September weather forecastSalem, NJ
September
Weather in September
The first month of the autumn, September, is still a warm month in Salem, New Jersey, with an average temperature fluctuating between 77°F (25°C) and 61.2°F (16.2°C).Temperature
September ushers in a minor alteration in Salem's climate, with the average high-temperature moving from August's warm 83.5°F (28.6°C) to a still moderately hot 77°F (25°C). Throughout September, Salem's nights cool down to an average of 61.2°F (16.2°C).Humidity
May, June, September and October, with an average relative humidity of 77%, are the most humid months in Salem.Rainfall
In Salem, during September, the rain falls for 11.9 days and regularly aggregates up to 1.85" (47mm) of precipitation. In Salem, New Jersey, during the entire year, the rain falls for 147.7 days and collects up to 27.8" (706mm) of precipitation.Snowfall
In Salem, snow does not fall in June through October.Daylight
The average length of the day in September is 12h and 26min.On the first day of September in Salem, sunrise is at 6:30 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:45 pm EDT.
Sunshine
In Salem, the average sunshine in September is 9.1h.UV index
In Salem, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 5 suggests this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Salem, NJ
- Average high temperature in September: 77°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in September: 61.2°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in September
Salem, NJ
- Average pressure in September: 30.05"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
Salem, NJ
- Average wind speed in September: 6.2mph
The windiest months (with the highest average wind speed) are February, March and April (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Salem, NJ
- Average humidity in September: 77%
The months with the highest relative humidity are May, June, September and October (77%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Salem, NJ
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is August (3.23").
The driest month (with the least rainfall) is January (1.77").
Average rainfall days in September
Salem, NJ
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is November (8 days).
Average snowfall in September
Salem, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.32").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Salem, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Salem, 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
Salem, NJ
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is November (20.6 days).
The months with the least sunshine days are May and July (11.8 days).
Average UV index in September
Salem, 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
Salem, NJ
- Average cloud cover in September: 36
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Salem, 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).
