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
September ushers in a minor alteration in Andover's climate, with the average high-temperature moving from August's warm 76.3°F (24.6°C) to a pleasant 69.4°F (20.8°C). In September, the nighttime temperature lowers to an average of 49.6°F (9.8°C).Humidity
The average relative humidity in September is 81%.Rainfall
In Andover, in September, it is raining for 14.1 days, with typically 1.61" (41mm) of accumulated precipitation. In Andover, during the entire year, the rain falls for 158 days and collects up to 23.5" (597mm) of precipitation.Snowfall
In Andover, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:44 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:53 pm EDT.
Sunshine
In Andover, the average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily UV index of 3 turns into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
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?
How many hours of daylight does Andover have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Andover, NY
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in September: 49.6°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in September
Andover, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Andover, NY
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Andover, NY
- Average humidity in September: 81%
The months with the highest relative humidity are January, February and December (87%).
The month with the lowest relative humidity is May (78%).
Average rainfall in September
Andover, NY
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is October (2.52").
The driest month (with the least rainfall) is January (1.5").
Average rainfall days in September
Andover, NY
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in September
Andover, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.32").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Andover, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Andover, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in September
Andover, NY
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is September (13.6 days).
The month with the least sunshine days is February (6.4 days).
Average UV index in September
Andover, 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, February and December (UV index 1).
Average cloud cover in September
Andover, NY
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in September
Andover, NY
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is January (4mi).
Andover, New York, USA
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