Weathermondo.com
United StatesThe weather in May in Bolton
It's pleasantly warm in May in Bolton with an average temperature of 21°C. Temperatures this month range from a low of 14°C to a high of 27°C. At night, you can expect temperatures between 6°C and 14°C.
Looking for sun? May isn’t a good month to be in Bolton. 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 Bolton, 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 34°C in 2016, Bolton reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 5°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of -1°C to a highest value of 22°C.
Rainfall amount
In May, there is an average of 157 mm of precipitation, spread over 15 days. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in May for Bolton
Click on any day in May to get detailed info about the usual weather on that day in Bolton. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| Bolton | New York | |
|---|---|---|
| Average temperature | 21°C | 22°C |
| Max. temperature | 27°C | 28°C |
| Min. temperature | 6°C | -5°C |
| Total precipitation | 157 mm | 105 mm |
| Rainy days | 15 days | 14 days |
Start of May
The month of May starts in Bolton 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 22°C, with nights around 11°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of May
By the end of May, the average daytime temperature in Bolton is around 22°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 Bolton for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in May in Bolton, Massachusetts. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in Bolton
Temperature in May in Bolton over the years
Precipitation charts
These charts show the average amount of precipitation in May in Bolton, 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 Bolton
Total precipitation in May in Bolton over the years
Daily UV index in May in Bolton
This chart shows the average daily UV index in May in Bolton, 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 Bolton
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Average weather in Bolton by month
Click on a month below to see detailed weather info for Bolton. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.