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 signals a subtle shift in temperature, down from a moderately hot 78.4°F (25.8°C) in August to a pleasant 71.4°F (21.9°C). Throughout September nights, Glen Grove Annex experiences a consistent temperature average of 53.4°F (11.9°C).Humidity
In Glen Grove Annex, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 13 days and accumulates 1.81" (46mm) of precipitation.Snowfall
In Glen Grove Annex, snow does not fall in June through September.Daylight
In Glen Grove Annex, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:14 am and sunset at 7:21 pm. On the last day of September, sunrise is at 6:44 am and sunset at 6:30 pm EDT.
Sunshine
In Glen Grove Annex, the average sunshine in September is 7.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 4 during September translates into the following guidance:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
What are the temperatures in Glen Grove Annex in September?
What is the average humidity in September in Glen Grove Annex?
What is the driest month in Glen Grove Annex?
How much does it rain in Glen Grove Annex in September?
When it does not snow in Glen Grove Annex?
Does it snow in Glen Grove Annex in September?
How many hours of daylight does Glen Grove Annex have in September?
When is the sunrise / sunset in September in Glen Grove Annex?
How many hours of sunshine does Glen Grove Annex have in September?
What is the UV index reading in September in Glen Grove Annex?
Average temperature in September
Glen Grove Annex, MA
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in September
Glen Grove Annex, MA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Glen Grove Annex, MA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Glen Grove Annex, MA
- Average humidity in September: 79%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Glen Grove Annex, MA
- Average rainfall in September: 1.81"
The wettest months (with the highest rainfall) are October and November (2.76").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in September
Glen Grove Annex, MA
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (6.4 days).
Average snowfall in September
Glen Grove Annex, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Glen Grove Annex, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Glen Grove Annex, MA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 7h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Glen Grove Annex, MA
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in September
Glen Grove Annex, MA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Glen Grove Annex, MA
- Average cloud cover in September: 43
The month with the most cloud cover is March (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in September
Glen Grove Annex, MA
- Average visibility in September: 5mi
The months with the highest visibility are April and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and November (5mi).
Glen Grove Annex, Massachusetts, USA
Weather forecast for your location
2. Allow the app to use your location
