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 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
Boston's average high-temperature marks a still hot 86.9°F (30.5°C) with the advent of September, closely mirroring that of the preceding month. Boston's average low-temperature for the month of September records at an agreeable 69.3°F (20.7°C).Heat index
During September, the heat index is appraised at a sweltering 102.2°F (39°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
The months with the highest humidity are August, September and December, with an average relative humidity of 78%.Rainfall
In Boston, in September, it is raining for 14.9 days, with typically 1.57" (40mm) of accumulated precipitation. Throughout the year, there are 150.1 rainfall days, and 19.06" (484mm) of precipitation is accumulated.Snowfall
In Boston, snow does not fall in January, March through December.Daylight
The average length of the day in September in Boston is 12h and 20min.On the first day of the month, sunrise is at 7:11 am and sunset at 7:57 pm. On the last day of September, sunrise is at 7:28 am and sunset at 7:21 pm EDT.
Sunshine
The average sunshine in September in Boston is 8.6h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In September, an average UV index of 6 transforms into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Boston?
What is the most humid month in Boston?
What is the average humidity in September in Boston?
How many days does it rain in September in Boston?
When it does not snow in Boston?
What is the average length of the day in September in Boston?
What time are sunrise and sunset in September in Boston?
How many hours of sunshine does Boston have in September?
What is the UV index intensity in September in Boston?
Average temperature in September
Boston, GA
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (59.5°F).
- Average low temperature in September: 69.3°F
The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (42.3°F).
Average pressure in September
Boston, GA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in September
Boston, GA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Boston, GA
- Average humidity in September: 78%
The months with the highest relative humidity are August, September and December (78%).
The months with the lowest relative humidity are January, May and November (72%).
Average rainfall in September
Boston, GA
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is June (3.11").
The driest month (with the least rainfall) is November (0.75").
Average rainfall days in September
Boston, GA
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is July (21.5 days).
The month with the least rainy days is November (6.5 days).
Average snowfall days in September
Boston, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Boston, GA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Boston, GA
- Average sunshine days in September: 11.9 days
The month with the most sunshine days is November (22.4 days).
The month with the least sunshine days is August (6 days).
Average UV index in September
Boston, GA
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Boston, GA
- Average cloud cover in September: 33
The month with the most cloud cover is December (Cloud cover 41).
The months with the least cloud cover are May and October (Cloud cover 29).
Average visibility in September
Boston, GA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are July, August and September (5mi).
Boston, Georgia, USA
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