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
The onset of September brings a small shift in high-temperatures, falling from a pleasant 71.8°F (22.1°C) in August to a comfortable 64.4°F (18°C). In September, the nighttime temperature lowers to an average of 45°F (7.2°C).Humidity
In Mountainview, the average relative humidity in September is 82%.Rainfall
In Mountainview, in September, it is raining for 13.5 days, with typically 2.6" (66mm) of accumulated precipitation. In Mountainview, during the entire year, the rain falls for 152.5 days and collects up to 30.31" (770mm) of precipitation.Snowfall
In Mountainview, Maine, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:06 am and sunset at 7:19 pm. On the last day of September, sunrise is at 6:40 am and sunset at 6:24 pm EDT.
Sunshine
In September, the average sunshine is 7.6h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the average maximum UV index of 3 translates into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Mountainview in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in Mountainview in September?
How many hours of daylight does Mountainview have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Mountainview have in September?
What is the UV index intensity in September?
Average temperature in September
Mountainview, ME
- Average high temperature in September: 64.4°F
The warmest month (with the highest average high temperature) is July (73.9°F).
The month with the lowest average high temperature is January (20.8°F).
- Average low temperature in September: 45°F
The month with the highest average low temperature is July (52.9°F).
The coldest month (with the lowest average low temperature) is January (7°F).
Average pressure in September
Mountainview, ME
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Mountainview, ME
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are February, March and April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Mountainview, ME
- Average humidity in September: 82%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Mountainview, ME
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is October (3.23").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days in September
Mountainview, ME
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Mountainview, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (14.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mountainview, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (22.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mountainview, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).
Average sunshine days in September
Mountainview, ME
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (5.6 days).
Average UV index in September
Mountainview, 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 February, March and December (UV index 1).
Average cloud cover in September
Mountainview, ME
- Average cloud cover in September: 48
The month with the most cloud cover is February (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 46).
Average visibility in September
Mountainview, ME
- Average visibility in September: 4mi
The months with the highest visibility are May and June (5mi).
The months with the lowest visibility are January, February, March, April, July, August, September, October, November and December (4mi).
Mountainview, Maine, USA
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