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Niagara-on-the-Lake, Ontario climate
Cfa Humid subtropical
Niagara-on-the-Lake has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 26°C, while the coldest is January averaging around −5°C at night. Around 681 mm of precipitation falls each year, peaking in June (78 mm) and easing off in February (36 mm).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Niagara-on-the-Lake climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 0 | 1 | 5 | 10 | 17 | 22 | 26 | 26 | 22 | 15 | 9 | 3 |
| Avg temp (°C) | −2 | −2 | 1 | 7 | 13 | 19 | 22 | 22 | 19 | 12 | 6 | 1 |
| Avg low (°C) | −5 | −5 | −2 | 3 | 9 | 15 | 19 | 19 | 15 | 9 | 3 | −2 |
| Precipitation (mm) | 47 | 36 | 43 | 74 | 66 | 78 | 62 | 53 | 65 | 61 | 52 | 44 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 0 | 1 | 5 | 10 | 17 | 22 |
| Avg temp (°C) | −2 | −2 | 1 | 7 | 13 | 19 |
| Avg low (°C) | −5 | −5 | −2 | 3 | 9 | 15 |
| Precipitation (mm) | 47 | 36 | 43 | 74 | 66 | 78 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 26 | 22 | 15 | 9 | 3 |
| Avg temp (°C) | 22 | 22 | 19 | 12 | 6 | 1 |
| Avg low (°C) | 19 | 19 | 15 | 9 | 3 | −2 |
| Precipitation (mm) | 62 | 53 | 65 | 61 | 52 | 44 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 78 | 74 | 73 | 73 | 72 | 67 | 63 | 62 | 62 | 72 | 75 | 77 |
| Relative humidity (%) | 86 | 84 | 80 | 78 | 77 | 75 | 73 | 73 | 74 | 78 | 81 | 84 |
| Wind speed (m/s) | 5.6 | 5.3 | 4.5 | 3.9 | 3.0 | 2.9 | 2.9 | 3.1 | 3.6 | 4.3 | 4.7 | 5.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 78 | 74 | 73 | 73 | 72 | 67 |
| Relative humidity (%) | 86 | 84 | 80 | 78 | 77 | 75 |
| Wind speed (m/s) | 5.6 | 5.3 | 4.5 | 3.9 | 3.0 | 2.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 62 | 62 | 72 | 75 | 77 |
| Relative humidity (%) | 73 | 73 | 74 | 78 | 81 | 84 |
| Wind speed (m/s) | 2.9 | 3.1 | 3.6 | 4.3 | 4.7 | 5.2 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Port Weller (aut), a weather station, about 11 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.