August weather forecastSaint Ignace, MI
August
Weather in August
The last month of the summer, August, is another pleasant month in Saint Ignace, Michigan, with an average temperature varying between 71.1°F (21.7°C) and 58.6°F (14.8°C).Temperature
Saint Ignace's shift from July to August is accompanied by an average high-temperature of a still agreeable 71.1°F (21.7°C), a slight deviation from 71.4°F (21.9°C). Saint Ignace, during the month of August, experiences an average low-temperature of 58.6°F (14.8°C).Humidity
In Saint Ignace, the average relative humidity in August is 79%.Rainfall
In Saint Ignace, Michigan, in August, during 13.8 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. Throughout the year, there are 131 rainfall days, and 21.22" (539mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Ocean temperature
The month with the warmest seawater is August, with an average ocean temperature of 68.5°F (20.3°C).Note: Most people do not take pleasure in swimming in water at 68.5°F (20.3°C). The difficulty of managing breathing increases as the water temperature dips from 69.8°F (21°C) to 59°F (15°C).
Daylight
In Saint Ignace, the average length of the day in August is 14h and 5min.On the first day of August, sunrise is at 6:22 am and sunset at 9:07 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 8:18 pm EDT.
Sunshine
In August, the average sunshine is 9.9h.UV index
June through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 5 in August leads to these guidelines:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Saint Ignace, MI
- Average high temperature in August: 71.1°F
The warmest month (with the highest average high temperature) is July (71.4°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in August: 58.6°F
The month with the highest average low temperature is August (58.6°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).
Average pressure in August
Saint Ignace, MI
- Average pressure in August: 29.94"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Saint Ignace, MI
- Average wind speed in August: 8.1mph
The windiest months (with the highest average wind speed) are November and December (10.9mph).
The calmest months (with the lowest average wind speed) are June and July (7.6mph).
Average humidity in August
Saint Ignace, MI
- Average humidity in August: 79%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (75%).
Average rainfall in August
Saint Ignace, MI
- Average rainfall in August: 1.65"
The wettest month (with the highest rainfall) is October (2.72").
The driest month (with the least rainfall) is January (1.3").
Average rainfall days in August
Saint Ignace, MI
- Average rainfall days in August: 13.8 days
The month with the highest number of rainy days is October (16.5 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in August
Saint Ignace, MI
- Average snowfall in August: 0"
The month with the highest snowfall is January (5.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Saint Ignace, MI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (21.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in August
Saint Ignace, MI
- Average sea temperature in August: 68.6°F
The best month for swimming (with the highest average sea temperature) is August (68.6°F).
The coldest month (with the lowest average sea temperature) is March (33.1°F).
Average daylight in August /
Average sunshine in August
Saint Ignace, MI
- Average daylight in August: 14h and 6min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in August: 9h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 1h and 54min).
Average sunshine days in August
Saint Ignace, MI
- Average sunshine days in August: 15.4 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is January (7.1 days).
Average UV index in August
Saint Ignace, MI
- Average UV index in August: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in August
Saint Ignace, MI
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 80).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in August
Saint Ignace, MI
- Average visibility in August: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).





