Calendar
January:
- Caucuses (early)
- Iowa Legislature in session (2nd Monday)
- State of the Union address (mid)
- Iowa Pork Congress (late)
- Winter Iowa Games (late)
- Winter Iowa Games (early to mid)
- Iowa state high school wrestling tournament (middle)
- MLB spring training begins (late)
- Academy Awards (Oscars) (late)
- Iowa girls' state high school basketball tournament (late)
- Start of tornado season
- Iowa Legislature: Funnel date (early)
- Daylight Saving Time begins (second Sunday)
- High school spring break (mid)
- MLB opening day (end)
- Iowa Cubs season begins (start)
- Statewide tornado drill (early)
- Federal income taxes due (15th)
- Per-diems run out for Iowa Legislature (mid-late)
- Drake Relays (late)
- Arbor Day (last Friday in April)
- State income taxes due (30th)
- Corn-planting season (mainly May 2 to May 16)
- Clive After Five begins (early)
- College graduation (early)
- Soybean-planting season (mainly May 14 to June 2)
- High school graduation (late)
- CelebrAsian (late)
- Peak tornado month
- Primary elections (early, not all years)
- NCAA Outdoor Track and Field Championship at Drake (early-mid)
- Hy-Vee Triathlon (mid)
- Des Moines Arts Festival (late)
- Ragbrai (mid-late)
- Iowa Summer Games (late)
- Italian-American Heritage Festival
- National Balloon Classic (late July to early August)
- Sales tax holiday (first Friday and Saturday)
- Iowa State Fair (middle)
- School resumes (late)
- End of Iowa Cubs season (early)
- School board elections (mid-early)
- Soybean-harvesting season (mainly October 1 to October 15)
- Corn-harvesting season (mainly October 7 to October 31)
- Des Moines Marathon (mid)
- Daylight Saving Time ends (first Sunday)
- Election day (early)
- First snowfall - Nov. 10 north, Nov. 22nd central, Nov. 30 south
- Geese start migrating south (late)