September weather forecastHarrisonburg, VA
September
Weather in September
September brings a notable decrease in temperatures, with average high temperatures dropping to 75.4°F (24.1°C) in Harrisonburg. This heralds the start of the autumn season with a crispness in the air and vibrant foliage transforming the cityscape. The shift in climate presents a perfectly balanced weather, neither too hot nor too cold. September proves to be a glorious entry into the fall season through colorful foliage and pleasing temperatures.Temperature
Harrisonburg's September weather features a light decline in high-temperatures, reducing from a moderately hot 82°F (27.8°C) in August to a still warm 75.4°F (24.1°C). Harrisonburg experiences an average nighttime temperature of 54.5°F (12.5°C) in the month of September.Humidity
May, September and October, with an average relative humidity of 78%, are the most humid months in Harrisonburg.Rainfall
In Harrisonburg, Virginia, in September, it is raining for 14.5 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, in Harrisonburg, Virginia, there are 167.3 rainfall days, and 30.35" (771mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:45 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:59 pm EDT.
Sunshine
In Harrisonburg, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Be vigilant - A duty to shield skin and eyes from injury exists. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Harrisonburg, VA
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
Harrisonburg, VA
- Average pressure in September: 30.06"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
Harrisonburg, VA
- Average wind speed in September: 4.5mph
The windiest months (with the highest average wind speed) are February and April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Harrisonburg, VA
- Average humidity in September: 78%
The months with the highest relative humidity are May, September and October (78%).
The months with the lowest relative humidity are January and July (74%).
Average rainfall in September
Harrisonburg, VA
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is November (1.77").
Average rainfall days in September
Harrisonburg, VA
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is November (9 days).
Average snowfall in September
Harrisonburg, VA
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Harrisonburg, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Harrisonburg, VA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Harrisonburg, VA
- Average sunshine days in September: 12.3 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in September
Harrisonburg, VA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Harrisonburg, VA
- Average cloud cover in September: 39
The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are June and July (Cloud cover 32).
Average visibility in September
Harrisonburg, VA
- Average visibility in September: 5mi
The months with the highest visibility are February, April, June, July and November (6mi).
The months with the lowest visibility are January, March, May, August, September, October and December (5mi).
