Hannibal, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hannibal, a city in Marion County, Missouri.
This Afternoon
91°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Sunny, with a high near 91. East wind around 2 mph. Chance of precipitation is 20%.
7-day forecast for Hannibal
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 91°F | Slight Chance Showers And Thunderstorms | 2 mph E | 15% |
| Tonight | 72°F | Mostly Clear | 5 mph SE | 14% |
| Saturday | 93°F | Partly Sunny | 7 mph SW | 7% |
| Saturday Night | 70°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 3 mph W | 32% |
| Sunday | 82°F | Showers And Thunderstorms Likely | 2 to 6 mph NW | 66% |
| Sunday Night | 62°F | Showers And Thunderstorms Likely | 5 to 8 mph NE | 74% |
| Monday | 68°F | Showers And Thunderstorms Likely | 5 to 8 mph NE | 74% |
| Monday Night | 57°F | Chance Showers And Thunderstorms | 7 mph NE | 48% |
| Tuesday | 65°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph NE | 21% |
| Tuesday Night | 52°F | Mostly Cloudy | 3 to 7 mph N | 5% |
| Wednesday | 69°F | Mostly Sunny | 5 mph N | 1% |
| Wednesday Night | 54°F | Partly Cloudy | 3 mph NE | 1% |
| Thursday | 71°F | Mostly Sunny | 3 mph NE | 6% |
| Thursday Night | 57°F | Partly Cloudy | 2 mph NE | 5% |
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 Sep 19, 2026.