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
Monticello's weather subtly changes with the onset of September, barely falling from a warm 74.5°F (23.6°C) in August to an enjoyable 66.4°F (19.1°C). Throughout the month of September, the nighttime temperature in Monticello, Maine, dips to an average of 47.1°F (8.4°C).Humidity
The average relative humidity in September in Monticello is 80%.Rainfall
In Monticello, in September, it is raining for 12.6 days, with typically 2.32" (59mm) of accumulated precipitation. Throughout the year, in Monticello, there are 147.4 rainfall days, and 31.81" (808mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Monticello.Daylight
In Monticello, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 5:52 am and sunset at 7:09 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 6:12 pm EDT.
Sunshine
In September, the average sunshine in Monticello, Maine, is 7.4h.UV index
In Monticello, Maine, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, a daily UV index of 3 turns into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
What is the temperature in September in Monticello?
What is the average humidity in September in Monticello?
How much does it rain in Monticello in September?
When it does not snow in Monticello?
Does it snow in Monticello in September?
What is the average length of the day in September in Monticello?
When is the sunrise / sunset in September in Monticello?
How many hours of sunshine does Monticello have in September?
What is the UV index intensity in September in Monticello?
Average temperature in September
Monticello, ME
- Average high temperature in September: 66.4°F
The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is January (21.9°F).
- Average low temperature in September: 47.1°F
The month with the highest average low temperature is July (55.2°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).
Average pressure in September
Monticello, ME
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is September (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Monticello, ME
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Monticello, ME
- Average humidity in September: 80%
The months with the highest relative humidity are January, February and March (91%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
Monticello, ME
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is July (2.17").
Average rainfall days in September
Monticello, ME
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Monticello, ME
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (13.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Monticello, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Monticello, ME
- Average daylight in September: 12h and 3min
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: 7h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).
Average sunshine days in September
Monticello, 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 April (8.7 days).
Average UV index in September
Monticello, ME
- Average UV index in September: 3
The months with the highest UV index are June and 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
Monticello, ME
- Average cloud cover in September: 44
The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in September
Monticello, ME
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).
Monticello, Maine, USA
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