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
September
Weather in September
Temperature
September brings a slight decrease in the average high-temperature, shifting from a moderately hot 77.5°F (25.3°C) in August to an agreeable 69.6°F (20.9°C). Granville temperatures generally rest at a low of 49.5°F (9.7°C) during the September nights.Humidity
In Granville, the average relative humidity in September is 79%.Rainfall
In Granville, in September, it is raining for 12.5 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, there are 153.4 rainfall days, and 27.8" (706mm) of precipitation is accumulated.Snowfall
In Granville, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September, sunrise is at 6:17 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:35 pm EDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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?
How many days does it rain in September?
When it does not snow?
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
Granville, NY
- Average high temperature in September: 69.6°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 (25.3°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (14.2°F).
Average pressure in September
Granville, NY
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Granville, NY
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January and April (7.2mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Granville, NY
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Granville, NY
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is June (2.91").
The driest months (with the least rainfall) are January, February and March (1.89").
Average rainfall days in September
Granville, NY
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in September
Granville, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (8.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Granville, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Granville, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in September
Granville, NY
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in September
Granville, 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
Granville, NY
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Granville, NY
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).