September weather forecastMattydale, NY
September
Weather in September
September, the first month of the autumn in Mattydale, is also an agreeable month, with an average temperature fluctuating between 70°F (21.1°C) and 52.5°F (11.4°C).Temperature
As September begins, there is a minor decrease in the average high-temperature, softly falling from a warm 76.3°F (24.6°C) in August to a pleasant 70°F (21.1°C). During September, the temperature tends to dip to an average of 52.5°F (11.4°C) at night.Humidity
In Mattydale, New York, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 14.1 days and accumulates 1.73" (44mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Mattydale, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:29 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:47 pm EDT.
Sunshine
In Mattydale, the average sunshine in September is 9h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mattydale, NY
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in September: 52.5°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in September
Mattydale, NY
- Average pressure in September: 30.05"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
Mattydale, NY
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in September
Mattydale, NY
- Average humidity in September: 79%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is April (78%).
Average rainfall in September
Mattydale, NY
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Mattydale, NY
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is August (17.6 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in September
Mattydale, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.1").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mattydale, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mattydale, NY
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).
Average sunshine days in September
Mattydale, NY
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (5.3 days).
Average UV index in September
Mattydale, 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, February and December (UV index 1).
Average cloud cover in September
Mattydale, NY
- Average cloud cover in September: 34
The months with the most cloud cover are January and February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Mattydale, NY
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
