September weather forecastDauphin, PA
September
Weather in September
September, the first month of the autumn in Dauphin, is also a moderately hot month, with an average temperature varying between 54.9°F (12.7°C) and 74.3°F (23.5°C).Temperature
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's 81.5°F (27.5°C) to a still moderately hot 74.3°F (23.5°C). An average low-temperature of 54.9°F (12.7°C) is common during the nights of September.Humidity
In September, the average relative humidity is 78%.Rainfall
In Dauphin, in September, it is raining for 12.8 days, with typically 2.28" (58mm) of accumulated precipitation. In Dauphin, Pennsylvania, during the entire year, the rain falls for 161.8 days and collects up to 30.71" (780mm) of precipitation.Snowfall
June through September are months without snowfall in Dauphin.Daylight
In Dauphin, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:51 pm EDT.
Sunshine
In September, the average sunshine is 8.8h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dauphin, PA
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in September: 54.9°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 (21.6°F).
Average pressure in September
Dauphin, 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
Dauphin, PA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Dauphin, PA
- Average humidity in September: 78%
The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are March and April (75%).
Average rainfall in September
Dauphin, PA
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days in September
Dauphin, PA
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (8.8 days).
Average snowfall in September
Dauphin, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Dauphin, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dauphin, 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 18min).
- Average sunshine in September: 8h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Dauphin, PA
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in September
Dauphin, PA
- Average UV index in September: 4
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Dauphin, PA
- Average cloud cover in September: 38
The months with the most cloud cover are February and December (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Dauphin, PA
- Average visibility in September: 5mi
The months with the highest visibility are March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are January, February, May and September (5mi).
