Brockville – Today’s forecast calls for a mix of sun and clouds with a 30 percent chance of showers. The wind is northeast at 20 km/h and will become light early this morning. Today’s high is 20, and the UV index is 9 or very high.
Tonight will be mainly cloudy with a 30 percent chance of showers early this evening. Tonight’s low will be 12.
Saturday, we will see clearing in the morning with a high of 22. The UV index is 9 or very high.
Your 5-day local forecast:
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Good Afternoon, Brockville, Leeds-Grenville! Local Weather Update – Friday, May 15, 2026