Ajax, Ontario, is in for an unsettled week of weather, with showers and possible thunderstorms forecast through Thursday before conditions clear heading into the weekend. Environment Canada says Monday brings a 60 percent chance of showers and a high of 21°C, while Tuesday offers a brief sunny break before the risk of storms returns later in the week.
Residents can expect fog patches to develop overnight Monday and linger into Tuesday morning, driven by the sharp contrast between the warm air and the still-chilly waters of Lake Ontario. The Ajax buoy on the lake is currently reporting a water temperature of just 8°C, a key ingredient for fog and the kind of atmospheric instability that can fuel thunderstorms.
Tuesday, June 23, looks to be the standout day of the week, with sunny skies and a high of 25°C, though winds will pick up to 20 km/h out of the northwest in the afternoon. The UV index is expected to reach 8, or very high, on both Monday and Tuesday, meaning sun protection will be important for anyone spending time outdoors.
Thursday, June 25, brings the week’s highest storm risk, with Environment Canada calling for cloudy skies and a 60 percent chance of showers or thunderstorms. The high will be a comfortable 24°C. No weather alerts are currently in effect for Ajax, but Environment Canada has flagged elevated ground-level ozone and the potential for severe thunderstorms in the region this month.
Looking ahead, Saturday, June 27, promises a return to more settled conditions, with a mix of sun and cloud and a high of 24°C. For those planning outdoor activities, Tuesday and Saturday appear to be the best bets, while an umbrella will be a wise companion through Thursday.
