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's arrival comes with a mild decrease in the average high-temperature, moving subtly from a moderately hot 77°F (25°C) in August to an agreeable 69.4°F (20.8°C). During the month of September, the temperature generally drops to a low average of 49.1°F (9.5°C).Humidity
In September, the average relative humidity in Norway, Maine, is 79%.Rainfall
September is the month with the least rainfall in Norway. Rain falls for 11.4 days and accumulates 1.42" (36mm) of precipitation.Snowfall
In Norway, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:06 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:24 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Norway, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 3 in September translates into these instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
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?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Norway, ME
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in September
Norway, 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
Norway, ME
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are January, March and April (6.2mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Norway, ME
- Average humidity in September: 79%
The months with the highest relative humidity are January, February and March (85%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Norway, ME
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is October (3.15").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in September
Norway, ME
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in September
Norway, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (10.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Norway, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Norway, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Norway, ME
- Average sunshine days in September: 17 days
The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in September
Norway, ME
- Average UV index in September: 3
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, October, November and December (UV index 2).
Average cloud cover in September
Norway, ME
- Average cloud cover in September: 36
The months with the most cloud cover are February, March and April (Cloud cover 50).
The months with the least cloud cover are August and September (Cloud cover 36).
Average visibility in September
Norway, ME
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Norway, Maine, USA
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