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
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a moderately hot 77.5°F (25.3°C) in August to a pleasant 71.1°F (21.7°C). In Mount Cobb, an average temperature of 51.4°F (10.8°C) is noted during September nights.Humidity
In September, the average relative humidity in Mount Cobb is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 1.97" (50mm) of precipitation.Snowfall
In Mount Cobb, Pennsylvania, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:34 pm. On the last day of September, in Mount Cobb, sunrise is at 6:58 am and sunset at 6:45 pm EDT.
Sunshine
In Mount Cobb, the average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index in Mount Cobb, Pennsylvania, is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 3 during September leads to these advisories:
Act with care - Obligation to protect against skin and eye damage is highlighted. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Mount Cobb?
What is the average humidity in September in Mount Cobb?
What is the driest month in Mount Cobb?
How many days does it rain in September in Mount Cobb?
When it does not snow in Mount Cobb?
Does it snow in Mount Cobb in September?
How many hours of daylight does Mount Cobb have in September?
When are sunrise and sunset in September in Mount Cobb?
How long on average sun shines in September in Mount Cobb?
How high is the UV index in September in Mount Cobb?
Average temperature in September
Mount Cobb, PA
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in September: 51.4°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure in September
Mount Cobb, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Mount Cobb, PA
- Average wind speed in September: 6mph
The windiest months (with the highest average wind speed) are January, February and March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in September
Mount Cobb, PA
- Average humidity in September: 80%
The months with the highest relative humidity are February and December (85%).
The months with the lowest relative humidity are April, June and July (78%).
Average rainfall in September
Mount Cobb, PA
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in September
Mount Cobb, PA
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in September
Mount Cobb, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mount Cobb, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mount Cobb, PA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in September
Mount Cobb, PA
- Average sunshine days in September: 14.7 days
The months with the most sunshine days are September and November (14.7 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in September
Mount Cobb, PA
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Mount Cobb, PA
- Average cloud cover in September: 44
The months with the most cloud cover are February and December (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in September
Mount Cobb, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Mount Cobb, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location