September weather forecastGlen Arbor, MI
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Glen Arbor, Michigan, with an average temperature varying between 66.4°F (19.1°C) and 55.8°F (13.2°C).Temperature
Glen Arbor records a mild change in average high-temperature during September, easing from a pleasant 72.1°F (22.3°C) in August to a comfortable 66.4°F (19.1°C). During September, the average low-temperature is recorded at a moderate 55.8°F (13.2°C).Humidity
The average relative humidity in September is 78%.Rainfall
In September, the rain falls for 13.4 days. Throughout September, 2.09" (53mm) of precipitation is accumulated. In Glen Arbor, during the entire year, the rain falls for 135.6 days and collects up to 24.25" (616mm) of precipitation.Snowfall
In Glen Arbor, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 7:07 am and sunset at 8:20 pm. On the last day of September, sunrise is at 7:41 am and sunset at 7:25 pm EDT.
Sunshine
In September, the average sunshine is 8.1h.UV index
In Glen Arbor, 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 exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Glen Arbor, MI
- Average high temperature in September: 66.4°F
The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in September: 55.8°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is February (19.6°F).
Average pressure in September
Glen Arbor, MI
- Average pressure in September: 30.02"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
Glen Arbor, MI
- Average wind speed in September: 10.3mph
The windiest months (with the highest average wind speed) are January and December (13.5mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).
Average humidity in September
Glen Arbor, MI
- Average humidity in September: 78%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in September
Glen Arbor, MI
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is October (2.87").
The driest months (with the least rainfall) are February and March (1.54").
Average rainfall days in September
Glen Arbor, MI
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is October (17 days).
The month with the least rainy days is February (4 days).
Average snowfall in September
Glen Arbor, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Glen Arbor, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Glen Arbor, MI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 1h and 48min).
Average sunshine days in September
Glen Arbor, MI
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is May (14.5 days).
The month with the least sunshine days is January (5.6 days).
Average UV index in September
Glen Arbor, 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
Glen Arbor, MI
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Glen Arbor, MI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
