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
In Lemont Furnace, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's warm 80.6°F (27°C) to a still moderately hot 74.5°F (23.6°C). Lemont Furnace records an average low of 54.1°F (12.3°C) throughout the nights in September.Humidity
April, June through September and November, with an average relative humidity of 78%, are the least humid months.Rainfall
In Lemont Furnace, in September, during 15.3 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 168.2 rainfall days, and 29.8" (757mm) of precipitation is accumulated.Snowfall
In Lemont Furnace, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 6:47 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:02 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September in Lemont Furnace is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What are the least humid months?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Lemont Furnace have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Lemont Furnace, PA
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in September
Lemont Furnace, PA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Lemont Furnace, PA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Lemont Furnace, PA
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, June, July, August, September and November (78%).
Average rainfall in September
Lemont Furnace, PA
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is May (3.7").
The driest month (with the least rainfall) is November (1.3").
Average rainfall days in September
Lemont Furnace, PA
- Average rainfall days in September: 15.3 days
The month with the highest number of rainy days is May (20.2 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in September
Lemont Furnace, 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
Lemont Furnace, PA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lemont Furnace, PA
- Average daylight in September: 12h and 2min
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 4min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Lemont Furnace, PA
- Average sunshine days in September: 13 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (8.9 days).
Average UV index in September
Lemont Furnace, PA
- Average UV index in September: 4
The month with the highest UV index is July (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
Lemont Furnace, PA
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Lemont Furnace, 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).
Lemont Furnace, Pennsylvania, USA
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