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
In September, the meteorological conditions change slightly, with the average high-temperature moving from a warm 76.8°F (24.9°C) in August to an agreeable 69.6°F (20.9°C). During the nights in September, South Casco experiences a consistent average temperature of 51.3°F (10.7°C).Humidity
The average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 9.2 days and accumulates 0.87" (22mm) of precipitation.Snowfall
June through October are months without snowfall.Daylight
The average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:06 am and sunset at 7:17 pm. On the last day of September, sunrise is at 6:39 am and sunset at 6:24 pm EDT.
Sunshine
The average sunshine in September in South Casco is 8.5h.UV index
The average daily maximum UV index in September in South Casco is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Frequently asked questions
What are September temperatures in South Casco?
What is the average humidity in September in South Casco?
What is the driest month in South Casco?
How many days does it rain in September in South Casco?
When it does not snow in South Casco?
How many hours of daylight does South Casco have in September?
When are sunrise and sunset in September in South Casco?
How many hours of sunshine does South Casco have in September?
What is the UV index reading in September in South Casco?
Average temperature in September
South Casco, ME
- Average high temperature in September: 69.6°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in September: 51.3°F
The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in September
South Casco, ME
- Average pressure in September: 30.05"Hg
The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
South Casco, ME
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
South Casco, ME
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
South Casco, ME
- Average rainfall in September: 0.87"
The wettest months (with the highest rainfall) are June and October (1.77").
The driest month (with the least rainfall) is September (0.87").
Average rainfall days in September
South Casco, ME
- Average rainfall days in September: 9.2 days
The months with the highest number of rainy days are June and July (14.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in September
South Casco, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.35").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
South Casco, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
South Casco, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
South Casco, ME
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is January (21.3 days).
The month with the least sunshine days is July (13.6 days).
Average UV index in September
South Casco, ME
- Average UV index in September: 4
The months with the highest UV index are 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
South Casco, ME
- Average cloud cover in September: 34
The months with the most cloud cover are February and March (Cloud cover 50).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in September
South Casco, ME
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).
South Casco, Maine, USA
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