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
The transition to September results in a modest reduction in average high-temperature, moving from a moderately hot 79.2°F (26.2°C) in August to an agreeable 71.2°F (21.8°C). The month of September records an average low-temperature of 50.5°F (10.3°C) in North Chatham, New York.Humidity
In North Chatham, the average relative humidity in September is 79%.Rainfall
In North Chatham, in September, during 11.6 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In North Chatham, during the entire year, the rain falls for 151.6 days and collects up to 28.78" (731mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:20 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:37 pm EDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 3 suggests this advice:
Heed the precautions - Suggestions to avoid sunburn are made. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
What are September temperatures in North Chatham?
What is the average humidity in September in North Chatham?
How many days does it rain in September in North Chatham?
When it does not snow in North Chatham?
Does it snow in North Chatham in September?
What is the average length of the day in September in North Chatham?
What time are sunrise and sunset in September in North Chatham?
How long on average sun shines in September in North Chatham?
What is the UV index intensity in September in North Chatham?
Average temperature in September
North Chatham, NY
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in September: 50.5°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in September
North Chatham, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
North Chatham, NY
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are January, February and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
North Chatham, NY
- Average humidity in September: 79%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
North Chatham, NY
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in September
North Chatham, NY
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in September
North Chatham, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
North Chatham, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
North Chatham, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
North Chatham, NY
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in September
North Chatham, NY
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
North Chatham, NY
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in September
North Chatham, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, July, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, August, September and October (5mi).
North Chatham, New York, USA
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