A slight chance of showers is forecast for Memorial Day in Denver, with the odds of rain and thunder increasing in the afternoon.

There’s a 30% chance of showers moving in after 11 p.m. Sunday night and a 40% chance of showers Monday morning before 11 a.m. Otherwise, Memorial Day will be partly sunny with a high around 71 degrees. We could see the warmest temperatures of the year so far later in the week. Wednesday is expected to reach 92 degrees.

Some parts of the U.S. could see triple-digit temperatures over the weekend, while severe storms threaten other areas, according to forecasters.