Clay climate — normals and trends
Clay (United States) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.9 °C and it receives 1,216 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 (21.7 °C on average) and the coldest is January (-4.0 °C). Rainfall peaks in November.
Clay averages 111 frost days, 7 hot days (≥ 30 °C) and 167 rainy days per year.
Clay has warmed by +1.6 °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 121 to 101 per year over the period.
The hottest day of the period reached 34.4 °C (on 21 July 2011) and the coldest -27.7 °C (on 15 January 1957).
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
ClayNew York
- coords
- 43.19°, -76.17°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.9°C
Average daily high
12.8°C
Average daily low
5.2°C
Annual rainfall
1,216mm
Sunshine / day
8.3h
Mean relative humidity
75%
Average peak wind
17.0km/h
Seasonal range
25.7°C
Frost days (< 0 °C)
111 d/yr
Hot days (≥ 30 °C)
7 d/yr
Rainy days (≥ 1 mm)
167 d/yr
Annual snowfall
151.4 cm
Average feels-like high
11.1 °C
Average feels-like low
2.4 °C
Average peak gust
37.9 km/h
Tropical nights (≥ 20 °C)
16 d/yr
Solar radiation
13.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.32 · 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
34.4 °C
21 July 2011
Coldest day
-27.7 °C
15 January 1957
Wettest day
96 mm
27 September 1985
Windiest day
49.5 km/h
25 November 1950
Strongest gust
114.8 km/h
25 November 1950
Hottest feels-like
40.5 °C
3 September 1953
Coldest feels-like
-33.0 °C
15 January 1957
Snowiest day
33.6 cm
30 November 1944
Sunniest day
14.9 h
19 June 2013
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 | -1.5 °C | -0.8 °C | 96 mm | +6 mm |
| Feb | -0.5 °C | -0.4 °C | 111 mm | +32 mm |
| Mar | 8.8 °C | +4.2 °C | 70 mm | -23 mm |
| Apr | 12.4 °C | +0.8 °C | 119 mm | +14 mm |
| May | 17.0 °C | -0.9 °C | 166 mm | +63 mm |
| Jun | 24.0 °C | +1.2 °C | 129 mm | +22 mm |
| Jul | 27.5 °C | +1.7 °C | 63 mm | -43 mm |
| Aug | 25.9 °C | +0.8 °C | 79 mm | -27 mm |
| Sep | 23.1 °C | +1.8 °C | 47 mm | -56 mm |
| Oct | 16.6 °C | +1.4 °C | 118 mm | +10 mm |
| Nov | 7.3 °C | -1.1 °C | 122 mm | +11 mm |
| Dec | 0.9 °C | -1.2 °C | 123 mm | +18 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 Clay?
Clay has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.9 °C and it receives 1,216 mm of precipitation per year.
What is the hottest day ever recorded in Clay?
The hottest day measured in Clay between 1940 and 2025 was 21 July 2011, reaching 34.4 °C.
What is the coldest day in Clay?
The coldest day measured in Clay between 1940 and 2025 was 15 January 1957, at -27.7 °C.
Does it snow in Clay?
Yes. Clay gets on average 151.4 cm of snow per year and has around 111 frost days.
Has the climate of Clay warmed?
Yes: Clay warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Clay?
The wettest day measured in Clay between 1940 and 2025 was 27 September 1985, with 96 mm of rain in 24 hours.
What was the windiest day in Clay?
The windiest day measured in Clay between 1940 and 2025 was 25 November 1950, with winds reaching 49.5 km/h.
What is the warmest month in Clay?
The warmest month in Clay is July (21.7 °C on average); the coldest is January (-4.0 °C).
How much does it rain in Clay?
Clay receives on average 1,216 mm of precipitation per year, spread over about 167 rainy days.
Is it sunny in Clay?
Clay gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.
What is the biggest single-day snowfall in Clay?
The heaviest 24-hour snowfall measured in Clay between 1940 and 2025 was 30 November 1944, with 33.6 cm.
Are there tropical nights in Clay?
Yes: Clay has on average 16 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Clay?
In Clay, between 1940 and 2025, the highest apparent temperature reached 40.5 °C on 3 September 1953, and the lowest was -33.0 °C on 15 January 1957.
Compare Clay with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Clay