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 start of September signals a gentle decrease in the average high-temperature, transitioning from a warm 77.5°F (25.3°C) in August to a pleasant 70.3°F (21.3°C). Cornish temperatures generally rest at a low of 49.5°F (9.7°C) during the September nights.Humidity
The average relative humidity in September is 79%.Rainfall
The month with the least rainfall in Cornish is September, when the rain falls for 10.5 days and typically collects 1.34" (34mm) of precipitation.Snowfall
In Cornish, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of September in Cornish, sunrise is at 6:07 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:25 pm EDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In Cornish, 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: The maximum UV index of 3 during September leads to these instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What is the usual temperature for Cornish in September?
What is the average humidity in September in Cornish?
What is the driest month in Cornish?
How many days does it rain in September in Cornish?
When it does not snow in Cornish?
Does it snow in Cornish in September?
What is the average length of the day in September in Cornish?
What time are sunrise and sunset in September in Cornish?
How long on average sun shines in September in Cornish?
How high is the UV index in September in Cornish?
Average temperature in September
Cornish, ME
- Average high temperature in September: 70.3°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in September
Cornish, ME
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Cornish, ME
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Cornish, ME
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, May and November (77%).
Average rainfall in September
Cornish, ME
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is October (3.15").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in September
Cornish, ME
- Average rainfall days in September: 10.5 days
The months with the highest number of rainy days are April and July (14.3 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in September
Cornish, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Cornish, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Cornish, 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 3min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Cornish, ME
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is January (17.8 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in September
Cornish, ME
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Cornish, ME
- Average cloud cover in September: 36
The months with the most cloud cover are March and April (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Cornish, 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).
Cornish, Maine, USA
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