Haverhill climate — normals and trends
Haverhill (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.6 °C and it receives 1,065 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 (22.2 °C on average) and the coldest is January (-3.1 °C). Rainfall peaks in December.
Haverhill averages 103 frost days, 9 hot days (≥ 30 °C) and 119 rainy days per year.
Haverhill has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 111 to 95 per year over the period.
The hottest day of the period reached 37.0 °C (on 22 July 2011) and the coldest -25.8 °C (on 13 February 1967).
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
HaverhillMassachusetts
- coords
- 42.78°, -71.08°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.6°C
Average daily high
13.5°C
Average daily low
5.8°C
Annual rainfall
1,065mm
Sunshine / day
8.7h
Mean relative humidity
71%
Average peak wind
18.1km/h
Seasonal range
25.3°C
Frost days (< 0 °C)
103 d/yr
Hot days (≥ 30 °C)
9 d/yr
Rainy days (≥ 1 mm)
119 d/yr
Annual snowfall
113.6 cm
Average feels-like high
11.7 °C
Average feels-like low
2.9 °C
Average peak gust
39.4 km/h
Tropical nights (≥ 20 °C)
19 d/yr
Solar radiation
14.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.40 · 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
37.0 °C
22 July 2011
Coldest day
-25.8 °C
13 February 1967
Wettest day
123 mm
19 August 1955
Windiest day
58.3 km/h
31 August 1954
Strongest gust
141.8 km/h
31 August 1954
Hottest feels-like
41.8 °C
27 August 1948
Coldest feels-like
-32.0 °C
20 December 1942
Snowiest day
33.7 cm
2 January 1987
Sunniest day
14.8 h
21 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 0.3 °C | -0.4 °C | 45 mm | -43 mm |
| Feb | 1.3 °C | -0.6 °C | 87 mm | +5 mm |
| Mar | 8.8 °C | +2.9 °C | 102 mm | +3 mm |
| Apr | 13.7 °C | +1.8 °C | 114 mm | +18 mm |
| May | 17.7 °C | 0.0 °C | 172 mm | +86 mm |
| Jun | 24.0 °C | +1.1 °C | 47 mm | -35 mm |
| Jul | 27.5 °C | +1.3 °C | 72 mm | -9 mm |
| Aug | 24.8 °C | -0.5 °C | 37 mm | -47 mm |
| Sep | 22.3 °C | +1.0 °C | 62 mm | -18 mm |
| Oct | 16.5 °C | +0.9 °C | 109 mm | +20 mm |
| Nov | 9.0 °C | -0.5 °C | 67 mm | -31 mm |
| Dec | 1.7 °C | -1.6 °C | 83 mm | -17 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 Haverhill?
Haverhill has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.6 °C and it receives 1,065 mm of precipitation per year.
What is the hottest day ever recorded in Haverhill?
The hottest day measured in Haverhill between 1940 and 2025 was 22 July 2011, reaching 37.0 °C.
What is the coldest day in Haverhill?
The coldest day measured in Haverhill between 1940 and 2025 was 13 February 1967, at -25.8 °C.
Does it snow in Haverhill?
Yes. Haverhill gets on average 113.6 cm of snow per year and has around 103 frost days.
Has the climate of Haverhill warmed?
Yes: Haverhill warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Haverhill?
The wettest day measured in Haverhill between 1940 and 2025 was 19 August 1955, with 123 mm of rain in 24 hours.
What was the windiest day in Haverhill?
The windiest day measured in Haverhill between 1940 and 2025 was 31 August 1954, with winds reaching 58.3 km/h.
What is the warmest month in Haverhill?
The warmest month in Haverhill is July (22.2 °C on average); the coldest is January (-3.1 °C).
How much does it rain in Haverhill?
Haverhill receives on average 1,065 mm of precipitation per year, spread over about 119 rainy days.
Is it sunny in Haverhill?
Haverhill gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Haverhill?
The heaviest 24-hour snowfall measured in Haverhill between 1940 and 2025 was 2 January 1987, with 33.7 cm.
Are there tropical nights in Haverhill?
Yes: Haverhill has on average 19 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Haverhill?
In Haverhill, between 1940 and 2025, the highest apparent temperature reached 41.8 °C on 27 August 1948, and the lowest was -32.0 °C on 20 December 1942.
Compare Haverhill with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Haverhill