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 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
A mild shift in the average high-temperature occurs in September, reducing from a moderately hot 76.5°F (24.7°C) in August to an agreeable 69.4°F (20.8°C). September generally records an average low-temperature of 50.7°F (10.4°C).Humidity
In September, the average relative humidity is 80%.Rainfall
In September, the rain falls for 13.6 days. Throughout September, 1.73" (44mm) of precipitation is accumulated. In Boon, during the entire year, the rain falls for 146.4 days and collects up to 27.05" (687mm) of precipitation.Snowfall
In Boon, snow does not fall in June through September.Daylight
In Boon, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 7:06 am and sunset at 8:18 pm. On the last day of September, sunrise is at 7:39 am and sunset at 7:24 pm EDT.
Sunshine
The average sunshine in September is 7.8h.UV index
In Boon, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the UV index of 3 transforms into the following advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Boon have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Boon, MI
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (23.9°F).
- Average low temperature in September: 50.7°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in September
Boon, 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
Boon, MI
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in September
Boon, MI
- Average humidity in September: 80%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and May (75%).
Average rainfall in September
Boon, MI
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is October (3.46").
The driest month (with the least rainfall) is February (1.65").
Average rainfall days in September
Boon, MI
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in September
Boon, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (10.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Boon, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (23.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Boon, MI
- Average daylight in September: 12h and 3min
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: 7h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 1h and 42min).
Average sunshine days in September
Boon, MI
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is September (13.3 days).
The month with the least sunshine days is January (6 days).
Average UV index in September
Boon, 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
Boon, MI
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in September
Boon, MI
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Boon, Michigan, USA
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