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
With the arrival of September, Coopers Mills experiences a modest decline in average high-temperatures, transitioning from a moderately hot 75.6°F (24.2°C) in August to an agreeable 68.9°F (20.5°C). Nighttime temperatures hover around an average low of 50.9°F (10.5°C) in September.Humidity
In Coopers Mills, the average relative humidity in September is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 11 days and typically collects 1.57" (40mm) of precipitation.Snowfall
In Coopers Mills, Maine, snow does not fall in June through September.Daylight
In Coopers Mills, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:02 am and sunset at 7:13 pm. On the last day of September, sunrise is at 6:35 am and sunset at 6:20 pm EDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
What is the driest month in Coopers Mills?
How many days 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 in Coopers Mills?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September in Coopers Mills?
Average temperature in September
Coopers Mills, ME
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in September
Coopers Mills, 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
Coopers Mills, ME
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Coopers Mills, ME
- Average humidity in September: 80%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Coopers Mills, ME
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in September
Coopers Mills, ME
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in September
Coopers Mills, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Coopers Mills, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Coopers Mills, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Coopers Mills, ME
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is April (11.5 days).
Average UV index in September
Coopers Mills, 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
Coopers Mills, ME
- Average cloud cover in September: 36
The months with the most cloud cover are February, March and April (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Coopers Mills, ME
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
Coopers Mills, Maine, USA
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