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 arrival of September corresponds with a minor reduction in the average high-temperature, down from August's tropical 86.9°F (30.5°C) to a warm 80.1°F (26.7°C). During September nights, Columbia records an average temperature of 59.4°F (15.2°C).Humidity
In Columbia, the average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.57" (40mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Columbia, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:43 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:56 pm EDT.
Sunshine
The average sunshine in September in Columbia is 8.7h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Columbia?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow in Columbia?
How many hours of daylight does Columbia have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Columbia have in September?
What is the UV index intensity in September?
Average temperature in September
Columbia, VA
- Average high temperature in September: 80.1°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (43°F).
- Average low temperature in September: 59.4°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in September
Columbia, 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
Columbia, VA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Columbia, VA
- Average humidity in September: 75%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (69%).
Average rainfall in September
Columbia, VA
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is April (2.76").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in September
Columbia, VA
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in September
Columbia, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Columbia, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.8 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
Columbia, VA
- Average daylight in September: 12h and 2min
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 4min
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
Columbia, VA
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is May (13.1 days).
Average UV index in September
Columbia, 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, November and December (UV index 2).
Average cloud cover in September
Columbia, VA
- Average cloud cover in September: 39
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
Columbia, VA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October and November (6mi).
The months with the lowest visibility are May, September and December (5mi).
Columbia, Virginia, USA
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