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
Washington Grove's progression into September involves a minor drop in the average high-temperature, slightly receding from a moderately hot 84.6°F (29.2°C) in August to a still warm 77.7°F (25.4°C). In Washington Grove, September's nights observe an average temperature dip to a mild 59.9°F (15.5°C).Humidity
In Washington Grove, the average relative humidity in September is 75%.Rainfall
In Washington Grove, in September, during 12.9 rainfall days, 1.97" (50mm) of precipitation is typically accumulated. Throughout the year, there are 154.8 rainfall days, and 29.09" (739mm) of precipitation is accumulated.Snowfall
In Washington Grove, Maryland, snow does not fall in June through October.Daylight
In September, the average length of the day in Washington Grove is 12h and 26min.On the first day of September in Washington Grove, sunrise is at 6:38 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:52 pm EDT.
Sunshine
In September, the average sunshine in Washington Grove is 9h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, a regular UV index of 5 translates into these guidelines:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Frequently asked questions
What are the temperatures in Washington Grove in September?
What is the average humidity in September in Washington Grove?
How many days does it rain in September in Washington Grove?
When it does not snow in Washington Grove?
How many hours of daylight does Washington Grove have in September?
When is the sunrise / sunset in September in Washington Grove?
How long on average sun shines in September in Washington Grove?
What is the UV index intensity in September in Washington Grove?
Average temperature in September
Washington Grove, MD
- Average high temperature in September: 77.7°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in September
Washington Grove, MD
- Average pressure in September: 30.05"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
Washington Grove, MD
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Washington Grove, MD
- Average humidity in September: 75%
The months with the highest relative humidity are May, October and December (77%).
The month with the lowest relative humidity is July (72%).
Average rainfall in September
Washington Grove, MD
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in September
Washington Grove, MD
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in September
Washington Grove, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.76").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Washington Grove, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Washington Grove, 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 30min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Washington Grove, MD
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in September
Washington Grove, 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, November and December (UV index 2).
Average cloud cover in September
Washington Grove, MD
- Average cloud cover in September: 36
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Washington Grove, MD
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Washington Grove, Maryland, USA
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