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
September ushers in a minor alteration in Mahaffey's climate, with the average high-temperature moving from August's moderately hot 79°F (26.1°C) to a pleasant 72.1°F (22.3°C). Mahaffey reports an average nighttime low-temperature of 51.6°F (10.9°C) in September.Humidity
In Mahaffey, the average relative humidity in September is 80%.Rainfall
In September, the rain falls for 11.5 days. Throughout September, 1.46" (37mm) of precipitation is accumulated. Throughout the year, there are 136.6 rainfall days, and 18.54" (471mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Mahaffey.Daylight
In Mahaffey, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:46 pm. On the last day of September, in Mahaffey, sunrise is at 7:11 am and sunset at 6:58 pm EDT.
Sunshine
In Mahaffey, the average sunshine in September is 8h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Guard yourself - Precautionary measures against sun damage are advocated. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
What is the average September temperature in Mahaffey?
What is the average humidity in September in Mahaffey?
How much does it rain in Mahaffey in September?
When it does not snow in Mahaffey?
Does it snow in Mahaffey in September?
How many hours of daylight does Mahaffey have in September?
When is the sunrise / sunset in September in Mahaffey?
How many hours of sunshine does Mahaffey have in September?
How high is the UV index in September in Mahaffey?
Average temperature in September
Mahaffey, PA
- Average high temperature in September: 72.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in September: 51.6°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in September
Mahaffey, 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
Mahaffey, PA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Mahaffey, PA
- Average humidity in September: 80%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is July (77%).
Average rainfall in September
Mahaffey, PA
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is May (2.28").
The driest months (with the least rainfall) are January and November (1.06").
Average rainfall days in September
Mahaffey, PA
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Mahaffey, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mahaffey, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mahaffey, 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 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Mahaffey, PA
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in September
Mahaffey, 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
Mahaffey, PA
- Average cloud cover in September: 45
The month with the most cloud cover is January (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in September
Mahaffey, 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).
Mahaffey, Pennsylvania, USA
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