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 start of September signals a gentle decrease in the average high-temperature, transitioning from a warm 77.5°F (25.3°C) in August to an agreeable 71.2°F (21.8°C). Retsof encounters a steady low-temperature average of 51.8°F (11°C) throughout the month of September.Humidity
The average relative humidity in September in Retsof is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 7.6 days and accumulates 0.35" (9mm) 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 the month, sunrise is at 6:36 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:54 pm EDT.
Sunshine
In September, the average sunshine is 8.8h.UV index
In September, the average daily maximum UV index in Retsof is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 3 suggests this advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. 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
What are the temperatures in Retsof in September?
What is the average humidity in September in Retsof?
What is the driest month in Retsof?
How much does it rain in Retsof in September?
When it does not snow in Retsof?
Does it snow in Retsof in September?
What is the average length of the day in September in Retsof?
When are sunrise and sunset in September in Retsof?
How long on average sun shines in September in Retsof?
How high is the UV index in September in Retsof?
Average temperature in September
Retsof, NY
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 51.8°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure in September
Retsof, 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 (29.93"Hg).
Average wind speed in September
Retsof, NY
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in September
Retsof, NY
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Retsof, NY
- Average rainfall in September: 0.35"
The wettest month (with the highest rainfall) is July (1.02").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in September
Retsof, NY
- Average rainfall days in September: 7.6 days
The month with the highest number of rainy days is May (12.6 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in September
Retsof, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Retsof, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Retsof, NY
- Average daylight in September: 12h and 3min
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: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 2h and 48min).
Average sunshine days in September
Retsof, NY
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is September (18.5 days).
The months with the least sunshine days are March and April (14 days).
Average UV index in September
Retsof, NY
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Retsof, NY
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Retsof, NY
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
Retsof, New York, USA
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