Grimsby, Canada Climate by Month
Grimsby, Ontario, Canada
Warm summers and freezing winters, with rain spread through the year.
The climate in Grimsby is one of warm summers and freezing winters, with rain spread through the year. Expect highs of 80°F (26°C) in July and 31°F (0°C) in January, with the coldest nights (January) near 19°F (-7°C). About 34 in (870 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 80°F(26°C)
- Average high, July
- Coldest nights
- 19°F(-7°C)
- Average low, January
- Rain per year
- 34 in(870 mm)
- No clear rainy season
- Humidity
- 77%
- Sunniest: June
Best and worst months in Grimsby
Best for weatherJune to August are the best time for weather in Grimsby: highs near 77°F (25°C) and about 3.0 in (77 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; January is the coldest, with highs of only 31°F (0°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)
Grimsby weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 31°F(0°C) | 19°F(-7°C) | 2.8 in(71 mm) | 86% | 1.4 |
| FebFebruary | 32°F(0°C) | 20°F(-6°C) | 2.4 in(61 mm) | 82% | 2.3 |
| MarMarch | 41°F(5°C) | 28°F(-2°C) | 2.4 in(61 mm) | 75% | 3.4 |
| AprApril | 53°F(12°C) | 37°F(3°C) | 3.3 in(84 mm) | 70% | 4.4 |
| MayMay | 65°F(18°C) | 47°F(8°C) | 3.1 in(79 mm) | 72% | 5.5 |
| JunJuneBest | 74°F(24°C) | 57°F(14°C) | 3.3 in(83 mm) | 74% | 6.0 |
| JulJulyBest | 80°F(26°C) | 63°F(17°C) | 2.7 in(68 mm) | 69% | 6.0 |
| AugAugustBest | 78°F(26°C) | 62°F(17°C) | 3.1 in(79 mm) | 72% | 5.2 |
| SepSeptember | 71°F(22°C) | 55°F(13°C) | 2.9 in(74 mm) | 76% | 4.1 |
| OctOctober | 58°F(15°C) | 44°F(7°C) | 2.8 in(70 mm) | 78% | 2.4 |
| NovNovember | 47°F(8°C) | 35°F(2°C) | 2.6 in(67 mm) | 81% | 1.5 |
| DecDecember | 37°F(3°C) | 26°F(-3°C) | 2.9 in(73 mm) | 85% | 1.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
All 20 places like Grimsby →- 🇨🇦ChathamOntario, Canada · Pop. 44k99%matchSame winter lowsSimilar rainfallGrimsby vs Chatham →
- 🇨🇦Norfolk CountyOntario, Canada · Pop. 61k99%matchSame summer highsSame sunshineGrimsby vs Norfolk County →
- 🇨🇦LondonOntario, Canada · Pop. 422k99%matchSame sunshineSame humidityGrimsby vs London →
- 🇨🇦AjaxOntario, Canada · Pop. 120k99%matchSame summer highsSimilar rainfallGrimsby vs Ajax →
- 🇺🇸EriePennsylvania, United States · Pop. 99k98%matchSame summer highsSame winter lowsGrimsby vs Erie →