When is the First Snowfall in Iowa? Average Dates by City

Discover the average first snowfall dates by Iowa city, from Mason City to Ottumwa. Learn when winter usually begins and how much snow Iowa receives.

When is the First Snowfall in Iowa? Average Dates by City

Iowa Weather Forecast

Getting those costumes ready? The trick-or-treat forecast for Friday and Saturday evenings is looking a bit damp, but thankfully mild! Rain and storm chances will be highest over central and southern Iowa up to 60% Friday evening with lower chances around 30 to 40% over northern Iowa. Saturday evening has just rain chances that are around 40 to 50%. So you might want to make sure your costume is poncho-compatible! The great news is that you definitely won’t need to break out the winter coats or snow boots this year!

Quick links:  ISCN Weather App | Current Conditions | Weather Radar | Soil Temperatures | Drought Monitor | National Weather Service

Lunar Eclipse in Iowa: When and How to See the August 2026 Eclipse

See the August 2026 lunar eclipse in Iowa. Find peak viewing times, what to expect, why the Moon turns red and when Iowa’s next lunar eclipse occurs.

What is a Squall Line?

Learn how squall line thunderstorms form, how fast they move, how long they last and whether they can produce tornadoes.

When Does Fall Start in Iowa? Meteorological vs. Astronomical Fall Explained

Learn when fall starts in Iowa, the difference between meteorological and astronomical autumn, and what weather to expect across the state.