Mackinac Island weather in July

In July, Mackinac Island sees average daytime highs of 74°F and overnight lows near 62°F, with 3.3 in of rain across 10.9 wet days and about 15.2 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 74°F through the month. The sky is clear or mostly clear about 41% of the time in July, and the air most often feels humid.

Daylight stretches from about 15 h 30 min at the start of July to 14 h 42 min by month's end. Set against the rest of the year, July is Mackinac Island's 1st-clearest and 10th-windiest month. For the whole year in context, see Mackinac Island's year-round climate.

Daytime high
74°
1st warmest
Overnight low
62°
12th coldest
Rainfall
3.3 in
10.9 wet days
Daylight
15 h 12 min
5:08 AM – 8:20 PM
Cloud cover
50%
1st clearest
Wind
9 mph
10th windiest
Solar energy
6.49 kWh/m²
Travel score
6.9
out of 10

Mackinac Island is city located on Mackinac Island in Michigan.

Founded
1671

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 74°F through the month.

A typical July day in Mackinac Island reaches about 74°F in the afternoon and slips back to 62°F overnight — a 12°F spread between the day's warmth and the night's chill. On most days the high lands between 67°F and 81°F. Set against its neighbours, July runs about 6°F warmer than June and on par with August.

50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
17360
27361
37361
47361
57361
67361
77462
87462
97462
107462
117462
127462
137462
147463
157463
167563
177563
187563
197563
207563
217563
227563
237563
247563
257563
267563
277563
287563
297563
307563
317563

How July really feels in Mackinac Island

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.

Mackinac Island weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan24° / 14°1.99.910.98.90.0
Feb24° / 13°1.67.47.310.10.0
Mar33° / 21°2.08.46.111.60.0
Apr44° / 32°2.99.73.213.30.9
May56° / 43°2.910.20.314.73.7
Jun68° / 55°3.010015.56.3
Jul74° / 62°3.310.9015.26.9
Aug73° / 62°3.410013.96.9
Sep66° / 55°3.511.4012.35.9
Oct54° / 44°3.713.50.210.73.0
Nov42° / 34°2.611.65.79.30.5
Dec32° / 24°2.311.311.38.50.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in July, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of July, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35941
45842
55842
65941
75941
86040
95941
106040
116040
126040
136040
146040
155941
166040
176040
186040
195941
205941
216040
226040
236040
246040
256040
266040
276040
286040
296040
306139
316139

Chance of precipitation in July

Any precipitation

Mackinac Island gets around 3.3 in of rain over 10.9 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 35% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
234
334
434
534
634
734
834
934
1034
1135
1235
1335
1435
1535
1635
1736
1836
1936
2036
2136
2237
2337
2437
2537
2637
2737
2837
2937
3036
3136

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 31% of days. Sticky, muggy-or-worse air turns up on roughly 19% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1313026111
2313026121
3303026121
4303026122
5302927132
6292927132
7292927142
8282827142
9272828152
10262828162
11252829172
12242729172
13232730183
14222730183
15222731183
16212631183
17202632193
18202633193
19192633193
20182634192
21182634192
22172735192
23172735192
24162735192
25162735192
26162835192
27152835192
28152835192
29152835192
30162834192
31162834192

Wind in July

Winds average 9 mph in July.

Across July, daily wind ranges from about 9 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze
319light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 15 h 30 min at the start of July to 14 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over July. Sunrise moves from 4:57 AM to 5:24 AM, and sunset from 8:27 PM to 8:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.54:578:27
215.54:588:26
315.54:588:26
415.54:598:26
515.44:598:26
615.45:008:25
715.45:018:25
815.45:018:25
915.45:028:24
1015.35:038:24
1115.35:048:23
1215.35:058:23
1315.35:058:22
1415.35:068:21
1515.25:078:21
1615.25:088:20
1715.25:098:19
1815.15:108:19
1915.15:118:18
2015.15:128:17
2115.15:138:16
2215.05:148:15
2315.05:158:14
2414.95:168:13
2514.95:178:12
2614.95:188:11
2714.85:198:10
2814.85:218:09
2914.85:228:08
3014.75:238:06
3114.75:248:05

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.49 kWh/m².

For context, solar energy here swings from a low near 1.15 kWh/m² to a high of 6.61 kWh/m² in June across the year — July's 6.49 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.7Intense
26.7Intense
36.7Intense
46.7Intense
56.7Intense
66.7Intense
76.7Intense
86.6Intense
96.6Intense
106.6Intense
116.6Intense
126.6Intense
136.6Intense
146.5Intense
156.5Intense
166.5Intense
176.5Intense
186.5Intense
196.4Intense
206.4Intense
216.4Intense
226.4Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.2Intense
286.2Intense
296.2Intense
306.1Intense
316.1Intense
Planning a trip in July

Is July a good time to visit Mackinac Island?

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

6.9
Sightseeing
1st-best month of the year
5.6
Beach & pool
1st-best month of the year

July is a reasonable time to visit Mackinac Island for sightseeing.

What to pack for Mackinac Island in July

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

In July, Mackinac Island sees daytime highs around 74°F and nights near 62°F. Pack sun protection. Worth having: light clothes and rain gear. About 11 days see rain.

sun protectionlight clothesrain gear

Sea temperature near Mackinac Island in July

The nearest coast averages about 62°F in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 66°F and coldest in February near 34°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

30°40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°F)Comfort
Jan35Bracing
Feb34Bracing
Mar34Bracing
Apr36Bracing
May41Bracing
Jun52Bracing
Jul62Cool
Aug66Cool
Sep61Cool
Oct53Bracing
Nov44Bracing
Dec38Bracing

UV index in Mackinac Island in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mackinac Island peaks around June 19 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 19UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5Moderate
May7High
Jun8Very high
Jul8Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Mackinac Island?

Mackinac Island sits at 45.8°N, 84.6°W, 0 ft above sea level, in United States. The nearest listed city is Sault Ste. Marie, 47 mi away.

Topography around Mackinac Island

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

Within 2 miles, the terrain around Mackinac Island has only modest variations in elevation — a maximum elevation change of 351 ft around an average of 614 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 351 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,037 ft.

The land around Mackinac Island is covered by water (72%) and trees (24%) within 2 miles, water (75%) and trees (22%) within 10 miles, and trees (48%) and water (44%) within 50 miles.

2 miles
351 ft
10 miles
351 ft
50 miles
1,037 ft
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Sault Ste. Marie 47 mi · Sault Ste. Marie 48 mi · Traverse City 89 mi · Marquette 141 mi · Midland 155 mi · Mount Pleasant 156 mi · Bay City 160 mi · Saginaw Township North 168 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 Mackinac Island (45.8492°, -84.6189°, elevation 0 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).