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 advent of September brings a subtle shift in temperature, with the average high moving from a warm 75.9°F (24.4°C) in August to a pleasant 68.5°F (20.3°C). An average nighttime temperature of 47.5°F (8.6°C) is noted during the month of September.Humidity
The average relative humidity in September in Stow is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 10.3 days and accumulates 0.94" (24mm) of precipitation.Snowfall
In Stow, snow does not fall in June through September.Daylight
In Stow, Maine, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:07 am and sunset at 7:19 pm. On the last day of September, in Stow, sunrise is at 6:41 am and sunset at 6:26 pm EDT.
Sunshine
In Stow, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September in Stow is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 3 during September leads to these instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Stow in September?
What is the average humidity in September in Stow?
What is the driest month in Stow?
How much does it rain in Stow in September?
When it does not snow in Stow?
Does it snow in Stow in September?
What is the average length of the day in September in Stow?
What time are sunrise and sunset in September in Stow?
How long on average sun shines in September in Stow?
How high is the UV index in September in Stow?
Average temperature in September
Stow, ME
- Average high temperature in September: 68.5°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in September: 47.5°F
The month with the highest average low temperature is July (55.8°F).
The coldest month (with the lowest average low temperature) is January (10.4°F).
Average pressure in September
Stow, ME
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Stow, ME
- Average wind speed in September: 4.4mph
The windiest month (with the highest average wind speed) is January (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Stow, ME
- Average humidity in September: 79%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are May and November (77%).
Average rainfall in September
Stow, ME
- Average rainfall in September: 0.94"
The wettest months (with the highest rainfall) are April and October (2.17").
The driest month (with the least rainfall) is September (0.94").
Average rainfall days in September
Stow, ME
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is February (9.8 days).
Average snowfall in September
Stow, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Stow, ME
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stow, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Stow, ME
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is April (10.1 days).
Average UV index in September
Stow, ME
- Average UV index in September: 3
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, April, October, November and December (UV index 2).
Average cloud cover in September
Stow, ME
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are August and September (Cloud cover 37).
Average visibility in September
Stow, ME
- Average visibility in September: 4mi
The months with the highest visibility are April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February, March and September (4mi).
Stow, Maine, USA
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