Worthington, IA Weather & Growing Conditions
Today
81°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Partly sunny. High near 81, with temperatures falling to around 78 in the afternoon. Southwest wind 5 to 10 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 40% |
| Tonight | 63°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 77% |
| Wednesday | 74°F | Showers And Thunderstorms Likely | 5 mph N | 63% |
| Wednesday Night | 57°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 32% |
| Thursday | 79°F | Slight Chance Rain Showers then Sunny | 0 to 5 mph NE | 21% |
| Thursday Night | 59°F | Mostly Clear | 0 mph | 1% |
| Friday | 81°F | Sunny | 0 to 5 mph S | 3% |
| Friday Night | 64°F | Mostly Clear | 5 mph S | 9% |
| Saturday | 85°F | Mostly Sunny | 5 to 10 mph SW | 10% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 26% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 10 mph S | 26% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 42% |
| Monday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 42% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 10 mph E | 39% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Worthington, IA
Last spring frost
Apr 28
First fall frost
Oct 10
Growing season
164 days
Hardiness zone
5a
Explore more for Worthington, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Cascade, Ia (8.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.