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
September reveals a small adjustment in temperature, transitioning from an average high of a moderately hot 76.1°F (24.5°C) in August to an agreeable 70°F (21.1°C). The average nighttime temperature lowers to a cool 52.3°F (11.3°C) throughout September.Humidity
The average relative humidity in September is 79%.Rainfall
March and September are months with the least rain when the rain falls for 13.6 days and typically aggregates up to 1.61" (41mm) of rain.Snowfall
June through September are months without snowfall.Daylight
In Constantia, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:46 pm EDT.
Sunshine
The average sunshine in September is 9h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Undertake precautions - Guarding against sun damage is counselled. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September in Constantia?
When is the sunrise / sunset in September in Constantia?
How long on average sun shines in September?
What is the UV index intensity in September in Constantia?
Average temperature in September
Constantia, NY
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in September
Constantia, 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
Constantia, NY
- Average wind speed in September: 6.4mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.9mph).
Average humidity in September
Constantia, NY
- Average humidity in September: 79%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is April (78%).
Average rainfall in September
Constantia, NY
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is May (2.64").
The driest months (with the least rainfall) are March and September (1.61").
Average rainfall days in September
Constantia, NY
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in September
Constantia, NY
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Constantia, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Constantia, 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 0min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).
Average sunshine days in September
Constantia, NY
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (5.2 days).
Average UV index in September
Constantia, NY
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Constantia, NY
- Average cloud cover in September: 35
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 33).
Average visibility in September
Constantia, NY
- Average visibility in September: 6mi
The months with the highest visibility are April, May, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, June, July and December (5mi).
Constantia, New York, USA
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