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
In September, the average high-temperature marginally drops from a warm 82°F (27.8°C) in August to a still moderately hot 74.5°F (23.6°C). September in Putnam Valley is noted for a mean low-temperature of 56.3°F (13.5°C).Humidity
In September, the average relative humidity is 77%.Rainfall
In Putnam Valley, in September, during 12.5 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. Throughout the year, there are 148.4 rainfall days, and 30.55" (776mm) of precipitation is accumulated.Snowfall
In Putnam Valley, snow does not fall in June through September.Daylight
In Putnam Valley, New York, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:27 pm. On the last day of September, in Putnam Valley, sunrise is at 6:51 am and sunset at 6:38 pm EDT.
Sunshine
In September, the average sunshine is 8.8h.UV index
The average daily maximum UV index in September in Putnam Valley is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
What is the temperature in September in Putnam Valley?
What is the average humidity in September in Putnam Valley?
How much does it rain in Putnam Valley in September?
When it does not snow in Putnam Valley?
Does it snow in Putnam Valley in September?
What is the average length of the day in September in Putnam Valley?
What time are sunrise and sunset in September in Putnam Valley?
How many hours of sunshine does Putnam Valley have in September?
What is the UV index intensity in September in Putnam Valley?
Average temperature in September
Putnam Valley, NY
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in September
Putnam 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
Putnam Valley, NY
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are January and March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Putnam Valley, NY
- Average humidity in September: 77%
The months with the highest relative humidity are February, October and December (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Putnam Valley, NY
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is July (3.31").
The driest month (with the least rainfall) is February (1.81").
Average rainfall days in September
Putnam Valley, NY
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in September
Putnam Valley, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Putnam Valley, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Putnam Valley, NY
- Average daylight in September: 12h and 3min
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 5min
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 36min).
Average sunshine days in September
Putnam Valley, NY
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in September
Putnam Valley, NY
- Average UV index in September: 4
The months with the highest UV index are June 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
Putnam Valley, NY
- Average cloud cover in September: 37
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Putnam 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).
Putnam Valley, New York, USA
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