September weather forecastWiscasset, ME
September
Weather in September
September, the first month of the autumn in Wiscasset, is still a comfortable month, with an average temperature fluctuating between 67.5°F (19.7°C) and 53.6°F (12°C).Temperature
As August transitions into September, Wiscasset sees a gentle drop in the average high-temperature, transitioning from a warm 74.1°F (23.4°C) to a refreshing 67.5°F (19.7°C). Wiscasset experiences an average low-temperature reading of 53.6°F (12°C) throughout September.Humidity
In September, the average relative humidity is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 10.8 days and typically collects 1.5" (38mm) of precipitation.Snowfall
June through October are months without snowfall.Daylight
In Wiscasset, the average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:02 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 6:20 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Wiscasset, ME
- Average high temperature in September: 67.5°F
The warmest months (with the highest average high temperature) are July and August (74.1°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in September
Wiscasset, ME
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Wiscasset, ME
- Average wind speed in September: 7.5mph
The windiest months (with the highest average wind speed) are January and March (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in September
Wiscasset, ME
- Average humidity in September: 80%
The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Wiscasset, ME
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is December (3.5").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in September
Wiscasset, ME
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is April (15.1 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in September
Wiscasset, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.28").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Wiscasset, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Wiscasset, ME
- Average daylight in September: 12h and 30min
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 24min
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 36min).
Average sunshine days in September
Wiscasset, ME
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is April (11.7 days).
Average UV index in September
Wiscasset, ME
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Wiscasset, ME
- Average cloud cover in September: 34
The months with the most cloud cover are February and March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Wiscasset, ME
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
