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 corresponds with a light shift in temperature, down from 83.8°F (28.8°C) in August to a still warm 77.2°F (25.1°C). September is noted for a mean low-temperature of 62.2°F (16.8°C).Humidity
In Crestwood, the average relative humidity in September is 75%.Rainfall
In Crestwood, in September, it is raining for 13.1 days, with typically 2.09" (53mm) of accumulated precipitation. Throughout the year, there are 156.3 rainfall days, and 29.61" (752mm) of precipitation is accumulated.Snowfall
In Crestwood, snow does not fall in April through October.Daylight
The average length of the day in September in Crestwood is 12h and 26min.On the first day of September, sunrise is at 6:35 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:50 pm EDT.
Sunshine
The average sunshine in September in Crestwood, Maryland, is 9.3h.UV index
In September, the average daily maximum UV index in Crestwood is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In September, an average UV index of 5 transforms into the following instructions:
Adopt protective measures - It is advised to guard against sun damage. It's recommended to limit sun exposure when its radiation is at its peak during midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
What is the temperature in September in Crestwood?
What is the average humidity in September in Crestwood?
How many days does it rain in September in Crestwood?
When it does not snow in Crestwood?
How many hours of daylight does Crestwood have in September?
When are sunrise and sunset in September in Crestwood?
How long on average sun shines in September in Crestwood?
What is the UV index reading in September in Crestwood?
Average temperature in September
Crestwood, MD
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 62.2°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure in September
Crestwood, 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
Crestwood, MD
- Average wind speed in September: 6.5mph
The windiest months (with the highest average wind speed) are February and March (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Crestwood, MD
- Average humidity in September: 75%
The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are April and July (72%).
Average rainfall in September
Crestwood, MD
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (1.77").
Average rainfall days in September
Crestwood, MD
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in September
Crestwood, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Crestwood, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.9 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
Crestwood, 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
Crestwood, MD
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in September
Crestwood, 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, February, November and December (UV index 2).
Average cloud cover in September
Crestwood, 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
Crestwood, 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).
Crestwood, Maryland, USA
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