Syracuse climate — normals and trends
Syracuse (United States) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.7 °C and it receives 1,201 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 (21.5 °C on average) and the coldest is January (-4.6 °C). Rainfall peaks in June.
Syracuse averages 121 frost days, 12 hot days (≥ 30 °C) and 166 rainy days per year.
Syracuse has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 132 to 110 per year over the period.
The hottest day of the period reached 36.1 °C (on 21 July 2011) and the coldest -29.2 °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
SyracuseNew York
- coords
- 43.05°, -76.15°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.7°C
Average daily high
13.0°C
Average daily low
4.6°C
Annual rainfall
1,201mm
Sunshine / day
8.1h
Mean relative humidity
74%
Average peak wind
16.7km/h
Seasonal range
26.1°C
Frost days (< 0 °C)
121 d/yr
Hot days (≥ 30 °C)
12 d/yr
Rainy days (≥ 1 mm)
166 d/yr
Annual snowfall
155.7 cm
Average feels-like high
11.2 °C
Average feels-like low
1.7 °C
Average peak gust
39.0 km/h
Tropical nights (≥ 20 °C)
13 d/yr
Solar radiation
13.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.33 · 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
36.1 °C
21 July 2011
Coldest day
-29.2 °C
15 January 1957
Wettest day
101 mm
27 September 1985
Windiest day
48.1 km/h
15 October 1954
Strongest gust
122.4 km/h
15 October 1954
Hottest feels-like
40.1 °C
3 September 1953
Coldest feels-like
-34.5 °C
15 January 1957
Snowiest day
33.6 cm
10 March 1964
Sunniest day
14.8 h
17 June 2021
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 | -2.3 °C | -1.2 °C | 83 mm | -2 mm |
| Feb | -0.6 °C | -0.5 °C | 100 mm | +22 mm |
| Mar | 9.7 °C | +4.7 °C | 66 mm | -29 mm |
| Apr | 13.3 °C | +0.9 °C | 116 mm | +8 mm |
| May | 18.0 °C | -1.0 °C | 185 mm | +78 mm |
| Jun | 25.2 °C | +1.4 °C | 145 mm | +34 mm |
| Jul | 28.1 °C | +1.8 °C | 63 mm | -44 mm |
| Aug | 26.3 °C | +1.0 °C | 69 mm | -33 mm |
| Sep | 23.4 °C | +2.1 °C | 54 mm | -47 mm |
| Oct | 16.3 °C | +1.3 °C | 104 mm | +0 mm |
| Nov | 7.0 °C | -1.0 °C | 119 mm | +13 mm |
| Dec | 0.2 °C | -1.4 °C | 105 mm | +8 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 Syracuse?
Syracuse has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.7 °C and it receives 1,201 mm of precipitation per year.
What is the hottest day ever recorded in Syracuse?
The hottest day measured in Syracuse between 1940 and 2025 was 21 July 2011, reaching 36.1 °C.
What is the coldest day in Syracuse?
The coldest day measured in Syracuse between 1940 and 2025 was 15 January 1957, at -29.2 °C.
Does it snow in Syracuse?
Yes. Syracuse gets on average 155.7 cm of snow per year and has around 121 frost days.
Has the climate of Syracuse warmed?
Yes: Syracuse warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Syracuse?
The wettest day measured in Syracuse between 1940 and 2025 was 27 September 1985, with 101 mm of rain in 24 hours.
What was the windiest day in Syracuse?
The windiest day measured in Syracuse between 1940 and 2025 was 15 October 1954, with winds reaching 48.1 km/h.
What is the warmest month in Syracuse?
The warmest month in Syracuse is July (21.5 °C on average); the coldest is January (-4.6 °C).
How much does it rain in Syracuse?
Syracuse receives on average 1,201 mm of precipitation per year, spread over about 166 rainy days.
Is it sunny in Syracuse?
Syracuse gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.
What is the biggest single-day snowfall in Syracuse?
The heaviest 24-hour snowfall measured in Syracuse between 1940 and 2025 was 10 March 1964, with 33.6 cm.
Are there tropical nights in Syracuse?
Yes: Syracuse has on average 13 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Syracuse?
In Syracuse, between 1940 and 2025, the highest apparent temperature reached 40.1 °C on 3 September 1953, and the lowest was -34.5 °C on 15 January 1957.
Compare Syracuse with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Syracuse