Merrick climate — normals and trends
Merrick (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.6 °C and it receives 1,177 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 (23.2 °C on average) and the coldest is January (0.3 °C). Rainfall peaks in March.
Merrick averages 59 frost days, 1 hot days (≥ 30 °C) and 120 rainy days per year.
Merrick has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 69 to 49 per year over the period.
The hottest day of the period reached 32.6 °C (on 6 July 2010) and the coldest -18.6 °C (on 18 February 1979).
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
MerrickNew York
- coords
- 40.66°, -73.55°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.6°C
Average daily high
14.0°C
Average daily low
9.4°C
Annual rainfall
1,177mm
Sunshine / day
9.0h
Mean relative humidity
74%
Average peak wind
23.7km/h
Seasonal range
22.9°C
Frost days (< 0 °C)
59 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
120 d/yr
Annual snowfall
56.5 cm
Average feels-like high
12.4 °C
Average feels-like low
6.3 °C
Average peak gust
38.8 km/h
Tropical nights (≥ 20 °C)
57 d/yr
Solar radiation
15.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.34 · 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
32.6 °C
6 July 2010
Coldest day
-18.6 °C
18 February 1979
Wettest day
147 mm
14 October 2005
Windiest day
77.5 km/h
29 October 2012
Strongest gust
136.1 km/h
25 November 1950
Hottest feels-like
38.3 °C
2 August 1975
Coldest feels-like
-26.6 °C
21 January 1985
Snowiest day
30.7 cm
23 January 2016
Sunniest day
14.2 h
12 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 | 1.9 °C | -1.1 °C | 36 mm | -62 mm |
| Feb | 3.4 °C | 0.0 °C | 94 mm | +3 mm |
| Mar | 9.1 °C | +2.5 °C | 115 mm | +2 mm |
| Apr | 12.9 °C | +1.5 °C | 105 mm | +2 mm |
| May | 17.1 °C | +0.6 °C | 162 mm | +62 mm |
| Jun | 23.1 °C | +1.2 °C | 58 mm | -23 mm |
| Jul | 27.2 °C | +1.9 °C | 97 mm | +9 mm |
| Aug | 24.4 °C | -0.5 °C | 43 mm | -56 mm |
| Sep | 22.5 °C | +0.8 °C | 72 mm | -21 mm |
| Oct | 17.2 °C | +0.7 °C | 165 mm | +67 mm |
| Nov | 11.1 °C | -0.1 °C | 62 mm | -41 mm |
| Dec | 4.5 °C | -1.4 °C | 80 mm | -32 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 Merrick?
Merrick has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 11.6 °C and it receives 1,177 mm of precipitation per year.
What is the hottest day ever recorded in Merrick?
The hottest day measured in Merrick between 1940 and 2025 was 6 July 2010, reaching 32.6 °C.
What is the coldest day in Merrick?
The coldest day measured in Merrick between 1940 and 2025 was 18 February 1979, at -18.6 °C.
Does it snow in Merrick?
Yes. Merrick gets on average 56.5 cm of snow per year and has around 59 frost days.
Has the climate of Merrick warmed?
Yes: Merrick warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Merrick?
The wettest day measured in Merrick between 1940 and 2025 was 14 October 2005, with 147 mm of rain in 24 hours.
What was the windiest day in Merrick?
The windiest day measured in Merrick between 1940 and 2025 was 29 October 2012, with winds reaching 77.5 km/h.
What is the warmest month in Merrick?
The warmest month in Merrick is July (23.2 °C on average); the coldest is January (0.3 °C).
How much does it rain in Merrick?
Merrick receives on average 1,177 mm of precipitation per year, spread over about 120 rainy days.
Is it sunny in Merrick?
Merrick gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Merrick?
The heaviest 24-hour snowfall measured in Merrick between 1940 and 2025 was 23 January 2016, with 30.7 cm.
Are there tropical nights in Merrick?
Yes: Merrick has on average 57 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Merrick?
In Merrick, between 1940 and 2025, the highest apparent temperature reached 38.3 °C on 2 August 1975, and the lowest was -26.6 °C on 21 January 1985.
Compare Merrick with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Merrick