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 sea temperature 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
September signifies a minor drop in average high-temperature, transitioning from a moderately hot 75.6°F (24.2°C) in August to a pleasant 69.1°F (20.6°C). An average nighttime temperature of 54.1°F (12.3°C) is noted during the month of September.Humidity
The months with the lowest humidity in Dexter are April and September, with an average relative humidity of 77%.Rainfall
September is the month with the least rainfall in Dexter. Rain falls for 9.7 days and accumulates 0.94" (24mm) of precipitation.Snowfall
May through September are months without snowfall.Ocean temperature
In Dexter, in September, the average water temperature is 66°F (18.9°C).Note: Swimming in water that is 66°F (18.9°C) is not enjoyable for most. Breathing becomes more challenging to manage as the water temperature dips from 69.8°F (21°C) to 59°F (15°C).
Daylight
The average length of the day in September is 12h and 30min.On the first day of September in Dexter, sunrise is at 6:28 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:46 pm EDT.
Sunshine
The average sunshine in September in Dexter is 9.1h.UV index
In Dexter, New York, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the average maximum UV index of 3 translates into the following recommendations:
Be vigilant - Preventing sunburn is recommended. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
What are September temperatures in Dexter?
What are the least humid months in Dexter?
What is the average humidity in September in Dexter?
What is the driest month in Dexter?
How many days does it rain in September in Dexter?
When it does not snow in Dexter?
Does it snow in Dexter in September?
What is the ocean temperature in September in Dexter?
What is the average length of the day in September in Dexter?
What time are sunrise and sunset in September in Dexter?
How many hours of sunshine does Dexter have in September?
What is the UV index reading in September in Dexter?
Average temperature in September
Dexter, NY
- Average high temperature in September: 69.1°F
The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in September
Dexter, NY
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Dexter, NY
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in September
Dexter, NY
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and September (77%).
Average rainfall in September
Dexter, NY
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is September (0.94").
Average rainfall days in September
Dexter, NY
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is October (15.5 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in September
Dexter, NY
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Dexter, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Dexter, NY
- Average sea temperature in September: 66.1°F
The best month for swimming (with the highest average sea temperature) is August (70.1°F).
The coldest month (with the lowest average sea temperature) is March (35.5°F).
Average daylight in September /
Average sunshine in September
Dexter, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Dexter, NY
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is September (18.7 days).
The month with the least sunshine days is January (11.1 days).
Average UV index in September
Dexter, 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
Dexter, NY
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in September
Dexter, NY
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Dexter, New York, USA
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