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
The beginning of September brings a slight decrease in the average high-temperature, transitioning from a warm 77°F (25°C) in August to a pleasant 70.3°F (21.3°C). In the month of September, the temperature generally rests at an average low of 50.4°F (10.2°C).Humidity
The average relative humidity in September is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.4 days and typically collects 2.01" (51mm) of precipitation.Snowfall
In Saint Johnsville, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:23 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:41 pm EDT.
Sunshine
In Saint Johnsville, the average sunshine in September is 9h.UV index
In Saint Johnsville, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 3 in September translates into these instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Saint Johnsville have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Saint Johnsville have in September?
What is the UV index reading in September?
Average temperature in September
Saint Johnsville, NY
- Average high temperature in September: 70.3°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in September: 50.4°F
The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in September
Saint Johnsville, 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 (29.92"Hg).
Average wind speed in September
Saint Johnsville, NY
- Average wind speed in September: 5.9mph
The windiest months (with the highest average wind speed) are January and February (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Saint Johnsville, NY
- Average humidity in September: 79%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Saint Johnsville, NY
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Saint Johnsville, NY
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Saint Johnsville, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Saint Johnsville, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Saint Johnsville, 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in September
Saint Johnsville, NY
- Average sunshine days in September: 16 days
The month with the most sunshine days is September (16 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in September
Saint Johnsville, 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
Saint Johnsville, NY
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Saint Johnsville, NY
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Saint Johnsville, New York, USA
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