The first long weekend of the summer has finally arrived. Here is a look at what is open and closed in the GTA on Victoria Day weekend 2025. What’s closed on Monday? What is open on Monday? Weather forecast: While Friday afternoon will see sunshine and a high of 27 C, rain is in the forecast on Saturday. Environment Canada is calling for a risk of a thunderstorm on Saturday and a high of 20 C. Sunshine returns on Sunday and Monday but will bring slightly cooler daytime highs of 17 C and 16 C respectively, according to the national weather agency. What to do: There are plenty of activities on offer around the GTA this long weekend. Here’s a list of some of the highlights of activities that are happening over the Victoria Day long weekend.