Best year time to visit City of Waltham

General weather information about City of Waltham

Average annual temperature is 11.2 °C

Absolute maximum temperature: 34.1 °C

Absolute minimum temperature: -24.5 °C

Number of sunny days: 161 days

Number of rainy days: 195 days

Number of snow days: 9 days

* Weather data for City of Waltham United States is based on climate observations for 2026 year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	13.0	15.3	16.1	29.8	30.2	32.5	33.2	29.4	34.1	27.7	18.7	16.1
Average daytime temperature (°C)	6.1	6.1	8.3	15.8	21.2	23.8	28.7	25.9	23.1	19.0	9.3	8.0
Average temperature (°C)	2.3	0.7	3.4	9.8	14.6	18.1	23.5	20.9	18.6	13.8	4.3	3.6
Average night temperature (°C)	-1.0	-4.1	-0.9	5.3	8.7	13.6	19.3	16.9	15.0	9.9	0.5	0.4
Absolute minimum temperature (°C)	-6.5	-24.5	-5.2	-3.6	2.2	7.2	14.1	12.6	7.7	2.3	-5.1	-6.7

The best time to visit City of Waltham during the most sunny months:

The largest precipitation sum in City of Waltham is at

January — 161(mm)

July — 189(mm)

August — 183(mm)

September — 216(mm)

December — 173(mm)

When is the best time to visit City of Waltham?

The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit City of Waltham.

What is the weather like in City of Waltham?

See average temperature, rainfall and daylight hours for City of Waltham by month in the table above.

How many sunny days does City of Waltham have?

The monthly weather statistics above show sunshine and rainfall patterns for City of Waltham throughout the year.