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 move into September indicates a slight reduction in the average high-temperature, down from August's agreeable 72°F (22.2°C) to a comfortable 64.8°F (18.2°C). An average nighttime temperature of 45.5°F (7.5°C) is recorded in Dennistown during September.Humidity
In Dennistown, the average relative humidity in September is 81%.Rainfall
In September, the rain falls for 12.9 days. Throughout September, 2.28" (58mm) of precipitation is accumulated. In Dennistown, during the entire year, the rain falls for 149.8 days and collects up to 32.24" (819mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Dennistown, Maine, is 12h and 31min.On the first day of the month, sunrise is at 6:03 am and sunset at 7:18 pm. On the last day of September, sunrise is at 6:39 am and sunset at 6:22 pm EDT.
Sunshine
In September, the average sunshine is 7.7h.UV index
In Dennistown, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A typical high UV index of 3 in September suggests the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Dennistown in September?
What is the average humidity in September in Dennistown?
How many days does it rain in September in Dennistown?
When it does not snow in Dennistown?
Does it snow in Dennistown in September?
What is the average length of the day in September in Dennistown?
When is the sunrise / sunset in September in Dennistown?
How many hours of sunshine does Dennistown have in September?
What is the UV index intensity in September in Dennistown?
Average temperature in September
Dennistown, ME
- Average high temperature in September: 64.8°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 (19.8°F).
- Average low temperature in September: 45.5°F
The month with the highest average low temperature is July (54.1°F).
The coldest month (with the lowest average low temperature) is January (7°F).
Average pressure in September
Dennistown, ME
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Dennistown, ME
- Average wind speed in September: 6.2mph
The windiest months (with the highest average wind speed) are February and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Dennistown, ME
- Average humidity in September: 81%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
Dennistown, ME
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is February (2.17").
Average rainfall days in September
Dennistown, ME
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is August (17.6 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Dennistown, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (14.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Dennistown, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (21.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dennistown, 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 months with the most sunshine are July and August (Average sunshine: 9h and 24min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).
Average sunshine days in September
Dennistown, ME
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is September (13.8 days).
The month with the least sunshine days is February (6.4 days).
Average UV index in September
Dennistown, ME
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February, March and December (UV index 1).
Average cloud cover in September
Dennistown, ME
- Average cloud cover in September: 45
The month with the most cloud cover is February (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 43).
Average visibility in September
Dennistown, ME
- Average visibility in September: 4mi
The months with the highest visibility are May, June, July, October and November (5mi).
The months with the lowest visibility are January, February, March, April, August, September and December (4mi).
Dennistown, Maine, USA
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