September weather forecastProspect, VA
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Prospect, Virginia, with an average temperature varying between 61°F (16.1°C) and 80.2°F (26.8°C).Temperature
September's onset introduces a mild reduction in the average high-temperature, from a hot 87.4°F (30.8°C) in August to a warm 80.2°F (26.8°C). An average nighttime temperature of 61°F (16.1°C) is observed during September.Humidity
In September, the average relative humidity is 75%.Rainfall
The month with the least rainfall in Prospect is September, when the rain falls for 12.7 days and typically collects 1.81" (46mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day in Prospect is 12h and 25min.On the first day of September, sunrise is at 6:45 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:58 pm EDT.
Sunshine
The average sunshine in September in Prospect is 8.6h.UV index
In Prospect, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 5 in September translates into this advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Prospect, VA
- Average high temperature in September: 80.2°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in September: 61°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in September
Prospect, VA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Prospect, VA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Prospect, VA
- Average humidity in September: 75%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (69%).
Average rainfall in September
Prospect, VA
- Average rainfall in September: 1.81"
The wettest months (with the highest rainfall) are February and May (2.95").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in September
Prospect, VA
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in September
Prospect, VA
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.44").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Prospect, VA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (3.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Prospect, VA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Prospect, VA
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is May (11.2 days).
Average UV index in September
Prospect, VA
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Prospect, VA
- Average cloud cover in September: 40
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Prospect, VA
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, June, July, August, October and November (6mi).
The months with the lowest visibility are January, May, September and December (5mi).
