September weather forecastSanford, ME
September
Weather in September
September brings the first hints of autumn to Sanford. The days shorten, the leaves begin to change colors, and there's a nip in the air. The city prepares to bid farewell to summer, as the temperature starts to fall gradually. Daily high temperatures decrease to 68.9°F (20.5°C), signaling a shift towards the cooler months ahead. Despite this, the sunshine remains plentiful, lighting up the city's autumn hues.Temperature
September's arrival subtly correlates with a reduction in the average high-temperature, down from a moderately hot 75.7°F (24.3°C) in August to an agreeable 68.9°F (20.5°C). Sanford reports an average nighttime low-temperature of 53.6°F (12°C) in September.Humidity
In September, the average relative humidity is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 9.5 days and typically collects 0.67" (17mm) of precipitation.Snowfall
In Sanford, snow does not fall in June through October.Daylight
In Sanford, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:07 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:25 pm EDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sanford, 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 (30°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in September
Sanford, 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
Sanford, ME
- Average wind speed in September: 6.7mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Sanford, ME
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are April and November (76%).
Average rainfall in September
Sanford, ME
- Average rainfall in September: 0.67"
The wettest month (with the highest rainfall) is October (1.54").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in September
Sanford, ME
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is May (12.9 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
Sanford, ME
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.83").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Sanford, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sanford, ME
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Sanford, ME
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is April (14.2 days).
Average UV index in September
Sanford, ME
- Average UV index in September: 4
The month with the highest UV index is August (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
Sanford, ME
- Average cloud cover in September: 34
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Sanford, ME
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
