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
Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a warm 76.6°F (24.8°C) to a pleasant 70°F (21.1°C). Throughout the month of September, the nighttime temperature dips to an average of 49.5°F (9.7°C).Humidity
In September, the average relative humidity in Apex is 81%.Rainfall
September is the month with the least rainfall in Apex. Rain falls for 8.1 days and accumulates 0.55" (14mm) of precipitation.Snowfall
In Apex, snow does not fall in June through September.Daylight
In Apex, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:27 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:43 pm EDT.
Sunshine
In Apex, New York, the average sunshine in September is 8.3h.UV index
In Apex, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 3 translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
What are September temperatures in Apex?
What is the average humidity in September in Apex?
What is the driest month in Apex?
How much does it rain in Apex in September?
When it does not snow in Apex?
Does it snow in Apex in September?
What is the average length of the day in September in Apex?
What time are sunrise and sunset in September in Apex?
How long on average sun shines in September in Apex?
How high is the UV index in September in Apex?
Average temperature in September
Apex, NY
- Average high temperature in September: 70°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 (27.9°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure in September
Apex, 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
Apex, NY
- Average wind speed in September: 6mph
The windiest months (with the highest average wind speed) are January and February (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in September
Apex, NY
- Average humidity in September: 81%
The months with the highest relative humidity are February and December (87%).
The months with the lowest relative humidity are June and July (79%).
Average rainfall in September
Apex, NY
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is August (1.02").
The driest month (with the least rainfall) is September (0.55").
Average rainfall days in September
Apex, NY
- Average rainfall days in September: 8.1 days
The months with the highest number of rainy days are May and July (12.3 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in September
Apex, NY
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Apex, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Apex, 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: 9h and 48min).
The months with the least sunshine are February and December (Average sunshine: 2h and 42min).
Average sunshine days in September
Apex, NY
- Average sunshine days in September: 19.6 days
The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is April (14.8 days).
Average UV index in September
Apex, 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, November and December (UV index 1).
Average cloud cover in September
Apex, NY
- Average cloud cover in September: 44
The month with the most cloud cover is February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 41).
Average visibility in September
Apex, NY
- Average visibility in September: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (5mi).
The months with the lowest visibility are August and September (4mi).
Apex, New York, USA
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