Worthington, IA Weather & Growing Conditions
Overnight
51°F
Slight Chance Rain Showers
A slight chance of rain showers after 5am. Mostly cloudy. Low around 51, with temperatures rising to around 54 overnight. South wind 10 to 15 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Slight Chance Rain Showers | 10 to 15 mph S | 16% |
| Wednesday | 54°F | Chance Rain Showers | 15 mph SW | 42% |
| Wednesday Night | 45°F | Chance Rain Showers | 15 mph SW | 31% |
| Thursday | 53°F | Rain Showers Likely | 10 mph NW | 55% |
| Thursday Night | 39°F | Mostly Cloudy | 10 mph N | 12% |
| Friday | 48°F | Mostly Sunny | 5 to 10 mph N | 1% |
| Friday Night | 29°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 50°F | Sunny | 0 to 5 mph NW | 1% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 2% |
| Sunday | 56°F | Sunny | 5 to 10 mph W | 2% |
| Sunday Night | 35°F | Clear | 0 to 5 mph W | 0% |
| Monday | 60°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 60°F | Sunny | 5 mph NW | 0% |
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 Nov 4, 2026.