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 shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a hot 86.2°F (30.1°C) to a warm 80.4°F (26.9°C). Windsor, in the month of September, anticipates a consistent average low-temperature of 65.3°F (18.5°C).Humidity
The average relative humidity in September is 77%.Rainfall
In Windsor, during September, the rain falls for 10.8 days and regularly aggregates up to 1.26" (32mm) of precipitation. In Windsor, during the entire year, the rain falls for 132.2 days and collects up to 14.61" (371mm) of precipitation.Snowfall
In Windsor, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 24min.On the first day of September in Windsor, sunrise is at 6:38 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:51 pm EDT.
Sunshine
The average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Put precautions into practice - Guidance to elude sunburn is provided. To protect against the Sun's most potent rays, avoid direct exposure around midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Windsor have in September?
What is the UV index reading in September?
Average temperature in September
Windsor, VA
- Average high temperature in September: 80.4°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (46.6°F).
- Average low temperature in September: 65.3°F
The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (32.7°F).
Average pressure in September
Windsor, VA
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Windsor, VA
- Average wind speed in September: 6.9mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Windsor, VA
- Average humidity in September: 77%
The months with the highest relative humidity are May and December (79%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in September
Windsor, VA
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is November (0.91").
Average rainfall days in September
Windsor, VA
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is November (7.6 days).
Average snowfall in September
Windsor, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Windsor, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Windsor, VA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in September
Windsor, VA
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is July (13.1 days).
Average UV index in September
Windsor, VA
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Windsor, VA
- Average cloud cover in September: 36
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Windsor, VA
- 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).
Windsor, Virginia, USA
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