Monthly outlook for Westchester Heights, MI: average high 81.1°, average low 57.9°. That is 1.7° above the climate normal for August. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 11 August (91.8°), the coolest 21 August (51.5°).
81.1°/57.9°
Average high / low
+1.7°
Above normal
3 / 5
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
81.9°
78.5°
+1.9°
19 August – 28 August
79.8°
78°
+1°
29 August – 7 September
at normal
76.4°
—
August records over 66 years
94.5°1 August 1988All-time high
42.1°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — St. Johns (10 mi).
Mon, 1089° / 69°0.19
89 °
Westchester Heights, Monday, 10 August
Rain. High 89°, low 69°.
Pressure29.88 inHg
Wind11.1 mph W
Humidity73%
Visibility6.2 mi
Dew point71°
Tue, 1192° / 61°0
92 °
Westchester Heights, Tuesday, 11 August
Mostly clear. High 92°, low 61°.
Pressure29.94 inHg
Wind8 mph SE
Humidity30%
Visibility6.2 mi
Dew point51°
Wed, 1291° / 61°0
91 °
Westchester Heights, Wednesday, 12 August
Mostly clear. High 91°, low 61°.
Pressure29.77 inHg
Wind8.4 mph N
Humidity48%
Visibility6.2 mi
Dew point60°
Thu, 1377° / 58°0
77 °
Westchester Heights, Thursday, 13 August
Overcast. High 77°, low 58°.
Pressure30.00 inHg
Wind5.7 mph NW
Humidity39%
Visibility6.2 mi
Dew point47°
Fri, 1480° / 53°0
80 °
Westchester Heights, Friday, 14 August
Partly cloudy. High 80°, low 53°.
Pressure30.15 inHg
Wind10.6 mph E
Humidity27%
Visibility—
Dew point38°
Sat, 1578° / 56°0
78 °
Westchester Heights, Saturday, 15 August
Overcast. High 78°, low 56°.
Pressure30.30 inHg
Wind6.7 mph SE
Humidity47%
Visibility—
Dew point46°
Sun, 1666° / 60°0.01
66 °
Westchester Heights, Sunday, 16 August
Light rain. High 66°, low 60°.
Pressure30.03 inHg
Wind10.2 mph SE
Humidity69%
Visibility—
Dew point54°
Mon, 1783° / 56°0
83 °
Westchester Heights, Monday, 17 August
Partly cloudy. High 83°, low 56°.
Pressure30.03 inHg
Wind9.5 mph NW
Humidity50%
Visibility—
Dew point52°
Tue, 1882° / 57°0
82 °
Westchester Heights, Tuesday, 18 August
Overcast. High 82°, low 57°.
Pressure29.91 inHg
Wind12.7 mph SW
Humidity35%
Visibility—
Dew point49°
Wed, 1984° / 61°0.2
84 °
Westchester Heights, Wednesday, 19 August
Rain. High 84°, low 61°.
Pressure29.65 inHg
Wind17.6 mph NW
Humidity42%
Visibility—
Dew point56°
Thu, 2078° / 53°0
78 °
Westchester Heights, Thursday, 20 August
Partly cloudy. High 78°, low 53°.
Pressure29.91 inHg
Wind8.4 mph N
Humidity31%
Visibility—
Dew point40°
Fri, 2178° / 52°0
78 °
Westchester Heights, Friday, 21 August
Overcast. High 78°, low 52°.
Pressure29.83 inHg
Wind9.5 mph W
Humidity41%
Visibility—
Dew point50°
Sat, 2283° / 63°0.21
83 °
Westchester Heights, Saturday, 22 August
Light rain. High 83°, low 63°.
Pressure29.68 inHg
Wind17.7 mph W
Humidity75%
Visibility—
Dew point66°
Sun, 2374° / 56°0
74 °
Westchester Heights, Sunday, 23 August
Mostly clear. High 74°, low 56°.
Pressure30.06 inHg
Wind14.5 mph N
Humidity35%
Visibility—
Dew point42°
Mon, 2483° / 52°0
83 °
Westchester Heights, Monday, 24 August
Mostly clear. High 83°, low 52°.
Pressure30.18 inHg
Wind7.7 mph W
Humidity28%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 62°0.05
78 °
Westchester Heights, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.05 in
Chance of precipitation22%
Record high91° (2021)
Record low46° (1977)
Wed, 2679° / 62°0.14
79 °
Westchester Heights, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.14 in
Chance of precipitation35%
Record high92° (2024)
Record low48° (2025)
Thu, 2779° / 63°0.11
79 °
Westchester Heights, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.11 in
Chance of precipitation40%
Record high92° (1973)
Record low47° (2025)
Fri, 2878° / 62°0.13
78 °
Westchester Heights, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.13 in
Chance of precipitation38%
Record high91° (1973)
Record low44° (1986)
Sat, 2977° / 61°0.11
77 °
Westchester Heights, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.11 in
Chance of precipitation38%
Record high91° (2021)
Record low42° (1982)
Sun, 3077° / 61°0.06
77 °
Westchester Heights, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.06 in
Chance of precipitation27%
Record high89° (2010)
Record low46° (1986)
Mon, 3177° / 60°0.1
77 °
Westchester Heights, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.1 in
Chance of precipitation17%
Record high89° (2010)
Record low46° (2009)
Tue, 0176° / 59°0.09
76 °
Westchester Heights, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.09 in
Chance of precipitation32%
Record high88° (1973)
Record low44° (1967)
Wed, 0277° / 60°0.07
77 °
Westchester Heights, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.07 in
Chance of precipitation30%
Record high90° (2011)
Record low46° (1976)
Thu, 0377° / 59°0.07
77 °
Westchester Heights, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.07 in
Chance of precipitation25%
Record high89° (1973)
Record low44° (1974)
Fri, 0476° / 58°0.06
76 °
Westchester Heights, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0.06 in
Chance of precipitation23%
Record high89° (2023)
Record low44° (1997)
Sat, 0576° / 59°0.07
76 °
Westchester Heights, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.07 in
Chance of precipitation25%
Record high91° (2023)
Record low45° (1974)
Sun, 0676° / 59°0.07
76 °
Westchester Heights, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.07 in
Chance of precipitation28%
Record high87° (2016)
Record low43° (1984)
Mon, 0775° / 59°0.12
75 °
Westchester Heights, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.12 in
Chance of precipitation35%
Record high89° (1960)
Record low44° (1986)
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 Westchester Heights, 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 Westchester Heights, 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.