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
With September's onset, the weather reveals a slight temperature decrease, transitioning from 82.9°F (28.3°C) in August to a still warm 77.2°F (25.1°C). Nightly temperatures drop to an average low of 63.3°F (17.4°C) in September.Humidity
In Chaple, the average relative humidity in September is 77%.Rainfall
In Chaple, in September, during 11.8 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. Throughout the year, there are 130.5 rainfall days, and 15.39" (391mm) of precipitation is accumulated.Snowfall
In Chaple, snow does not fall in May through October.Daylight
In Chaple, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:33 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:47 pm EDT.
Sunshine
The average sunshine in September is 9.2h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 5 in September translates into these instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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 many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Chaple have in September?
How high is the UV index in September?
Average temperature in September
Chaple, MD
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in September: 63.3°F
The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in September
Chaple, MD
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Chaple, MD
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Chaple, MD
- Average humidity in September: 77%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and November (73%).
Average rainfall in September
Chaple, MD
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in September
Chaple, MD
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is February (7.4 days).
Average snowfall in September
Chaple, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.59").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Chaple, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Chaple, MD
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Chaple, MD
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is November (21 days).
The month with the least sunshine days is August (13 days).
Average UV index in September
Chaple, 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 and December (UV index 2).
Average cloud cover in September
Chaple, MD
- Average cloud cover in September: 34
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Chaple, MD
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Chaple, Maryland, USA
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