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 August transitions into September, Willowdale sees a gentle drop in the average high-temperature, transitioning from a moderately hot 83.8°F (28.8°C) to a still warm 77.2°F (25.1°C). In Willowdale, September's nights observe an average temperature dip to a comfortable 62.4°F (16.9°C).Humidity
In Willowdale, the average relative humidity in September is 75%.Rainfall
In Willowdale, Maryland, in September, it is raining for 13.1 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, there are 157.2 rainfall days, and 30.47" (774mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Willowdale.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:36 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:50 pm EDT.
Sunshine
In Willowdale, the average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What are September temperatures in Willowdale?
What is the average humidity in September in Willowdale?
How many days does it rain in September in Willowdale?
When it does not snow in Willowdale?
How many hours of daylight does Willowdale have in September?
When is the sunrise / sunset in September in Willowdale?
How many hours of sunshine does Willowdale have in September?
What is the UV index reading in September in Willowdale?
Average temperature in September
Willowdale, MD
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 62.4°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in September
Willowdale, MD
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Willowdale, MD
- Average wind speed in September: 6.6mph
The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in September
Willowdale, MD
- Average humidity in September: 75%
The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are March, April and July (72%).
Average rainfall in September
Willowdale, MD
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (1.81").
Average rainfall days in September
Willowdale, MD
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and November (8.4 days).
Average snowfall in September
Willowdale, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.09").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Willowdale, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Willowdale, MD
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Willowdale, MD
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (19.9 days).
The months with the least sunshine days are May and July (10.8 days).
Average UV index in September
Willowdale, MD
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Willowdale, MD
- Average cloud cover in September: 34
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Willowdale, MD
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Willowdale, Maryland, USA
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