Forest Hills weather in August

In August, Forest Hills sees average daytime highs of 79°F and overnight lows near 61°F, with 3.6 in of rain across 10.6 wet days and about 13.8 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 79°F through the month. The sky is clear or mostly clear about 34% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 14 h 24 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Forest Hills's 3rd-clearest and 12th-windiest month. For the whole year in context, see Forest Hills's year-round climate.

Daytime high
79°
2nd warmest
Overnight low
61°
11th coldest
Rainfall
3.6 in
10.6 wet days
Daylight
13 h 48 min
5:53 AM – 7:39 PM
Cloud cover
55%
3rd clearest
Wind
6 mph
12th windiest
Solar energy
5.26 kWh/m²
Travel score
6.7
out of 10

Forest Hills is unincorporated community in Kent County, Michigan, United States.

Density
197/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 79°F through the month.

A typical August day in Forest Hills reaches about 79°F in the afternoon and slips back to 61°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 86°F. Set against its neighbours, August runs about 2°F cooler than July and about 7°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18062
28062
38062
48062
58062
68062
78062
88062
98062
107961
117961
127961
137961
147961
157961
167961
177961
187961
197960
207860
217860
227860
237860
247860
257860
267860
277859
287859
297859
307759
317758

How August really feels in Forest Hills

Once humidity and wind are folded in, August averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Forest Hills weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan30° / 18°2.410.19.59.20.0
Feb33° / 18°2.07.86.410.20.0
Mar44° / 27°2.59.34.111.60.9
Apr57° / 38°4.0121.913.13.8
May68° / 49°4.211.9014.46.0
Jun78° / 59°3.911.5015.16.5
Jul81° / 63°3.611.1014.86.4
Aug79° / 61°3.610.6013.86.7
Sep72° / 53°3.19.5012.36.8
Oct59° / 42°3.310.90.310.84.5
Nov46° / 33°2.69.72.59.51.2
Dec35° / 24°2.310.27.88.90.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25743
35743
45743
55743
65743
75644
85545
95545
105545
115446
125446
135446
145446
155446
165446
175446
185347
195446
205347
215347
225446
235347
245446
255545
265545
275545
285644
295743
305743
315743

Chance of precipitation in August

Any precipitation

Forest Hills gets around 3.6 in of rain over 10.6 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
435
535
635
735
835
935
1035
1135
1235
1335
1435
1535
1635
1734
1834
1934
2033
2133
2233
2333
2432
2532
2632
2731
2831
2931
3031
3131

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the comfortable band about 28% of days. Sticky, muggy-or-worse air turns up on roughly 25% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1182827207
2192826207
3192926207
4192925207
5202925207
6202825207
7212824207
8212824216
9222724216
10222723216
11232723226
12232723225
13232723225
14232723225
15242723224
16242723224
17232724224
18232724223
19232724223
20232725223
21232725223
22232725223
23242824213
24242824213
25252824203
26262823203
27272823193
28282823193
29292822183
30302822173
31322821163

Wind in August

Winds average 6 mph in August, the calmest month.

Across August, daily wind ranges from about 6 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 24 min at the start of August to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over August. Sunrise moves from 5:37 AM to 6:10 AM, and sunset from 7:59 PM to 7:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.45:377:59
214.35:387:58
314.35:397:57
414.35:407:56
514.25:417:55
614.25:427:53
714.25:437:52
814.15:447:51
914.15:457:49
1014.05:467:48
1114.05:477:47
1213.95:487:45
1313.95:507:44
1413.95:517:42
1513.85:527:41
1613.85:537:39
1713.75:547:38
1813.75:557:36
1913.65:567:35
2013.65:577:33
2113.55:597:31
2213.56:007:30
2313.56:017:28
2413.46:027:26
2513.46:037:25
2613.36:047:23
2713.36:057:21
2813.26:067:20
2913.26:077:18
3013.16:097:16
3113.16:107:14

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.26 kWh/m².

For context, solar energy here swings from a low near 1.31 kWh/m² to a high of 6.35 kWh/m² in June across the year — August's 5.26 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.7Bright
45.7Bright
55.7Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.4Bright
115.4Bright
125.4Bright
135.3Bright
145.3Bright
155.3Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.1Bright
215.1Bright
225.1Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in August

Is August a good time to visit Forest Hills?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.7
Sightseeing
2nd-best month of the year
6.4
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Forest Hills for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Forest Hills in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Forest Hills sees daytime highs around 79°F and nights near 61°F. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Forest Hills in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Forest Hills peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 20UV 9Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr5High
May7Very high
Jun9Very high
Jul9Very high
Aug7Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Forest Hills?

Forest Hills sits at 43.0°N, 85.5°W, 630 ft above sea level, in United States. The nearest listed city is Grand Rapids, 9.3 mi away.

Topography around Forest Hills

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Forest Hills.

Within 2 miles, the terrain around Forest Hills has only modest variations in elevation — a maximum elevation change of 279 ft around an average of 725 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 433 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 810 ft.

The land around Forest Hills is covered by trees (75%) within 2 miles, trees (58%) within 10 miles, and trees (48%) and cropland (29%) within 50 miles.

2 miles
279 ft
10 miles
433 ft
50 miles
810 ft
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Grand Rapids 9.3 mi · Kentwood 9.9 mi · Wyoming 11 mi · Grandville 14 mi · Walker 14 mi · Jenison 16 mi · Allendale 24 mi · Holland 34 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Forest Hills (42.9595°, -85.4898°, elevation 630 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).