September weather forecastMaine, MN
September
Weather in September
September, the first month of the autumn in Maine, is also an agreeable month, with an average temperature varying between 69.8°F (21°C) and 51.1°F (10.6°C).Temperature
The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's moderately hot 78.3°F (25.7°C) to an agreeable 69.8°F (21°C). An average temperature of 51.1°F (10.6°C) is recorded during the nights in September.Humidity
The average relative humidity in September is 69%.Rainfall
In September, the rain falls for 8.5 days. Throughout September, 1.1" (28mm) of precipitation is accumulated. Throughout the year, there are 95.9 rainfall days, and 14.45" (367mm) of precipitation is accumulated.Snowfall
In Maine, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 32min.On the first day of the month, sunrise is at 6:44 am and sunset at 8:01 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:04 pm CDT.
Sunshine
In September, the average sunshine is 8.8h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. To guard against the harmful effects of the Sun, minimize exposure during midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Maine, MN
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (16.2°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (3.2°F).
Average pressure in September
Maine, MN
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Maine, MN
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is October (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).
Average humidity in September
Maine, MN
- Average humidity in September: 69%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (68%).
Average rainfall in September
Maine, MN
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is June (2.64").
The driest months (with the least rainfall) are January and November (0.39").
Average rainfall days in September
Maine, MN
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is June (15.5 days).
The month with the least rainy days is February (1 days).
Average snowfall in September
Maine, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Maine, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Maine, MN
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Maine, MN
- Average sunshine days in September: 20.1 days
The months with the most sunshine days are September and November (20.1 days).
The month with the least sunshine days is June (12 days).
Average UV index in September
Maine, MN
- 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, November and December (UV index 1).
Average cloud cover in September
Maine, MN
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Maine, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
