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
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a moderately hot 79.5°F (26.4°C) in August to a pleasant 72.3°F (22.4°C). During September, Belchertown records a consistent average nighttime temperature of 53.4°F (11.9°C).Humidity
The average relative humidity in September in Belchertown is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 12 days and typically collects 1.73" (44mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Belchertown, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:15 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:32 pm EDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In September, a regular UV index of 4 translates into these guidelines:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. It's recommended to limit sun exposure when its radiation is at its peak during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Belchertown, MA
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (81.5°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°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in September
Belchertown, MA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Belchertown, MA
- Average wind speed in September: 5.7mph
The windiest months (with the highest average wind speed) are January, February and March (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in September
Belchertown, MA
- Average humidity in September: 78%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Belchertown, MA
- Average rainfall in September: 1.73"
The wettest months (with the highest rainfall) are October and December (2.83").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Belchertown, MA
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in September
Belchertown, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Belchertown, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Belchertown, 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 6min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Belchertown, MA
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (17.5 days).
The months with the least sunshine days are March and June (12.9 days).
Average UV index in September
Belchertown, 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
Belchertown, MA
- Average cloud cover in September: 39
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Belchertown, 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).
Belchertown, Massachusetts, USA
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