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 correlates with a minor temperature reduction, down from August's 81°F (27.2°C) to a still warm 74.1°F (23.4°C). September's nights in Oldtown observe an average temperature of 53.2°F (11.8°C).Humidity
In September, the average relative humidity is 79%.Rainfall
In Oldtown, Maryland, during September, the rain falls for 13.6 days and regularly aggregates up to 1.85" (47mm) of precipitation. Throughout the year, there are 168 rainfall days, and 23.15" (588mm) of precipitation is accumulated.Snowfall
In Oldtown, snow does not fall in May through September.Daylight
In Oldtown, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:10 am and sunset at 6:58 pm EDT.
Sunshine
In Oldtown, the average sunshine in September is 8.9h.UV index
In Oldtown, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Guard yourself - Avoiding sunburn is suggested. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September in Oldtown?
When it does not snow?
Does it snow in September?
How many hours of daylight does Oldtown have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Oldtown, MD
- Average high temperature in September: 74.1°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in September: 53.2°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in September
Oldtown, 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
Oldtown, MD
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Oldtown, MD
- Average humidity in September: 79%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in September
Oldtown, MD
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is November (1.46").
Average rainfall days in September
Oldtown, MD
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in September
Oldtown, MD
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Oldtown, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Oldtown, 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 January (Average sunshine: 4h and 42min).
Average sunshine days in September
Oldtown, MD
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in September
Oldtown, MD
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Oldtown, MD
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Oldtown, MD
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Oldtown, Maryland, USA
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