September weather forecastYork Haven, PA
September
Weather in September
September, the first month of the autumn in York Haven, is still a warm month, with an average temperature ranging between max 74.7°F (23.7°C) and min 56.3°F (13.5°C).Temperature
With the onset of September, York Haven's climate undergoes a slight change as the average high-temperature moves from a warm 81°F (27.2°C) in August to a still moderately hot 74.7°F (23.7°C). The temperature dips to an average of 56.3°F (13.5°C) during September nights.Humidity
In September, the average relative humidity in York Haven is 79%.Rainfall
In York Haven, during September, the rain falls for 10.5 days and regularly aggregates up to 1.22" (31mm) of precipitation. Throughout the year, there are 134.1 rainfall days, and 17.83" (453mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 26min.On the first day of September in York Haven, sunrise is at 6:35 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:50 pm EDT.
Sunshine
In September, the average sunshine in York Haven, Pennsylvania, is 8.9h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Ensure safety - Sun damage prevention is strongly urged. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
York Haven, PA
- Average high temperature in September: 74.7°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in September
York Haven, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
York Haven, PA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
York Haven, PA
- Average humidity in September: 79%
The months with the highest relative humidity are February, May and October (80%).
The months with the lowest relative humidity are March and April (76%).
Average rainfall in September
York Haven, PA
- Average rainfall in September: 1.22"
The wettest months (with the highest rainfall) are July and August (2.01").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in September
York Haven, PA
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is January (6 days).
Average snowfall in September
York Haven, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
York Haven, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
York Haven, PA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
York Haven, PA
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in September
York Haven, PA
- Average UV index in September: 4
The months with the highest UV index are May, 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
York Haven, PA
- Average cloud cover in September: 38
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
York Haven, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
