Hannibal, MO
Climate overview — based on NOAA 1991-2020 normals from HANNIBAL WTR WKS, MO US.
Year-round temperatures (°F)
Climate summary
Hannibal has an annual average temperature of 53°F with about 41.3 inches of precipitation per year. The warmest month is July (average high 85.7°F), and the coldest is January (average low 17.9°F). May is typically the wettest month (4.96 in) and January the driest (2.11 in).
Best time to visit Hannibal
Full guide →Climate change signal
All-time records →46 of 366 (12.6%) of Hannibal'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.
| 1930s | 94 | |
| 1940s | 25 | |
| 1950s | 51 | |
| 1960s | 22 | |
| 1970s | 32 | |
| 1980s | 35 | |
| 1990s | 17 | |
| 2000s | 23 | |
| 2010s | 35 | |
| 2020s | 32 |
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 | 34.6°F | 17.9°F | 26.3°F | 2.11 in | — | 8 |
| February | 39.6°F | 21.6°F | 30.6°F | 2.25 in | — | 8 |
| March | 51.4°F | 32.0°F | 41.7°F | 2.76 in | — | 10 |
| April | 63.7°F | 42.8°F | 53.2°F | 4.33 in | — | 11 |
| May | 73.3°F | 54.0°F | 63.6°F | 4.96 in | — | 13 |
| June | 82.1°F | 63.5°F | 72.8°F | 4.91 in | — | 10 |
| July | 85.7°F | 67.3°F | 76.5°F | 4.11 in | — | 8 |
| August | 84.4°F | 65.2°F | 74.8°F | 3.92 in | — | 8 |
| September | 77.9°F | 56.9°F | 67.4°F | 3.53 in | — | 8 |
| October | 65.7°F | 44.9°F | 55.3°F | 3.39 in | — | 9 |
| November | 51.5°F | 33.5°F | 42.5°F | 2.82 in | — | 8 |
| December | 39.3°F | 23.4°F | 31.4°F | 2.19 in | — | 8 |
Climate twins of Hannibal
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).