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 indicates a minor shift in the average high-temperature, from August's warm 79.7°F (26.5°C) to a pleasant 72.3°F (22.4°C). In Southwick, in September, the average low-temperature is a fresh 52.9°F (11.6°C).Humidity
In September, the average relative humidity in Southwick is 79%.Rainfall
September is the month with the least rainfall in Southwick, Massachusetts. Rain falls for 13.5 days and accumulates 2.17" (55mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Southwick is 12h and 28min.On the first day of September, sunrise is at 6:17 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:33 pm EDT.
Sunshine
The average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index in Southwick is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What is the temperature in September in Southwick?
What is the average humidity in September in Southwick?
What is the driest month in Southwick?
How many days does it rain in September in Southwick?
When it does not snow in Southwick?
Does it snow in Southwick in September?
How many hours of daylight does Southwick have in September?
What time are sunrise and sunset in September in Southwick?
How long on average sun shines in September in Southwick?
What is the UV index intensity in September in Southwick?
Average temperature in September
Southwick, 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: 52.9°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in September
Southwick, MA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Southwick, MA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Southwick, 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
Southwick, MA
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in September
Southwick, MA
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in September
Southwick, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Southwick, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Southwick, 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: 8h and 2min
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
Southwick, MA
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is January (16.6 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in September
Southwick, MA
- Average UV index in September: 4
The month with the highest UV index is June (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
Southwick, MA
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Southwick, 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).
Southwick, Massachusetts, USA
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