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
The onset of September entails a subtle temperature shift, as the average high-temperature eases from a moderately hot 83.1°F (28.4°C) in August to a still warm 76.5°F (24.7°C). During September nights, Grundys Corner witnesses a consistent average temperature of 59.9°F (15.5°C).Humidity
The average relative humidity in September in Grundys Corner, Pennsylvania, is 76%.Rainfall
In Grundys Corner, in September, during 12.7 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. Throughout the year, there are 154.4 rainfall days, and 31.38" (797mm) of precipitation is accumulated.Snowfall
In Grundys Corner, snow does not fall in June through October.Daylight
The average length of the day in September in Grundys Corner, Pennsylvania, is 12h and 26min.On the first day of September, sunrise is at 6:27 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:43 pm EDT.
Sunshine
The average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index in Grundys Corner, Pennsylvania, is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Frequently asked questions
What are September temperatures in Grundys Corner?
What is the average humidity in September in Grundys Corner?
How many days does it rain in September in Grundys Corner?
When it does not snow in Grundys Corner?
How many hours of daylight does Grundys Corner have in September?
When is the sunrise / sunset in September in Grundys Corner?
How many hours of sunshine does Grundys Corner have in September?
How high is the UV index in September in Grundys Corner?
Average temperature in September
Grundys Corner, PA
- Average high temperature in September: 76.5°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in September
Grundys Corner, PA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Grundys Corner, PA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in September
Grundys Corner, PA
- Average humidity in September: 76%
The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Grundys Corner, PA
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in September
Grundys Corner, PA
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (8 days).
Average snowfall in September
Grundys Corner, PA
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.99").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Grundys Corner, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Grundys Corner, 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 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Grundys Corner, PA
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in September
Grundys Corner, PA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Grundys Corner, PA
- Average cloud cover in September: 37
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Grundys Corner, PA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Grundys Corner, Pennsylvania, USA
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