Pembroke, Ontario can expect a few unsettled days to kick off the final week of June, but sun and warmer temperatures are on the way just in time for the weekend. Environment Canada says no weather alerts are in effect for the Petawawa-Pembroke-Cobden area, even as light showers moved through the region Monday afternoon.
As of Monday, June 22, 2026, the weather station at Garrison Petawawa reported 21.7°C under a light rainshower, with an east-southeast wind at 13 km/h. Forecasters see a mix of sun and cloud Monday and Tuesday, full sunshine Wednesday, and a 40 percent chance of showers on both Monday and Thursday. Wednesday is shaping up to be a highlight, with full sunshine and a high of 24°C.
By Friday, a mix of sun and cloud returns with a 30 percent chance of showers and a high of 24°C. Saturday and Sunday are expected to remain a mix of sun and cloud, with Sunday’s high reaching 28°C. That is a few degrees above the usual late-June maximum of 24°C for the Ottawa Valley.
Anyone heading outdoors today should take extra care. The UV index for June 22 is 8, which Environment Canada rates as very high. Health experts recommend staying out of direct sun between 11 a.m. and 3 p.m., wearing UV‑protective sunglasses, seeking shade, and reapplying sunscreen every two hours.
Environment Canada notes that average daily highs in Pembroke climb from 21°C to 25°C during June, with overnight lows near 11°C. The agency’s UV index, developed by its scientists in 1992, is now used by the World Health Organization as an international standard.
