St. John's, Canada Weather
St. John's hourly forecast: next 24 hours
Today's high of 73°F (23°C) is about 5°F (3°C) above the typical August high of 68°F (20°C).
Current conditions in detail
St. John's weather tomorrow (Friday, August 14)
Tomorrow in St. John's looks partly cloudy, with a high of 65° and an overnight low of 58°. There is a 75% chance of rain - plan accordingly. Winds top out near 16 mph, and the UV index reaches 3 (low).
St. John's 14-day forecast
About the weather in St. John's
St. John's has a humid continental climate, marked by warm summers and cold, often snowy winters. Average daytime highs range from about 33°F (0°C) in February to around 68°F (20°C) in August, and the city records roughly 158 days of measurable precipitation a year.
St. John's weather: quick facts
- Hottest month: August - highs near 68°F (20°C)
- Coldest month: February - highs near 33°F (0°C)
- Record high: 83°F (28°C) · Record low: 2°F (-16°C) (2015–2024)
- Wettest month: January (16 rainy days) · Sunniest: July (9.0 h sun/day)
- Climate type: humid continental - warm summers and cold, often snowy winters
- Snow: about 42 days a year
Temperatures through the year
The warmest stretch of the year centers on August. Highs average 68°F (20°C) and overnight lows stay near 58°F (14°C). The coolest month is February, with typical highs of 33°F (0°C) and lows around 21°F (-6°C). Based on 2015–2024 weather data, temperatures have reached as high as 83°F (28°C) and dropped as low as 2°F (-16°C).
Rain, sun and snow
January is usually the wettest month. It brings about 6.1 inches (156 mm) of rain over 16 days, while July is the driest. July brings the most sunshine, averaging 9.0 hours of sun a day. Snow falls on about 42 days in a typical year, mostly from November through May.
Season by season
Spring (March through May)
Spring in St. John's is brisk and cold, with daytime highs averaging 41°F (5°C) and nights around 30°F (-1°C); expect showers on roughly 40 days across the season, plus around 13 snowy days.
Summer (June through August)
Summer in St. John's stays on the cool side of mild, with daytime highs averaging 64°F (18°C) and nights around 53°F (11°C); expect showers on roughly 36 days across the season.
Fall (September through November)
Fall in St. John's runs cold, with daytime highs averaging 53°F (12°C) and nights around 44°F (7°C); expect showers on roughly 39 days across the season, plus around 3 snowy days.
Winter (December through February)
Winter in St. John's is bitterly cold, with daytime highs averaging 34°F (1°C) and nights around 24°F (-4°C); expect showers on roughly 44 days across the season, plus around 26 snowy days. Wind makes those temperatures feel harsher than they sound - pair the forecast winds with the wind speed converter to judge conditions on exposed skin.
Average temperatures in St. John's by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 33° | 23° | 16 | 6.1 in | 3.9 h/day | 81% |
| February | 33° | 21° | 14 | 5.0 in | 4.8 h/day | 77% |
| March | 35° | 24° | 14 | 5.0 in | 6.5 h/day | 79% |
| April | 41° | 31° | 14 | 4.8 in | 6.6 h/day | 82% |
| May | 49° | 36° | 12 | 3.6 in | 8.6 h/day | 82% |
| June | 58° | 46° | 13 | 4.2 in | 7.8 h/day | 85% |
| July | 66° | 54° | 12 | 3.6 in | 9.0 h/day | 86% |
| August | 68° | 58° | 11 | 3.7 in | 8.9 h/day | 83% |
| September | 62° | 52° | 12 | 4.7 in | 7.2 h/day | 82% |
| October | 53° | 44° | 12 | 3.9 in | 5.6 h/day | 81% |
| November | 45° | 36° | 14 | 6.1 in | 3.9 h/day | 81% |
| December | 37° | 28° | 14 | 5.0 in | 3.2 h/day | 80% |