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
In the transition to September, Concord observes a minor drop in the average high-temperature, shifting from a warm 81.1°F (27.3°C) in August to an agreeable 73°F (22.8°C). The average temperature during September nights is registered at a mild 55.9°F (13.3°C).Humidity
In Concord, the average relative humidity in September is 76%.Rainfall
The month with the least rainfall is September, when the rain falls for 8.6 days and typically collects 0.71" (18mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Concord, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:11 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:28 pm EDT.
Sunshine
In Concord, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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 many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Concord have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Concord have in September?
What is the UV index intensity in September?
Average temperature in September
Concord, MA
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in September
Concord, MA
- Average pressure in September: 30.05"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
Concord, MA
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Concord, MA
- Average humidity in September: 76%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall in September
Concord, MA
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is October (1.42").
The driest month (with the least rainfall) is September (0.71").
Average rainfall days in September
Concord, MA
- Average rainfall days in September: 8.6 days
The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in September
Concord, MA
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Concord, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Concord, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Concord, MA
- Average sunshine days in September: 19.3 days
The month with the most sunshine days is January (20.3 days).
The months with the least sunshine days are April and June (15.8 days).
Average UV index in September
Concord, MA
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Concord, MA
- Average cloud cover in September: 37
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Concord, MA
- Average visibility in September: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Concord, Massachusetts, USA
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