In large bowl, mix sugar, flour, cinnamon and nutmeg. Stir in blueberries. Pour into pastry-lined pie plate. Sprinkle with lemon juice. Cut butter into small pieces; place on blueberries. Cover with top pastry. Cut slits for venting and seal.
Place on a pie baking sheet or place foil on lower oven rack to prevent dripping. Bake 35 to 45 minutes, or until crust is golden brown and juice begins to bubble through slits in crust. Remove foil for last 15 minutes of baking. Cool.