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
Knox Dale's weather subtly changes with the onset of September, barely falling from a warm 78.6°F (25.9°C) in August to an agreeable 72.1°F (22.3°C). During September, Knox Dale's temperature averages to a cool 52.2°F (11.2°C) at night.Humidity
The average relative humidity in September is 80%.Rainfall
In Knox Dale, during September, the rain falls for 12.7 days and regularly aggregates up to 1.73" (44mm) of precipitation. Throughout the year, there are 150.5 rainfall days, and 22.05" (560mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Knox Dale.Daylight
The average length of the day in September in Knox Dale is 12h and 28min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:59 pm EDT.
Sunshine
In Knox Dale, the average sunshine in September is 8.3h.UV index
In Knox Dale, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Undertake precautions - Guarding against sun damage is counselled. Around midday, solar radiation is most harmful; hence, exposure should be limited. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What are September temperatures in Knox Dale?
What is the average humidity in September in Knox Dale?
How much does it rain in Knox Dale in September?
When it does not snow in Knox Dale?
Does it snow in Knox Dale in September?
What is the average length of the day in September in Knox Dale?
When are sunrise and sunset in September in Knox Dale?
How many hours of sunshine does Knox Dale have in September?
What is the UV index reading in September in Knox Dale?
Average temperature in September
Knox Dale, PA
- Average high temperature in September: 72.1°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in September
Knox Dale, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Knox Dale, PA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Knox Dale, PA
- Average humidity in September: 80%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June, July and August (78%).
Average rainfall in September
Knox Dale, PA
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is April (2.56").
The driest month (with the least rainfall) is November (1.26").
Average rainfall days in September
Knox Dale, PA
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in September
Knox Dale, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Knox Dale, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Knox Dale, 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 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Knox Dale, PA
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (15.3 days).
The month with the least sunshine days is February (8.1 days).
Average UV index in September
Knox Dale, 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
Knox Dale, PA
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in September
Knox Dale, PA
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The month with the lowest visibility is February (4mi).
Knox Dale, Pennsylvania, USA
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