Weather in St. Catharines — today, tomorrow and 14-day forecast
Weather in St. Catharines now: +21°, partly cloudy, wind 3.4 m/s, humidity 67%. Accurate forecast for today, tomorrow, 3 days and 2 weeks — temperature, precipitation, pressure and wind.
Weather in St. Catharines now
Hourly forecast for today in St. Catharines
Weather in St. Catharines tomorrow
From +19° to +23° — day and night.
Weather in St. Catharines for 3 days
From +19° to +25° — day and night.
Weather in St. Catharines for the week
Including the 5-day outlook.
From +16° to +25° — day and night.
Weather in St. Catharines for 2 weeks
Including the 10-day outlook.
From +16° to +25° — day and night.
Weekend weather in St. Catharines
Weather for the weather-sensitive
📒 Weather diary in St. Catharines
Ready-made observation table for August: past days are already filled in with weather-station data — for school and beyond. Open the diary →
What to do in St. Catharines in weather like this 🎯
✉️ Weather forecast by email
Get the forecast for this city by email — every day at 17:00 Moscow time.
The Moon today 🌙
St. Catharines, Ontario, Canada. Population 136 803.
Precipitation map 🌧️
Cities near St. Catharines 📍
FAQ about weather in St. Catharines ❓
What's the weather in St. Catharines right now?
Now +21°, partly cloudy, wind 3.4 m/s, N, humidity 67%. Feels like +19°.
What's the weather in St. Catharines tomorrow?
Tomorrow: +23° by day, +19° at night, clear.
Sunrise and sunset in St. Catharines?
Sunrise 05:27, sunset 19:14, day length 13h 47m.
What's the pressure and humidity in St. Catharines?
Pressure 763 mmHg, humidity 67%, wind 4 m/s. Matters for weather-sensitive people.
Do I need an umbrella in St. Catharines today?
No, precipitation is unlikely — you can go out without an umbrella.
Do I need sunscreen in St. Catharines?
Yes, the UV index is 7 — high. Use SPF 30+, especially for children; no more than 20-30 minutes in direct sun unprotected.
Is it a good day for a picnic in St. Catharines?
Yes, it’s warm and dry (up to +24°) — a good time for a picnic, a walk or a barbecue.
How long is it safe to stay in the sun in St. Catharines?
At UV 7, no more than 20–30 minutes unprotected; longer with SPF 30+ and shade.
Is it a good day to wash the car in St. Catharines?
No precipitation expected — a good time to wash the car; rain won’t spoil it in the coming hours.
Is it good weather for a walk or a bike ride in St. Catharines?
Yes, dry and comfortable (up to +24°) — great for a walk, a bike ride or a run.
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Weather in St. Catharines — in detail
Weather in St. Catharines from “Pogoda 1” — an accurate, free forecast: current temperature, feels-like, wind, atmospheric pressure, humidity and precipitation. Available for today, tomorrow, 3, 5 and 10 days, a week, 2 weeks and a month, plus hourly weather, monthly climate, water temperature, air quality and an observation archive since 2017.
To quickly check the weather in St. Catharines anytime, add the city to favorites — and get a daily forecast by email at 17:00 (Moscow time). Note: the forecast may be refined as new data arrives. Data: OpenWeather, Open-Meteo, met.no.
Photo St. Catharines: Matt0401 / Public domain · Wikimedia Commons