September weather forecastJeffrey, WV
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Jeffrey, West Virginia, with an average temperature fluctuating between 56.5°F (13.6°C) and 77.9°F (25.5°C).Temperature
Jeffrey observes a small decrease in the average high-temperature with the arrival of September, falling from August's 84°F (28.9°C) to a still warm 77.9°F (25.5°C). The average temperature during September nights is registered at a moderate 56.5°F (13.6°C).Humidity
The average relative humidity in September in Jeffrey is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.8 days and typically collects 1.77" (45mm) of precipitation.Snowfall
In Jeffrey, snow does not fall in May through September.Daylight
In Jeffrey, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:57 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:11 pm EDT.
Sunshine
In September, the average sunshine in Jeffrey is 8.1h.UV index
In Jeffrey, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 4 during September leads to these advisories:
Act with care - The suggestion to avoid sunburn is emphasized. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Jeffrey, WV
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in September: 56.5°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in September
Jeffrey, WV
- 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 (29.98"Hg).
Average wind speed in September
Jeffrey, WV
- Average wind speed in September: 4.3mph
The windiest months (with the highest average wind speed) are January and February (6.6mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in September
Jeffrey, WV
- Average humidity in September: 78%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are June, July, August and November (76%).
Average rainfall in September
Jeffrey, WV
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in September
Jeffrey, WV
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is May (20.6 days).
The month with the least rainy days is November (10.9 days).
Average snowfall in September
Jeffrey, WV
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (5.12").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Jeffrey, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Jeffrey, WV
- Average daylight in September: 12h and 24min
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 6min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Jeffrey, WV
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is February (8.7 days).
Average UV index in September
Jeffrey, WV
- 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
Jeffrey, WV
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Jeffrey, WV
- 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).
