Derby, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Derby, a city in Lucas County, Iowa.
Overnight
46°F
Cloudy
Cloudy. Low around 46, with temperatures rising to around 48 overnight. West northwest wind around 14 mph, with gusts as high as 21 mph.
7-day forecast for Derby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Cloudy | 14 mph WNW | 13% |
| Wednesday | 53°F | Mostly Cloudy | 12 to 16 mph W | 14% |
| Wednesday Night | 43°F | Mostly Cloudy then Slight Chance Rain Showers | 10 mph W | 20% |
| Thursday | 53°F | Chance Rain Showers | 8 to 12 mph NW | 28% |
| Thursday Night | 41°F | Mostly Cloudy | 8 mph NNW | 14% |
| Friday | 49°F | Partly Sunny | 3 to 8 mph N | 6% |
| Friday Night | 30°F | Partly Cloudy | 2 mph N | 0% |
| Saturday | 52°F | Mostly Sunny | 3 mph WSW | 1% |
| Saturday Night | 35°F | Mostly Clear | 5 mph WSW | 1% |
| Sunday | 59°F | Sunny | 5 mph W | 1% |
| Sunday Night | 37°F | Clear | 5 mph SW | 0% |
| Monday | 64°F | Sunny | 5 to 9 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 6 mph W | 0% |
| Tuesday | 64°F | Sunny | 5 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Derby (40.930, -93.457). Updated through the day.
Growing snapshot for Derby
Last spring frost
May 5
First fall frost
Oct 5
Growing season
151 days
Hardiness zone
5b
More local growing data for Derby: nearby ZIP 50068 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Chariton 1 E, Ia (10.8 mi from Derby). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.