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
The arrival of September suggests a slight decrease in the average high-temperature, moving from a moderately hot 76.5°F (24.7°C) in August to an agreeable 68.9°F (20.5°C). Winslow observes an average low-temperature of 48.9°F (9.4°C) during September.Humidity
The average relative humidity in September is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 9.7 days and typically collects 1.54" (39mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September, sunrise is at 6:01 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
In September, the average sunshine is 8.1h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Winslow in September?
What is the average humidity in September?
What is the driest month?
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?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Winslow, ME
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (25.3°F).
- Average low temperature in September: 48.9°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in September
Winslow, 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
Winslow, ME
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Winslow, ME
- Average humidity in September: 80%
The months with the highest relative humidity are February and March (85%).
The months with the lowest relative humidity are April and November (78%).
Average rainfall in September
Winslow, ME
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is April (3.03").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in September
Winslow, ME
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
Winslow, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (8.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Winslow, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Winslow, 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 1min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Winslow, ME
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is April (11.5 days).
Average UV index in September
Winslow, 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
Winslow, ME
- Average cloud cover in September: 40
The months with the most cloud cover are February, March and April (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 40).
Average visibility in September
Winslow, ME
- Average visibility in September: 5mi
The months with the highest visibility are November and December (6mi).
The month with the lowest visibility is August (4mi).
Winslow, Maine, USA
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