Royal, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Royal, a city in Clay County, Iowa.
Overnight
63°F
Areas Of Fog
Areas of fog before 5am, then areas of fog and a chance of showers and thunderstorms. Cloudy. Low around 63, with temperatures rising to around 66 overnight. Northeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Royal
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Areas Of Fog | 5 mph NE | 26% |
| Saturday | 69°F | Areas Of Fog then Mostly Cloudy | 5 to 15 mph N | 34% |
| Saturday Night | 56°F | Patchy Fog then Cloudy | 10 to 15 mph N | 15% |
| Sunday | 66°F | Mostly Cloudy | 15 mph NE | 13% |
| Sunday Night | 52°F | Chance Rain Showers | 10 to 15 mph ENE | 49% |
| Monday | 61°F | Rain Showers Likely | 10 mph ENE | 55% |
| Monday Night | 46°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph ENE | 38% |
| Tuesday | 62°F | Partly Sunny | 5 to 10 mph E | 7% |
| Tuesday Night | 43°F | Partly Cloudy | 5 mph ESE | 1% |
| Wednesday | 66°F | Mostly Sunny | 5 to 10 mph SE | 2% |
| Wednesday Night | 48°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph SE | 17% |
| Thursday | 67°F | Slight Chance Rain Showers | 5 to 10 mph SE | 19% |
| Thursday Night | 52°F | Mostly Cloudy | 5 mph SE | 13% |
| Friday | 70°F | Partly Sunny | 5 to 10 mph SE | 13% |
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.