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
The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a moderately hot 73.6°F (23.1°C) in August to an enjoyable 67.5°F (19.7°C). Throughout September, Williamsburg anticipates an average low-temperature of 54°F (12.2°C).Humidity
The average relative humidity in September is 78%.Rainfall
In Williamsburg, during September, the rain falls for 8.9 days and regularly aggregates up to 0.51" (13mm) of precipitation. Throughout the year, there are 94.8 rainfall days, and 8.35" (212mm) of precipitation is accumulated.Snowfall
In Williamsburg, snow does not fall in June through September.Daylight
The average length of the day in September in Williamsburg, Michigan, is 12h and 31min.On the first day of September, sunrise is at 7:04 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 7:23 pm EDT.
Sunshine
In Williamsburg, the average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A typical high UV index of 3 in September suggests the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Williamsburg?
What is the average humidity in September in Williamsburg?
How many days does it rain in September in Williamsburg?
When it does not snow in Williamsburg?
Does it snow in Williamsburg in September?
How many hours of daylight does Williamsburg have in September?
When are sunrise and sunset in September in Williamsburg?
How many hours of sunshine does Williamsburg have in September?
How high is the UV index in September in Williamsburg?
Average temperature in September
Williamsburg, MI
- Average high temperature in September: 67.5°F
The warmest month (with the highest average high temperature) is August (73.6°F).
The month with the lowest average high temperature is January (25.7°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is August (59.5°F).
The coldest months (with the lowest average low temperature) are January and February (18.1°F).
Average pressure in September
Williamsburg, 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
Williamsburg, MI
- Average wind speed in September: 8.9mph
The windiest months (with the highest average wind speed) are January and December (12mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in September
Williamsburg, MI
- Average humidity in September: 78%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and May (77%).
Average rainfall in September
Williamsburg, MI
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is May (0.98").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in September
Williamsburg, MI
- Average rainfall days in September: 8.9 days
The month with the highest number of rainy days is May (11.5 days).
The month with the least rainy days is February (2.1 days).
Average snowfall in September
Williamsburg, MI
- Average snowfall in September: 0"
The months with the highest snowfall are January and November (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Williamsburg, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Williamsburg, 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: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 1h and 48min).
Average sunshine days in September
Williamsburg, MI
- Average sunshine days in September: 18.2 days
The month with the most sunshine days is March (18.8 days).
The month with the least sunshine days is February (14.6 days).
Average UV index in September
Williamsburg, 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
Williamsburg, MI
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Williamsburg, MI
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Williamsburg, Michigan, USA
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