Orillia Climate by Month
Orillia, Ontario, Canada
Warm summers and freezing winters, with rain spread through the year.
Warm summers and freezing winters, with rain spread through the year: that's Orillia's climate in short. Expect highs of 78°F (25°C) in July and 25°F (-4°C) in January, with the coldest nights (January) near 9°F (-13°C). About 42 in (1062 mm) of rain falls in a typical year, with no clear rainy season. The air is humid, averaging 80% relative humidity.
- Warmest month
- 78°F(25°C)
- Average high, July
- Coldest nights
- 9°F(-13°C)
- Average low, January
- Rain per year
- 42 in(1062 mm)
- No clear rainy season
- Humidity
- 80%
- Sunniest: July
Best and worst months in Orillia
Best for weatherThe most comfortable weather comes from June to August, with highs around 76°F (24°C) and about 3.4 in (85 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 25°F (-4°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in August.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Orillia weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 25°F(-4°C) | 9°F(-13°C) | 4.3 in(110 mm) | 93% | 1.4 |
| FebFebruary | 26°F(-3°C) | 9°F(-13°C) | 2.9 in(73 mm) | 90% | 2.3 |
| MarMarch | 36°F(2°C) | 18°F(-8°C) | 2.5 in(64 mm) | 81% | 3.4 |
| AprApril | 49°F(9°C) | 31°F(-1°C) | 3.3 in(84 mm) | 72% | 4.4 |
| MayMay | 64°F(18°C) | 42°F(6°C) | 3.9 in(99 mm) | 73% | 5.4 |
| JunJuneBest | 73°F(23°C) | 52°F(11°C) | 3.7 in(95 mm) | 78% | 5.9 |
| JulJulyBest | 78°F(25°C) | 58°F(14°C) | 3.1 in(79 mm) | 74% | 5.9 |
| AugAugustBest | 77°F(25°C) | 57°F(14°C) | 3.2 in(82 mm) | 75% | 5.2 |
| SepSeptember | 70°F(21°C) | 51°F(10°C) | 3.5 in(90 mm) | 78% | 4.0 |
| OctOctober | 56°F(13°C) | 40°F(5°C) | 3.7 in(94 mm) | 79% | 2.3 |
| NovNovember | 43°F(6°C) | 30°F(-1°C) | 3.8 in(96 mm) | 81% | 1.4 |
| DecDecember | 32°F(0°C) | 19°F(-7°C) | 3.8 in(96 mm) | 85% | 1.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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