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
Ellicott City's weather subtly changes with the onset of September, barely falling from a warm 83.5°F (28.6°C) in August to a still moderately hot 76.8°F (24.9°C). The average low-temperature during September nights is a mild 60.4°F (15.8°C).Humidity
In Ellicott City, the average relative humidity in September is 75%.Rainfall
In Ellicott City, during September, the rain falls for 13.1 days and regularly aggregates up to 2.17" (55mm) of precipitation. Throughout the year, there are 165.5 rainfall days, and 31.65" (804mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Ellicott City.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:37 pm. On the last day of September, in Ellicott City, sunrise is at 7:02 am and sunset at 6:50 pm EDT.
Sunshine
In Ellicott City, the average sunshine in September is 9.1h.UV index
In Ellicott City, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Guard yourself - Avoiding sunburn is suggested. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What is the average September temperature in Ellicott City?
What is the average humidity in September in Ellicott City?
How many days does it rain in September in Ellicott City?
When it does not snow in Ellicott City?
How many hours of daylight does Ellicott City have in September?
When are sunrise and sunset in September in Ellicott City?
How long on average sun shines in September in Ellicott City?
What is the UV index reading in September in Ellicott City?
Average temperature in September
Ellicott City, MD
- Average high temperature in September: 76.8°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 (38.1°F).
- Average low temperature in September: 60.4°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in September
Ellicott City, 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 (29.94"Hg).
Average wind speed in September
Ellicott City, MD
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in September
Ellicott City, MD
- Average humidity in September: 75%
The months with the highest relative humidity are May and October (77%).
The month with the lowest relative humidity is July (71%).
Average rainfall in September
Ellicott City, MD
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is August (3.74").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in September
Ellicott City, MD
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in September
Ellicott City, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Ellicott City, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.9 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
Ellicott City, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in September
Ellicott City, MD
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in September
Ellicott City, 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
Ellicott City, MD
- Average cloud cover in September: 35
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Ellicott City, 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).
Ellicott City, Maryland, USA
Weather forecast for your location
2. Allow the app to use your location
