Hannibal, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hannibal, a city in Marion County, Missouri.
This Afternoon
71°F
Light Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 71, with temperatures falling to around 67 in the afternoon. South wind 13 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
7-day forecast for Hannibal
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Light Rain | 13 to 16 mph S | 99% |
| Tonight | 51°F | Chance Light Rain then Chance Rain Showers | 7 to 12 mph SW | 40% |
| Wednesday | 58°F | Chance Rain Showers then Mostly Cloudy | 8 to 13 mph SW | 12% |
| Wednesday Night | 44°F | Partly Cloudy | 7 mph SW | 0% |
| Thursday | 59°F | Mostly Sunny | 6 to 10 mph W | 7% |
| Thursday Night | 43°F | Mostly Cloudy | 6 mph NW | 11% |
| Friday | 55°F | Partly Sunny | 7 mph N | 5% |
| Friday Night | 38°F | Mostly Cloudy | 0 to 3 mph N | 2% |
| Saturday | 55°F | Partly Sunny | 2 mph NW | 2% |
| Saturday Night | 37°F | Mostly Clear | 2 mph W | 2% |
| Sunday | 61°F | Sunny | 2 to 6 mph W | 8% |
| Sunday Night | 38°F | Mostly Clear | 3 mph W | 2% |
| Monday | 65°F | Sunny | 3 to 7 mph SW | 2% |
| Monday Night | 42°F | Mostly Clear | 3 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Hannibal (39.710, -91.394). Updated through the day.
Growing snapshot for Hannibal
Last spring frost
Apr 10
First fall frost
Oct 27
Growing season
199 days
Hardiness zone
6a
More local growing data for Hannibal: nearby ZIP 63401 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Hannibal Wtr Wks, Mo (5.4 mi from Hannibal). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.