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
Summit Hill's progression into September involves a gentle drop in the average high-temperature, from a warm 78.4°F (25.8°C) in August to a pleasant 72.5°F (22.5°C). In September, Summit Hill experiences a temperature dip to an average of 53.6°F (12°C) at night.Humidity
In Summit Hill, the average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall in Summit Hill, Pennsylvania. 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, in Summit Hill, sunrise is at 6:59 am and sunset at 6:46 pm EDT.
Sunshine
The average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What is the temperature in September in Summit Hill?
What is the average humidity in September in Summit Hill?
What is the driest month in Summit Hill?
How much does it rain in Summit Hill in September?
When it does not snow in Summit Hill?
Does it snow in Summit Hill in September?
What is the average length of the day in September in Summit Hill?
What time are sunrise and sunset in September in Summit Hill?
How many hours of sunshine does Summit Hill have in September?
How high is the UV index in September in Summit Hill?
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 3min
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 4min
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).
Summit Hill, Pennsylvania, USA
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