Hannibal, MO Weather & Growing Conditions
This Afternoon
71°F
Light Rain Likely
Rain likely and a slight chance of thunderstorms. Cloudy. High near 71, with temperatures falling to around 66 in the afternoon. South wind around 16 mph, with gusts as high as 31 mph. Chance of precipitation is 70%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Light Rain Likely | 16 mph S | 71% |
| Tonight | 51°F | Chance Light Rain then Chance Rain Showers | 8 to 13 mph SW | 36% |
| Wednesday | 58°F | Chance Rain Showers then Cloudy | 10 to 14 mph SW | 12% |
| Wednesday Night | 44°F | Partly Cloudy | 8 mph SW | 0% |
| Thursday | 59°F | Mostly Sunny | 7 to 10 mph W | 7% |
| Thursday Night | 43°F | Mostly Cloudy | 6 mph NW | 11% |
| Friday | 55°F | Partly Sunny | 8 mph N | 4% |
| Friday Night | 38°F | Partly Cloudy | 1 to 5 mph N | 2% |
| Saturday | 55°F | Partly Sunny | 3 mph NW | 1% |
| Saturday Night | 37°F | Mostly Clear | 0 to 3 mph W | 3% |
| Sunday | 61°F | Sunny | 6 mph W | 8% |
| Sunday Night | 38°F | Mostly Clear | 3 mph W | 2% |
| Monday | 65°F | Sunny | 3 to 8 mph SW | 2% |
| Monday Night | 42°F | Mostly Clear | 5 mph SW | 0% |
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 Nov 3, 2026.