Source: Matt Snyder, CBS Sports 
The weather.com forecast shows that it’ll be rather bearable for this time of year come gametime in Fenway Park. At first pitch, it’s supposed to be 49 degrees with no chance of rain and very little wind.
The chances of rain throughout the game, however, go up a bit. From the 9:00 through midnight hours, there’s a 20 percent chance of rain, but it shouldn’t be enough to postpone the game.