Irena, MO
Climate overview — based on NOAA 1991-2020 normals from GRANT CITY, MO US.
Year-round temperatures (°F)
Avg high
Avg low
Climate summary
Irena has an annual average temperature of 50.4°F with about 0 inches of precipitation per year. The warmest month is July (average high 85.1°F), and the coldest is January (average low 13.2°F).
Pleasant months
2 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
51.7°F
warmest to coldest month
Best time to visit Irena
Full guide →Climate change signal
All-time records →0 of 366 (0%) of Irena'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.
| 1890s | 0 | |
| 1900s | 18 | |
| 1910s | 75 | |
| 1920s | 21 | |
| 1930s | 84 | |
| 1940s | 27 | |
| 1950s | 33 | |
| 1960s | 21 | |
| 1970s | 20 | |
| 1980s | 36 | |
| 1990s | 14 | |
| 2000s | 17 |
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 | 33.0°F | 13.2°F | 23.1°F | in | — | — |
| February | 38.9°F | 17.0°F | 27.9°F | in | — | — |
| March | 51.2°F | 27.3°F | 39.2°F | in | — | — |
| April | 62.3°F | 38.2°F | 50.2°F | in | — | — |
| May | 71.9°F | 51.3°F | 61.6°F | in | — | — |
| June | 80.4°F | 60.2°F | 70.3°F | in | — | — |
| July | 85.1°F | 64.5°F | 74.8°F | in | — | — |
| August | 83.5°F | 62.7°F | 73.1°F | in | — | — |
| September | 76.8°F | 53.1°F | 65.0°F | in | — | — |
| October | 64.4°F | 41.3°F | 52.8°F | in | — | — |
| November | 50.1°F | 27.8°F | 38.9°F | in | — | — |
| December | 37.2°F | 17.9°F | 27.5°F | in | — | — |
Last spring / first fall frost
All-time recordsHottest, coldest, wettest
Planting calendarWhat to plant, and when