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
With the arrival of September, Stirling notices a mild change in the average high-temperature, sliding from August's moderately hot 82°F (27.8°C) to a still warm 75.2°F (24°C). Throughout the month of September, Stirling witnesses an average low-temperature of 58.5°F (14.7°C).Humidity
In Stirling, the average relative humidity in September is 76%.Rainfall
September is the month with the least rainfall. Rain falls for 13.1 days and accumulates 1.69" (43mm) of precipitation.Snowfall
In Stirling, New Jersey, snow does not fall in June through September.Daylight
In Stirling, the average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:25 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:41 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Stirling, NJ
- Average high temperature in September: 75.2°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
Stirling, 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
Stirling, NJ
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Stirling, NJ
- Average humidity in September: 76%
The months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Stirling, NJ
- Average rainfall in September: 1.69"
The wettest months (with the highest rainfall) are July and December (3.11").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in September
Stirling, NJ
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in September
Stirling, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Stirling, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stirling, NJ
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Stirling, NJ
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in September
Stirling, 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
Stirling, NJ
- Average cloud cover in September: 38
The month with the most cloud cover is March (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in September
Stirling, NJ
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Stirling, New Jersey, USA
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