Mackinac Island, MI weather in July
Mackinac Island is mild in July, with frequent rain: highs average 77°F and nights drop to about 58°F. There are about 11 days with rain. This is the peak of the warm season in Mackinac Island. A great month for outdoor plans.
- Normal high
- 77°F
- Normal low
- 58°F
- Wet days
- 11
- 3.1 in total
- Muggy days
- 4
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 76°F | 78°F |
| Normal low | 56°F | 59°F |
| Chance of a wet day | 35% | 35% |
| Sunrise / sunset | 5:52 am / 9:32 pm | 6:20 am / 9:09 pm |
| Daylight | 15.7 h | 14.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical July day
- 6 am58°Fdew point 55°F
- 9 am69°Fdew point 59°F
- Noon75°Fdew point 58°F
- 3 pm77°Fdew point 57°F
- 6 pm75°Fdew point 57°F
- 9 pm66°Fdew point 58°F
NOAA hourly normals (local standard time) from Pellston Rgnl Airport (21 mi away); average wind 7 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F16 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph8 of 31
- Hot dayshigh 90°F or more1 of 31
- Muggy daysdaily mean dew point 65°F or more4 of 31
- Wet daysat least 0.01 in of rain or melted snow11 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per July, counted from daily records for each year 1991-2020.
Rain in July
Normal precipitation is 3.1 in; a dry July brings about 2.2 in and a wet one about 3.9 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How July varies from year to year
- Warmest July, 1991-20202006: average high 83°F
- Coolest July1992: average high 69°F
- Wettest July2003: 5.8 in
- Driest July2015: 1.4 in
- Highest reading97°F (July 15, 1995)
- Lowest reading32°F (July 18, 2000)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
July compared with June and August
| June | July | August | |
|---|---|---|---|
| Normal high | 72°F | 77°F | 77°F |
| Normal low | 52°F | 58°F | 57°F |
| Wet days | 11 | 11 | 10 |
| Comfortable days | 17 | 16 | 17 |
| Daylight | 15.7 h | 15.3 h | 14.1 h |
Highs change by +5°F from June and 0°F into August.
Nearby alternatives in July
- Warmer: Grand Rapids, MI206 mi · high 83°F · 10 wet days
How Mackinac Island ranks in July
- Normal high340th warmest of 378 cities; 8th of 8 in Michigan
- Wet days287th driest of 378
- Comfortable days27th most of 340
What to pack for Mackinac Island in July
- A rain jacket or umbrella – rain on about 11 days
- Sunglasses and sunscreen – about 15.3 hours of daylight and highs near 77°F
Heating and cooling
July has 41 heating degree days and 120 cooling degree days (base 65°F), 2% of the year's total heating and cooling demand.
Questions
How hot is Mackinac Island in July?
The normal high is 77°F and the normal low is 58°F. From 1991 to 2020 the hottest July reading was 97°F (July 15, 1995).
Does it rain a lot in Mackinac Island in July?
About 11 days in July have at least 0.01 in of precipitation, and the normal total is 3.1 in. The wettest July in 1991-2020 was in 2003 (5.8 in); the driest was in 2015 (1.4 in).
Is July a good time to visit Mackinac Island?
July ranks 2nd of 12 months on our comfort score for Mackinac Island (74 out of 100). It has about 16 comfortable days and about 1 day at 90°F or hotter. The best month is June.
Where the numbers come from
- Temperature, rain, snowfall and snow depth: Cheboygan (USC00201492), 15 mi SSE of the city center, 588 ft . NOAA normals and daily records, 1991-2020.
- Frost dates: St Ignace Mackinac Br (USC00207274), 5.0 mi W of the city center, 595 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Pellston Rgnl Airport (USW00014841), 21 mi SSW of the city center, 705 ft (107 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Pellston Regional Arpt Of Emmet County Arpt (727347-14841), 21 mi SSW of the city center, 706 ft (108 ft higher than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).