September weather forecastLewis Mills, PA
September
Weather in September
September, the first month of the autumn in Lewis Mills, is also a moderately hot month, with an average temperature ranging between min 57.7°F (14.3°C) and max 75°F (23.9°C).Temperature
September sees a slight reduction in average high-temperature, with a shift from a warm 81.1°F (27.3°C) in August to a still moderately hot 75°F (23.9°C). Throughout September, Lewis Mills records an average temperature of 57.7°F (14.3°C) at night.Humidity
In September, the average relative humidity in Lewis Mills is 79%.Rainfall
In Lewis Mills, during September, the rain falls for 12.5 days and regularly aggregates up to 1.89" (48mm) of precipitation. In Lewis Mills, Pennsylvania, during the entire year, the rain falls for 145.6 days and collects up to 26.81" (681mm) of precipitation.Snowfall
In Lewis Mills, snow does not fall in June through September.Daylight
In Lewis Mills, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:34 pm. On the last day of September, in Lewis Mills, sunrise is at 6:59 am and sunset at 6:46 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In Lewis Mills, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 4 in September transforms into this advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. To protect against the Sun's most potent rays, avoid direct exposure around midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lewis Mills, PA
- Average high temperature in September: 75°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in September
Lewis Mills, 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 (29.94"Hg).
Average wind speed in September
Lewis Mills, PA
- Average wind speed in September: 5.6mph
The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Lewis Mills, PA
- Average humidity in September: 79%
The months with the highest relative humidity are February, May and October (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Lewis Mills, PA
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is August (3.31").
The driest month (with the least rainfall) is February (1.61").
Average rainfall days in September
Lewis Mills, PA
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in September
Lewis Mills, PA
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lewis Mills, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lewis Mills, PA
- Average daylight in September: 12h and 24min
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 42min
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 36min).
Average sunshine days in September
Lewis Mills, PA
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in September
Lewis Mills, 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, March, November and December (UV index 2).
Average cloud cover in September
Lewis Mills, PA
- Average cloud cover in September: 39
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Lewis Mills, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
