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
With the beginning of September, the average high-temperature shows a small decrease, transitioning from a warm 81.7°F (27.6°C) in August to a still moderately hot 76.1°F (24.5°C). Tappan registers a consistent average low-temperature of 54.7°F (12.6°C) during September.Humidity
In September, the average relative humidity is 78%.Rainfall
September and November are months with the least rain in Tappan when the rain falls for 15.8 days and typically aggregates up to 2.2" (56mm) of rain.Snowfall
June through September are months without snowfall in Tappan, West Virginia.Daylight
The average length of the day in September in Tappan is 12h and 26min.On the first day of September, sunrise is at 6:49 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:04 pm EDT.
Sunshine
In Tappan, the average sunshine in September is 8.8h.UV index
In Tappan, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Tappan?
What is the average humidity in September in Tappan?
What is the driest month in Tappan?
How much does it rain in Tappan in September?
When it does not snow in Tappan?
Does it snow in Tappan in September?
What is the average length of the day in September in Tappan?
What time are sunrise and sunset in September in Tappan?
How many hours of sunshine does Tappan have in September?
What is the UV index reading in September in Tappan?
Average temperature in September
Tappan, WV
- Average high temperature in September: 76.1°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 (35.6°F).
- Average low temperature in September: 54.7°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in September
Tappan, WV
- 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
Tappan, WV
- Average wind speed in September: 4.5mph
The windiest months (with the highest average wind speed) are January and February (7mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Tappan, WV
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are August and November (77%).
Average rainfall in September
Tappan, WV
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is May (4.41").
The driest months (with the least rainfall) are September and November (2.2").
Average rainfall days in September
Tappan, WV
- Average rainfall days in September: 15.8 days
The month with the highest number of rainy days is May (21.8 days).
The month with the least rainy days is February (10.8 days).
Average snowfall in September
Tappan, WV
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Tappan, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Tappan, WV
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Tappan, WV
- Average sunshine days in September: 11.5 days
The month with the most sunshine days is November (14.7 days).
The month with the least sunshine days is May (7.7 days).
Average UV index in September
Tappan, WV
- Average UV index in September: 4
The months with the highest UV index are May, 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
Tappan, WV
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Tappan, WV
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is January (4mi).
Tappan, West Virginia, USA
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