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 marks a gentle change in average high-temperature, declining from August's moderately hot 80.2°F (26.8°C) to a still warm 74.5°F (23.6°C). A stark contrast in day to night temperatures can be seen in Speedwell, Virginia, in September, with an average low-temperature of 52.7°F (11.5°C).Humidity
In September, the average relative humidity is 79%.Rainfall
September is the month with the least rainfall in Speedwell. Rain falls for 16.5 days and accumulates 1.69" (43mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Speedwell is 12h and 24min.On the first day of the month, sunrise is at 6:56 am and sunset at 7:52 pm. On the last day of September, in Speedwell, sunrise is at 7:19 am and sunset at 7:09 pm EDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
In Speedwell, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Speedwell?
What is the average humidity in September in Speedwell?
What is the driest month in Speedwell?
How much does it rain in Speedwell in September?
When it does not snow in Speedwell?
Does it snow in Speedwell in September?
How many hours of daylight does Speedwell have in September?
When are sunrise and sunset in September in Speedwell?
How long on average sun shines in September in Speedwell?
How high is the UV index in September in Speedwell?
Average temperature in September
Speedwell, VA
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure in September
Speedwell, VA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Speedwell, VA
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Speedwell, VA
- Average humidity in September: 79%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April, June, July and November (77%).
Average rainfall in September
Speedwell, VA
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in September
Speedwell, VA
- Average rainfall days in September: 16.5 days
The month with the highest number of rainy days is May (21.3 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in September
Speedwell, VA
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.22").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Speedwell, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Speedwell, 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: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in September
Speedwell, VA
- Average sunshine days in September: 10.1 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is May (6.8 days).
Average UV index in September
Speedwell, VA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Speedwell, VA
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 38).
Average visibility in September
Speedwell, VA
- Average visibility in September: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
Speedwell, Virginia, USA
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