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 sea temperature 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
The start of September involves a subtle temperature drop, shifting from a warm 78.4°F (25.8°C) in August to an agreeable 72°F (22.2°C). Tonawanda's nighttime temperature during September is consistently averaged at a moderate 56.7°F (13.7°C).Humidity
July through September, with an average relative humidity of 74%, are the least humid months.Rainfall
September is the month with the least rainfall. Rain falls for 15 days and accumulates 1.81" (46mm) of precipitation.Snowfall
In Tonawanda, snow does not fall in June through September.Ocean temperature
In September, the average ocean temperature in Tonawanda is 68.5°F (20.3°C).Note: Swimming in 68.5°F (20.3°C) does not offer a pleasant experience for most individuals. The act of controlling one's breathing becomes progressively difficult as the water temperature goes under 69.8°F (21°C).
Daylight
The average length of the day in September in Tonawanda is 12h and 29min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:58 pm EDT.
Sunshine
The average sunshine in September in Tonawanda is 8.8h.UV index
In September, the average daily maximum UV index in Tonawanda is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Exercise prevention - Warding off sunburn is urged. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Tonawanda?
What is the least humid month in Tonawanda?
What is the average humidity in September in Tonawanda?
What is the driest month in Tonawanda?
How many days does it rain in September in Tonawanda?
When it does not snow in Tonawanda?
Does it snow in Tonawanda in September?
What is the ocean temperature in September in Tonawanda?
How many hours of daylight does Tonawanda have in September?
When is the sunrise / sunset in September in Tonawanda?
How long on average sun shines in September in Tonawanda?
What is the UV index intensity in September in Tonawanda?
Average temperature in September
Tonawanda, NY
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in September: 56.7°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in September
Tonawanda, 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
Tonawanda, NY
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in September
Tonawanda, NY
- Average humidity in September: 74%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are July, August and September (74%).
Average rainfall in September
Tonawanda, NY
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in September
Tonawanda, NY
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (7.6 days).
Average snowfall in September
Tonawanda, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Tonawanda, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Tonawanda, NY
- Average sea temperature in September: 68.5°F
The best month for swimming (with the highest average sea temperature) is August (72.9°F).
The coldest month (with the lowest average sea temperature) is March (35.7°F).
Average daylight in September /
Average sunshine in September
Tonawanda, 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 18min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
Tonawanda, NY
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is September (12.5 days).
The month with the least sunshine days is January (6.3 days).
Average UV index in September
Tonawanda, NY
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Tonawanda, NY
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Tonawanda, 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).
Tonawanda, New York, USA
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