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 beginning of September, the average high-temperature shows a small decrease, transitioning from an agreeable 73°F (22.8°C) in August to an enjoyable 65.5°F (18.6°C). In September, Shirley Mills reports a consistent average low-temperature of 46°F (7.8°C) during the nights.Humidity
The average relative humidity in September in Shirley Mills is 80%.Rainfall
In Shirley Mills, in September, it is raining for 12.5 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, in Shirley Mills, there are 147.1 rainfall days, and 34.65" (880mm) of precipitation is accumulated.Snowfall
In Shirley Mills, snow does not fall in June through September.Daylight
In Shirley Mills, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:00 am and sunset at 7:15 pm. On the last day of September, sunrise is at 6:36 am and sunset at 6:20 pm EDT.
Sunshine
The average sunshine in September is 7.4h.UV index
In Shirley Mills, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
What are September temperatures in Shirley Mills?
What is the average humidity in September in Shirley Mills?
How many days does it rain in September in Shirley Mills?
When it does not snow in Shirley Mills?
Does it snow in Shirley Mills in September?
What is the average length of the day in September in Shirley Mills?
When is the sunrise / sunset in September in Shirley Mills?
How many hours of sunshine does Shirley Mills have in September?
How high is the UV index in September in Shirley Mills?
Average temperature in September
Shirley Mills, ME
- Average high temperature in September: 65.5°F
The warmest month (with the highest average high temperature) is July (74.8°F).
The month with the lowest average high temperature is January (20.8°F).
- Average low temperature in September: 46°F
The month with the highest average low temperature is July (54.5°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).
Average pressure in September
Shirley 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 (29.9"Hg).
Average wind speed in September
Shirley Mills, ME
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Shirley Mills, ME
- Average humidity in September: 80%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Shirley Mills, ME
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is April (3.54").
The driest month (with the least rainfall) is February (2.24").
Average rainfall days in September
Shirley Mills, ME
- Average rainfall days in September: 12.5 days
The months with the highest number of rainy days are July and August (17.8 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in September
Shirley Mills, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (14.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Shirley Mills, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (20.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Shirley Mills, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).
Average sunshine days in September
Shirley Mills, 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 February (8.1 days).
Average UV index in September
Shirley Mills, ME
- Average UV index in September: 3
The month with the highest UV index is 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
Shirley Mills, ME
- Average cloud cover in September: 46
The month with the most cloud cover is February (Cloud cover 73).
The months with the least cloud cover are July and August (Cloud cover 45).
Average visibility in September
Shirley Mills, ME
- Average visibility in September: 4mi
The months with the highest visibility are May, July, October and November (5mi).
The months with the lowest visibility are January, February, March, April, June, August, September and December (4mi).
Shirley Mills, Maine, USA
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