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
A moderate decline in average high-temperatures is noted in September, moving from 82°F (27.8°C) in August to a still warm 75.4°F (24.1°C). Nighttime temperature in Rocky Ridge dips to a mean of 56.7°F (13.7°C) during September.Humidity
In September, the average relative humidity is 79%.Rainfall
In Rocky Ridge, during September, the rain falls for 13.9 days and regularly aggregates up to 2.32" (59mm) of precipitation. Throughout the year, in Rocky Ridge, Maryland, there are 164.1 rainfall days, and 31.97" (812mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Rocky Ridge.Daylight
In September, the average length of the day in Rocky Ridge is 12h and 26min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:39 pm. On the last day of September, in Rocky Ridge, Maryland, sunrise is at 7:05 am and sunset at 6:52 pm EDT.
Sunshine
In Rocky Ridge, the average sunshine in September is 8.8h.UV index
In Rocky Ridge, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
What are September temperatures in Rocky Ridge?
What is the average humidity in September in Rocky Ridge?
How much does it rain in Rocky Ridge in September?
When it does not snow in Rocky Ridge?
Does it snow in Rocky Ridge in September?
What is the average length of the day in September in Rocky Ridge?
What time are sunrise and sunset in September in Rocky Ridge?
How many hours of sunshine does Rocky Ridge have in September?
What is the UV index reading in September in Rocky Ridge?
Average temperature in September
Rocky Ridge, MD
- Average high temperature in September: 75.4°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 (36.7°F).
- Average low temperature in September: 56.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
Rocky Ridge, MD
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Rocky Ridge, MD
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in September
Rocky Ridge, MD
- Average humidity in September: 79%
The month with the highest relative humidity is October (80%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in September
Rocky Ridge, MD
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (2.2").
Average rainfall days in September
Rocky Ridge, MD
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in September
Rocky Ridge, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Rocky Ridge, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rocky Ridge, 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 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Rocky Ridge, MD
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (11.2 days).
Average UV index in September
Rocky Ridge, MD
- Average UV index in September: 4
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
Rocky Ridge, MD
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Rocky Ridge, MD
- Average visibility in September: 5mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
Rocky Ridge, Maryland, USA
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