September weather forecastClarks Mill, NJ
September
Weather in September
September, the first month of the autumn in Clarks Mill, is still a warm month, with an average temperature fluctuating between 74.8°F (23.8°C) and 64.2°F (17.9°C).Temperature
Clarks Mill's September weather features a light decline in high-temperatures, reducing from 81.3°F (27.4°C) in August to a still warm 74.8°F (23.8°C). Clarks Mill's temperature tends to fall to an average low of 64.2°F (17.9°C) during the nights of September.Humidity
In September, the average relative humidity is 77%.Rainfall
In September, the rain falls for 11.8 days. Throughout September, 1.73" (44mm) of precipitation is accumulated. In Clarks Mill, during the entire year, the rain falls for 144.2 days and collects up to 27.48" (698mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day in Clarks Mill, New Jersey, is 12h and 26min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:53 am and sunset at 6:41 pm EDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
In Clarks Mill, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 5 during September translates into the following directions:
Undertake protective steps - Recommendations to avoid sunburn are issued. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Clarks Mill, NJ
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in September: 64.2°F
The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in September
Clarks Mill, NJ
- Average pressure in September: 30.04"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
Clarks Mill, NJ
- Average wind speed in September: 8.3mph
The windiest months (with the highest average wind speed) are January and February (10.6mph).
The calmest month (with the lowest average wind speed) is August (7.2mph).
Average humidity in September
Clarks Mill, NJ
- Average humidity in September: 77%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Clarks Mill, NJ
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is August (2.91").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in September
Clarks Mill, NJ
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (16.1 days).
The months with the least rainy days are January and November (8.3 days).
Average snowfall in September
Clarks Mill, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.97").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Clarks Mill, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Clarks Mill, NJ
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Clarks Mill, NJ
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in September
Clarks Mill, NJ
- Average UV index in September: 5
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 and December (UV index 2).
Average cloud cover in September
Clarks Mill, NJ
- Average cloud cover in September: 33
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Clarks Mill, NJ
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
