Holyoke climate — normals and trends
Holyoke (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 1,075 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 (22.5 °C on average) and the coldest is January (-3.6 °C). Rainfall peaks in December.
Holyoke averages 117 frost days, 19 hot days (≥ 30 °C) and 119 rainy days per year.
Holyoke has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 128 to 106 per year over the period.
The hottest day of the period reached 38.0 °C (on 22 July 2011) and the coldest -27.2 °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
HolyokeMassachusetts
- coords
- 42.20°, -72.62°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.6°C
Average daily high
14.5°C
Average daily low
4.9°C
Annual rainfall
1,075mm
Sunshine / day
8.7h
Mean relative humidity
69%
Average peak wind
15.4km/h
Seasonal range
26.1°C
Frost days (< 0 °C)
117 d/yr
Hot days (≥ 30 °C)
19 d/yr
Rainy days (≥ 1 mm)
119 d/yr
Annual snowfall
112.7 cm
Average feels-like high
12.6 °C
Average feels-like low
2.3 °C
Average peak gust
37.1 km/h
Tropical nights (≥ 20 °C)
15 d/yr
Solar radiation
14.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
38.0 °C
22 July 2011
Coldest day
-27.2 °C
13 February 1967
Wettest day
218 mm
19 August 1955
Windiest day
47.7 km/h
25 November 1950
Strongest gust
136.8 km/h
25 November 1950
Hottest feels-like
42.4 °C
1 July 2018
Coldest feels-like
-32.9 °C
21 December 1942
Snowiest day
31.4 cm
14 March 2017
Sunniest day
14.7 h
9 June 1957
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 | 0.4 °C | -0.3 °C | 43 mm | -42 mm |
| Feb | 1.7 °C | -0.5 °C | 82 mm | +1 mm |
| Mar | 10.5 °C | +3.5 °C | 93 mm | -4 mm |
| Apr | 15.6 °C | +1.9 °C | 100 mm | +5 mm |
| May | 19.5 °C | -0.3 °C | 213 mm | +121 mm |
| Jun | 25.7 °C | +1.0 °C | 63 mm | -22 mm |
| Jul | 29.4 °C | +1.8 °C | 92 mm | +9 mm |
| Aug | 26.8 °C | +0.3 °C | 29 mm | -59 mm |
| Sep | 24.3 °C | +2.0 °C | 74 mm | -12 mm |
| Oct | 16.8 °C | +0.6 °C | 104 mm | +12 mm |
| Nov | 9.1 °C | -0.5 °C | 64 mm | -29 mm |
| Dec | 1.8 °C | -1.4 °C | 85 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 Holyoke?
Holyoke has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.6 °C and it receives 1,075 mm of precipitation per year.
What is the hottest day ever recorded in Holyoke?
The hottest day measured in Holyoke between 1940 and 2025 was 22 July 2011, reaching 38.0 °C.
What is the coldest day in Holyoke?
The coldest day measured in Holyoke between 1940 and 2025 was 13 February 1967, at -27.2 °C.
Does it snow in Holyoke?
Yes. Holyoke gets on average 112.7 cm of snow per year and has around 117 frost days.
Has the climate of Holyoke warmed?
Yes: Holyoke warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Holyoke?
The wettest day measured in Holyoke between 1940 and 2025 was 19 August 1955, with 218 mm of rain in 24 hours.
What was the windiest day in Holyoke?
The windiest day measured in Holyoke between 1940 and 2025 was 25 November 1950, with winds reaching 47.7 km/h.
What is the warmest month in Holyoke?
The warmest month in Holyoke is July (22.5 °C on average); the coldest is January (-3.6 °C).
How much does it rain in Holyoke?
Holyoke receives on average 1,075 mm of precipitation per year, spread over about 119 rainy days.
Is it sunny in Holyoke?
Holyoke 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 Holyoke?
The heaviest 24-hour snowfall measured in Holyoke between 1940 and 2025 was 14 March 2017, with 31.4 cm.
Are there tropical nights in Holyoke?
Yes: Holyoke has on average 15 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Holyoke?
In Holyoke, between 1940 and 2025, the highest apparent temperature reached 42.4 °C on 1 July 2018, and the lowest was -32.9 °C on 21 December 1942.
Compare Holyoke with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Holyoke