United StatesThe weather in May in Chelmsford
It's pleasantly warm in May in Chelmsford with an average temperature of 21°C. Temperatures this month range from a low of 15°C to a high of 26°C. At night, you can expect temperatures between 5°C and 15°C.
Looking for sun? May isn’t a good month to be in Chelmsford. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for Chelmsford, Massachusetts. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 35°C in 2022, Chelmsford reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 6°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of 0°C to a highest value of 22°C.
Rainfall amount
In May, there is an average of 117 mm of precipitation, spread over 14 days. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in May for Chelmsford
Click on any day in May to get detailed info about the usual weather on that day in Chelmsford. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| Chelmsford | New York | |
|---|---|---|
| Average temperature | 21°C | 22°C |
| Max. temperature | 26°C | 28°C |
| Min. temperature | 5°C | -5°C |
| Total precipitation | 117 mm | 105 mm |
| Rainy days | 14 days | 14 days |
Start of May
The month of May starts in Chelmsford with mild temps, averaging around 18°C during the day and nights around 8°C.
Mid May
By mid-May, daytime temps rise to around 23°C, with nights around 11°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of May
By the end of May, the average daytime temperature in Chelmsford is around 23°C, while nighttime temps are about 12°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Chelmsford for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in May in Chelmsford, Massachusetts. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in Chelmsford
Temperature in May in Chelmsford over the years
Precipitation charts
These charts show the average amount of precipitation in May 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.
Daily Precipitation in May in Chelmsford
Total precipitation in May in Chelmsford over the years
Daily UV index in May in Chelmsford
This chart shows the average daily UV index in May in Chelmsford, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in May 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.