September weather forecastState College, PA
September
Weather in September
State College's weather in September initiates the transition from the heat of August to the cooler autumn season. Even though the coming October continues this diminishing trend, September marks the initial relief from summer. The unique drop in temperature this month reaches lows of 52.2°F (11.2°C). With the leaves changing color, and autumn festivals starting up, September ushers in a delightful season change. To make the most of these temperate conditions, locals often embark on popular fall activities such as apple picking and leaf peeping.Temperature
With the arrival of September, State College notices a mild change in the average high-temperature, sliding from August's moderately hot 79.9°F (26.6°C) to an agreeable 72.5°F (22.5°C). In State College, the average temperature during the nights of September drops to a fresh 52.2°F (11.2°C).Humidity
The average relative humidity in September is 80%.Rainfall
In September, the rain falls for 13.8 days. Throughout September, 2.24" (57mm) of precipitation is accumulated. In State College, during the entire year, the rain falls for 175.7 days and collects up to 30.94" (786mm) of precipitation.Snowfall
In State College, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 27min.On the first day of September in State College, sunrise is at 6:39 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:54 pm EDT.
Sunshine
In State College, the average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
State College, PA
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in September
State College, 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 (29.95"Hg).
Average wind speed in September
State College, PA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
State College, PA
- Average humidity in September: 80%
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is July (76%).
Average rainfall in September
State College, PA
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is November (2.01").
Average rainfall days in September
State College, PA
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is February (9.8 days).
Average snowfall in September
State College, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.77").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
State College, PA
- 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
State College, PA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
State College, PA
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is November (14.5 days).
The month with the least sunshine days is February (8.5 days).
Average UV index in September
State College, PA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
State College, PA
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
State College, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
