September weather forecastSpring Valley, NY
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Spring Valley, New York, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 75°F (23.9°C).Temperature
During the shift to September, a minor reduction in average high-temperature is observed, shifting from 82.9°F (28.3°C) in August to a still warm 75°F (23.9°C). Spring Valley reports a consistent average low-temperature of 57.9°F (14.4°C) throughout September nights.Humidity
In Spring Valley, the average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall in Spring Valley. Rain falls for 12.5 days and accumulates 1.54" (39mm) of precipitation.Snowfall
May through September are months without snowfall in Spring Valley.Daylight
In Spring Valley, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:23 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:39 pm EDT.
Sunshine
The average sunshine in September in Spring Valley, New York, is 8.7h.UV index
The average daily maximum UV index in September in Spring Valley is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 4 during September translates into the following guidance:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Spring Valley, NY
- Average high temperature in September: 75°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in September: 57.9°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in September
Spring Valley, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Spring Valley, NY
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Spring Valley, NY
- Average humidity in September: 75%
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are July and August (71%).
Average rainfall in September
Spring Valley, NY
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is July (2.76").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in September
Spring Valley, NY
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in September
Spring Valley, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Spring Valley, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Spring Valley, NY
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Spring Valley, NY
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in September
Spring Valley, NY
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Spring Valley, NY
- Average cloud cover in September: 38
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Spring Valley, NY
- Average visibility in September: 6mi
The months with the highest visibility are January, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February and May (5mi).
