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
September's onset brings a negligible change in high-temperatures, falling from a moderately hot 76.6°F (24.8°C) in August to a pleasant 70.2°F (21.2°C). September is noted for a mean low-temperature of 50.9°F (10.5°C).Humidity
The average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall in Portageville. Rain falls for 13.9 days and accumulates 1.42" (36mm) of precipitation.Snowfall
In Portageville, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of September in Portageville, sunrise is at 6:37 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:54 pm EDT.
Sunshine
In Portageville, the average sunshine in September is 8.6h.UV index
In Portageville, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 3 in September translates into these instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
What is the usual temperature for Portageville in September?
What is the average humidity in September in Portageville?
What is the driest month in Portageville?
How many days does it rain in September in Portageville?
When it does not snow in Portageville?
Does it snow in Portageville in September?
How many hours of daylight does Portageville have in September?
When is the sunrise / sunset in September in Portageville?
How many hours of sunshine does Portageville have in September?
How high is the UV index in September in Portageville?
Average temperature in September
Portageville, NY
- Average high temperature in September: 70.2°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in September
Portageville, NY
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Portageville, NY
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in September
Portageville, NY
- Average humidity in September: 80%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Portageville, NY
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is October (2.64").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in September
Portageville, NY
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (7 days).
Average snowfall in September
Portageville, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Portageville, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Portageville, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in September
Portageville, NY
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is September (14.1 days).
The month with the least sunshine days is February (6.4 days).
Average UV index in September
Portageville, NY
- Average UV index in September: 3
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 and December (UV index 1).
Average cloud cover in September
Portageville, NY
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Portageville, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, May and June (6mi).
The month with the lowest visibility is January (4mi).
Portageville, New York, USA
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