September weather forecastRio Grande, NJ
September
Weather in September
September, the first month of the autumn in Rio Grande, is still a warm month, with temperature in the range of an average high of 73.4°F (23°C) and an average low of 67.8°F (19.9°C).Temperature
The transition into September is marked with an average high-temperature of a still moderately hot 73.4°F (23°C), showing an insignificant shift from August's 78.6°F (25.9°C). A slight dip in temperature to a refreshing 67.8°F (19.9°C) marks the average nights during September.Humidity
In Rio Grande, New Jersey, the average relative humidity in September is 77%.Rainfall
In Rio Grande, during September, the rain falls for 12.7 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, there are 158 rainfall days, and 35.47" (901mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
In Rio Grande, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:43 pm EDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In Rio Grande, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Exercise prevention - Warding off sunburn is urged. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rio Grande, NJ
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in September: 67.8°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (32.2°F).
Average pressure in September
Rio Grande, NJ
- Average pressure in September: 30.04"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
Rio Grande, NJ
- Average wind speed in September: 10.9mph
The windiest month (with the highest average wind speed) is January (13.5mph).
The calmest month (with the lowest average wind speed) is July (9.2mph).
Average humidity in September
Rio Grande, NJ
- Average humidity in September: 77%
The month with the highest relative humidity is May (82%).
The month with the lowest relative humidity is November (73%).
Average rainfall in September
Rio Grande, NJ
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days in September
Rio Grande, NJ
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in September
Rio Grande, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is December (1.06").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Rio Grande, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Rio Grande, 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 30min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Rio Grande, NJ
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is November (18.9 days).
The months with the least sunshine days are May and June (12.5 days).
Average UV index in September
Rio Grande, NJ
- Average UV index in September: 5
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 and December (UV index 2).
Average cloud cover in September
Rio Grande, NJ
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Rio Grande, 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).
