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
The onset of September is marked by a minor decrease in temperature, transitioning from a moderately hot 81.7°F (27.6°C) in August to a still warm 75°F (23.9°C). During September, the average low-temperature in Patapsco is a moderate 57°F (13.9°C).Humidity
In September, the average relative humidity in Patapsco is 79%.Rainfall
In September, in Patapsco, the rain falls for 13.8 days. Throughout September, 2.44" (62mm) of precipitation is accumulated. In Patapsco, Maryland, during the entire year, the rain falls for 158.9 days and collects up to 32.68" (830mm) of precipitation.Snowfall
In Patapsco, Maryland, snow does not fall in May through September.Daylight
In Patapsco, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:38 pm. On the last day of September, in Patapsco, sunrise is at 7:03 am and sunset at 6:51 pm EDT.
Sunshine
In Patapsco, the average sunshine in September is 8.7h.UV index
In Patapsco, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. To protect against the Sun's most potent rays, avoid direct exposure around midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Frequently asked questions
What is the temperature in September in Patapsco?
What is the average humidity in September in Patapsco?
How much does it rain in Patapsco in September?
When it does not snow in Patapsco?
Does it snow in Patapsco in September?
How many hours of daylight does Patapsco have in September?
What time are sunrise and sunset in September in Patapsco?
How long on average sun shines in September in Patapsco?
What is the UV index reading in September in Patapsco?
Average temperature in September
Patapsco, MD
- Average high temperature in September: 75°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in September: 57°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in September
Patapsco, 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 (29.94"Hg).
Average wind speed in September
Patapsco, MD
- Average wind speed in September: 5.9mph
The windiest months (with the highest average wind speed) are February and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Patapsco, MD
- Average humidity in September: 79%
The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are January, April, July and November (76%).
Average rainfall in September
Patapsco, MD
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is February (2.13").
Average rainfall days in September
Patapsco, MD
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in September
Patapsco, MD
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.06").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Patapsco, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.9 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
Patapsco, 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 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in September
Patapsco, MD
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is July (11.6 days).
Average UV index in September
Patapsco, 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
Patapsco, MD
- Average cloud cover in September: 39
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Patapsco, MD
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Patapsco, Maryland, USA
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