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
September sees a slight reduction in average high-temperature, with a shift from 81°F (27.2°C) in August to a still warm 74.1°F (23.4°C). Nighttime temperature lowers to an average of 53.2°F (11.8°C) in September.Humidity
The average relative humidity in September is 79%.Rainfall
In September, the rain falls for 13.6 days. Throughout September, 1.85" (47mm) of precipitation is accumulated. In La Vale, during the entire year, the rain falls for 168 days and collects up to 23.15" (588mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 6:44 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:58 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does La Vale have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
La Vale, 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
La Vale, 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
La Vale, 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
La Vale, 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
La Vale, 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
La Vale, 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
La Vale, 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
La Vale, 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
La Vale, 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
La Vale, 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
La Vale, 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
La Vale, 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
La Vale, 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).
La Vale, Maryland, USA
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