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
As September begins, there is a minor decrease in the average high-temperature, softly falling from a moderately hot 75.6°F (24.2°C) in August to a pleasant 70°F (21.1°C). Throughout September, the temperature in Markhams falls to an average low of 53.1°F (11.7°C).Humidity
The months with the lowest humidity in Markhams are April, May, August and September, with an average relative humidity of 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.3 days and typically collects 1.1" (28mm) of precipitation.Snowfall
In Markhams, snow does not fall in June through September.Daylight
In September, the average length of the day in Markhams is 12h and 28min.On the first day of September, sunrise is at 6:41 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:58 pm EDT.
Sunshine
In Markhams, the average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 3 during September leads to these instructions:
Guard yourself - Avoiding sunburn is suggested. When the Sun is at its strongest around midday, find shade and limit exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What are the temperatures in Markhams in September?
What are the least humid months in Markhams?
What is the average humidity in September in Markhams?
What is the driest month in Markhams?
How many days does it rain in September in Markhams?
When it does not snow in Markhams?
Does it snow in Markhams in September?
What is the average length of the day in September in Markhams?
What time are sunrise and sunset in September in Markhams?
How many hours of sunshine does Markhams have in September?
What is the UV index intensity in September in Markhams?
Average temperature in September
Markhams, NY
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in September: 53.1°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in September
Markhams, NY
- Average pressure in September: 30.05"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
Markhams, NY
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is January (11.6mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in September
Markhams, NY
- Average humidity in September: 80%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April, May, August and September (80%).
Average rainfall in September
Markhams, NY
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is July (1.93").
The driest month (with the least rainfall) is September (1.1").
Average rainfall days in September
Markhams, NY
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is October (16.6 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in September
Markhams, NY
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (3.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Markhams, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Markhams, 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 6min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in September
Markhams, NY
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is January (8.2 days).
Average UV index in September
Markhams, 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
Markhams, NY
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 78).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Markhams, NY
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Markhams, New York, USA
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