Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The arrival of August sees a recorded average high-temperature of a still warm 80.6°F (27°C), showing little divergence from the previous month's conditions. Throughout the August nights, Chelmsford encounters a low-temperature of 62.2°F (16.8°C).Heat index
The heat index for August is appraised at 84.2°F (29°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Humidity
In Chelmsford, the average relative humidity in August is 74%.Rainfall
In Chelmsford, in August, during 13.1 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. Throughout the year, there are 145.9 rainfall days, and 27.48" (698mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Chelmsford.Daylight
In Chelmsford, Massachusetts, the average length of the day in August is 13h and 52min.On the first day of the month, sunrise is at 5:38 am and sunset at 8:05 pm. On the last day of August, sunrise is at 6:10 am and sunset at 7:21 pm EDT.
Sunshine
With an average of 10.6h of sunshine, August has the most sunshine of the year in Chelmsford.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 6 in August converts into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What is the usual temperature for Chelmsford in August?
What is the average humidity in August in Chelmsford?
How much does it rain in Chelmsford in August?
When it does not snow in Chelmsford?
What is the average length of the day in August in Chelmsford?
What time are sunrise and sunset in August in Chelmsford?
What month has the most sunshine in Chelmsford?
How many hours of sunshine does Chelmsford have in August?
What are the months with the highest UV index in Chelmsford?
What is the UV index reading in August in Chelmsford?
Average temperature in August
Chelmsford, MA
- Average high temperature in August: 80.6°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in August: 62.2°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in August
Chelmsford, MA
- Average pressure in August: 29.97"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 August
Chelmsford, MA
- Average wind speed in August: 5.5mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in August
Chelmsford, MA
- Average humidity in August: 74%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (70%).
Average rainfall in August
Chelmsford, MA
- Average rainfall in August: 1.93"
The wettest month (with the highest rainfall) is December (2.87").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in August
Chelmsford, MA
- Average rainfall days in August: 13.1 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in August
Chelmsford, MA
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Chelmsford, MA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Chelmsford, MA
- Average daylight in August: 13h and 5min
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 August: 10h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in August
Chelmsford, MA
- Average sunshine days in August: 15.9 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (13.6 days).
Average UV index in August
Chelmsford, MA
- Average UV index in August: 6
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 August
Chelmsford, MA
- Average cloud cover in August: 31
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in August
Chelmsford, MA
- Average visibility in August: 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).
Chelmsford, Massachusetts, USA
Weather forecast for your location
2. Allow the app to use your location
