See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
17°
Clear
Feels Like: 19°
Min: 10°
Max: 19°
The next few hours will be clear, with today reaching 19°C and dropping to 10°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:14
Sunrise
19:31
Sunset
Moon
Waxing Crescent
12:22
Moonrise
20:52
Moonset
Daily Forecast
Today
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Air Quality Data Available
Upgrade to access real-time air quality data for Watertown.
Resources
UV Index
Humidity
Weather in Watertown today, September 15, 2026
Watertown is set for a fine, sunny day on September 15, 2026, with only limited interruptions to the clear sky. The early hours look particularly favourable for being outside.
The temperature range runs from about 10°C up to 19°C. Relative humidity sits between 52% and 78%, reaching its peak around 23:00. Expect gentle winds, highest near 13:00 at 4.7 km/h.
Afternoon conditions open up, holding cloud close to 10% near 14:00. The day finishes on a milder, brighter note. Views remain open at about 16.1 km. The sun rises at 07:14 and sets at 19:31, for a total of 12 hours 17 minutes of sunlight today.
The practical takeaway for Watertown is a bright September 15, 2026, ideal for outdoor errands before temperatures ease from about 19°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 28°C. The average temperature during this period is around 22°C.
How cold does it get in Watertown?
The coldest month in Watertown is January, with average low temperatures of -13°C. The average temperature during this period is around -9°C.
What is the wettest time of year in Watertown?
The wettest month in Watertown is August, with an average of 110mm of precipitation.
What is the driest time of year in Watertown?
The driest month in Watertown is February, with an average of 17mm of precipitation.
Explore more weather forecasts
- Brookings, South Dakota
- New York City, New York
- Huron, South Dakota
- Los Angeles, California
- Aberdeen, South Dakota
- Brooklyn, New York
- Mitchell, South Dakota
- Chicago, Illinois
- Sioux Falls, South Dakota
- Houston, Texas
- Yankton, South Dakota
- Queens, New York
- Vermillion, South Dakota
- Phoenix, Arizona
- Pierre, South Dakota
- Philadelphia, Pennsylvania
