September weather forecastHarbor Springs, MI
September
Weather in September
September, the first month of the autumn in Harbor Springs, is still a refreshing month, with an average temperature varying between 66.2°F (19°C) and 53.6°F (12°C).Temperature
The move into September indicates a slight reduction in the average high-temperature, down from August's agreeable 72.5°F (22.5°C) to an enjoyable 66.2°F (19°C). Harbor Springs experiences an average nighttime temperature of 53.6°F (12°C) in the month of September.Humidity
In Harbor Springs, the average relative humidity in September is 78%.Rainfall
In Harbor Springs, during September, the rain falls for 13 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Harbor Springs, during the entire year, the rain falls for 140.7 days and collects up to 27.6" (701mm) of precipitation.Snowfall
In Harbor Springs, snow does not fall in June through September.Ocean temperature
In Harbor Springs, the average seawater temperature in September is 65.1°F (18.4°C).Note: Most individuals do not find swimming at 65.1°F (18.4°C) to be enjoyable. As the water temperature declines below 69.8°F (21°C), maintaining control over one's breathing becomes harder.
Daylight
The average length of the day in September in Harbor Springs is 12h and 31min.On the first day of September in Harbor Springs, sunrise is at 7:02 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 7:21 pm EDT.
Sunshine
In Harbor Springs, the average sunshine in September is 7.7h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Heed the precautions - It is counselled to guard against solar damage. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Harbor Springs, MI
- Average high temperature in September: 66.2°F
The warmest month (with the highest average high temperature) is August (72.5°F).
The month with the lowest average high temperature is January (24.8°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is August (59.2°F).
The coldest month (with the lowest average low temperature) is February (16.5°F).
Average pressure in September
Harbor Springs, 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
Harbor Springs, MI
- Average wind speed in September: 8.8mph
The windiest month (with the highest average wind speed) is December (11.4mph).
The calmest months (with the lowest average wind speed) are June and July (7.5mph).
Average humidity in September
Harbor Springs, MI
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Harbor Springs, MI
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is February (1.65").
Average rainfall days in September
Harbor Springs, MI
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is October (18.3 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Harbor Springs, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (9.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Harbor Springs, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (22.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Harbor Springs, MI
- Average sea temperature in September: 65.2°F
The best month for swimming (with the highest average sea temperature) is August (69°F).
The coldest month (with the lowest average sea temperature) is March (33.8°F).
Average daylight in September /
Average sunshine in September
Harbor Springs, MI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 7h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 1h and 18min).
Average sunshine days in September
Harbor Springs, MI
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is September (14.9 days).
The months with the least sunshine days are January and February (5.5 days).
Average UV index in September
Harbor Springs, 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, November and December (UV index 1).
Average cloud cover in September
Harbor Springs, MI
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 86).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Harbor Springs, MI
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
