0 to 27°C
temperature
2706 hours
sunshine per day
148 mm
rain
250 days
dry
96 days
rain
19 days
snow

Climate of Waltham

Waltham has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Waltham is 14° degrees and there is about 149 mm of rain in a year. It is dry for 232 days a year with an average humidity of 76% and an UV-index of 4.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 0°C and 27°C
  • Night:the average nighttime temperature is between -6°C and 17°C
  • Rain: it rains 96 days and there is a total of approximately 148 mm rainfall
  • Snow: it snows an average of 19 days per year
  • Sun hours: throughout the year there are 2706 sun hours
Maximum temperature: between 0°C and 27°C
Warmest month: 27°C in July
Coldest month: 0°C in January
Night temperature: between -6°C and 17°C
Dry days: 250 days
Days with rain: 96 days
Days with snow: 19 days
Total rain sum: 148 mm
Hours of sunshine: 2706 hours

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Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Waltham.

Precipitation graph

This graph shows the average amount of rainfall per month for Waltham.

Climate table of Waltham

In this climate table you can see at a glance what the average weather per month is for Waltham. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Waltham might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 0 2 6 13 20 23 27 27 23 16 10 4
Night temp. (°C) -6 -6 -1 4 10 13 17 17 14 8 3 -2
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 13 12 14 10 9 13 12 13 8 14 19 11
Days with rain 5 5 8 10 9 11 11 9 8 8 6 6
Days with snow 4 6 5 1 - - - - - - - 3
Dry days 22 17 18 19 22 19 20 22 22 23 24 22
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 5 5 6 9 9 9 11 11 9 6 5 5
Wind force (Bft) 3 3 3 3 2 2 2 2 2 3 3 3
UV-index 2 2 2 3 5 6 6 6 4 3 2 2

Best time to visit Waltham

The best time to visit Waltham in the state of Massachusetts is from May through September. In this period you have a warm temperature and almost no precipitation. The highest average temperature in Waltham is 27°C in July and the lowest is 0°C in January.

Climate of Waltham by month

What is the average climate in a given month for Waltham? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Waltham weather experiences

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