Brockville — Today, cloudy with a 40 percent chance of drizzle this morning. Fog patches dissipating this morning. Wind becoming north 20 km/h this morning. High 7°C. UV index 3 or moderate.
Tonight, cloudy, becoming partly cloudy near midnight. Wind northeast 20 km/h. Low minus 1°C. Wind chill minus 7 overnight.
Thursday, becoming cloudy in the morning. A few showers beginning early in the afternoon. Wind northeast 20 km/h. High plus 4°C. Wind chill minus 7 in the morning. UV index 4 or moderate.
Your 5-day local forecast:
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Good Morning, Brockville, Leeds-Grenville! Local Weather Update – Monday, September 14, 2026