September weather forecastBellaire, MI
September
Weather in September
September, the first month of the autumn in Bellaire, is still a comfortable month, with temperature in the range of an average low of 53.1°F (11.7°C) and an average high of 67.3°F (19.6°C).Temperature
With the arrival of September, Bellaire notices a mild change in the average high-temperature, sliding from August's moderately hot 73.6°F (23.1°C) to a comfortable 67.3°F (19.6°C). During the nights in September, an average low-temperature of 53.1°F (11.7°C) is observed.Humidity
In Bellaire, the average relative humidity in September is 78%.Rainfall
In September, the rain falls for 12.9 days. Throughout September, 2.05" (52mm) of precipitation is accumulated. Throughout the year, in Bellaire, there are 132 rainfall days, and 25.47" (647mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Bellaire, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 7:03 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 7:22 pm EDT.
Sunshine
The average sunshine in September is 7.9h.UV index
In September, the average daily maximum UV index in Bellaire is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 3 in September translates into this advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bellaire, MI
- Average high temperature in September: 67.3°F
The warmest months (with the highest average high temperature) are July and August (73.6°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in September: 53.1°F
The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is February (17.2°F).
Average pressure in September
Bellaire, 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
Bellaire, MI
- Average wind speed in September: 8.6mph
The windiest month (with the highest average wind speed) is December (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in September
Bellaire, 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 (75%).
Average rainfall in September
Bellaire, MI
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is October (3.07").
The driest month (with the least rainfall) is February (1.5").
Average rainfall days in September
Bellaire, MI
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is October (17.3 days).
The month with the least rainy days is February (4 days).
Average snowfall in September
Bellaire, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Bellaire, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bellaire, 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 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 30min).
Average sunshine days in September
Bellaire, MI
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is September (14.9 days).
The month with the least sunshine days is January (6.9 days).
Average UV index in September
Bellaire, 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
Bellaire, MI
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 85).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Bellaire, 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 months with the lowest visibility are January, February and December (5mi).
