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
September signifies a gentle decline in Windham's average high-temperature, easing from a warm 77.5°F (25.3°C) in August to an agreeable 70.7°F (21.5°C). An average nighttime temperature of 50.2°F (10.1°C) is noted in Windham, Pennsylvania, during the month of September.Humidity
In Windham, Pennsylvania, the average relative humidity in September is 81%.Rainfall
In Windham, Pennsylvania, in September, it is raining for 13.4 days, with typically 2.52" (64mm) of accumulated precipitation. Throughout the year, in Windham, there are 171.9 rainfall days, and 32.09" (815mm) of precipitation is accumulated.Snowfall
In Windham, snow does not fall in June through September.Daylight
In Windham, the average length of the day in September is 12h and 28min.On the first day of September in Windham, Pennsylvania, sunrise is at 6:31 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:48 pm EDT.
Sunshine
In September, the average sunshine in Windham is 8.6h.UV index
In Windham, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the average maximum UV index of 3 translates into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
What are the temperatures in Windham in September?
What is the average humidity in September in Windham?
How much does it rain in Windham in September?
When it does not snow in Windham?
Does it snow in Windham in September?
How many hours of daylight does Windham have in September?
When is the sunrise / sunset in September in Windham?
How long on average sun shines in September in Windham?
What is the UV index intensity in September in Windham?
Average temperature in September
Windham, PA
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in September: 50.2°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
Windham, 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 (29.93"Hg).
Average wind speed in September
Windham, PA
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Windham, PA
- Average humidity in September: 81%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, May, June and July (79%).
Average rainfall in September
Windham, PA
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days in September
Windham, PA
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (8.9 days).
Average snowfall in September
Windham, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (8.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Windham, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Windham, PA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in September
Windham, PA
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is September (13.7 days).
The month with the least sunshine days is February (6 days).
Average UV index in September
Windham, 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
Windham, PA
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in September
Windham, 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).
Windham, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location
