Royal, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Royal, a city in Clay County, Iowa.
Tonight
63°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before midnight, then patchy fog and a chance of showers and thunderstorms between 1am and 4am, then areas of fog and a chance of showers and thunderstorms between 4am and 5am, then patchy fog and a chance of showers and thunderstorms. Cloudy, with a low around 63. Northeast wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Royal
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 63°F | Chance Showers And Thunderstorms | 5 mph NE | 35% |
| Saturday | 71°F | Areas Of Fog | 5 to 10 mph N | 31% |
| Saturday Night | 56°F | Slight Chance Rain Showers then Cloudy | 10 to 15 mph NNE | 20% |
| Sunday | 66°F | Slight Chance Rain Showers | 15 mph NE | 21% |
| Sunday Night | 51°F | Rain Showers Likely | 10 to 15 mph ENE | 55% |
| Monday | 60°F | Rain Showers Likely | 10 to 15 mph ENE | 56% |
| Monday Night | 47°F | Chance Rain Showers | 5 to 10 mph ENE | 40% |
| Tuesday | 61°F | Partly Sunny | 5 to 10 mph E | 12% |
| Tuesday Night | 45°F | Partly Cloudy | 5 mph ESE | 0% |
| Wednesday | 65°F | Mostly Sunny | 5 to 10 mph SE | 4% |
| Wednesday Night | 49°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph SE | 22% |
| Thursday | 68°F | Slight Chance Rain Showers | 5 mph SSE | 23% |
| Thursday Night | 52°F | Mostly Cloudy | 5 mph SSE | 12% |
| Friday | 69°F | Partly Sunny | 5 to 10 mph SE | 12% |
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 Sep 19, 2026.