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 warm 79.3°F (26.3°C) in August to a pleasant 71.6°F (22°C). Hillsdale sees an average low-temperature of 51.4°F (10.8°C) during September.Humidity
In September, the average relative humidity is 79%.Rainfall
In Hillsdale, in September, it is raining for 11.3 days, with typically 1.61" (41mm) of accumulated precipitation. In Hillsdale, during the entire year, the rain falls for 139.3 days and collects up to 21.06" (535mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Hillsdale, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:50 am and sunset at 6:36 pm EDT.
Sunshine
In September, the average sunshine is 8.8h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 in September translates into this advice:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Hillsdale have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Hillsdale have in September?
What is the UV index reading in September in Hillsdale?
Average temperature in September
Hillsdale, NY
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in September: 51.4°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in September
Hillsdale, 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
Hillsdale, NY
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Hillsdale, NY
- Average humidity in September: 79%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Hillsdale, NY
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is July (2.64").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in September
Hillsdale, NY
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in September
Hillsdale, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hillsdale, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hillsdale, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in September
Hillsdale, NY
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is January (19.7 days).
The month with the least sunshine days is June (12.1 days).
Average UV index in September
Hillsdale, NY
- Average UV index in September: 4
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
Hillsdale, NY
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Hillsdale, NY
- Average visibility in September: 5mi
The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).
Hillsdale, New York, USA
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