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 arrival of September corresponds with a minor reduction in the average high-temperature, down from August's moderately hot 75.4°F (24.1°C) to an enjoyable 67.3°F (19.6°C). The temperature in Crystal lowers to an average of 47.8°F (8.8°C) during September nights.Humidity
In September, the average relative humidity is 79%.Rainfall
In September, the rain falls for 12 days. Throughout September, 2.05" (52mm) of precipitation is accumulated. Throughout the year, in Crystal, there are 156.1 rainfall days, and 26.89" (683mm) of precipitation is accumulated.Snowfall
In Crystal, snow does not fall in June through September.Daylight
In Crystal, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 5:55 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 6:14 pm EDT.
Sunshine
The average sunshine in September is 7.8h.UV index
In September, the average daily maximum UV index in Crystal is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What are September temperatures in Crystal?
What is the average humidity in September in Crystal?
How many days does it rain in September in Crystal?
When it does not snow in Crystal?
Does it snow in Crystal in September?
How many hours of daylight does Crystal have in September?
What time are sunrise and sunset in September in Crystal?
How long on average sun shines in September in Crystal?
What is the UV index intensity in September in Crystal?
Average temperature in September
Crystal, ME
- Average high temperature in September: 67.3°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (22.6°F).
- Average low temperature in September: 47.8°F
The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in September
Crystal, ME
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are September and November (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Crystal, ME
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is March (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Crystal, ME
- Average humidity in September: 79%
The months with the highest relative humidity are February and March (89%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Crystal, ME
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is April (2.83").
The driest months (with the least rainfall) are March and July (1.73").
Average rainfall days in September
Crystal, ME
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is June (17.1 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in September
Crystal, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (10.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Crystal, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Crystal, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in September
Crystal, ME
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is September (16.3 days).
The month with the least sunshine days is April (9.3 days).
Average UV index in September
Crystal, 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 and December (UV index 1).
Average cloud cover in September
Crystal, ME
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Crystal, ME
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February and March (4mi).
Crystal, Maine, USA
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