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
In September, the average high-temperature marginally decreases from a moderately hot 73.6°F (23.1°C) in August to a comfortable 64.9°F (18.3°C). During September, an average low-temperature of 46°F (7.8°C) is observed.Humidity
In Caribou, the average relative humidity in September is 80%.Rainfall
In September, the rain falls for 13.5 days. Throughout September, 2.32" (59mm) of precipitation is accumulated. In Caribou, during the entire year, the rain falls for 144 days and collects up to 32.95" (837mm) of precipitation.Snowfall
June through September are months without snowfall in Caribou.Daylight
In September, the average length of the day is 12h and 32min.On the first day of the month, sunrise is at 5:52 am and sunset at 7:11 pm. On the last day of September, sunrise is at 6:30 am and sunset at 6:13 pm EDT.
Sunshine
In September, the average sunshine in Caribou, Maine, is 7.3h.UV index
In Caribou, Maine, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 3 in September leads to these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
What is the temperature in September in Caribou?
What is the average humidity in September in Caribou?
How many days does it rain in September in Caribou?
When it does not snow in Caribou?
Does it snow in Caribou in September?
What is the average length of the day in September in Caribou?
When are sunrise and sunset in September in Caribou?
How long on average sun shines in September in Caribou?
What is the UV index intensity in September in Caribou?
Average temperature in September
Caribou, ME
- Average high temperature in September: 64.9°F
The warmest month (with the highest average high temperature) is July (75°F).
The month with the lowest average high temperature is January (19.4°F).
- Average low temperature in September: 46°F
The month with the highest average low temperature is July (54.7°F).
The coldest month (with the lowest average low temperature) is January (4.3°F).
Average pressure in September
Caribou, ME
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is September (30.02"Hg).
The months with the lowest atmospheric pressure are June and July (29.89"Hg).
Average wind speed in September
Caribou, ME
- Average wind speed in September: 6.9mph
The windiest months (with the highest average wind speed) are February and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in September
Caribou, ME
- Average humidity in September: 80%
The months with the highest relative humidity are February and March (93%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Caribou, ME
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is April (3.46").
The driest month (with the least rainfall) is February (2.2").
Average rainfall days in September
Caribou, ME
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is June (16.9 days).
The month with the least rainy days is January (4.2 days).
Average snowfall in September
Caribou, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (15.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Caribou, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (21 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Caribou, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is February (Average sunshine: 2h and 6min).
Average sunshine days in September
Caribou, ME
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is September (14.7 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in September
Caribou, 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
Caribou, ME
- Average cloud cover in September: 45
The month with the most cloud cover is February (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 43).
Average visibility in September
Caribou, ME
- Average visibility in September: 5mi
The month with the highest visibility is May (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Caribou, Maine, USA
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