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 arrival of September correlates with a minor temperature reduction, down from August's moderately hot 78.3°F (25.7°C) to a pleasant 72°F (22.2°C). During September nights, Swiftwater records an average temperature of 52.5°F (11.4°C).Humidity
In September, the average relative humidity is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.73" (44mm) of precipitation.Snowfall
June through September are months without snowfall in Swiftwater.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 6:28 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:44 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Frequently asked questions
What are September temperatures in Swiftwater?
What is the average humidity in September in Swiftwater?
What is the driest month in Swiftwater?
How much does it rain in Swiftwater in September?
When it does not snow in Swiftwater?
Does it snow in Swiftwater in September?
How many hours of daylight does Swiftwater have in September?
When is the sunrise / sunset in September in Swiftwater?
How long on average sun shines in September in Swiftwater?
What is the UV index intensity in September in Swiftwater?
Average temperature in September
Swiftwater, PA
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in September: 52.5°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in September
Swiftwater, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Swiftwater, PA
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Swiftwater, PA
- Average humidity in September: 80%
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is July (77%).
Average rainfall in September
Swiftwater, PA
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Swiftwater, PA
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in September
Swiftwater, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (9.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Swiftwater, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Swiftwater, 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in September
Swiftwater, PA
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is February (8.6 days).
Average UV index in September
Swiftwater, PA
- Average UV index in September: 4
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
Swiftwater, PA
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Swiftwater, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Swiftwater, Pennsylvania, USA
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