Weather in Waltham in September
The weather in Waltham in September is pleasant during the day and a little cold sometimes, especially at night. Temperatures range from 13 to 24 degrees and there are 13 days of rain on average. Please prepare accordingly with an umbrella and warm clothing.
Avg Temp
13° - 24°
Avg Rainy Days
13
Avg Dry Days
17
Avg Snow Days
0
Weather Facts - Waltham in September
* The warmest temperature recorded in in September is 33°C
* The coldest temperature recorded in Waltham in September is 2°C
* The average rainfall in Waltham in September is 119 mm