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
During the shift to September, a minor reduction in average high-temperature is observed, shifting from 81.3°F (27.4°C) in August to a still moderately hot 74.8°F (23.8°C). In the month of September, Pomona experiences an average low-temperature of 64.2°F (17.9°C).Humidity
In Pomona, the average relative humidity in September is 77%.Rainfall
In Pomona, in September, during 11.8 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. Throughout the year, there are 144.2 rainfall days, and 27.48" (698mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:54 am and sunset at 6:41 pm EDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during September leads to these instructions:
Put precautions into practice - Protective measures against sun-induced damage are advised. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Pomona in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Pomona, 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
Pomona, 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
Pomona, 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
Pomona, 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
Pomona, 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
Pomona, 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
Pomona, 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
Pomona, 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
Pomona, NJ
- Average daylight in September: 12h and 2min
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 1min
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
Pomona, 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
Pomona, 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
Pomona, 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
Pomona, 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).
Pomona, New Jersey, USA
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