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
With the commencement of September, Summerhill records a moderate temperature decline, with the average high easing from August's warm 78.3°F (25.7°C) to a pleasant 72°F (22.2°C). During September nights, Summerhill records an average temperature of 52.7°F (11.5°C).Humidity
In Summerhill, Pennsylvania, the average relative humidity in September is 80%.Rainfall
In Summerhill, in September, it is raining for 14.6 days, with typically 2.24" (57mm) of accumulated precipitation. In Summerhill, Pennsylvania, during the entire year, the rain falls for 165.8 days and collects up to 29.84" (758mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Summerhill, the average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:43 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:58 pm EDT.
Sunshine
In September, the average sunshine in Summerhill is 8.3h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 3 in September leads to these recommendations:
Make use of precautions - It is urged to ward off sun damage. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Frequently asked questions
What is the usual temperature for Summerhill in September?
What is the average humidity in September in Summerhill?
How many days does it rain in September in Summerhill?
When it does not snow in Summerhill?
Does it snow in Summerhill in September?
How many hours of daylight does Summerhill have in September?
What time are sunrise and sunset in September in Summerhill?
How long on average sun shines in September in Summerhill?
How high is the UV index in September in Summerhill?
Average temperature in September
Summerhill, PA
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in September
Summerhill, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Summerhill, PA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Summerhill, PA
- Average humidity in September: 80%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and July (78%).
Average rainfall in September
Summerhill, PA
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is November (1.61").
Average rainfall days in September
Summerhill, PA
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is December (8.8 days).
Average snowfall in September
Summerhill, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.34").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Summerhill, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Summerhill, PA
- Average daylight in September: 12h and 2min
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 2min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Summerhill, PA
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (9.7 days).
Average UV index in September
Summerhill, PA
- Average UV index in September: 3
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
Summerhill, PA
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in September
Summerhill, 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).
Summerhill, Pennsylvania, USA
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