Alliston weather
At 6:15 PM local time it was clear and 9°C (48°F). Little to no rain in the next 24 hours. Best months for weather: May–Sep. Alliston sits 223 m (732 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 Alliston, 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 Alliston weather
Is it raining in Alliston right now?
No. It’s clear and 9° right now. Little to no rain in the next 24 hours.
What’s the weather like in Alliston this week?
Over the next 7 days, expect highs of 13–22° and lows of 3–15°. Rain is likely on 3 of 7 days (Wednesday, Thursday, Friday). The driest day looks like Saturday.
Has it been raining in Alliston lately?
Barely. The past 7 days were mostly dry, with 0.0 mm of rain in total.
What should I pack for Alliston?
For the coming week, bring an umbrella or rain jacket and a warm winter coat.
Alliston weather by month
When is the best time to visit Alliston?
Based on weather alone, the best time to visit Alliston is May–Sep, according to NASA's 2001–2025 climate averages. Nov–Apr tends to be the least pleasant. Average highs run from -4°C (26°F) in January to 27°C (81°F) in July.
What is the rainiest month in Alliston?
October is the wettest month, with about 78 mm (3.1 in) of rain on average. February is the driest, with about 52 mm (2.0 in).
What is the hottest month in Alliston?
July is the warmest, with average highs of 27°C (81°F) and lows of 15°C (60°F). January is the coolest, with highs of -4°C (26°F) and lows of -11°C (12°F).
Does Alliston have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is October at about 78 mm (3.1 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