Plattsburgh climate — normals and trends
Plattsburgh (United States) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.1 °C and it receives 1,074 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 (20.9 °C on average) and the coldest is January (-7.9 °C). Rainfall peaks in August.
Plattsburgh averages 137 frost days, 10 hot days (≥ 30 °C) and 141 rainy days per year.
Plattsburgh 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 148 to 126 per year over the period.
The hottest day of the period reached 37.0 °C (on 23 June 2025) and the coldest -34.4 °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
PlattsburghNew York
- coords
- 44.70°, -73.45°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.1°C
Average daily high
11.5°C
Average daily low
2.8°C
Annual rainfall
1,074mm
Sunshine / day
8.3h
Mean relative humidity
74%
Average peak wind
16.0km/h
Seasonal range
28.8°C
Frost days (< 0 °C)
137 d/yr
Hot days (≥ 30 °C)
10 d/yr
Rainy days (≥ 1 mm)
141 d/yr
Annual snowfall
150.8 cm
Average feels-like high
9.5 °C
Average feels-like low
-0.3 °C
Average peak gust
36.6 km/h
Tropical nights (≥ 20 °C)
7 d/yr
Solar radiation
13.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.38 · 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
23 June 2025
Coldest day
-34.4 °C
15 January 1957
Wettest day
121 mm
28 August 2011
Windiest day
41.6 km/h
25 February 1956
Strongest gust
114.5 km/h
16 October 1954
Hottest feels-like
41.6 °C
2 August 1975
Coldest feels-like
-39.7 °C
15 January 1957
Snowiest day
33.3 cm
30 November 1944
Sunniest day
15.3 h
21 June 2018
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 | -3.8 °C | +0.1 °C | 40 mm | -23 mm |
| Feb | -3.2 °C | -0.7 °C | 81 mm | +20 mm |
| Mar | 6.0 °C | +3.2 °C | 93 mm | +18 mm |
| Apr | 12.2 °C | +1.7 °C | 92 mm | +1 mm |
| May | 17.8 °C | -0.4 °C | 123 mm | +25 mm |
| Jun | 25.1 °C | +1.9 °C | 54 mm | -50 mm |
| Jul | 28.4 °C | +2.6 °C | 62 mm | -47 mm |
| Aug | 26.4 °C | +2.0 °C | 41 mm | -71 mm |
| Sep | 22.7 °C | +2.6 °C | 68 mm | -28 mm |
| Oct | 15.5 °C | +2.2 °C | 139 mm | +40 mm |
| Nov | 4.7 °C | -1.5 °C | 104 mm | +15 mm |
| Dec | -1.5 °C | -1.0 °C | 80 mm | +2 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 Plattsburgh?
Plattsburgh has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.1 °C and it receives 1,074 mm of precipitation per year.
What is the hottest day ever recorded in Plattsburgh?
The hottest day measured in Plattsburgh between 1940 and 2025 was 23 June 2025, reaching 37.0 °C.
What is the coldest day in Plattsburgh?
The coldest day measured in Plattsburgh between 1940 and 2025 was 15 January 1957, at -34.4 °C.
Does it snow in Plattsburgh?
Yes. Plattsburgh gets on average 150.8 cm of snow per year and has around 137 frost days.
Has the climate of Plattsburgh warmed?
Yes: Plattsburgh warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Plattsburgh?
The wettest day measured in Plattsburgh between 1940 and 2025 was 28 August 2011, with 121 mm of rain in 24 hours.
What was the windiest day in Plattsburgh?
The windiest day measured in Plattsburgh between 1940 and 2025 was 25 February 1956, with winds reaching 41.6 km/h.
What is the warmest month in Plattsburgh?
The warmest month in Plattsburgh is July (20.9 °C on average); the coldest is January (-7.9 °C).
How much does it rain in Plattsburgh?
Plattsburgh receives on average 1,074 mm of precipitation per year, spread over about 141 rainy days.
Is it sunny in Plattsburgh?
Plattsburgh 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 Plattsburgh?
The heaviest 24-hour snowfall measured in Plattsburgh between 1940 and 2025 was 30 November 1944, with 33.3 cm.
Are there tropical nights in Plattsburgh?
Yes: Plattsburgh has on average 7 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Plattsburgh?
In Plattsburgh, between 1940 and 2025, the highest apparent temperature reached 41.6 °C on 2 August 1975, and the lowest was -39.7 °C on 15 January 1957.
Compare Plattsburgh with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Plattsburgh