Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
In the transition to September, Saint Ignace observes a minor drop in the average high-temperature, shifting from a pleasant 71.1°F (21.7°C) in August to a refreshing 64.8°F (18.2°C). Nightly temperatures in Saint Ignace drop to an average low of 53.1°F (11.7°C) in September.Humidity
The average relative humidity in September is 79%.Rainfall
In Saint Ignace, in September, during 11.4 rainfall days, 1.73" (44mm) 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
In Saint Ignace, the average seawater temperature in September is 64.9°F (18.3°C).Note: Swimming is not an enjoyable activity for the majority when the water is at 64.9°F (18.3°C). The difficulty of controlling breathing increases as the temperature dips from 69.8°F (21°C) to 59°F (15°C).
Daylight
In September, the average length of the day is 12h and 31min.On the first day of September, sunrise is at 7:00 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 7:20 pm EDT.
Sunshine
In Saint Ignace, the average sunshine in September is 7.8h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 3 in September transforms into this advice:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Saint Ignace in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow in Saint Ignace?
Does it snow in September?
What is the ocean temperature in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Saint Ignace, MI
- Average high temperature in September: 64.8°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 September: 53.1°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 September
Saint Ignace, MI
- Average pressure in September: 30.01"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 September
Saint Ignace, MI
- Average wind speed in September: 8.5mph
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 September
Saint Ignace, MI
- Average humidity in September: 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 September
Saint Ignace, MI
- Average rainfall in September: 1.73"
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 September
Saint Ignace, MI
- Average rainfall days in September: 11.4 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 September
Saint Ignace, MI
- Average snowfall in September: 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 September
Saint Ignace, MI
- Average snowfall days in September: 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 September
Saint Ignace, MI
- Average sea temperature in September: 64.9°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 September /
Average sunshine in September
Saint Ignace, MI
- Average daylight in September: 12h and 3min
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 September: 7h and 5min
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 September
Saint Ignace, MI
- Average sunshine days in September: 16.9 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 September
Saint Ignace, MI
- Average UV index in September: 3
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 September
Saint Ignace, MI
- Average cloud cover in September: 34
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 September
Saint Ignace, MI
- Average visibility in September: 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).
Saint Ignace, Michigan, USA
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