September weather forecastGillette, NJ
September
Weather in September
September, the first month of the autumn in Gillette, is also a moderately hot month, with an average temperature varying between 75.2°F (24°C) and 58.5°F (14.7°C).Temperature
As August transitions into September, Gillette sees a gentle drop in the average high-temperature, transitioning from a moderately hot 82°F (27.8°C) to a still warm 75.2°F (24°C). Gillette observes an average nighttime temperature of 58.5°F (14.7°C) during September.Humidity
In September, the average relative humidity in Gillette is 76%.Rainfall
The month with the least rainfall in Gillette is September, when the rain falls for 13.1 days and typically collects 1.69" (43mm) of precipitation.Snowfall
In Gillette, snow does not fall in June through September.Daylight
In Gillette, the average length of the day in September is 12h and 27min.On the first day of September in Gillette, 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
The average sunshine in September is 8.6h.UV index
In Gillette, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Act with care - The need to guard against sun damage is communicated. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Gillette, 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
Gillette, 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
Gillette, 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
Gillette, 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
Gillette, 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
Gillette, 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
Gillette, 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
Gillette, 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
Gillette, NJ
- Average daylight in September: 12h and 30min
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 36min
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
Gillette, 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
Gillette, 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
Gillette, 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
Gillette, 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).
