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United StatesThe climate of Chelmsford
The current climate in Chelmsford features temperatures ranging from a high of 28°C to a low of 2°C throughout the year. The average yearly temperature is around 16°C. At night, temperatures in the colder months average around -7°C and in the warmer months around 17°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Chelmsford, Massachusetts.
Temperature records
The highest temperature recorded in Chelmsford in recent years was 37°C in July 2022. The lowest daytime temperature recorded was -15°C in January 2019.
Precipitation and snowfall
On average, Chelmsford gets 1517 mm of precipitation each year. Of this, about 106 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Chelmsford?
The best time to visit Chelmsford for sunny weather is May, June, August and September. During this period, you'll have nice temperatures and not too much rain, making it a great time to visit Chelmsford. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
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Climate Table of Chelmsford
The climate table of Chelmsford shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 2 | 3 | 9 | 15 | 21 | 26 | 28 | 28 | 24 | 18 | 11 | 6 |
| Temp. min (°C) | -6 | -7 | -2 | 4 | 10 | 15 | 18 | 17 | 13 | 8 | 1 | -3 |
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| Precipitation (mm) | 138 | 211 | 70 | 122 | 109 | 116 | 188 | 114 | 85 | 132 | 93 | 139 |
| Snow (cm) | 52 | 32 | 11 | 0,3 | 0 | 0 | 0 | 0 | 0 | 0,3 | 1,6 | 8,4 |
| UV Index | 3 | 4 | 6 | 4 | 7 | 6 | 7 | 7 | 6 | 4 | 4 | 2 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Chelmsford, Massachusetts. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Chelmsford
Yearly Temperature in Chelmsford
Precipitation charts
These charts show the average amount of precipitation in Chelmsford, Massachusetts. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Chelmsford
Total Yearly Precipitation in Chelmsford
Average Snowfall per Month in Chelmsford
Total Yearly Snowfall in Chelmsford
UV index chart
This chart shows the average UV index per month in Chelmsford, Massachusetts. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Chelmsford
Weather experiences in Chelmsford
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Average weather in Chelmsford by month
Click on a month below to see detailed weather info for Chelmsford. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.