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Innisfil, Ontario climate
Dfb Warm-summer humid continental
Innisfil has a strongly seasonal cold-temperate climate (Warm-summer humid continental, Köppen Dfb). The hottest month is July with an average daily high near 26°C, while the coldest is January averaging around −11°C at night. Precipitation is fairly even year-round, totalling about 978 mm. Snowfall is heavy (279 cm of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 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)Innisfil climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | −3 | −2 | 3 | 11 | 19 | 23 | 26 | 25 | 21 | 13 | 6 | 0 |
| Avg temp (°C) | −7 | −6 | −2 | 6 | 13 | 18 | 20 | 20 | 16 | 9 | 3 | −3 |
| Avg low (°C) | −11 | −11 | −6 | 1 | 7 | 12 | 15 | 14 | 10 | 5 | −1 | −6 |
| Precipitation (mm) | 94 | 76 | 60 | 77 | 78 | 88 | 77 | 86 | 80 | 84 | 89 | 90 |
| Snowfall (cm) | 69 | 60 | 30 | 14 | 1 | — | — | — | — | 3 | 36 | 66 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | −3 | −2 | 3 | 11 | 19 | 23 |
| Avg temp (°C) | −7 | −6 | −2 | 6 | 13 | 18 |
| Avg low (°C) | −11 | −11 | −6 | 1 | 7 | 12 |
| Precipitation (mm) | 94 | 76 | 60 | 77 | 78 | 88 |
| Snowfall (cm) | 69 | 60 | 30 | 14 | 1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 25 | 21 | 13 | 6 | 0 |
| Avg temp (°C) | 20 | 20 | 16 | 9 | 3 | −3 |
| Avg low (°C) | 15 | 14 | 10 | 5 | −1 | −6 |
| Precipitation (mm) | 77 | 86 | 80 | 84 | 89 | 90 |
| Snowfall (cm) | — | — | — | 3 | 36 | 66 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 74 | 69 | 69 | 67 | 63 | 59 | 59 | 60 | 71 | 77 | 79 |
| Relative humidity (%) | 91 | 89 | 82 | 77 | 74 | 72 | 69 | 69 | 72 | 78 | 83 | 89 |
| Wind speed (m/s) | 3.0 | 3.1 | 2.5 | 1.9 | 1.3 | 1.2 | 1.2 | 1.3 | 1.5 | 1.7 | 2.0 | 2.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 74 | 69 | 69 | 67 | 63 |
| Relative humidity (%) | 91 | 89 | 82 | 77 | 74 | 72 |
| Wind speed (m/s) | 3.0 | 3.1 | 2.5 | 1.9 | 1.3 | 1.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 59 | 60 | 71 | 77 | 79 |
| Relative humidity (%) | 69 | 69 | 72 | 78 | 83 | 89 |
| Wind speed (m/s) | 1.2 | 1.3 | 1.5 | 1.7 | 2.0 | 2.5 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Shanty Bay, 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.