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
Onondaga Castle's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's warm 76.5°F (24.7°C) to a pleasant 70°F (21.1°C). In Onondaga Castle, the average low-temperature during the month of September is a cool 52°F (11.1°C).Humidity
In Onondaga Castle, New York, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 12.2 days. Throughout September, 1.61" (41mm) of precipitation is accumulated. In Onondaga Castle, during the entire year, the rain falls for 148.8 days and collects up to 25" (635mm) of precipitation.Snowfall
In Onondaga Castle, New York, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:47 pm EDT.
Sunshine
In Onondaga Castle, the average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index in Onondaga Castle is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 3 in September leads to these guidelines:
Exercise prevention - Precautions against solar damage are endorsed. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Onondaga Castle?
What is the average humidity in September in Onondaga Castle?
How much does it rain in Onondaga Castle in September?
When it does not snow in Onondaga Castle?
Does it snow in Onondaga Castle in September?
How many hours of daylight does Onondaga Castle have in September?
When is the sunrise / sunset in September in Onondaga Castle?
How many hours of sunshine does Onondaga Castle have in September?
How high is the UV index in September in Onondaga Castle?
Average temperature in September
Onondaga Castle, NY
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in September: 52°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in September
Onondaga Castle, NY
- Average pressure in September: 30.05"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
Onondaga Castle, NY
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.1mph).
Average humidity in September
Onondaga Castle, NY
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and May (78%).
Average rainfall in September
Onondaga Castle, NY
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days in September
Onondaga Castle, NY
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (6 days).
Average snowfall in September
Onondaga Castle, NY
- Average snowfall in September: 0"
The month with the highest snowfall is December (5.87").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Onondaga Castle, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Onondaga Castle, 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: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).
Average sunshine days in September
Onondaga Castle, NY
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in September
Onondaga Castle, 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 and December (UV index 1).
Average cloud cover in September
Onondaga Castle, NY
- Average cloud cover in September: 37
The months with the most cloud cover are January and February (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in September
Onondaga Castle, NY
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Onondaga Castle, New York, USA
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