Royal, IA
Climate overview — based on NOAA 1991-2020 normals from SPENCER MUNI AP, IA US.
Year-round temperatures (°F)
Climate summary
Royal has an annual average temperature of 46.8°F with about 26.8 inches of precipitation per year. The warmest month is July (average high 84.5°F), and the coldest is January (average low 8.1°F). June is typically the wettest month (4.01 in) and January the driest (0.25 in).
Best time to visit Royal
Full guide →Climate change signal
All-time records →162 of 366 (44.3%) of Royal's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1990s | 34 | |
| 2000s | 106 | |
| 2010s | 103 | |
| 2020s | 123 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 25.8°F | 8.1°F | 16.9°F | 0.25 in | — | 4 |
| February | 30.3°F | 12.6°F | 21.4°F | 0.43 in | — | 4 |
| March | 43.6°F | 24.8°F | 34.2°F | 1.44 in | — | 6 |
| April | 58.9°F | 35.5°F | 47.2°F | 2.82 in | — | 10 |
| May | 70.9°F | 47.9°F | 59.4°F | 3.83 in | — | 13 |
| June | 80.9°F | 58.7°F | 69.8°F | 4.01 in | — | 12 |
| July | 84.5°F | 62.3°F | 73.4°F | 3.84 in | — | 9 |
| August | 81.9°F | 59.2°F | 70.6°F | 3.29 in | — | 11 |
| September | 75.8°F | 50.2°F | 63.0°F | 3.21 in | — | 9 |
| October | 61.3°F | 37.4°F | 49.4°F | 2.22 in | — | 8 |
| November | 44.6°F | 24.7°F | 34.6°F | 1.07 in | — | 5 |
| December | 30.7°F | 13.6°F | 22.2°F | 0.42 in | — | 5 |
Climate twins of Royal
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).