Niagara-on-the-Lake climate — normals and trends
Niagara-on-the-Lake (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.9 °C and it receives 1,006 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 (21.8 °C on average) and the coldest is February (-3.6 °C). Rainfall peaks in April.
Niagara-on-the-Lake averages 100 frost days, 0 hot days (≥ 30 °C) and 143 rainy days per year.
Niagara-on-the-Lake has warmed by +1.5 °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 115 to 85 per year over the period.
The hottest day of the period reached 31.6 °C (on 9 August 1949) and the coldest -24.3 °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
Niagara-on-the-LakeOntario
- coords
- 43.26°, -79.09°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.9°C
Average daily high
11.6°C
Average daily low
6.4°C
Annual rainfall
1,006mm
Sunshine / day
8.6h
Mean relative humidity
75%
Average peak wind
24.3km/h
Seasonal range
25.4°C
Frost days (< 0 °C)
100 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
143 d/yr
Annual snowfall
109.4 cm
Average feels-like high
9.0 °C
Average feels-like low
2.8 °C
Average peak gust
41.1 km/h
Tropical nights (≥ 20 °C)
31 d/yr
Solar radiation
14.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.27 · 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
31.6 °C
9 August 1949
Coldest day
-24.3 °C
18 February 1979
Wettest day
84 mm
9 September 2004
Windiest day
64.4 km/h
15 March 1959
Strongest gust
109.4 km/h
11 January 2017
Hottest feels-like
37.3 °C
3 September 1953
Coldest feels-like
-32.5 °C
17 January 1982
Snowiest day
29.1 cm
7 February 1942
Sunniest day
14.9 h
4 July 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 | -1.0 °C | -0.4 °C | 55 mm | -19 mm |
| Feb | -0.3 °C | +0.4 °C | 88 mm | +23 mm |
| Mar | 6.6 °C | +3.6 °C | 82 mm | +2 mm |
| Apr | 9.2 °C | +0.8 °C | 80 mm | -12 mm |
| May | 13.4 °C | -0.8 °C | 124 mm | +37 mm |
| Jun | 20.7 °C | +0.3 °C | 55 mm | -32 mm |
| Jul | 25.7 °C | +1.4 °C | 59 mm | -29 mm |
| Aug | 24.0 °C | -0.1 °C | 72 mm | -10 mm |
| Sep | 21.2 °C | +0.6 °C | 32 mm | -58 mm |
| Oct | 15.6 °C | +1.1 °C | 90 mm | +2 mm |
| Nov | 7.8 °C | -0.5 °C | 81 mm | -7 mm |
| Dec | 2.1 °C | -0.5 °C | 98 mm | +13 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 Niagara-on-the-Lake?
Niagara-on-the-Lake has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.9 °C and it receives 1,006 mm of precipitation per year.
What is the hottest day ever recorded in Niagara-on-the-Lake?
The hottest day measured in Niagara-on-the-Lake between 1940 and 2025 was 9 August 1949, reaching 31.6 °C.
What is the coldest day in Niagara-on-the-Lake?
The coldest day measured in Niagara-on-the-Lake between 1940 and 2025 was 18 February 1979, at -24.3 °C.
Does it snow in Niagara-on-the-Lake?
Yes. Niagara-on-the-Lake gets on average 109.4 cm of snow per year and has around 100 frost days.
Has the climate of Niagara-on-the-Lake warmed?
Yes: Niagara-on-the-Lake warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Niagara-on-the-Lake?
The wettest day measured in Niagara-on-the-Lake between 1940 and 2025 was 9 September 2004, with 84 mm of rain in 24 hours.
What was the windiest day in Niagara-on-the-Lake?
The windiest day measured in Niagara-on-the-Lake between 1940 and 2025 was 15 March 1959, with winds reaching 64.4 km/h.
What is the warmest month in Niagara-on-the-Lake?
The warmest month in Niagara-on-the-Lake is July (21.8 °C on average); the coldest is February (-3.6 °C).
How much does it rain in Niagara-on-the-Lake?
Niagara-on-the-Lake receives on average 1,006 mm of precipitation per year, spread over about 143 rainy days.
Is it sunny in Niagara-on-the-Lake?
Niagara-on-the-Lake gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Niagara-on-the-Lake?
The heaviest 24-hour snowfall measured in Niagara-on-the-Lake between 1940 and 2025 was 7 February 1942, with 29.1 cm.
Are there tropical nights in Niagara-on-the-Lake?
Yes: Niagara-on-the-Lake has on average 31 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Niagara-on-the-Lake?
In Niagara-on-the-Lake, between 1940 and 2025, the highest apparent temperature reached 37.3 °C on 3 September 1953, and the lowest was -32.5 °C on 17 January 1982.
Compare Niagara-on-the-Lake with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Niagara-on-the-Lake