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
As August transitions into September, Grand Lake Stream sees a gentle drop in the average high-temperature, transitioning from a warm 75.9°F (24.4°C) to a pleasant 68.2°F (20.1°C). Grand Lake Stream in September experiences a low-temperature average of 49.1°F (9.5°C).Humidity
In Grand Lake Stream, the average relative humidity in September is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 9 days and typically collects 0.91" (23mm) of precipitation.Snowfall
In Grand Lake Stream, snow does not fall in June through September.Daylight
In Grand Lake Stream, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 5:53 am and sunset at 7:07 pm. On the last day of September, in Grand Lake Stream, sunrise is at 6:28 am and sunset at 6:12 pm EDT.
Sunshine
In Grand Lake Stream, the average sunshine in September is 7.7h.UV index
In Grand Lake Stream, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 4 during September translates into the following guidance:
Put precautions into practice - Protective measures against sun-induced damage are advised. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
What is the usual temperature for Grand Lake Stream in September?
What is the average humidity in September in Grand Lake Stream?
What is the driest month in Grand Lake Stream?
How many days does it rain in September in Grand Lake Stream?
When it does not snow in Grand Lake Stream?
Does it snow in Grand Lake Stream in September?
What is the average length of the day in September in Grand Lake Stream?
When is the sunrise / sunset in September in Grand Lake Stream?
How many hours of sunshine does Grand Lake Stream have in September?
What is the UV index intensity in September in Grand Lake Stream?
Average temperature in September
Grand Lake Stream, ME
- Average high temperature in September: 68.2°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is July (56.1°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in September
Grand Lake Stream, ME
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is September (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Grand Lake Stream, ME
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Grand Lake Stream, ME
- Average humidity in September: 79%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Grand Lake Stream, ME
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is November (1.61").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in September
Grand Lake Stream, ME
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is April (14.2 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in September
Grand Lake Stream, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Grand Lake Stream, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is March (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grand Lake Stream, 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 48min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in September
Grand Lake Stream, ME
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is September (18.4 days).
The month with the least sunshine days is April (11.6 days).
Average UV index in September
Grand Lake Stream, ME
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in September
Grand Lake Stream, ME
- Average cloud cover in September: 43
The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in September
Grand Lake Stream, 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).
Grand Lake Stream, Maine, USA
Weather forecast for your location
2. Allow the app to use your location