September weather forecastMarkhams, NY
September
Weather in September
September, the first month of the autumn in Markhams, is also an agreeable month, with an average temperature varying between 70°F (21.1°C) and 53.1°F (11.7°C).Temperature
The transition into September subtly indicates a reduction in the average high-temperature, down to a pleasant 70°F (21.1°C) from August's moderately hot 75.6°F (24.2°C). An average low-temperature of 53.1°F (11.7°C) is noted during the month of September.Humidity
The months with the lowest humidity are April, May, August and September, with an average relative humidity of 80%.Rainfall
September is the month with the least rainfall. Rain falls for 12.3 days and accumulates 1.1" (28mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:49 pm. On the last day of September, 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 Markhams, New York, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Undertake precautions - It is suggested to shield oneself from sunburn. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 30min
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 48min
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).
