Pontiac weather in August

In August, Pontiac sees average daytime highs of 79°F and overnight lows near 61°F, with 3.2 in of rain across 10.6 wet days and about 13.7 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 80°F in the first days to 77°F by the end. The sky is clear or mostly clear about 30% 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 Pontiac's 3rd-clearest and 12th-windiest month. For the whole year in context, see Pontiac's year-round climate.

Daytime high
79°
2nd warmest
Overnight low
61°
11th coldest
Rainfall
3.2 in
10.6 wet days
Daylight
13 h 48 min
5:45 AM – 7:30 PM
Cloud cover
57%
3rd clearest
Wind
6 mph
12th windiest
Solar energy
5.28 kWh/m²
Travel score
6.6
out of 10

Pontiac is city and county seat of Oakland County, Michigan, United States.

Density
1,140/km²
people per km²
Founded
1818

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 80°F in the first days to 77°F by the end.

A typical August day in Pontiac reaches about 79°F in the afternoon and slips back to 61°F overnight — a 17°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)
18063
28063
38063
48063
58063
68062
78062
88062
97962
107962
117962
127962
137962
147962
157962
167962
177962
187861
197861
207861
217861
227861
237861
247861
257861
267860
277860
287860
297760
307760
317759

How August really feels in Pontiac

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.

Pontiac 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° / 18°2.39.679.20.0
Feb33° / 19°2.07.96.710.30.0
Mar44° / 27°2.49.94.211.60.8
Apr56° / 38°3.612.11.913.13.6
May67° / 49°3.912.70.114.45.8
Jun77° / 59°3.911.2015.16.5
Jul81° / 63°3.311.5014.86.3
Aug79° / 61°3.210.6013.76.6
Sep72° / 54°3.09.5012.36.8
Oct59° / 43°3.0100.210.84.6
Nov46° / 33°2.69.32.29.61.2
Dec35° / 24°2.29.35.68.90.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 23% of August, with mostly cloudy or overcast conditions the remaining 47%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25545
35545
45446
55446
65446
75446
85446
95446
105347
115347
125347
135347
145248
155248
165248
175248
185248
195248
205248
215149
225149
235248
245248
255248
265347
275347
285446
295446
305545
315545

Chance of precipitation in August

Any precipitation

Pontiac gets around 3.2 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 38% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
337
437
537
637
737
837
937
1036
1136
1236
1336
1436
1535
1635
1735
1834
1934
2033
2133
2232
2332
2431
2531
2631
2730
2830
2930
3030
3130

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 24% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1192829195
2192829195
3192829195
4202829195
5202729195
6202729195
7212728195
8212728205
9212727204
10222727204
11222726214
12222726214
13232726213
14232825213
15232825213
16232825223
17232825222
18232825222
19232825222
20232825232
21232825232
22232725232
23232725232
24242824232
25242824222
26252824222
27262824212
28272823212
29282822212
30292822202
31302821192

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 7 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
307calm
317calm

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 5:29 AM to 6:01 AM, and sunset from 7:50 PM to 7:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.45:297:50
214.35:307:49
314.35:317:47
414.25:327:46
514.25:337:45
614.25:347:44
714.15:357:42
814.15:367:41
914.05:377:40
1014.05:387:38
1114.05:397:37
1213.95:407:36
1313.95:417:34
1413.85:437:33
1513.85:447:31
1613.85:457:30
1713.75:467:28
1813.75:477:27
1913.65:487:25
2013.65:497:24
2113.55:507:22
2213.55:517:20
2313.45:527:19
2413.45:547:17
2513.35:557:15
2613.35:567:14
2713.35:577:12
2813.25:587:10
2913.25:597:09
3013.16:007:07
3113.16:017:05

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.28 kWh/m².

For context, solar energy here swings from a low near 1.39 kWh/m² to a high of 6.29 kWh/m² in June across the year — August's 5.28 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.7Bright
35.7Bright
45.7Bright
55.6Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.5Bright
115.4Bright
125.4Bright
135.4Bright
145.3Bright
155.3Bright
165.3Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.1Bright
225.1Bright
235.1Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
284.9Bright
294.9Bright
304.9Bright
314.8Bright
Planning a trip in August

Is August a good time to visit Pontiac?

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

6.6
Sightseeing
2nd-best month of the year
6.3
Beach & pool
2nd-best month of the year

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

What to pack for Pontiac in August

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

In August, Pontiac 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

Sea temperature near Pontiac in August

The nearest coast averages about 73°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 21 mi away) is warmest in August at about 73°F and coldest in February near 33°F.

It's comfortable for a long swim from Jul 2 to Sep 15 — about 2.5 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan34Bracing
Feb33Bracing
Mar34Bracing
Apr41Bracing
May52Bracing
Jun64Cool
Jul72Refreshing
Aug73Refreshing
Sep68Refreshing
Oct57Bracing
Nov47Bracing
Dec39Bracing

UV index in Pontiac 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 Pontiac peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 20UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr5High
May7High
Jun9Very high
Jul8Very high
Aug7High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Pontiac 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 Pontiac is worst in July — around 15 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1415 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar14Moderate
Apr13Moderate
May15Moderate
Jun15Moderate
Jul15Moderate
Aug15Moderate
Sep12Moderate
Oct8Good
Nov9Good
Dec9Good
Location & terrain

Where is Pontiac?

Pontiac sits at 42.6°N, 83.3°W, 922 ft above sea level, in United States. The nearest listed city is Auburn Hills, 4.3 mi away.

Topography around Pontiac

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

Within 2 miles, the terrain around Pontiac has only modest variations in elevation — a maximum elevation change of 194 ft around an average of 951 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 614 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 915 ft.

The land around Pontiac is covered by artificial surfaces (40%), trees (35%) and grassland (20%) within 2 miles, trees (59%) within 10 miles, and trees (38%) and cropland (29%) within 50 miles.

2 miles
194 ft
10 miles
614 ft
50 miles
915 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Auburn Hills 4.3 mi · West Bloomfield Township 6.8 mi · Waterford 7.5 mi · Rochester Hills 7.5 mi · Troy 7.5 mi · Birmingham 7.5 mi · Berkley 11 mi · Farmington Hills 11 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 Pontiac (42.6389°, -83.291°, elevation 922 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).