Worcester, MA Climate & Monthly Averages
Worcester has a humid subtropical climate. July is the hottest month, averaging 82° by day; January is the coldest at 35°.
Worcester's climate is a story of contrasts
The Worcester year is defined by how long its winter lasts: 4 months average sub-freezing nights, bottoming out in January at 21°F (-6°C). Summer is the short exception, with July reaching 82°F (28°C).
July
82° by day 65° at nightJanuary
35° by day 21° at nightThe two ends of the year
December is the wettest month at 5.0 inches (126 mm) over 11 days; November is the driest. July is the warm end of the year, averaging 82°F (28°C) by day and 65°F (18°C) overnight. January is the coolest month, with highs of 35°F (2°C) and lows near 21°F (-6°C). Between the average July and the average January lie 25°C, a wider spread than roughly 85% of the cities we track.
Three of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is August through September. Overnight lows average at or below freezing for 4 months, December through March. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 97°F (36°C) and the lowest daily minimum -17°F (-27°C).
More climate facts for Worcester
- Hottest month: July - highs near 82°F (28°C)
- Coldest month: January - highs near 35°F (2°C)
- Decade extremes (2015-2024): 97°F (36°C) high · -17°F (-27°C) low
- Wettest month: December (11 rainy days) · Sunniest: July (11.3 h sun/day)
- Climate type: humid subtropical
- Annual swing: 25°C between the average warmest and coolest month · day to night: 9°C
- Snow: about 20 days a year
- Months with freezing average lows: 4
- Average humidity: 71%
Four distinct parts of the year in Worcester
Spring (March through May)
Spring is crisp but comfortable here - highs near 56°F (13°C), nights near 38°F (3°C), and rain falls on around 35 of the 90 days, plus about 5 snowy days.
Summer (June through August)
Summer in Worcester is pleasantly warm, with daytime highs averaging 80°F (27°C) and nights around 62°F (17°C); rain falls on around 37 of the 90 days. Daylight is generous - around 11.1 hours of sun a day.
Fall (September through November)
Fall in Worcester runs cool rather than cold, with daytime highs averaging 61°F (16°C) and nights around 46°F (8°C); expect showers on roughly 29 days across the season.
Winter (December through February)
Winter runs to hard cold here - highs near 38°F (3°C), nights near 23°F (-5°C), and rain falls on around 31 of the 90 days, plus about 14 snowy days. Wind sharpens cold like this considerably; pair the forecast winds with the wind speed converter to judge exposed conditions.
Worcester temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.
Choosing a season in Worcester
Best time to visit Worcester
The best time to visit Worcester is generally August to October and May, when these are the warmest and brightest weeks of the year. Daytime temperatures in that window sit near 71°F (22°C), with rain on about 11 days a month. For the same question asked the other way round, see where else is warm in August.
What to pack
Pack for Worcester with light clothing for the warm months, a heavy insulated coat, hat and gloves for winter and a compact umbrella or rain shell. Note the gap between afternoon and night: July pairs 82°F (28°C) with 65°F (18°C).
Monthly highs, lows and seasonal change
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 35° | 21° | 10 | 4.1 in | 6.0 h/day | 9.4 h | 32% | 68% |
| February | 38° | 21° | 10 | 3.4 in | 6.9 h/day | 10.5 h | 35% | 69% |
| March | 44° | 27° | 12 | 4.2 in | 8.1 h/day | 11.8 h | 38% | 66% |
| April | 55° | 37° | 12 | 4.3 in | 8.3 h/day | 13.3 h | 42% | 68% |
| May | 68° | 49° | 11 | 3.4 in | 9.9 h/day | 14.6 h | 36% | 68% |
| June | 77° | 58° | 12 | 3.8 in | 11.1 h/day | 15.3 h | 42% | 69% |
| July | 82° | 65° | 13 | 4.8 in | 11.3 h/day | 15.0 h | 42% | 72% |
| August | 81° | 64° | 11 | 3.5 in | 10.8 h/day | 13.9 h | 36% | 73% |
| September | 73° | 57° | 10 | 4.5 in | 8.8 h/day | 12.4 h | 32% | 76% |
| October | 61° | 47° | 10 | 4.6 in | 7.5 h/day | 11.0 h | 33% | 76% |
| November | 49° | 35° | 9 | 3.3 in | 6.6 h/day | 9.7 h | 29% | 72% |
| December | 40° | 27° | 11 | 5.0 in | 5.6 h/day | 9.1 h | 36% | 73% |
Worcester from the coldest month to the hottest
Each card shows the average high and low. The bar places that month between Worcester's coldest night and warmest afternoon.
January
- Rain
- 10 days
- Sunshine
- 6.0 h
- Daylight
- 9.4 h
- Snow
- 5 days
February
- Rain
- 10 days
- Sunshine
- 6.9 h
- Daylight
- 10.5 h
- Snow
- 5 days
March
- Rain
- 12 days
- Sunshine
- 8.1 h
- Daylight
- 11.8 h
- Snow
- 4 days
April
- Rain
- 12 days
- Sunshine
- 8.3 h
- Daylight
- 13.3 h
- Snow
- 1 day
May
- Rain
- 11 days
- Sunshine
- 9.9 h
- Daylight
- 14.6 h
June
- Rain
- 12 days
- Sunshine
- 11.1 h
- Daylight
- 15.3 h
July
- Rain
- 13 days
- Sunshine
- 11.3 h
- Daylight
- 15.0 h
August
- Rain
- 11 days
- Sunshine
- 10.8 h
- Daylight
- 13.9 h
September
- Rain
- 10 days
- Sunshine
- 8.8 h
- Daylight
- 12.4 h
October
- Rain
- 10 days
- Sunshine
- 7.5 h
- Daylight
- 11.0 h
November
- Rain
- 9 days
- Sunshine
- 6.6 h
- Daylight
- 9.7 h
December
- Rain
- 11 days
- Sunshine
- 5.6 h
- Daylight
- 9.1 h
- Snow
- 4 days
Looking for warmer alternatives? Browse warm places by month, or compare Worcester's coolest part of the year: January, February, December.
Where Worcester sits among other climates
- 26% of the year's precipitation falls in its wettest three months - more evenly spread than almost every other city we track.
- Worcester averages 50°F (10°C) across the year - cooler than all but 10% of the 3496 cities we track.
These comparisons use the same ten-year window for every city in the dataset.