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
Delphi's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's moderately hot 78.6°F (25.9°C) to a pleasant 72.9°F (22.7°C). Delphi witnesses an average low-temperature of 52.3°F (11.3°C) throughout the month of September.Humidity
In Delphi, West Virginia, the average relative humidity in September is 81%.Rainfall
September is the month with the least rainfall in Delphi. Rain falls for 16.8 days and accumulates 2.13" (54mm) of precipitation.Snowfall
In Delphi, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 25min.On the first day of September in Delphi, sunrise is at 6:52 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:06 pm EDT.
Sunshine
In September, the average sunshine in Delphi is 8.4h.UV index
In September, the average daily maximum UV index in Delphi is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What are the temperatures in Delphi in September?
What is the average humidity in September in Delphi?
What is the driest month in Delphi?
How much does it rain in Delphi in September?
When it does not snow in Delphi?
Does it snow in Delphi in September?
What is the average length of the day in September in Delphi?
When are sunrise and sunset in September in Delphi?
How long on average sun shines in September in Delphi?
What is the UV index intensity in September in Delphi?
Average temperature in September
Delphi, WV
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Delphi, 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
Delphi, WV
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Delphi, WV
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are June, July and November (79%).
Average rainfall in September
Delphi, WV
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in September
Delphi, WV
- Average rainfall days in September: 16.8 days
The month with the highest number of rainy days is May (23.4 days).
The month with the least rainy days is January (11.4 days).
Average snowfall in September
Delphi, WV
- Average snowfall in September: 0"
The month with the highest snowfall is February (8.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Delphi, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Delphi, WV
- Average daylight in September: 12h and 2min
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 30min).
- Average sunshine in September: 8h and 2min
The months with the most sunshine are June and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Delphi, WV
- Average sunshine days in September: 9.8 days
The month with the most sunshine days is October (14.6 days).
The month with the least sunshine days is May (5.9 days).
Average UV index in September
Delphi, WV
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Delphi, WV
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in September
Delphi, WV
- Average visibility in September: 4mi
The months with the highest visibility are March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February and September (4mi).
Delphi, West Virginia, USA
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