Watertown, MA Weather & Growing Conditions
Overnight
53°F
Partly Cloudy
Partly cloudy, with a low around 53. Southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Partly Cloudy | 6 mph SW | 2% |
| Wednesday | 77°F | Sunny | 6 to 10 mph SW | 3% |
| Wednesday Night | 58°F | Mostly Clear | 8 mph SW | 2% |
| Thursday | 75°F | Mostly Cloudy | 7 to 12 mph SW | 7% |
| Thursday Night | 62°F | Mostly Cloudy then Chance Light Rain | 6 to 9 mph SW | 42% |
| Friday | 71°F | Light Rain | 6 mph S | 91% |
| Friday Night | 57°F | Light Rain | 3 mph S | 96% |
| Saturday | 65°F | Light Rain Likely | 7 mph N | 66% |
| Saturday Night | 46°F | Chance Light Rain | 7 mph NW | 25% |
| Sunday | 59°F | Slight Chance Light Rain then Mostly Sunny | 9 mph W | 22% |
| Sunday Night | 39°F | Partly Cloudy | 6 mph W | 6% |
| Monday | 56°F | Mostly Sunny then Slight Chance Light Rain | 7 to 12 mph W | 17% |
| Monday Night | 37°F | Slight Chance Light Rain then Partly Cloudy | 8 mph W | 15% |
| Tuesday | 59°F | Mostly Sunny | 8 to 12 mph SW | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Watertown, MA
Last spring frost
Apr 19
First fall frost
Oct 23
Growing season
185 days
Hardiness zone
6b
Explore more for Watertown, MA: full frost dates · planting calendar · Massachusetts frost dates
Climate data from the nearest NOAA station, Jamaica Plain, Ma (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.