Bill Hader Flint Lockwood Anna Faris Sam Sparks James Caan Tim Lockwood Will Forte Chester V Andy Samberg Brent McHale Benjamin Bratt Manny Neil Patrick Harris Steve Terry Crews Earl Devereaux Kristen Schaal Barb Cody Cameron Barry / Dill Pickle Melissa Sturm Sentinel Louise / Live Corp Scientist Kris Pearn Sentinel Peter / Labcoat Jenny Craig Kellman Fintly McCallahan / Idea Pants Guy Khamani Griffin Cal Devereaux Bridget Hoffman Young Flint Al Roker Patrick Patrickson Steve Alterman Additional Voices June Christopher Additional Voices David Cowgill Additional Voices Eddie Frierson Additional Voices Elisa Gabrielli Additional Voices Jackie Gonneau Additional Voices Tania Gunadi Additional Voices Walter Jones Additional Voices Ashley Lambert Additional Voices