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
September marks a gentle change in average high-temperature, declining from August's pleasant 72.3°F (22.4°C) to a comfortable 66.6°F (19.2°C). Nighttime temperatures in Merepoint hover around an average low of 55°F (12.8°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 days and typically collects 0.94" (24mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 30min.On the first day of the month, sunrise is at 6:04 am and sunset at 7:15 pm. On the last day of September, sunrise is at 6:37 am and sunset at 6:22 pm EDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In Merepoint, 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 the ordinary person.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Be vigilant - Preventing sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Merepoint have in September?
How high is the UV index in September?
Average temperature in September
Merepoint, ME
- Average high temperature in September: 66.6°F
The warmest month (with the highest average high temperature) is August (72.3°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in September: 55°F
The months with the highest average low temperature are July and August (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in September
Merepoint, ME
- Average pressure in September: 30.05"Hg
The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Merepoint, ME
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in September
Merepoint, ME
- Average humidity in September: 79%
The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (74%).
Average rainfall in September
Merepoint, ME
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is October (2.28").
The driest month (with the least rainfall) is September (0.94").
Average rainfall days in September
Merepoint, ME
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is July (14.5 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in September
Merepoint, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.39").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Merepoint, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Merepoint, 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: 9h and 0min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in September
Merepoint, ME
- Average sunshine days in September: 19 days
The month with the most sunshine days is September (19 days).
The month with the least sunshine days is July (14.7 days).
Average UV index in September
Merepoint, ME
- Average UV index in September: 4
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, November and December (UV index 2).
Average cloud cover in September
Merepoint, ME
- Average cloud cover in September: 31
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Merepoint, 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).
Merepoint, Maine, USA
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