Royal, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Royal, a city in Clay County, Iowa.
Tonight
40°F
Rain Showers
Rain showers. Cloudy, with a low around 40. Northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Royal
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 40°F | Rain Showers | 15 to 20 mph NW | 88% |
| Wednesday | 47°F | Rain Showers | 15 mph WNW | 91% |
| Wednesday Night | 37°F | Rain Showers Likely | 15 mph NW | 72% |
| Thursday | 47°F | Chance Rain Showers | 15 mph NNW | 42% |
| Thursday Night | 33°F | Mostly Cloudy | 5 to 10 mph N | 6% |
| Friday | 47°F | Partly Sunny | 0 to 5 mph NNE | 0% |
| Friday Night | 30°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 54°F | Mostly Sunny | 0 to 10 mph SW | 2% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 5% |
| Sunday | 59°F | Sunny | 5 to 10 mph W | 4% |
| Sunday Night | 37°F | Mostly Clear | 5 to 10 mph SSW | 1% |
| Monday | 61°F | Sunny | 10 mph WSW | 0% |
| Monday Night | 37°F | Mostly Clear | 5 to 10 mph NW | 0% |
| Tuesday | 58°F | Mostly Sunny | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Royal (43.064, -95.284). Updated through the day.
Growing snapshot for Royal
Last spring frost
May 2
First fall frost
Oct 2
Growing season
154 days
Hardiness zone
5a
More local growing data for Royal: nearby ZIP 51357 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Spencer Muni Ap, Ia (8.3 mi from Royal). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.