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 advent of September brings a subtle shift in temperature, with the average high moving from a warm 83.7°F (28.7°C) in August to a still moderately hot 77.5°F (25.3°C). During the nights in September, Prince Frederick observes an average low-temperature of 64.4°F (18°C).Humidity
In September, the average relative humidity is 77%.Rainfall
In Prince Frederick, during September, the rain falls for 13.9 days and regularly aggregates up to 2.68" (68mm) of precipitation. In Prince Frederick, during the entire year, the rain falls for 158.1 days and collects up to 33.07" (840mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Prince Frederick, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:35 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:50 pm EDT.
Sunshine
The average sunshine in September is 9h.UV index
The average daily maximum UV index in September in Prince Frederick is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A typical high UV index of 5 in September suggests the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What is the usual temperature for Prince Frederick in September?
What is the average humidity in September in Prince Frederick?
How many days does it rain in September in Prince Frederick?
When it does not snow in Prince Frederick?
How many hours of daylight does Prince Frederick have in September?
When are sunrise and sunset in September in Prince Frederick?
How long on average sun shines in September in Prince Frederick?
How high is the UV index in September in Prince Frederick?
Average temperature in September
Prince Frederick, MD
- Average high temperature in September: 77.5°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 (41.5°F).
- Average low temperature in September: 64.4°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (30°F).
Average pressure in September
Prince Frederick, 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 (29.95"Hg).
Average wind speed in September
Prince Frederick, MD
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is March (9.2mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in September
Prince Frederick, MD
- Average humidity in September: 77%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is January (72%).
Average rainfall in September
Prince Frederick, MD
- Average rainfall in September: 2.68"
The wettest month (with the highest rainfall) is July (4.41").
The driest month (with the least rainfall) is January (1.81").
Average rainfall days in September
Prince Frederick, MD
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is August (17.7 days).
The month with the least rainy days is November (8 days).
Average snowfall in September
Prince Frederick, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Prince Frederick, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.7 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
Prince Frederick, 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 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in September
Prince Frederick, MD
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (11.3 days).
Average UV index in September
Prince Frederick, 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 and December (UV index 2).
Average cloud cover in September
Prince Frederick, MD
- Average cloud cover in September: 35
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Prince Frederick, 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).
Prince Frederick, Maryland, USA
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