visibility—
Dew point65°
Thu, 2080° / 63°0
80 °
Detroit, Thursday, 20 August
Overcast. High 80°, low 63°.
Pressure29.88 inHg
Wind10.8 mph NW
Humidity39%
Visibility—
Dew point48°
Fri, 2178° / 61°0
78 °
Detroit, Friday, 21 August
Partly cloudy. High 78°, low 61°.
Pressure30.03 inHg
Wind11.2 mph NE
Humidity21%
Visibility—
Dew point33°
Sat, 2278° / 60°0.01
78 °
Detroit, Saturday, 22 August
Light rain. High 78°, low 60°.
Pressure29.97 inHg
Wind10.4 mph S
Humidity30%
Visibility—
Dew point42°
Sun, 2391° / 67°0
91 °
Detroit, Sunday, 23 August
Clear. High 91°, low 67°.
Pressure29.77 inHg
Wind17.3 mph W
Humidity36%
Visibility—
Dew point57°
Mon, 2484° / 67°0
84 °
Detroit, Monday, 24 August
Mostly clear. High 84°, low 67°.
Pressure30.00 inHg
Wind9.7 mph NW
Humidity25%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2579° / 63°0.06
79 °
Detroit, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.06 in
Chance of precipitation18%
Record high92° (2021)
Record low50° (2017)
Wed, 2680° / 64°0.13
80 °
Detroit, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation33%
Record high92° (2024)
Record low49° (2017)
Thu, 2780° / 64°0.13
80 °
Detroit, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation33%
Record high94° (1973)
Record low51° (2025)
Fri, 2879° / 64°0.14
79 °
Detroit, Friday, 28 August
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.14 in
Chance of precipitation40%
Record high94° (1973)
Record low48° (1986)
Sat, 2978° / 63°0.1
78 °
Detroit, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.1 in
Chance of precipitation30%
Record high91° (1973)
Record low47° (1986)
Sun, 3078° / 62°0.07
78 °
Detroit, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.07 in
Chance of precipitation28%
Record high91° (1991)
Record low47° (2025)
Mon, 3177° / 62°0.06
77 °
Detroit, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.06 in
Chance of precipitation17%
Record high92° (2012)
Record low47° (2023)
Tue, 0177° / 62°0.08
77 °
Detroit, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.08 in
Chance of precipitation23%
Record high91° (2010)
Record low48° (1967)
Wed, 0278° / 62°0.06
78 °
Detroit, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.06 in
Chance of precipitation38%
Record high94° (2011)
Record low48° (1994)
Thu, 0378° / 61°0.06
78 °
Detroit, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.06 in
Chance of precipitation23%
Record high93° (2011)
Record low47° (2024)
Fri, 0477° / 61°0.06
77 °
Detroit, Friday, 4 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.06 in
Chance of precipitation30%
Record high91° (2023)
Record low48° (1974)
Sat, 0577° / 61°0.04
77 °
Detroit, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.04 in
Chance of precipitation15%
Record high90° (2014)
Record low48° (1997)
Sun, 0676° / 61°0.06
76 °
Detroit, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.06 in
Chance of precipitation22%
Record high91° (1998)
Record low47° (1988)
Mon, 0776° / 60°0.14
76 °
Detroit, Monday, 7 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.14 in
Chance of precipitation38%
Record high88° (2015)
Record low46° (1988)
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 Detroit, 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 Detroit, 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.