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 warm 84.6°F (29.2°C) to a still moderately hot 77.4°F (25.2°C). During September, Randolph Corner records a consistent average nighttime temperature of 58.3°F (14.6°C).Humidity
The average relative humidity in September in Randolph Corner is 77%.Rainfall
September is the month with the least rainfall in Randolph Corner. Rain falls for 13.7 days and accumulates 1.93" (49mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:55 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
The average daily maximum UV index in September in Randolph Corner is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What are September temperatures in Randolph Corner?
What is the average humidity in September in Randolph Corner?
What is the driest month in Randolph Corner?
How many days does it rain in September in Randolph Corner?
When it does not snow in Randolph Corner?
Does it snow in Randolph Corner in September?
What is the average length of the day in September in Randolph Corner?
When are sunrise and sunset in September in Randolph Corner?
How many hours of sunshine does Randolph Corner have in September?
How high is the UV index in September in Randolph Corner?
Average temperature in September
Randolph Corner, VA
- Average high temperature in September: 77.4°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in September: 58.3°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in September
Randolph Corner, VA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Randolph Corner, VA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in September
Randolph Corner, VA
- Average humidity in September: 77%
The months with the highest relative humidity are October and December (78%).
The month with the lowest relative humidity is July (73%).
Average rainfall in September
Randolph Corner, VA
- Average rainfall in September: 1.93"
The wettest months (with the highest rainfall) are May and August (3.35").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in September
Randolph Corner, VA
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (10.1 days).
Average snowfall in September
Randolph Corner, VA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Randolph Corner, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.8 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
Randolph Corner, VA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Randolph Corner, VA
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (11.1 days).
Average UV index in September
Randolph Corner, VA
- Average UV index in September: 4
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, February, November and December (UV index 2).
Average cloud cover in September
Randolph Corner, VA
- Average cloud cover in September: 36
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Randolph Corner, VA
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, June, July, August and November (6mi).
The months with the lowest visibility are January, May, September, October and December (5mi).
Randolph Corner, Virginia, USA
Weather forecast for your location
2. Allow the app to use your location
