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
September in Leominster brings a slight decrease in the average high-temperature, shifting from a warm 79.3°F (26.3°C) in August to a pleasant 71.6°F (22°C). An average temperature of 53.6°F (12°C) is recorded during the nights in September.Humidity
In September, the average relative humidity in Leominster, Massachusetts, is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.7 days and typically collects 1.73" (44mm) of precipitation.Snowfall
In Leominster, snow does not fall in June through September.Daylight
In Leominster, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:12 am and sunset at 7:20 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:29 pm EDT.
Sunshine
In September, the average sunshine in Leominster, Massachusetts, is 8.1h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. To guard against the harmful effects of the Sun, minimize exposure during midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What is the average September temperature in Leominster?
What is the average humidity in September in Leominster?
What is the driest month in Leominster?
How much does it rain in Leominster in September?
When it does not snow in Leominster?
Does it snow in Leominster in September?
How many hours of daylight does Leominster have in September?
What time are sunrise and sunset in September in Leominster?
How long on average sun shines in September in Leominster?
What is the UV index reading in September in Leominster?
Average temperature in September
Leominster, MA
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in September: 53.6°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°F).
Average pressure in September
Leominster, 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 (29.92"Hg).
Average wind speed in September
Leominster, MA
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Leominster, MA
- Average humidity in September: 78%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Leominster, MA
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Leominster, MA
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is May (15.5 days).
The months with the least rainy days are January and February (7.3 days).
Average snowfall in September
Leominster, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Leominster, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Leominster, MA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Leominster, MA
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in September
Leominster, MA
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Leominster, MA
- Average cloud cover in September: 40
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Leominster, MA
- Average visibility in September: 5mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
Leominster, Massachusetts, USA
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