Port Huron weather in July

In July, Port Huron sees average daytime highs of 79°F and overnight lows near 65°F, with 2.8 in of rain across 11 wet days and about 14.8 hours of daylight. It is the 1st-warmest and 6th-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 July, and the air most often feels humid.

Daylight stretches from about 15 h 06 min at the start of July to 14 h 24 min by month's end. Set against the rest of the year, July is Port Huron's 1st-clearest and 11th-windiest month. For the whole year in context, see Port Huron's year-round climate.

Daytime high
79°
1st warmest
Overnight low
65°
12th coldest
Rainfall
2.8 in
11 wet days
Daylight
14 h 54 min
5:09 AM – 8:02 PM
Cloud cover
54%
1st clearest
Wind
7 mph
11th windiest
Solar energy
6.23 kWh/m²
Travel score
6.6
out of 10

Port Huron is city in Michigan, United States.

Density
923/km²
people per km²
Founded
1814

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

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

A typical July day in Port Huron reaches about 79°F in the afternoon and slips back to 65°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 87°F. Set against its neighbours, July runs about 4°F warmer than June and about 2°F warmer than August.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
17864
27864
37864
47864
57864
67864
77965
87965
97965
107965
117965
127965
137965
147965
157965
167965
177965
187966
197966
207966
217966
227966
237966
247966
257966
267966
277965
287965
297965
307965
317965

How July really feels in Port Huron

Once humidity and wind are folded in, July 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

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

Port Huron weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan30° / 19°2.39.67.39.20.0
Feb32° / 20°2.08.46.310.20.0
Mar40° / 27°2.29.64.611.60.3
Apr52° / 38°3.311.41.813.12.7
May64° / 49°3.312014.45.4
Jun74° / 60°3.410.8015.16.7
Jul79° / 65°2.811014.86.6
Aug77° / 64°2.810.4013.86.9
Sep71° / 56°2.99.1012.36.7
Oct58° / 46°3.010.80.110.84.3
Nov46° / 36°2.69.72.49.51.2
Dec35° / 26°2.29.45.68.90.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in July, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 21% of July, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55743
65743
75743
85842
95743
105644
115644
125644
135545
145545
155545
165347
175347
185248
195347
205347
215248
225248
235347
245347
255446
265446
275545
285545
295644
305644
315743

Chance of precipitation in July

Any precipitation

Port Huron gets around 2.8 in of rain over 11 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 36% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
236
335
435
534
634
733
833
933
1033
1134
1234
1334
1435
1535
1636
1736
1837
1937
2038
2138
2238
2338
2439
2539
2638
2738
2838
2938
3037
3137

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the humid band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 35% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1202623265
2202623265
3192624256
4182724256
5172725256
6172725257
7162626257
8152627257
9142527258
10142528268
11132429268
12122329278
13122330279
14112230279
15112231289
16102231289
17102231289
18102131289
191021312810
201021312910
211021312910
22921312910
23921312810
2492231289
2592231289
2692331289
2792431289
2892430279
2992530278
3092530278
3192530278

Wind in July

Winds average 7 mph in July.

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

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 15 h 06 min at the start of July to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over July. Sunrise moves from 4:59 AM to 5:23 AM, and sunset from 8:07 PM to 7:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.14:598:07
215.14:598:07
315.15:008:07
415.15:018:07
515.15:018:06
615.15:028:06
715.15:028:06
815.05:038:06
915.05:048:05
1015.05:048:05
1115.05:058:04
1215.05:068:04
1314.95:078:03
1414.95:078:03
1514.95:088:02
1614.95:098:02
1714.95:108:01
1814.85:118:00
1914.85:128:00
2014.85:127:59
2114.75:137:58
2214.75:147:57
2314.75:157:56
2414.75:167:55
2514.65:177:55
2614.65:187:54
2714.65:197:53
2814.55:207:52
2914.55:217:51
3014.55:227:49
3114.45:237:48

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.23 kWh/m².

For context, solar energy here swings from a low near 1.36 kWh/m² to a high of 6.37 kWh/m² in June across the year — July's 6.23 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.4Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.2Intense
176.2Intense
186.2Intense
196.1Intense
206.1Intense
216.1Intense
226.0Intense
236.0Intense
246.0Intense
256.0Bright
266.0Bright
275.9Bright
285.9Bright
295.9Bright
305.8Bright
315.8Bright
Planning a trip in July

Is July a good time to visit Port Huron?

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

6.6
Sightseeing
4th-best month of the year
6.3
Beach & pool
1st-best month of the year

July is a reasonable time to visit Port Huron for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Port Huron in July

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

In July, Port Huron sees daytime highs around 79°F and nights near 65°F. Pack sun protection. Worth having: light clothes and rain gear. About 11 days see rain.

sun protectionlight clothesrain gear

Sea temperature near Port Huron in July

The nearest coast averages about 68°F in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 11 mi away) is warmest in August at about 71°F and coldest in February near 33°F.

It's comfortable for a long swim from Jul 19 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
Jan36Bracing
Feb33Bracing
Mar34Bracing
Apr37Bracing
May44Bracing
Jun57Bracing
Jul68Refreshing
Aug71Refreshing
Sep67Cool
Oct58Bracing
Nov49Bracing
Dec41Bracing

UV index in Port Huron in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Port Huron 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 Port Huron in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Port Huron 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 248 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar13Moderate
Apr13Moderate
May14Moderate
Jun15Moderate
Jul15Moderate
Aug14Moderate
Sep12Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Port Huron?

Port Huron sits at 43.0°N, 82.4°W, 604 ft above sea level, in United States. The nearest listed city is Sarnia, 1.2 mi away.

Topography around Port Huron

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

Within 2 miles, the terrain around Port Huron has only modest variations in elevation — a maximum elevation change of 79 ft around an average of 597 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 246 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 705 ft.

The land around Port Huron is covered by artificial surfaces (53%) within 2 miles, trees (29%), cropland (26%) and water (21%) within 10 miles, and cropland (45%) and water (25%) within 50 miles.

2 miles
79 ft
10 miles
246 ft
50 miles
705 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
July weather nearby: Sarnia 1.2 mi · Mount Clemens 35 mi · Clinton Township 37 mi · Shelby 37 mi · Saint Clair Shores 40 mi · Chatham 40 mi · Strathroy 40 mi · Sterling Heights 41 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 Port Huron (42.9709°, -82.4249°, elevation 604 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).