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
September
Weather in September
Temperature
In the transition to September, Watervliet observes a minor drop in the average high-temperature, shifting from a warm 79.3°F (26.3°C) in August to a pleasant 71.4°F (21.9°C). Watervliet's nighttime temperature during September is consistently averaged at a cool 51.3°F (10.7°C).Humidity
In September, the average relative humidity is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 10.7 days and accumulates 1.93" (49mm) of precipitation.Snowfall
In Watervliet, snow does not fall in June through September.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 9.1h.UV index
In September, the average daily maximum UV index in Watervliet is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Take precautions - Protection against sunburn is recommended. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Watervliet have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Watervliet have in September?
What is the UV index intensity in September?
Average temperature in September
Watervliet, NY
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 51.3°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
Watervliet, 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
Watervliet, NY
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are January, February and March (8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Watervliet, NY
- Average humidity in September: 78%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Watervliet, NY
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in September
Watervliet, NY
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in September
Watervliet, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Watervliet, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Watervliet, 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: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Watervliet, NY
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is September (17.3 days).
The month with the least sunshine days is April (10.6 days).
Average UV index in September
Watervliet, 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, March, October, November and December (UV index 2).
Average cloud cover in September
Watervliet, NY
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Watervliet, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, March, August and September (5mi).