Flatlands climate — normals and trends
Flatlands (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.1 °C and it receives 1,152 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 (23.9 °C on average) and the coldest is January (0.3 °C). Rainfall peaks in March.
Flatlands averages 62 frost days, 6 hot days (≥ 30 °C) and 120 rainy days per year.
Flatlands 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 73 to 51 per year over the period.
The hottest day of the period reached 34.3 °C (on 6 July 2010) and the coldest -19.6 °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
FlatlandsNew York
- coords
- 40.62°, -73.93°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.1°C
Average daily high
15.1°C
Average daily low
9.4°C
Annual rainfall
1,152mm
Sunshine / day
8.9h
Mean relative humidity
72%
Average peak wind
22.0km/h
Seasonal range
23.6°C
Frost days (< 0 °C)
62 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
120 d/yr
Annual snowfall
54.1 cm
Average feels-like high
13.5 °C
Average feels-like low
6.6 °C
Average peak gust
36.2 km/h
Tropical nights (≥ 20 °C)
59 d/yr
Solar radiation
14.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.36 · 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
34.3 °C
6 July 2010
Coldest day
-19.6 °C
18 February 1979
Wettest day
145 mm
14 September 1944
Windiest day
76.4 km/h
29 October 2012
Strongest gust
141.8 km/h
29 October 2012
Hottest feels-like
40.6 °C
24 June 2025
Coldest feels-like
-27.6 °C
21 January 1985
Snowiest day
34.8 cm
23 January 2016
Sunniest day
14.1 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 | 2.4 °C | -0.9 °C | 33 mm | -61 mm |
| Feb | 4.5 °C | +0.3 °C | 96 mm | +8 mm |
| Mar | 10.9 °C | +3.0 °C | 102 mm | -9 mm |
| Apr | 14.7 °C | +1.5 °C | 105 mm | +5 mm |
| May | 18.8 °C | +0.4 °C | 148 mm | +51 mm |
| Jun | 24.6 °C | +1.1 °C | 71 mm | -12 mm |
| Jul | 28.7 °C | +2.1 °C | 138 mm | +44 mm |
| Aug | 25.2 °C | -0.8 °C | 40 mm | -58 mm |
| Sep | 23.4 °C | +0.7 °C | 71 mm | -20 mm |
| Oct | 17.9 °C | +0.6 °C | 105 mm | +12 mm |
| Nov | 11.6 °C | 0.0 °C | 58 mm | -39 mm |
| Dec | 4.4 °C | -1.6 °C | 77 mm | -29 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 Flatlands?
Flatlands has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.1 °C and it receives 1,152 mm of precipitation per year.
What is the hottest day ever recorded in Flatlands?
The hottest day measured in Flatlands between 1940 and 2025 was 6 July 2010, reaching 34.3 °C.
What is the coldest day in Flatlands?
The coldest day measured in Flatlands between 1940 and 2025 was 18 February 1979, at -19.6 °C.
Does it snow in Flatlands?
Yes. Flatlands gets on average 54.1 cm of snow per year and has around 62 frost days.
Has the climate of Flatlands warmed?
Yes: Flatlands warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Flatlands?
The wettest day measured in Flatlands between 1940 and 2025 was 14 September 1944, with 145 mm of rain in 24 hours.
What was the windiest day in Flatlands?
The windiest day measured in Flatlands between 1940 and 2025 was 29 October 2012, with winds reaching 76.4 km/h.
What is the warmest month in Flatlands?
The warmest month in Flatlands is July (23.9 °C on average); the coldest is January (0.3 °C).
How much does it rain in Flatlands?
Flatlands receives on average 1,152 mm of precipitation per year, spread over about 120 rainy days.
Is it sunny in Flatlands?
Flatlands gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Flatlands?
The heaviest 24-hour snowfall measured in Flatlands between 1940 and 2025 was 23 January 2016, with 34.8 cm.
Are there tropical nights in Flatlands?
Yes: Flatlands has on average 59 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Flatlands?
In Flatlands, between 1940 and 2025, the highest apparent temperature reached 40.6 °C on 24 June 2025, and the lowest was -27.6 °C on 21 January 1985.
Compare Flatlands with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Flatlands