St. Catharines weather
At 6:15 PM local time it was clear and 12°C (53°F). Little to no rain in the next 24 hours. Best months for weather: May–Sep. St. Catharines sits 102 m (335 ft) above sea level, which keeps it cooler than the coast. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for St. Catharines, Ontario, Canada.
Current conditions
- Clouds
- 0%
- Chance of rain
- 0%
- Rain
- 0.0 mm/h
Hourly Forecast
Little to no rain in the next 24 hours
Daily Forecast
Best Time to Visit
Peak season May–SepOff season Nov–Apr
About St. Catharines weather
Is it raining in St. Catharines right now?
No. It’s clear and 12° right now. Little to no rain in the next 24 hours.
What’s the weather like in St. Catharines this week?
Over the next 7 days, expect highs of 14–21° and lows of 3–16°. Rain is likely on 3 of 7 days (Tuesday, Thursday, Friday). The driest day looks like Saturday.
Has it been raining in St. Catharines lately?
Barely. The past 7 days were mostly dry, with 0.4 mm of rain in total.
What should I pack for St. Catharines?
For the coming week, bring an umbrella or rain jacket and a warm layer for the evenings.
St. Catharines weather by month
When is the best time to visit St. Catharines?
Based on weather alone, the best time to visit St. Catharines is May–Sep, according to NASA's 2001–2025 climate averages. Nov–Apr tends to be the least pleasant. Average highs run from 0°C (31°F) in January to 26°C (80°F) in July.
What is the rainiest month in St. Catharines?
October is the wettest month, with about 89 mm (3.5 in) of rain on average. February is the driest, with about 51 mm (2.0 in).
What is the hottest month in St. Catharines?
July is the warmest, with average highs of 26°C (80°F) and lows of 19°C (65°F). January is the coolest, with highs of 0°C (31°F) and lows of -6°C (22°F).
Does St. Catharines have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is October at about 89 mm (3.5 in).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months