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
September in Suffolk witnesses a gentle descent in average high-temperature, descending from August's tropical 86.2°F (30.1°C) to a warm 80.4°F (26.9°C). Suffolk records an average temperature drop to a comfortable 65.3°F (18.5°C) in September.Humidity
In September, the average relative humidity is 77%.Rainfall
In Suffolk, in September, it is raining for 10.8 days, with typically 1.26" (32mm) of accumulated precipitation. Throughout the year, there are 132.2 rainfall days, and 14.61" (371mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September in Suffolk is 12h and 24min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:34 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:50 pm EDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
In September, the average daily maximum UV index in Suffolk, Virginia, is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 suggests this advice:
Guard yourself - Precautionary measures against sun damage are advocated. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Suffolk?
What is the average humidity in September in Suffolk?
How much does it rain in Suffolk in September?
When it does not snow in Suffolk?
What is the average length of the day in September in Suffolk?
What time are sunrise and sunset in September in Suffolk?
How many hours of sunshine does Suffolk have in September?
What is the UV index reading in September in Suffolk?
Average temperature in September
Suffolk, 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
Suffolk, 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
Suffolk, 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
Suffolk, 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
Suffolk, 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
Suffolk, 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
Suffolk, 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
Suffolk, 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
Suffolk, 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
Suffolk, 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
Suffolk, 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
Suffolk, 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
Suffolk, 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).
Suffolk, Virginia, USA
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