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
Riner's progression into September involves a gentle drop in the average high-temperature, from a warm 81.5°F (27.5°C) in August to a still moderately hot 75°F (23.9°C). During September, Riner experiences an average low-temperature of 53.8°F (12.1°C) at night.Humidity
The average relative humidity in September is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.2 days and typically collects 1.34" (34mm) of precipitation.Snowfall
In Riner, Virginia, snow does not fall in June through September.Daylight
In Riner, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:53 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:06 pm EDT.
Sunshine
In September, the average sunshine is 8.1h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 4 during September translates into these guidelines:
Take necessary precautions - Suggestions to elude sunburn are provided. Direct Sun exposure should be minimized especially during midday when radiation is most intense. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Riner in September?
What is the average humidity in September in Riner?
What is the driest month in Riner?
How much does it rain in Riner in September?
When it does not snow in Riner?
Does it snow in Riner in September?
How many hours of daylight does Riner have in September?
What time are sunrise and sunset in September in Riner?
How long on average sun shines in September in Riner?
How high is the UV index in September in Riner?
Average temperature in September
Riner, VA
- Average high temperature in September: 75°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in September: 53.8°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Riner, VA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Riner, VA
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are January and February (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Riner, VA
- Average humidity in September: 79%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are April, June, July and November (76%).
Average rainfall in September
Riner, VA
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in September
Riner, VA
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Riner, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Riner, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Riner, 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 42min).
- Average sunshine in September: 8h and 1min
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 54min).
Average sunshine days in September
Riner, VA
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (9.7 days).
Average UV index in September
Riner, VA
- Average UV index in September: 4
The months with the highest UV index are 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
Riner, VA
- Average cloud cover in September: 44
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 36).
Average visibility in September
Riner, VA
- Average visibility in September: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
Riner, Virginia, USA
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