September weather forecastSummit Hill, PA
September
Weather in September
September, the first month of the autumn in Summit Hill, is still a pleasant month, with an average temperature varying between 53.6°F (12°C) and 72.5°F (22.5°C).Temperature
With the onset of September, Summit Hill's average high-temperature slightly adjusts, moderately receding from August's moderately hot 78.4°F (25.8°C) to an agreeable 72.5°F (22.5°C). Summit Hill experiences a mean low-temperature of 53.6°F (12°C) during September.Humidity
In September, the average relative humidity is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 13.1 days and accumulates 2.01" (51mm) of precipitation.Snowfall
In Summit Hill, 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 the month, sunrise is at 6:31 am and sunset at 7:35 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:46 pm EDT.
Sunshine
In Summit Hill, the average sunshine in September is 8.7h.UV index
In Summit Hill, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In September, a daily UV index of 4 turns into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. It's recommended to limit sun exposure when its radiation is at its peak during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Summit Hill, PA
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in September
Summit Hill, 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
Summit Hill, PA
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Summit Hill, PA
- Average humidity in September: 80%
The months with the highest relative humidity are February and December (83%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Summit Hill, PA
- Average rainfall in September: 2.01"
The wettest months (with the highest rainfall) are May, July and August (3.19").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Summit Hill, PA
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (9.6 days).
Average snowfall in September
Summit Hill, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.93").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Summit Hill, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Summit Hill, 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 42min
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 12min).
Average sunshine days in September
Summit Hill, PA
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is November (15.7 days).
The month with the least sunshine days is May (9.7 days).
Average UV index in September
Summit Hill, PA
- Average UV index in September: 4
The month with the highest UV index is 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
Summit Hill, PA
- Average cloud cover in September: 40
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Summit Hill, PA
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
