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Hourly Forecast
Daylight Hours
06:31
Sunrise
18:47
Sunset
Moon
Waxing Crescent
11:25
Moonrise
20:14
Moonset
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Weather in Watertown today, September 15, 2026
Watertown starts September 15, 2026 under largely sunny skies, with bright spells setting the tone from the outset. Outdoor plans should enjoy long stretches of open sky as the day unfolds. Expect a brighter morning, with limited cloud around 4% by 09:00. Conditions start on a settled note.
The day peaks near 20°C and cools toward 9°C. The air stays humid, with relative humidity between 50% and 93% and the peak around 23:00. Winds stay light, near 3.0 km/h by 18:00, so the day feels still more than breezy.
Expect persistent cloud later on, with amounts around 100% by 16:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 16.0 km on average, though it can drop toward 14.5 km in thicker cloud or showers. Expect sunrise at 06:31, sunset at 18:47, and 12 hours 16 minutes of sunlight today overall.
In short, September 15, 2026 looks like a fine day in Watertown for being outside, peaking around 20°C.
Frequently asked questions about weather in Watertown
How warm does it get in Watertown?
The warmest month in Watertown is July, with average high temperatures of 29°C. The average temperature during this period is around 24°C.
How cold does it get in Watertown?
The coldest month in Watertown is January, with average low temperatures of -4°C. The average temperature during this period is around 0°C.
What is the wettest time of year in Watertown?
The wettest month in Watertown is December, with an average of 115mm of precipitation.
What is the driest time of year in Watertown?
The driest month in Watertown is June, with an average of 77mm of precipitation.
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