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Orillia, Ontario climate
Dfb Warm-summer humid continental
Orillia has a strongly seasonal cold-temperate climate (Warm-summer humid continental, Köppen Dfb). The hottest month is July with an average daily high near 79°F, while the coldest is January averaging around 9°F at night. Precipitation is fairly even year-round, totalling about 42 inches. Snowfall is heavy (126 inches 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)Orillia climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 24 | 27 | 38 | 52 | 65 | 74 | 79 | 77 | 69 | 56 | 43 | 31 |
| Avg temp (°F) | 17 | 19 | 30 | 42 | 55 | 64 | 69 | 68 | 61 | 48 | 36 | 25 |
| Avg low (°F) | 9 | 11 | 21 | 33 | 45 | 55 | 60 | 58 | 52 | 41 | 30 | 19 |
| Precipitation (in) | 4.6 | 2.7 | 2.4 | 3.1 | 3.3 | 3.4 | 3.3 | 3.2 | 3.2 | 3.7 | 4.1 | 4.4 |
| Snowfall (in) | 35.4 | 21.7 | 10.8 | 5.9 | 0.2 | — | — | — | — | 2.1 | 16.6 | 33.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 24 | 27 | 38 | 52 | 65 | 74 |
| Avg temp (°F) | 17 | 19 | 30 | 42 | 55 | 64 |
| Avg low (°F) | 9 | 11 | 21 | 33 | 45 | 55 |
| Precipitation (in) | 4.6 | 2.7 | 2.4 | 3.1 | 3.3 | 3.4 |
| Snowfall (in) | 35.4 | 21.7 | 10.8 | 5.9 | 0.2 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 79 | 77 | 69 | 56 | 43 | 31 |
| Avg temp (°F) | 69 | 68 | 61 | 48 | 36 | 25 |
| Avg low (°F) | 60 | 58 | 52 | 41 | 30 | 19 |
| Precipitation (in) | 3.3 | 3.2 | 3.2 | 3.7 | 4.1 | 4.4 |
| Snowfall (in) | — | — | — | 2.1 | 16.6 | 33.8 |
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 (mph) | 6.7 | 7.0 | 5.7 | 4.2 | 2.8 | 2.6 | 2.8 | 2.9 | 3.3 | 3.8 | 4.5 | 5.5 |
| 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 (mph) | 6.7 | 7.0 | 5.7 | 4.2 | 2.8 | 2.6 |
| 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 (mph) | 2.8 | 2.9 | 3.3 | 3.8 | 4.5 | 5.5 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Coldwater Warminster, a weather station, about 10 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.