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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scene Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
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Check the live forecast above for the next few hours in Guelph, as conditions can shift quickly off Lake Ontario. Hourly updates are your best tool for planning short errands or outdoor work, especially when spring and fall bring variable cloud and rain.
What does the hourly forecast show for Guelph today?
The live forecast above breaks down temperature, precipitation chance, wind speed, and humidity for each hour. This is particularly useful for timing a walk along the Speed River or deciding when to head out for errands before the afternoon breeze picks up. For a broader view, pair this with the Guelph weather 14 day outlook to see if a pattern is forming.
How reliable is the hourly data for Guelph?
Environment and Climate Change Canada issues hourly forecasts for Guelph, updated several times daily, and these are considered authoritative for southern Ontario. Local microclimates near the Grand River can cause slight temperature dips overnight, so check the Guelph weather hourly Environment Canada page for the official readings. The live forecast above draws from the same source.
Should I trust the hourly forecast for tomorrow morning?
Yes, but accuracy drops beyond 48 hours. For weather in Guelph tomorrow, the hourly forecast is reliable for timing your commute, especially if freezing rain is predicted.
Can I see a 7-day or 10-day hourly breakdown?
Hourly data is typically only available for the next 48 hours. For Guelph weather 7 days or weather in Guelph 10 days, you will get daily highs and lows, not per-hour details.
Where can I find the 30-day outlook for Guelph?
Environment Canada does not issue hourly data for Guelph weather 30 days. That range uses seasonal trends from the Canadian Meteorological Centre, not hour-by-hour readings.