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
In September, the meteorological conditions change slightly, with the average high-temperature moving from 81.9°F (27.7°C) in August to a still warm 75.4°F (24.1°C). During September, Roosevelt witnesses a consistent average low-temperature of 60.4°F (15.8°C).Humidity
In September, the average relative humidity is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 13.4 days and accumulates 1.69" (43mm) of precipitation.Snowfall
In Roosevelt, snow does not fall in June through October.Daylight
The average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:26 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:41 pm EDT.
Sunshine
In September, the average sunshine in Roosevelt is 8.8h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September in Roosevelt?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Roosevelt, NJ
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in September: 60.4°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in September
Roosevelt, NJ
- Average pressure in September: 30.05"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
Roosevelt, NJ
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Roosevelt, NJ
- Average humidity in September: 78%
The months with the highest relative humidity are June and October (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Roosevelt, NJ
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is July (3.5").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in September
Roosevelt, NJ
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in September
Roosevelt, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.23").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Roosevelt, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.3 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
Roosevelt, NJ
- Average daylight in September: 12h and 2min
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 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Roosevelt, NJ
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Roosevelt, 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, March, November and December (UV index 2).
Average cloud cover in September
Roosevelt, NJ
- Average cloud cover in September: 36
The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in September
Roosevelt, 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).
Roosevelt, New Jersey, USA
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