Weather in Quincy, Massachusetts
Roses open along the stoops. Day 59 of spring. Read this microseason across nine climate regions →
- TodayMay 16Overcast—78°46°
- SundayMay 17Light Drizzle19%88°62°
- MondayMay 18Light Drizzle—72°55°
- TuesdayMay 19Heavy Drizzle10%92°59°
- WednesdayMay 20Rain70%91°60°
- ThursdayMay 21Overcast29%63°55°
- FridayMay 22Overcast—68°52°
- PM 2.5
- 10.7 μg/m³
- PM 10
- 13.2 μg/m³
- NO₂
- 9.8 μg/m³
- Ozone
- 98.0 μg/m³
- UV Index
- 0.0 Low
When the dew is on the grass, rain will never come to pass.
- Moonrise
- 9:22 AM
- Moonset
- 12:27 AM
- In sign
- ♊︎ Gemini
Roses open along the stoops
Quincy at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: April 30 (climatological average for this latitude)
- Microseason: 28 of 72, May 16–20
- Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.
Right now in the garden
Cool-season window is open
As of May 17, the cool-season window is open or about to open. Direct-sow peas, lettuce, spinach, radishes, and brassicas now. Hold off on warm-season crops until 1–2 weeks after the last spring frost (around May).
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | — | — |
| May | lettuce, peas, spinach, radishes | lettuce, peas, radishes |
| June | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | tomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | — | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Quincy's warmest month is July (~74°F mean) and its coldest is January (~28°F). Rainfall peaks in December (5.1 inches) and bottoms out in July (3.5 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 28° | 3.9″ | 13 |
| February | 30° | 3.6″ | 12 |
| March | 38° | 4.5″ | 15 |
| April | 49° | 4.3″ | 14 |
| May | 59° | 3.6″ | 12 |
| June | 68° | 4.2″ | 14 |
| July | 74° | 3.5″ | 12 |
| August | 73° | 3.7″ | 12 |
| September | 65° | 4.0″ | 13 |
| October | 53° | 5.0″ | 17 |
| November | 43° | 4.0″ | 13 |
| December | 34° | 5.1″ | 17 |
Regional context
Quincy sits within a warm-summer humid continental climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Boston, MA, Worcester, MA, Springfield, MA, New Bedford, MA, Cambridge, MA.
Frequently asked
- When does it freeze in Quincy?
- Quincy's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in Quincy?
- December is the wettest month with about 5.1 inches of rain on average; the city receives roughly 49 inches annually.
- What is the warmest month in Quincy?
- July is typically warmest, averaging about 74°F.
- What is the coldest month in Quincy?
- January is typically coldest, averaging about 28°F.
- When can I start a vegetable garden in Quincy?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-May); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Quincy get?
- Quincy averages about 164 rainy days per year.
- What hardiness zone is Quincy?
- Quincy's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Quincy, Massachusetts sits in a warm-summer humid continental climate zone. January means hover near 28°F while July averages 74°F — a 46°F seasonal swing.
Across the year, Quincy receives about 49 inches of precipitation spread over roughly 164 rainy days.
The rhythm of the year is set by latitude (42.3°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.