Live Weather & Forecast
Weather in Watertown
Massachusetts, United States · Real-time conditions & 3-day outlook
12°C
Feels like 11°C
54°F / Feels 51°F
Sunny
Watertown, Massachusetts
🌞 Daytime
Updated: 2026-04-12 17:30
Humidity
31%
Wind
14 km/h SSE
Wind Gust
16.4 km/h
Pressure
1029 mb
Visibility
16 km
UV Index
1.2
(Low)
Precipitation
0 mm
Cloud Cover
0%
Dew Point
-5°C
Wind Degree
168°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
231.9 μg/m³
NO₂
15.3 μg/m³
O₃
89 μg/m³
SO₂
3.4 μg/m³
PM 2.5
8.6 μg/m³
PM 10
9.3 μg/m³
Today's Hourly Forecast
24-hour breakdown for Watertown, Massachusetts
12 AM
6°
Clear
1 AM
4°
Clear
2 AM
3°
Clear
3 AM
2°
Clear
4 AM
1°
Clear
5 AM
1°
Clear
6 AM
1°
Clear
7 AM
4°
Sunny
8 AM
6°
Sunny
9 AM
8°
Sunny
10 AM
11°
Sunny
11 AM
13°
Sunny
12 PM
15°
Sunny
1 PM
14°
Sunny
2 PM
14°
Sunny
3 PM
15°
Sunny
4 PM
13°
Sunny
5 PM
12°
Sunny
6 PM
13°
Sunny
7 PM
11°
Sunny
8 PM
10°
Clear
9 PM
9°
Clear
10 PM
9°
Clear
11 PM
8°
Clear
3-Day Forecast
Daily overview for Watertown, Massachusetts
Today
Sunny
16°
/
0°
🌧️ 0% chance of rain
💧 Avg. humidity: 36%
💨 Max wind: 17.3 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:09 AM
🌇 Sunset: 07:23 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Patchy rain nearby
16°
/
7°
🌧️ 75% chance of rain
💧 Avg. humidity: 81%
💨 Max wind: 26.3 km/h
🌧️ Total precip: 0.28 mm
☀️ UV Index: 1
🌅 Sunrise: 06:07 AM
🌇 Sunset: 07:25 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Sunny
25°
/
16°
🌧️ 0% chance of rain
💧 Avg. humidity: 72%
💨 Max wind: 20.5 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.8
🌅 Sunrise: 06:05 AM
🌇 Sunset: 07:26 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Best Time to Visit Watertown
Plan your trip to Watertown, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Watertown?
Current conditions in Watertown: Sunny, temperature 12°C, humidity 31%.
What is the best time to visit Watertown?
The best time to visit Watertown is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Watertown?
Watertown is located at approximately 42.4° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Watertown?
The wettest period in Watertown is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Watertown?
For visits to Watertown during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Watertown in?
Watertown is located in United States, in the state of Massachusetts.
What are the public holidays in Watertown in 2026?
View the 2026 public holidays for Watertown on our Holidays page.
What are the GPS coordinates used for the weather forecast in Watertown?
The weather forecast for Watertown uses coordinates 42.3653, -71.1843.