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 arrival of September corresponds with a light shift in temperature, down from a warm 79.5°F (26.4°C) in August to an agreeable 73°F (22.8°C). During September, Windham experiences an average low-temperature of 54.5°F (12.5°C) at night.Humidity
The average relative humidity in September is 80%.Rainfall
In Windham, in September, during 15.3 rainfall days, 1.97" (50mm) of precipitation is typically accumulated. Throughout the year, in Windham, there are 176.7 rainfall days, and 29.69" (754mm) of precipitation is accumulated.Snowfall
In Windham, 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 6:51 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:07 pm EDT.
Sunshine
In September, the average sunshine is 8.2h.UV index
In Windham, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Make use of precautions - Suggestions to resist sunburn are communicated. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Windham have in September?
How high is the UV index in September?
Average temperature in September
Windham, OH
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in September
Windham, OH
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Windham, OH
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in September
Windham, OH
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are May, July and August (78%).
Average rainfall in September
Windham, OH
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is November (1.89").
Average rainfall days in September
Windham, OH
- Average rainfall days in September: 15.3 days
The month with the highest number of rainy days is June (19.3 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in September
Windham, OH
- Average snowfall in September: 0"
The month with the highest snowfall is January (7.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Windham, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.4 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, OH
- 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 18min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Windham, OH
- Average sunshine days in September: 12.4 days
The month with the most sunshine days is September (12.4 days).
The month with the least sunshine days is February (6.9 days).
Average UV index in September
Windham, OH
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Windham, OH
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Windham, OH
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Windham, Ohio, USA
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