Guelph Climate by Month
Guelph, Ontario, Canada
Warm summers and freezing winters, with rain spread through the year.
Guelph 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 (-10°C). About 36 in (921 mm) of rain falls in a typical year, with no clear rainy season. The air is humid, averaging 80% relative humidity.
- Warmest month
- 79°F(26°C)
- Average high, July
- Coldest nights
- 13°F(-10°C)
- Average low, February
- Rain per year
- 36 in(921 mm)
- No clear rainy season
- Humidity
- 80%
- Sunniest: July
Best and worst months in Guelph
Best for weatherJune and August are the best time for weather in Guelph: highs near 76°F (24°C) and about 3.3 in (83 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)
Guelph weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 27°F(-3°C) | 14°F(-10°C) | 2.4 in(61 mm) | 100% | 1.4 |
| FebFebruary | 28°F(-2°C) | 13°F(-10°C) | 2.4 in(61 mm) | 100% | 2.4 |
| MarMarch | 38°F(3°C) | 22°F(-5°C) | 2.3 in(59 mm) | 70% | 3.5 |
| AprApril | 51°F(10°C) | 33°F(1°C) | 3.1 in(80 mm) | 66% | 4.4 |
| MayMay | 65°F(18°C) | 44°F(7°C) | 3.5 in(89 mm) | 69% | 5.3 |
| JunJuneBest | 74°F(23°C) | 54°F(12°C) | 3.2 in(82 mm) | 74% | 5.9 |
| JulJuly | 79°F(26°C) | 58°F(15°C) | 3.7 in(94 mm) | 76% | 5.9 |
| AugAugustBest | 77°F(25°C) | 57°F(14°C) | 3.3 in(84 mm) | 75% | 5.2 |
| SepSeptember | 71°F(22°C) | 51°F(11°C) | 3.2 in(81 mm) | 77% | 4.0 |
| OctOctober | 57°F(14°C) | 40°F(5°C) | 3.1 in(79 mm) | 77% | 2.4 |
| NovNovember | 44°F(7°C) | 31°F(-1°C) | 3.2 in(81 mm) | 79% | 1.4 |
| DecDecember | 33°F(1°C) | 22°F(-6°C) | 2.8 in(70 mm) | 99% | 1.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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