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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Toronto Post Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Today in Guelph, the live forecast above shows a high near 8°C and a low around 1°C with overcast skies and a chance of drizzle — the first day of spring chill typical for late March in southern Ontario.
What conditions are expected over the next week?
According to the live forecast, Tuesday will bring a mix of sun and cloud, with highs near 10°C; Wednesday sees rain returning by afternoon. For the guelph weather 7 days outlook, overnight lows hover near freezing through Friday. If you are checking weather in guelph tomorrow, the data suggests a dry morning before a system moves in. Extended models for guelph weather 14 day and guelph weather 30 days remain uncertain, but the weather in guelph 10 days outlook indicates a warming trend next weekend. For those planning the afternoon, guelph weather today hourly details show the best outdoor window between 1 p.m. and 4 p.m. as clouds thin temporarily.
Is the wind a factor today?
Yes. Southwest winds at 20–30 km/h, gusting to 40 km/h, will make it feel a few degrees cooler. Wind chill values this morning near –3°C.
When will the next precipitation arrive?
Light drizzle is possible this afternoon, but the main rain system moves in late Wednesday morning and could bring 5–10 mm. See the weather warning page for any updates on advisories.
How does today compare to seasonal averages?
Today’s high of 8°C is within 1–2 degrees of the 30-year normal for this date in Guelph. Overnight lows are slightly milder than the typical –1°C for late March, thanks to cloud cover trapping warmth.
What is the best time for outdoor activities today?
The driest and calmest window will be between 1 p.m. and 4 p.m., when southwest winds ease slightly and rain is least likely. After sunset, drizzle returns and temperatures drop quickly.