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
With the commencement of September, Clarence records a moderate temperature decline, with the average high easing from August's moderately hot 78.1°F (25.6°C) to a pleasant 71.8°F (22.1°C). Clarence reports a consistent average low-temperature of 54.3°F (12.4°C) throughout September nights.Humidity
The average relative humidity in September is 77%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.6 days and typically collects 1.5" (38mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:11 am and sunset at 6:56 pm EDT.
Sunshine
In Clarence, the average sunshine in September is 8.6h.UV index
In Clarence, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the average maximum UV index of 3 translates into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September in Clarence?
What is the driest month?
How many days does it rain in September?
When it does not snow in Clarence?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Clarence, NY
- Average high temperature in September: 71.8°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in September: 54.3°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in September
Clarence, NY
- Average pressure in September: 30.04"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
Clarence, NY
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in September
Clarence, NY
- Average humidity in September: 77%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
Clarence, NY
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in September
Clarence, NY
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in September
Clarence, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Clarence, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Clarence, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 2h and 18min).
Average sunshine days in September
Clarence, NY
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is September (14.4 days).
The months with the least sunshine days are January and February (6.5 days).
Average UV index in September
Clarence, NY
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Clarence, NY
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 78).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Clarence, NY
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (4mi).
Clarence, New York, USA
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