Bolton, Canada Climate by Month
Bolton, Ontario, Canada
Warm summers and freezing winters, with rain spread through the year.
Bolton has warm summers and freezing winters, with rain spread through the year. Expect highs of 79°F (26°C) in July and 27°F (-3°C) in January, with the coldest nights (February) near 13°F (-11°C). It gets 32 in (816 mm) of rain a year, spread across the months. The air is humid, averaging 82% relative humidity.
- Warmest month
- 79°F(26°C)
- Average high, July
- Coldest nights
- 13°F(-11°C)
- Average low, February
- Rain per year
- 32 in(816 mm)
- No clear rainy season
- Humidity
- 82%
- Sunniest: July
Best and worst months in Bolton
Best for weatherThe most comfortable weather comes from June to August, with highs around 76°F (25°C) and about 3.1 in (78 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; January is the coldest, with highs of only 27°F (-3°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 June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Bolton weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 27°F(-3°C) | 13°F(-10°C) | 2.4 in(61 mm) | 100% | 1.4 |
| FebFebruary | 28°F(-2°C) | 13°F(-11°C) | 2.0 in(52 mm) | 100% | 2.3 |
| MarMarch | 37°F(3°C) | 21°F(-6°C) | 1.9 in(48 mm) | 73% | 3.5 |
| AprApril | 49°F(10°C) | 32°F(0°C) | 2.9 in(74 mm) | 70% | 4.4 |
| MayMay | 64°F(18°C) | 42°F(6°C) | 3.1 in(80 mm) | 73% | 5.4 |
| JunJuneBest | 73°F(23°C) | 53°F(11°C) | 3.1 in(80 mm) | 77% | 5.9 |
| JulJulyBest | 79°F(26°C) | 58°F(14°C) | 3.2 in(82 mm) | 77% | 5.9 |
| AugAugustBest | 78°F(25°C) | 58°F(14°C) | 2.9 in(73 mm) | 78% | 5.2 |
| SepSeptember | 71°F(22°C) | 51°F(11°C) | 2.7 in(69 mm) | 82% | 4.0 |
| OctOctober | 57°F(14°C) | 40°F(5°C) | 2.9 in(74 mm) | 85% | 2.3 |
| NovNovember | 45°F(7°C) | 31°F(0°C) | 2.7 in(69 mm) | 76% | 1.4 |
| DecDecember | 34°F(1°C) | 22°F(-5°C) | 2.1 in(54 mm) | 96% | 1.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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