September weather forecastButler, NJ
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Butler, New Jersey, with an average temperature varying between 74.1°F (23.4°C) and 55.9°F (13.3°C).Temperature
The advent of September brings a subtle shift in temperature, with the average high moving from a moderately hot 81.1°F (27.3°C) in August to a still warm 74.1°F (23.4°C). An average low-temperature of 55.9°F (13.3°C) is anticipated throughout the nights in Butler during September.Humidity
The average relative humidity in September is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 8.7 days and accumulates 0.31" (8mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 6:24 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:40 pm EDT.
Sunshine
The average sunshine in September in Butler is 8.2h.UV index
The average daily maximum UV index in September in Butler is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during September leads to these instructions:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Butler, NJ
- Average high temperature in September: 74.1°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).
Average pressure in September
Butler, NJ
- 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 (29.93"Hg).
Average wind speed in September
Butler, NJ
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Butler, NJ
- Average humidity in September: 78%
The months with the highest relative humidity are February, October and December (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Butler, NJ
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is July (1.06").
The driest month (with the least rainfall) is September (0.31").
Average rainfall days in September
Butler, NJ
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in September
Butler, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (0.98").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Butler, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Butler, NJ
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Butler, NJ
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is May (13.9 days).
Average UV index in September
Butler, NJ
- Average UV index in September: 4
The months with the highest UV index are 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
Butler, NJ
- Average cloud cover in September: 42
The months with the most cloud cover are February and March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Butler, NJ
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, August, November and December (6mi).
The months with the lowest visibility are February, May, June, July, September and October (5mi).
