Royal, IA Weather & Growing Conditions
Today
72°F
Patchy Smoke
Patchy smoke and showers and thunderstorms before 5pm, then patchy smoke and scattered showers and thunderstorms. Mostly cloudy, with a high near 72. North wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Patchy Smoke | 5 to 10 mph N | 82% |
| Tonight | 54°F | Patchy Smoke then Mostly Cloudy | 0 to 5 mph NNW | 51% |
| Wednesday | 76°F | Mostly Sunny | 0 to 5 mph ENE | 1% |
| Wednesday Night | 53°F | Mostly Clear | 5 mph SSE | 0% |
| Thursday | 82°F | Sunny | 5 to 10 mph S | 0% |
| Thursday Night | 60°F | Mostly Clear | 5 to 10 mph S | 4% |
| Friday | 86°F | Sunny | 5 to 15 mph SSW | 5% |
| Friday Night | 64°F | Slight Chance Showers And Thunderstorms | 5 to 15 mph S | 15% |
| Saturday | 89°F | Sunny | 5 to 15 mph S | 7% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 15 mph ESE | 24% |
| Sunday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SE | 24% |
| Sunday Night | 67°F | Partly Cloudy then Chance Showers And Thunderstorms | 10 to 15 mph ESE | 26% |
| Monday | 87°F | Chance Showers And Thunderstorms then Mostly Sunny | 15 mph E | 26% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph ENE | 28% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Royal, IA
Last spring frost
May 2
First fall frost
Oct 2
Growing season
154 days
Hardiness zone
5a
Explore more for Royal, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Spencer Muni Ap, Ia (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.