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 sees a slight reduction in average high-temperature, with a shift from a moderately hot 74.5°F (23.6°C) in August to a refreshing 66.4°F (19.1°C). Knowles Corner throughout September, records an average low-temperature of 47.1°F (8.4°C).Humidity
The average relative humidity in September in Knowles Corner, Maine, is 80%.Rainfall
In September, the rain falls for 12.6 days. Throughout September, 2.32" (59mm) of precipitation is accumulated. Throughout the year, there are 147.4 rainfall days, and 31.81" (808mm) of precipitation is accumulated.Snowfall
In Knowles Corner, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 32min.On the first day of the month, sunrise is at 5:54 am and sunset at 7:11 pm. On the last day of September, in Knowles Corner, sunrise is at 6:31 am and sunset at 6:14 pm EDT.
Sunshine
In September, the average sunshine is 7.4h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 3 during September translates into these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What is the usual temperature for Knowles Corner in September?
What is the average humidity in September in Knowles Corner?
How many days does it rain in September in Knowles Corner?
When it does not snow in Knowles Corner?
Does it snow in Knowles Corner in September?
What is the average length of the day in September in Knowles Corner?
When is the sunrise / sunset in September in Knowles Corner?
How many hours of sunshine does Knowles Corner have in September?
How high is the UV index in September in Knowles Corner?
Average temperature in September
Knowles Corner, ME
- Average high temperature in September: 66.4°F
The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is January (21.9°F).
- Average low temperature in September: 47.1°F
The month with the highest average low temperature is July (55.2°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).
Average pressure in September
Knowles Corner, ME
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is September (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Knowles Corner, ME
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Knowles Corner, ME
- Average humidity in September: 80%
The months with the highest relative humidity are January, February and March (91%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
Knowles Corner, ME
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is July (2.17").
Average rainfall days in September
Knowles Corner, ME
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Knowles Corner, ME
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (13.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Knowles Corner, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Knowles Corner, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).
Average sunshine days in September
Knowles Corner, ME
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is April (8.7 days).
Average UV index in September
Knowles Corner, ME
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in September
Knowles Corner, ME
- Average cloud cover in September: 44
The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in September
Knowles Corner, ME
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).
Knowles Corner, Maine, USA
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