Allendale weather in August

In August, Allendale sees average daytime highs of 77°F and overnight lows near 64°F, with 3.8 in of rain across 10.3 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 77°F through the month. The sky is clear or mostly clear about 41% of the time in August, and the air most often feels humid.

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 Allendale's 2nd-clearest and 12th-windiest month. For the whole year in context, see Allendale's year-round climate.

Daytime high
77°
2nd warmest
Overnight low
64°
11th coldest
Rainfall
3.8 in
10.3 wet days
Daylight
13 h 48 min
5:55 AM – 7:41 PM
Cloud cover
52%
2nd clearest
Wind
8 mph
12th windiest
Solar energy
5.53 kWh/m²
Travel score
6.9
out of 10

Allendale is census designated place in Ottawa County, Michigan, United States.

Density
287/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 77°F through the month.

A typical August day in Allendale reaches about 77°F in the afternoon and slips back to 64°F overnight — a 13°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 83°F. Set against its neighbours, August runs about 1°F cooler than July and about 6°F warmer than September.

50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
17866
27865
37865
47865
57865
67865
77865
87865
97865
107865
117765
127765
137765
147764
157764
167764
177764
187764
197764
207764
217764
227764
237764
247764
257663
267663
277663
287663
297663
307662
317662

How August really feels in Allendale

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.

Allendale 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
Jan31° / 21°2.611.7119.20.0
Feb32° / 20°2.08.46.910.20.0
Mar41° / 28°2.69.54.211.60.4
Apr52° / 38°4.1121.613.12.7
May64° / 49°4.311.7014.45.3
Jun74° / 61°3.610.9015.16.7
Jul78° / 66°3.910.7014.86.7
Aug77° / 64°3.810.3013.86.9
Sep71° / 57°3.310.1012.36.6
Oct58° / 46°3.8120.210.84.2
Nov46° / 36°3.111.63.29.51.1
Dec36° / 28°2.712.19.38.90.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 18% of August, with mostly cloudy or overcast conditions the remaining 41%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16337
26238
36139
46139
56139
66040
76040
86040
95941
105941
115842
125842
135941
145941
155842
165842
175743
185743
195842
205743
215842
225743
235842
245842
255842
266040
276040
286040
296040
306139
316139

Chance of precipitation in August

Any precipitation

Allendale gets around 3.8 in of rain over 10.3 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 33% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
334
434
534
634
734
834
935
1035
1135
1235
1335
1434
1534
1634
1733
1833
1933
2033
2133
2232
2332
2432
2531
2631
2731
2830
2930
3030
3130

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the humid band about 26% of days. Sticky, muggy-or-worse air turns up on roughly 32% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
111243024101
211253024101
31125302391
41125302391
51225292391
61225292491
71325292481
81325282481
91425282481
101525272471
111525272571
121525272571
131625262571
141625262571
151625262671
161624262671
171724262671
181724262671
191724252671
201724252670
211724252670
221824242670
231825242670
241925242570
251925242570
262025232470
272125232370
282225232370
292325232270
302425232170
312625222070

Wind in August

Winds average 8 mph in August, the calmest month.

Across August, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17light breeze
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147light breeze
157light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

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 5:38 AM to 6:12 AM, and sunset from 8:01 PM to 7:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.45:388:01
214.35:398:00
314.35:417:59
414.35:427:58
514.25:437:56
614.25:447:55
714.25:457:54
814.15:467:53
914.15:477:51
1014.05:487:50
1114.05:497:48
1213.95:507:47
1313.95:517:46
1413.95:537:44
1513.85:547:43
1613.85:557:41
1713.75:567:40
1813.75:577:38
1913.65:587:36
2013.65:597:35
2113.56:007:33
2213.56:017:32
2313.56:037:30
2413.46:047:28
2513.46:057:27
2613.36:067:25
2713.36:077:23
2813.26:087:21
2913.26:097:20
3013.16:107:18
3113.16:127:16

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.53 kWh/m².

For context, solar energy here swings from a low near 1.27 kWh/m² to a high of 6.65 kWh/m² in June across the year — August's 5.53 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.0Intense
46.0Bright
55.9Bright
65.9Bright
75.8Bright
85.8Bright
95.8Bright
105.7Bright
115.7Bright
125.7Bright
135.6Bright
145.6Bright
155.5Bright
165.5Bright
175.5Bright
185.4Bright
195.4Bright
205.4Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in August

Is August a good time to visit Allendale?

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

6.9
Sightseeing
1st-best month of the year
6.3
Beach & pool
2nd-best month of the year

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

What to pack for Allendale in August

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

In August, Allendale sees daytime highs around 77°F and nights near 64°F. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near Allendale in August

The nearest coast averages about 71°F in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 22 mi away) is warmest in August at about 71°F and coldest in March near 36°F.

It's comfortable for a long swim from Jul 20 to Sep 8 — about 1.7 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan39Bracing
Feb37Bracing
Mar36Bracing
Apr38Bracing
May44Bracing
Jun56Bracing
Jul68Cool
Aug71Refreshing
Sep67Cool
Oct58Bracing
Nov49Bracing
Dec43Bracing

UV index in Allendale 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 Allendale peaks around June 21 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 21UV 9Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr6High
May7Very high
Jun9Very high
Jul9Very high
Aug7Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Allendale in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Allendale is worst in June — around 16 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (November, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 2216 µg/m³Nov 137 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar12Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Allendale?

Allendale sits at 43.0°N, 86.0°W, 653 ft above sea level, in United States. The nearest listed city is Jenison, 9.3 mi away.

Topography around Allendale

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

Within 2 miles, the terrain around Allendale has only modest variations in elevation — a maximum elevation change of 125 ft around an average of 650 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 279 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 692 ft.

The land around Allendale is covered by trees (34%), grassland (29%) and cropland (27%) within 2 miles, trees (38%), cropland (29%) and grassland (27%) within 10 miles, and trees (41%) and water (29%) within 50 miles.

2 miles
125 ft
10 miles
279 ft
50 miles
692 ft
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Jenison 9.3 mi · Walker 9.3 mi · Grandville 11 mi · Wyoming 13 mi · Grand Rapids 14 mi · Holland 15 mi · Kentwood 17 mi · Norton Shores 21 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 Allendale (42.9723°, -85.9536°, elevation 653 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).