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 arrival of September correlates with a minor temperature reduction, down from August's warm 75.4°F (24.1°C) to a pleasant 69.1°F (20.6°C). Cortland experiences a nighttime temperature average of 50.5°F (10.3°C) during September.Humidity
In September, the average relative humidity is 82%.Rainfall
In Cortland, New York, during September, the rain falls for 12.9 days and regularly aggregates up to 1.54" (39mm) of precipitation. In Cortland, during the entire year, the rain falls for 149.8 days and collects up to 22.36" (568mm) of precipitation.Snowfall
In Cortland, 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 the month, sunrise is at 6:30 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:47 pm EDT.
Sunshine
In September, the average sunshine in Cortland is 8.6h.UV index
The average daily maximum UV index in September in Cortland, New York, is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, a regular UV index of 3 translates into these guidelines:
Adopt protective measures - Suggestions to resist sunburn are offered. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What is the temperature in September in Cortland?
What is the average humidity in September in Cortland?
How many days does it rain in September in Cortland?
When it does not snow in Cortland?
Does it snow in Cortland in September?
What is the average length of the day in September in Cortland?
When is the sunrise / sunset in September in Cortland?
How long on average sun shines in September in Cortland?
What is the UV index reading in September in Cortland?
Average temperature in September
Cortland, NY
- Average high temperature in September: 69.1°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in September: 50.5°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in September
Cortland, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Cortland, NY
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in September
Cortland, NY
- Average humidity in September: 82%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April and May (80%).
Average rainfall in September
Cortland, NY
- Average rainfall in September: 1.54"
The wettest months (with the highest rainfall) are May and July (2.48").
The driest month (with the least rainfall) is November (1.34").
Average rainfall days in September
Cortland, NY
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in September
Cortland, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Cortland, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Cortland, 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 6min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).
Average sunshine days in September
Cortland, NY
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is September (15.8 days).
The month with the least sunshine days is February (7.7 days).
Average UV index in September
Cortland, 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
Cortland, NY
- Average cloud cover in September: 39
The months with the most cloud cover are January and February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in September
Cortland, NY
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The month with the lowest visibility is February (4mi).
Cortland, New York, USA
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