Weather in September 2025

Watertown weather in September 2025

The temperatures in Watertown in September are comfortable with low of 15°C and and high up to 23°C.

You can expect about 3 to 8 days of rain in Watertown during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Watertown in September 2025.

If you’re planning to visit Watertown in the near future, we highly recommend that you review the 14 day weather forecast for Watertown before you arrive.

Temperatures
Temperatures
23° / 15°
Rainy Days
Rainy Days
3
Snowy Days
Snowy Days
0
Dry Days
Dry Days
27
Rainfall
Rainfall
39
mm
10.0
Sun Hours
10.0
Hrs

Watertown annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January 1° / -5° 5 18 8 51 mm
Awful
February 2° / -5° 4 15 9 56 mm
Awful
March 7° / -1° 6 19 6 61 mm
Bad
April 13° / 5° 6 24 1 55 mm
Ok
May 19° / 10° 4 27 0 47 mm
Good
June 24° / 14° 5 25 0 56 mm
Perfect
July 28° / 18° 5 26 0 62 mm
Perfect
August 28° / 18° 4 27 0 58 mm
Perfect
September 23° / 15° 3 27 0 39 mm
Perfect
October 17° / 9° 5 26 0 59 mm
Good
November 10° / 3° 4 25 1 44 mm
Ok
December 5° / -1° 5 20 6 55 mm
Awful
Temperatures in Watertown in September
Rain in Watertown in September

Recommended Hotels in Watertown

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Weather in Watertown in September - FAQ

What is the average temperature in Watertown in September?
The average temperature in Watertown in September is 15/23° C.
What is the chance of rain in Watertown in September?
On average, there are 3 rainy days in Watertown during September.
Weather wise, is September a good time to visit Watertown?
The weather in Watertown in September is perfect.
Can it snow in Watertown in September?
On average, there are 0 snowy days in Watertown in September.
More about the weather in Watertown