Monthly outlook for River Rouge, MI: average high 79.4°, average low 63.6°. That is 0.1° above the climate normal for August. Precipitation is expected on 5 days (about 3.3 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 9 August (92.1°), the coolest 23 August (52.6°).
79.4°/63.6°
Average high / low
+0.1°
Above normal
5 / 5
Wet days / normal
3.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
81.6°
79.8°
+1°
18 August – 27 August
75.8°
78.7°
-1.6°
28 August – 6 September
at normal
77.5°
—
August records over 66 years
97.7°17 August 1988All-time high
45.9°22 August 2024All-time low
Climate normals and records are computed from the nearest reference point — Detroit (8 mi).
Sun, 0992° / 68°0.01
92 °
River Rouge, Sunday, 9 August
Light rain. High 92°, low 68°.
Pressure30.00 inHg
Wind7.9 mph S
Humidity42%
Visibility6.2 mi
Dew point57°
Mon, 1091° / 70°0.63
91 °
River Rouge, Monday, 10 August
Rain. High 91°, low 70°.
Pressure29.91 inHg
Wind10 mph W
Humidity80%
Visibility6.2 mi
Dew point72°
Tue, 1179° / 65°1.87
79 °
River Rouge, Tuesday, 11 August
Heavy rain. High 79°, low 65°.
Pressure29.85 inHg
Wind9.4 mph SW
Humidity87%
Visibility6.2 mi
Dew point72°
Wed, 1286° / 66°0
86 °
River Rouge, Wednesday, 12 August
Mostly clear. High 86°, low 66°.
Pressure29.80 inHg
Wind3.6 mph NW
Humidity61%
Visibility6.2 mi
Dew point65°
Thu, 1374° / 62°0.02
74 °
River Rouge, Thursday, 13 August
Light rain. High 74°, low 62°.
Pressure29.97 inHg
Wind10.3 mph N
Humidity71%
Visibility—
Dew point55°
Fri, 1475° / 61°0
75 °
River Rouge, Friday, 14 August
Clear. High 75°, low 61°.
Pressure30.09 inHg
Wind7.7 mph N
Humidity34%
Visibility—
Dew point41°
Sat, 1574° / 59°0
74 °
River Rouge, Saturday, 15 August
Overcast. High 74°, low 59°.
Pressure30.30 inHg
Wind7.9 mph SW
Humidity41%
Visibility—
Dew point47°
Sun, 1677° / 60°0
77 °
River Rouge, Sunday, 16 August
Partly cloudy. High 77°, low 60°.
Pressure30.27 inHg
Wind9.4 mph S
Humidity41%
Visibility—
Dew point49°
Mon, 1781° / 62°0.01
81 °
River Rouge, Monday, 17 August
Light rain. High 81°, low 62°.
Pressure30.03 inHg
Wind8.9 mph SW
Humidity44%
Visibility—
Dew point55°
Tue, 1885° / 69°0.06
85 °
River Rouge, Tuesday, 18 August
Light rain. High 85°, low 69°.
Pressure29.97 inHg
Wind9.1 mph N
Humidity36%
Visibility—
Dew point52°
Wed, 1978° / 65°0
78 °
River Rouge, Wednesday, 19 August
Overcast. High 78°, low 65°.
Pressure30.00 inHg
Wind5.8 mph SE
Humidity48%
Visibility—
Dew point52°
Thu, 2075° / 64°0.37
75 °
River Rouge, Thursday, 20 August
Rain. High 75°, low 64°.
Pressure29.88 inHg
Wind8.4 mph NE
Humidity70%
Visibility—
Dew point62°
Fri, 2181° / 64°0.01
81 °
River Rouge, Friday, 21 August
Light rain. High 81°, low 64°.
Pressure29.88 inHg
Wind7 mph NE
Humidity43%
Visibility—
Dew point55°
Sat, 2264° / 59°0.29
64 °
River Rouge, Saturday, 22 August
Rain. High 64°, low 59°.
Pressure29.91 inHg
Wind7.4 mph N
Humidity95%
Visibility—
Dew point59°
Sun, 2371° / 53°0
71 °
River Rouge, Sunday, 23 August
Mostly clear. High 71°, low 53°.
Pressure30.21 inHg
Wind10 mph N
Humidity49%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2479° / 63°0.07
79 °
River Rouge, Monday, 24 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.07 in
Chance of precipitation27%
Record high92° (1968)
Record low50° (1971)
Tue, 2579° / 63°0.06
79 °
River Rouge, 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 °
River Rouge, 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 °
River Rouge, 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 °
River Rouge, 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 °
River Rouge, 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 °
River Rouge, 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 °
River Rouge, 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 °
River Rouge, 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 °
River Rouge, 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 °
River Rouge, 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 °
River Rouge, 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 °
River Rouge, 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 °
River Rouge, 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)
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 River Rouge, 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 River Rouge, 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.