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
Cairnbrook's transition into September involves a gentle shift in temperature, receding from a warm 77.9°F (25.5°C) in August to an agreeable 71.6°F (22°C). In September, the temperature drops to an average of 52.5°F (11.4°C) at night.Humidity
The average relative humidity in September is 81%.Rainfall
In Cairnbrook, Pennsylvania, in September, it is raining for 15.1 days, with typically 2.09" (53mm) of accumulated precipitation. In Cairnbrook, during the entire year, the rain falls for 170.8 days and collects up to 31.02" (788mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Cairnbrook, the average length of the day in September is 12h and 26min.On the first day of September in Cairnbrook, sunrise is at 6:43 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:58 pm EDT.
Sunshine
In Cairnbrook, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September in Cairnbrook is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 3 during September translates into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What are the temperatures in Cairnbrook in September?
What is the average humidity in September in Cairnbrook?
How much does it rain in Cairnbrook in September?
When it does not snow in Cairnbrook?
Does it snow in Cairnbrook in September?
What is the average length of the day in September in Cairnbrook?
When is the sunrise / sunset in September in Cairnbrook?
How long on average sun shines in September in Cairnbrook?
What is the UV index reading in September in Cairnbrook?
Average temperature in September
Cairnbrook, PA
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in September: 52.5°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in September
Cairnbrook, PA
- 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
Cairnbrook, PA
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Cairnbrook, PA
- Average humidity in September: 81%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is July (78%).
Average rainfall in September
Cairnbrook, PA
- Average rainfall in September: 2.09"
The wettest months (with the highest rainfall) are April and July (3.11").
The driest month (with the least rainfall) is November (1.65").
Average rainfall days in September
Cairnbrook, PA
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is May (19.9 days).
The months with the least rainy days are February and November (8.9 days).
Average snowfall in September
Cairnbrook, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.97").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Cairnbrook, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Cairnbrook, PA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- 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 January (Average sunshine: 3h and 12min).
Average sunshine days in September
Cairnbrook, PA
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is November (15.7 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in September
Cairnbrook, 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, February, March, October, November and December (UV index 2).
Average cloud cover in September
Cairnbrook, PA
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in September
Cairnbrook, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Cairnbrook, Pennsylvania, USA
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