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 reveals a small adjustment in temperature, transitioning from an average high of a tropical 86.4°F (30.2°C) in August to a moderately hot 79.5°F (26.4°C). An average nighttime temperature of 59.2°F (15.1°C) is noted in Troy during the month of September.Humidity
The average relative humidity in September in Troy is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 11.8 days and accumulates 1.81" (46mm) of precipitation.Snowfall
In Troy, snow does not fall in May through October.Daylight
The average length of the day in September in Troy is 12h and 25min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:42 pm. On the last day of September, in Troy, sunrise is at 7:08 am and sunset at 6:57 pm EDT.
Sunshine
The average sunshine in September is 8.8h.UV index
In Troy, Virginia, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 5 in September translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What are September temperatures in Troy?
What is the average humidity in September in Troy?
What is the driest month in Troy?
How many days does it rain in September in Troy?
When it does not snow in Troy?
What is the average length of the day in September in Troy?
When are sunrise and sunset in September in Troy?
How long on average sun shines in September in Troy?
How high is the UV index in September in Troy?
Average temperature in September
Troy, VA
- Average high temperature in September: 79.5°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (42.3°F).
- Average low temperature in September: 59.2°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in September
Troy, VA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Troy, VA
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in September
Troy, 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 (71%).
Average rainfall in September
Troy, VA
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is April (2.99").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in September
Troy, VA
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in September
Troy, VA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.91").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Troy, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Troy, VA
- Average daylight in September: 12h and 2min
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 36min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Troy, VA
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in September
Troy, 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, February, November and December (UV index 2).
Average cloud cover in September
Troy, VA
- Average cloud cover in September: 38
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Troy, VA
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, June, July, August, October and November (6mi).
The months with the lowest visibility are February, May, September and December (5mi).
Troy, Virginia, USA
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