September weather forecastHolmes, NY
September
Weather in September
September, the first month of the autumn in Holmes, is still a pleasant month, with an average temperature varying between 72.9°F (22.7°C) and 54.5°F (12.5°C).Temperature
During the shift to September, a minor reduction in average high-temperature is observed, shifting from a warm 80.4°F (26.9°C) in August to an agreeable 72.9°F (22.7°C). Holmes experiences a mean low-temperature of 54.5°F (12.5°C) during September.Humidity
In Holmes, the average relative humidity in September is 79%.Rainfall
In Holmes, in September, during 12.7 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Holmes, during the entire year, the rain falls for 154.6 days and collects up to 34.02" (864mm) of precipitation.Snowfall
June through September are months without snowfall in Holmes.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:21 am and sunset at 7:27 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 8.1h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Undertake protective steps - Preventing sun damage is advised. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Holmes, NY
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in September
Holmes, 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 (29.93"Hg).
Average wind speed in September
Holmes, NY
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Holmes, NY
- Average humidity in September: 79%
The months with the highest relative humidity are February, October and December (80%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Holmes, NY
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is February (2.17").
Average rainfall days in September
Holmes, NY
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in September
Holmes, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Holmes, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Holmes, 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 12min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in September
Holmes, NY
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in September
Holmes, NY
- Average UV index in September: 4
The months with the highest UV index are June and July (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
Holmes, NY
- Average cloud cover in September: 43
The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in September
Holmes, NY
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
