Petersham, MA Weather & Growing Conditions
This Afternoon
74°F
Sunny
Sunny, with a high near 74. Southwest wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Sunny | 9 mph SW | 1% |
| Tonight | 55°F | Partly Cloudy | 9 mph S | 1% |
| Thursday | 66°F | Light Rain Likely | 9 to 13 mph S | 59% |
| Thursday Night | 59°F | Chance Light Rain | 3 to 12 mph S | 50% |
| Friday | 67°F | Chance Light Rain | 3 mph SW | 46% |
| Friday Night | 51°F | Chance Light Rain | 3 mph NW | 43% |
| Saturday | 61°F | Chance Light Rain | 6 mph N | 41% |
| Saturday Night | 43°F | Chance Light Rain | 6 to 10 mph NW | 44% |
| Sunday | 54°F | Chance Light Rain | 10 to 14 mph NW | 36% |
| Sunday Night | 38°F | Partly Cloudy | 9 mph W | 8% |
| Monday | 52°F | Mostly Sunny | 9 to 17 mph W | 12% |
| Monday Night | 35°F | Partly Cloudy | 7 to 10 mph W | 6% |
| Tuesday | 56°F | Sunny | 8 to 14 mph W | 3% |
| Tuesday Night | 35°F | Mostly Clear | 6 to 9 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Petersham, MA
Last spring frost
May 4
First fall frost
Oct 8
Growing season
157 days
Hardiness zone
5b
Explore more for Petersham, MA: full frost dates · planting calendar · Massachusetts frost dates
Climate data from the nearest NOAA station, Orange Muni Ap, Ma (7.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.