Monthly outlook for East Grand Rapids, MI: average high 78.9°, average low 58.9°. That is 0.3° above the climate normal for August. Precipitation is expected on 3 days (about 1.6 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 10 August (86.6°), the coolest 21 August (49.8°).
78.9°/58.9°
Average high / low
+0.3°
Above normal
3 / 5
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.6°
78.6°
+1.1°
19 August – 28 August
76.1°
78.1°
-1.1°
29 August – 7 September
at normal
76.4°
—
August records over 66 years
93.6°9 August 2025All-time high
45.5°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Wyoming (6 mi).
Mon, 1087° / 69°0.17
87 °
East Grand Rapids, Monday, 10 August
Rain. High 87°, low 69°.
Pressure29.94 inHg
Wind6.3 mph NW
Humidity69%
Visibility6.2 mi
Dew point68°
Tue, 1178° / 65°1.02
78 °
East Grand Rapids, Tuesday, 11 August
Heavy rain. High 78°, low 65°.
Pressure29.74 inHg
Wind8.7 mph SW
Humidity94%
Visibility5.0 mi
Dew point67°
Wed, 1282° / 62°0
82 °
East Grand Rapids, Wednesday, 12 August
Partly cloudy. High 82°, low 62°.
Pressure29.80 inHg
Wind6.4 mph NW
Humidity62%
Visibility6.2 mi
Dew point64°
Thu, 1372° / 55°0
72 °
East Grand Rapids, Thursday, 13 August
Overcast. High 72°, low 55°.
Pressure30.03 inHg
Wind10.8 mph NW
Humidity42%
Visibility—
Dew point46°
Fri, 1478° / 54°0
78 °
East Grand Rapids, Friday, 14 August
Clear. High 78°, low 54°.
Pressure30.09 inHg
Wind14.1 mph NW
Humidity35%
Visibility—
Dew point46°
Sat, 1578° / 55°0
78 °
East Grand Rapids, Saturday, 15 August
Overcast. High 78°, low 55°.
Pressure30.27 inHg
Wind7.2 mph NE
Humidity39%
Visibility—
Dew point48°
Sun, 1681° / 56°0
81 °
East Grand Rapids, Sunday, 16 August
Partly cloudy. High 81°, low 56°.
Pressure30.12 inHg
Wind8.1 mph W
Humidity40%
Visibility—
Dew point51°
Mon, 1781° / 62°0
81 °
East Grand Rapids, Monday, 17 August
Partly cloudy. High 81°, low 62°.
Pressure30.00 inHg
Wind11.8 mph W
Humidity49%
Visibility—
Dew point58°
Tue, 1885° / 62°0
85 °
East Grand Rapids, Tuesday, 18 August
Light rain. High 85°, low 62°.
Pressure29.94 inHg
Wind12.5 mph SW
Humidity46%
Visibility—
Dew point59°
Wed, 1972° / 63°0.02
72 °
East Grand Rapids, Wednesday, 19 August
Light rain. High 72°, low 63°.
Pressure29.83 inHg
Wind18.6 mph NW
Humidity69%
Visibility—
Dew point58°
Thu, 2076° / 57°0.01
76 °
East Grand Rapids, Thursday, 20 August
Light rain. High 76°, low 57°.
Pressure29.97 inHg
Wind14.3 mph NW
Humidity40%
Visibility—
Dew point47°
Fri, 2177° / 50°0
77 °
East Grand Rapids, Friday, 21 August
Clear. High 77°, low 50°.
Pressure30.06 inHg
Wind7.5 mph NE
Humidity28%
Visibility—
Dew point37°
Sat, 2271° / 52°0.01
71 °
East Grand Rapids, Saturday, 22 August
Light rain. High 71°, low 52°.
Pressure29.94 inHg
Wind13.2 mph S
Humidity45%
Visibility—
Dew point46°
Sun, 2380° / 62°0.02
80 °
East Grand Rapids, Sunday, 23 August
Light rain. High 80°, low 62°.
Pressure29.83 inHg
Wind20.7 mph W
Humidity39%
Visibility—
Dew point51°
Mon, 2480° / 57°0
80 °
East Grand Rapids, Monday, 24 August
Overcast. High 80°, low 57°.
Pressure30.00 inHg
Wind8.8 mph NW
Humidity37%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 63°0.08
78 °
East Grand Rapids, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.08 in
Chance of precipitation25%
Record high89° (2012)
Record low50° (1977)
Wed, 2679° / 64°0.11
79 °
East Grand Rapids, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.11 in
Chance of precipitation33%
Record high92° (2024)
Record low52° (2025)
Thu, 2778° / 64°0.13
78 °
East Grand Rapids, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.13 in
Chance of precipitation40%
Record high91° (2024)
Record low51° (1968)
Fri, 2878° / 63°0.13
78 °
East Grand Rapids, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.13 in
Chance of precipitation33%
Record high89° (2021)
Record low46° (1986)
Sat, 2977° / 62°0.15
77 °
East Grand Rapids, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.15 in
Chance of precipitation42%
Record high90° (1984)
Record low46° (1965)
Sun, 3077° / 62°0.06
77 °
East Grand Rapids, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.06 in
Chance of precipitation25%
Record high88° (2010)
Record low47° (1976)
Mon, 3177° / 61°0.1
77 °
East Grand Rapids, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.1 in
Chance of precipitation23%
Record high88° (2010)
Record low47° (2009)
Tue, 0177° / 60°0.1
77 °
East Grand Rapids, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.1 in
Chance of precipitation32%
Record high89° (2011)
Record low46° (1967)
Wed, 0277° / 61°0.08
77 °
East Grand Rapids, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.08 in
Chance of precipitation25%
Record high91° (2008)
Record low47° (2017)
Thu, 0377° / 61°0.1
77 °
East Grand Rapids, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.1 in
Chance of precipitation33%
Record high89° (1973)
Record low44° (1974)
Fri, 0475° / 60°0.08
75 °
East Grand Rapids, Friday, 4 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.08 in
Chance of precipitation25%
Record high88° (1999)
Record low44° (1997)
Sat, 0576° / 60°0.07
76 °
East Grand Rapids, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.07 in
Chance of precipitation27%
Record high89° (2023)
Record low47° (1974)
Sun, 0675° / 60°0.12
75 °
East Grand Rapids, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.12 in
Chance of precipitation28%
Record high87° (2015)
Record low44° (1962)
Mon, 0775° / 60°0.11
75 °
East Grand Rapids, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.11 in
Chance of precipitation38%
Record high89° (1960)
Record low48° (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 East Grand Rapids, 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 East Grand Rapids, 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.