Second Saturday of February — Wine About Winter
Mid-March — Annual Meeting/Mixer
First Weekend in June — Spring City-Wide Garage Sales
Second Saturday of June — Museum Day
Last Full Weekend of July — The Nemaha County Free Fair
Saturday night of Fair Weekend — Cruise Night
Sunday of Fair Weekend — Seneca Car Show and Fair Parade
Friday before Labor Day — Chamber/SDI Golf Tournament
Third Weekend of September — Highway 36 Treasure Hunt — City-Wide Garage Sales
Second Saturday of October — Oktoberfest
Saturday before Halloween — Seneca Spooktacular
Second Saturday of November — Seneca's Night Out
Friday After Thanksgiving — Santa Claus Comes To Town
Saturday After Thanksgiving — Small Business Saturday
Second Saturday of December — Kids' Movie Matinée