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
A moderate decline in average high-temperatures is noted in September, moving from a warm 76.6°F (24.8°C) in August to an agreeable 70.3°F (21.3°C). The average temperature drops to a chilly 49.8°F (9.9°C) during the night in the month of September.Humidity
In Lewis Run, the average relative humidity in September is 82%.Rainfall
September is the month with the least rainfall. Rain falls for 15.6 days and accumulates 2.17" (55mm) of precipitation.Snowfall
June through September are months without snowfall in Lewis Run.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:11 am and sunset at 6:57 pm EDT.
Sunshine
The average sunshine in September is 8h.UV index
In September, the average daily maximum UV index in Lewis Run is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 3 translates into these guidelines:
Be vigilant - Preventing sunburn is recommended. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Lewis Run have in September?
How high is the UV index in September?
Average temperature in September
Lewis Run, PA
- Average high temperature in September: 70.3°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in September: 49.8°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in September
Lewis Run, 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
Lewis Run, 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 (5.6mph).
Average humidity in September
Lewis Run, PA
- Average humidity in September: 82%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are May, June and July (79%).
Average rainfall in September
Lewis Run, PA
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is April (3.94").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in September
Lewis Run, PA
- Average rainfall days in September: 15.6 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (8 days).
Average snowfall in September
Lewis Run, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (13.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lewis Run, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (23 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 Run, PA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in September
Lewis Run, PA
- Average sunshine days in September: 12.2 days
The month with the most sunshine days is September (12.2 days).
The month with the least sunshine days is January (4.8 days).
Average UV index in September
Lewis Run, PA
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Lewis Run, PA
- Average cloud cover in September: 47
The month with the most cloud cover is January (Cloud cover 79).
The months with the least cloud cover are July and August (Cloud cover 43).
Average visibility in September
Lewis Run, PA
- Average visibility in September: 4mi
The months with the highest visibility are March, April, May, June, July, October and November (5mi).
The months with the lowest visibility are January, February, August, September and December (4mi).
Lewis Run, Pennsylvania, USA
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