Worthington, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Worthington, a city in Dubuque County, Iowa.
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 for Worthington
| 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) for Worthington (42.398, -91.121). Updated through the day.
Growing snapshot for Worthington
Last spring frost
Apr 28
First fall frost
Oct 10
Growing season
164 days
Hardiness zone
5a
More local growing data for Worthington: nearby ZIP 52078 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Asbury
Balltown
Bankston
Bernard
Centralia
Dubuque
Durango
Epworth
Farley
Graf
Holy Cross
Luxemburg
New Vienna
Peosta
Rickardsville
Sageville
Sherrill
Climate data from the nearest NOAA station, Cascade, Ia (8.6 mi from Worthington). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.