Reply Is your air conditioning working in tip-top shape? Here's what the Maryland summer 2021 weather is expected to be like, according to the Old Farmers' Almanac and Accuweather. (Tiffany Razzano/Patch) MARYLAND — With vaccinations reaching more Maryland residents and mask mandates lifted, folks are ready to kick off summer fun. Accuweather and the Old Farmers' Almanac have released their 2021 summer forecasts. What should Marylanders expect? Well, while it's too early to determine what each day will bring, if these outlooks are correct you should be sure to have your air conditioning charged up and the ice maker working. Officially, summer starts on June 20, so there's plenty of time to see what sort of weather patterns set in.