Hannibal, MO Weather & Growing Conditions
Tonight
73°F
Mostly Clear
Mostly clear, with a low around 73. Southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Mostly Clear | 5 mph SE | 14% |
| Saturday | 93°F | Partly Sunny | 5 to 8 mph SW | 6% |
| Saturday Night | 70°F | Mostly Cloudy then Chance Showers And Thunderstorms | 3 mph SW | 33% |
| Sunday | 82°F | Showers And Thunderstorms Likely | 2 to 7 mph NW | 65% |
| Sunday Night | 63°F | Showers And Thunderstorms | 8 mph NE | 75% |
| Monday | 68°F | Showers And Thunderstorms | 9 mph NE | 75% |
| Monday Night | 57°F | Chance Showers And Thunderstorms | 9 mph NE | 48% |
| Tuesday | 65°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph NE | 20% |
| Tuesday Night | 52°F | Mostly Cloudy | 3 to 7 mph N | 5% |
| Wednesday | 68°F | Mostly Sunny | 6 mph N | 1% |
| Wednesday Night | 54°F | Partly Cloudy | 3 mph NE | 1% |
| Thursday | 71°F | Mostly Sunny | 5 mph NE | 6% |
| Thursday Night | 57°F | Partly Cloudy | 3 mph NE | 5% |
| Friday | 71°F | Mostly Sunny | 5 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hannibal, MO
Last spring frost
Apr 10
First fall frost
Oct 27
Growing season
199 days
Hardiness zone
6a
Explore more for Hannibal, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Hannibal Wtr Wks, Mo (5.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.