Duxbury climate — normals and trends
Duxbury (United States) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.2 °C and it receives 1,149 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (21.4 °C on average) and the coldest is January (-0.7 °C). Rainfall peaks in December.
Duxbury averages 79 frost days, 3 hot days (≥ 30 °C) and 120 rainy days per year.
Duxbury has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 88 to 70 per year over the period.
The hottest day of the period reached 36.0 °C (on 24 June 2025) and the coldest -21.2 °C (on 14 February 2016).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
DuxburyMassachusetts
- coords
- 42.04°, -70.67°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.2°C
Average daily high
13.3°C
Average daily low
7.2°C
Annual rainfall
1,149mm
Sunshine / day
8.8h
Mean relative humidity
73%
Average peak wind
23.4km/h
Seasonal range
22.1°C
Frost days (< 0 °C)
79 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
120 d/yr
Annual snowfall
84.5 cm
Average feels-like high
11.3 °C
Average feels-like low
3.8 °C
Average peak gust
41.9 km/h
Tropical nights (≥ 20 °C)
19 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.37 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
36.0 °C
24 June 2025
Coldest day
-21.2 °C
14 February 2016
Wettest day
134 mm
7 October 1962
Windiest day
80.6 km/h
31 August 1954
Strongest gust
154.4 km/h
31 August 1954
Hottest feels-like
40.9 °C
24 June 2025
Coldest feels-like
-30.2 °C
4 February 2023
Snowiest day
37.0 cm
27 January 2015
Sunniest day
14.8 h
16 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 1.7 °C | -0.7 °C | 56 mm | -49 mm |
| Feb | 3.2 °C | +0.2 °C | 93 mm | -2 mm |
| Mar | 8.4 °C | +2.3 °C | 115 mm | +4 mm |
| Apr | 12.7 °C | +1.8 °C | 113 mm | +9 mm |
| May | 16.6 °C | +0.5 °C | 125 mm | +34 mm |
| Jun | 22.7 °C | +1.5 °C | 46 mm | -36 mm |
| Jul | 25.9 °C | +1.3 °C | 89 mm | +16 mm |
| Aug | 23.6 °C | -0.4 °C | 34 mm | -49 mm |
| Sep | 21.3 °C | +0.7 °C | 61 mm | -26 mm |
| Oct | 16.1 °C | +0.5 °C | 127 mm | +27 mm |
| Nov | 10.1 °C | -0.2 °C | 63 mm | -45 mm |
| Dec | 3.7 °C | -1.4 °C | 99 mm | -13 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Duxbury?
Duxbury has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 10.2 °C and it receives 1,149 mm of precipitation per year.
What is the hottest day ever recorded in Duxbury?
The hottest day measured in Duxbury between 1940 and 2025 was 24 June 2025, reaching 36.0 °C.
What is the coldest day in Duxbury?
The coldest day measured in Duxbury between 1940 and 2025 was 14 February 2016, at -21.2 °C.
Does it snow in Duxbury?
Yes. Duxbury gets on average 84.5 cm of snow per year and has around 79 frost days.
Has the climate of Duxbury warmed?
Yes: Duxbury warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Duxbury?
The wettest day measured in Duxbury between 1940 and 2025 was 7 October 1962, with 134 mm of rain in 24 hours.
What was the windiest day in Duxbury?
The windiest day measured in Duxbury between 1940 and 2025 was 31 August 1954, with winds reaching 80.6 km/h.
What is the warmest month in Duxbury?
The warmest month in Duxbury is July (21.4 °C on average); the coldest is January (-0.7 °C).
How much does it rain in Duxbury?
Duxbury receives on average 1,149 mm of precipitation per year, spread over about 120 rainy days.
Is it sunny in Duxbury?
Duxbury gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Duxbury?
The heaviest 24-hour snowfall measured in Duxbury between 1940 and 2025 was 27 January 2015, with 37.0 cm.
Are there tropical nights in Duxbury?
Yes: Duxbury has on average 19 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Duxbury?
In Duxbury, between 1940 and 2025, the highest apparent temperature reached 40.9 °C on 24 June 2025, and the lowest was -30.2 °C on 4 February 2023.
Compare Duxbury with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Duxbury