Cornwall weather
At 7:15 PM local time it was clear and 4°C (39°F). Little to no rain in the next 24 hours. Best months for weather: May–Sep. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Cornwall, 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–Mar
About Cornwall weather
Is it raining in Cornwall right now?
No. It’s clear and 4° right now. Little to no rain in the next 24 hours.
What’s the weather like in Cornwall this week?
Over the next 7 days, expect highs of 8–21° and lows of -1–10°. Rain is likely on 1 of 7 days (Thursday). The driest day looks like Saturday.
Has it been raining in Cornwall lately?
Barely. The past 7 days were mostly dry, with 0.8 mm of rain in total.
What should I pack for Cornwall?
For the coming week, bring an umbrella or rain jacket and a warm winter coat.
Cornwall weather by month
When is the best time to visit Cornwall?
Based on weather alone, the best time to visit Cornwall is May–Sep, according to NASA's 2001–2025 climate averages. Nov–Mar tends to be the least pleasant. Average highs run from -4°C (24°F) in January to 26°C (80°F) in July.
What is the rainiest month in Cornwall?
June is the wettest month, with about 110 mm (4.3 in) of rain on average. February is the driest, with about 51 mm (2.0 in).
What is the hottest month in Cornwall?
July is the warmest, with average highs of 26°C (80°F) and lows of 16°C (61°F). January is the coolest, with highs of -4°C (24°F) and lows of -14°C (8°F).
Does Cornwall have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is June at about 110 mm (4.3 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