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 sea temperature 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
With the arrival of September, Deale notices a mild change in the average high-temperature, sliding from August's 82.9°F (28.3°C) to a still moderately hot 76.8°F (24.9°C). Deale's temperature in September lowers to a consistent average of 64.9°F (18.3°C) during the nights.Humidity
In Deale, the average relative humidity in September is 75%.Rainfall
In Deale, in September, during 10.9 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In Deale, during the entire year, the rain falls for 127.2 days and collects up to 11.85" (301mm) of precipitation.Snowfall
April through October are months without snowfall in Deale.Ocean temperature
In Deale, in September, the average water temperature is 74.1°F (23.4°C).Note: If someone is sensitive to cold, the enjoyment of swimming in 74.1°F (23.4°C) water hinges on factors like sunshine, wind, and the current air temperature. (For context: Olympic swimming competitions are held in water temperatures of 77°F (25°C) to 82.4°F (28°C).)
Daylight
In September, the average length of the day in Deale 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, in Deale, sunrise is at 7:01 am and sunset at 6:50 pm EDT.
Sunshine
In Deale, the average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, an average UV index of 5 transforms into the following instructions:
Prioritize safety - Recommendations to avert sunburn are shared. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Notice! The Sun's UV exposure elevates with sand and water reflections.
Frequently asked questions
What are September temperatures in Deale?
What is the average humidity in September in Deale?
How many days does it rain in September in Deale?
When it does not snow in Deale?
What is the ocean temperature in September in Deale?
How many hours of daylight does Deale have in September?
What time are sunrise and sunset in September in Deale?
How long on average sun shines in September in Deale?
How high is the UV index in September in Deale?
Average temperature in September
Deale, MD
- Average high temperature in September: 76.8°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in September: 64.9°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (30°F).
Average pressure in September
Deale, MD
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Deale, MD
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in September
Deale, MD
- Average humidity in September: 75%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January and November (72%).
Average rainfall in September
Deale, MD
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in September
Deale, MD
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is August (15.6 days).
The month with the least rainy days is November (5.9 days).
Average snowfall in September
Deale, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Deale, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in September
Deale, MD
- Average sea temperature in September: 74.2°F
The best month for swimming (with the highest average sea temperature) is August (78°F).
The coldest month (with the lowest average sea temperature) is February (45.9°F).
Average daylight in September /
Average sunshine in September
Deale, MD
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).
Average sunshine days in September
Deale, MD
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is November (22.6 days).
The month with the least sunshine days is August (12.5 days).
Average UV index in September
Deale, 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 and December (UV index 2).
Average cloud cover in September
Deale, MD
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Deale, 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).
Deale, Maryland, USA
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