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
Welcoming September, Blackwater notes an average high-temperature of a still moderately hot 78.3°F (25.7°C), nearly consistent with August's 83.5°F (28.6°C). Throughout September nights, Blackwater reports a steady thermal contrast from the day, with an average low-temperature of 56.3°F (13.5°C).Humidity
The average relative humidity in September is 77%.Rainfall
The month with the least rainfall in Blackwater is September, when the rain falls for 14.6 days and typically collects 1.85" (47mm) of precipitation.Snowfall
In Blackwater, snow does not fall in May through September.Daylight
In Blackwater, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:59 pm. On the last day of September, sunrise is at 7:27 am and sunset at 7:16 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September in Blackwater is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 4 in September leads to these guidelines:
Take necessary precautions - Suggestions to elude sunburn are provided. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Frequently asked questions
What are September temperatures in Blackwater?
What is the average humidity in September in Blackwater?
What is the driest month in Blackwater?
How many days does it rain in September in Blackwater?
When it does not snow in Blackwater?
Does it snow in Blackwater in September?
How many hours of daylight does Blackwater have in September?
What time are sunrise and sunset in September in Blackwater?
How many hours of sunshine does Blackwater have in September?
What is the UV index reading in September in Blackwater?
Average temperature in September
Blackwater, VA
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (41°F).
- Average low temperature in September: 56.3°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 (26.8°F).
Average pressure in September
Blackwater, VA
- Average pressure in September: 30.05"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Blackwater, VA
- Average wind speed in September: 4mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Blackwater, VA
- Average humidity in September: 77%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are August and November (76%).
Average rainfall in September
Blackwater, VA
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is February (3.78").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Blackwater, VA
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in September
Blackwater, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Blackwater, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Blackwater, 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 12min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Blackwater, VA
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is May (10 days).
Average UV index in September
Blackwater, 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
Blackwater, VA
- Average cloud cover in September: 35
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Blackwater, VA
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Blackwater, Virginia, USA
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