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 subtle shift in Boonsboro's weather is observed as August turns into September, with the average high temperature reducing from a moderately hot 83.3°F (28.5°C) to a still warm 76.1°F (24.5°C). During September, the temperature tends to dip to an average of 56.8°F (13.8°C) at night.Humidity
In September, the average relative humidity in Boonsboro, Maryland, is 78%.Rainfall
In Boonsboro, Maryland, in September, it is raining for 13.5 days, with typically 2.09" (53mm) of accumulated precipitation. Throughout the year, in Boonsboro, there are 162.4 rainfall days, and 30.16" (766mm) of precipitation is accumulated.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 the month, sunrise is at 6:39 am and sunset at 7:41 pm. On the last day of September, in Boonsboro, sunrise is at 7:06 am and sunset at 6:54 pm EDT.
Sunshine
In Boonsboro, the average sunshine in September is 8.7h.UV index
In Boonsboro, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun's radiation is especially intense around midday; try to stay in shade during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
What is the temperature in September in Boonsboro?
What is the average humidity in September in Boonsboro?
How many days does it rain in September in Boonsboro?
When it does not snow in Boonsboro?
Does it snow in Boonsboro in September?
How many hours of daylight does Boonsboro have in September?
What time are sunrise and sunset in September in Boonsboro?
How many hours of sunshine does Boonsboro have in September?
How high is the UV index in September in Boonsboro?
Average temperature in September
Boonsboro, MD
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in September: 56.8°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
Boonsboro, 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
Boonsboro, MD
- Average wind speed in September: 5.1mph
The windiest months (with the highest average wind speed) are January, February and March (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
Boonsboro, MD
- Average humidity in September: 78%
The months with the highest relative humidity are May, October and December (79%).
The month with the lowest relative humidity is July (74%).
Average rainfall in September
Boonsboro, MD
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (1.97").
Average rainfall days in September
Boonsboro, MD
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in September
Boonsboro, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.72").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Boonsboro, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.8 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
Boonsboro, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Boonsboro, MD
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is April (11 days).
Average UV index in September
Boonsboro, 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
Boonsboro, MD
- Average cloud cover in September: 39
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
Boonsboro, 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).
Boonsboro, Maryland, USA
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