Hannibal climate — normals and trends
Hannibal (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.0 °C and it receives 933 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (25.3 °C on average) and the coldest is January (-2.8 °C). Rainfall peaks in May.
Hannibal averages 100 frost days, 49 hot days (≥ 30 °C) and 108 rainy days per year.
Hannibal has warmed by +1.6 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 112 to 88 per year over the period.
The hottest day of the period reached 41.0 °C (on 14 July 1954) and the coldest -29.6 °C (on 10 January 1942).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
HannibalMissouri
- coords
- 39.71°, -91.36°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.0°C
Average daily high
17.0°C
Average daily low
7.3°C
Annual rainfall
933mm
Sunshine / day
9.0h
Mean relative humidity
68%
Average peak wind
17.5km/h
Seasonal range
28.1°C
Frost days (< 0 °C)
100 d/yr
Hot days (≥ 30 °C)
49 d/yr
Rainy days (≥ 1 mm)
108 d/yr
Annual snowfall
49.7 cm
Average feels-like high
15.7 °C
Average feels-like low
4.9 °C
Average peak gust
36.9 km/h
Tropical nights (≥ 20 °C)
51 d/yr
Solar radiation
15.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.28 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
41.0 °C
14 July 1954
Coldest day
-29.6 °C
10 January 1942
Wettest day
111 mm
3 October 1986
Windiest day
52.0 km/h
27 March 1991
Strongest gust
96.1 km/h
31 October 1979
Hottest feels-like
45.2 °C
13 July 1995
Coldest feels-like
-35.8 °C
20 January 1985
Snowiest day
27.0 cm
1 February 2011
Sunniest day
14.2 h
1 July 2025
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 0.5 °C | -1.1 °C | 26 mm | -22 mm |
| Feb | 3.8 °C | -0.6 °C | 14 mm | -38 mm |
| Mar | 16.4 °C | +5.9 °C | 96 mm | +11 mm |
| Apr | 19.0 °C | +1.4 °C | 113 mm | +7 mm |
| May | 23.1 °C | +0.1 °C | 61 mm | -49 mm |
| Jun | 28.8 °C | +0.7 °C | 133 mm | +37 mm |
| Jul | 31.1 °C | +0.9 °C | 180 mm | +97 mm |
| Aug | 28.8 °C | -0.5 °C | 26 mm | -50 mm |
| Sep | 28.2 °C | +2.7 °C | 33 mm | -45 mm |
| Oct | 22.0 °C | +2.9 °C | 44 mm | -30 mm |
| Nov | 12.3 °C | +1.5 °C | 72 mm | +3 mm |
| Dec | 5.2 °C | +1.1 °C | 49 mm | -7 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Hannibal?
Hannibal has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 12.0 °C and it receives 933 mm of precipitation per year.
What is the hottest day ever recorded in Hannibal?
The hottest day measured in Hannibal between 1940 and 2025 was 14 July 1954, reaching 41.0 °C.
What is the coldest day in Hannibal?
The coldest day measured in Hannibal between 1940 and 2025 was 10 January 1942, at -29.6 °C.
Does it snow in Hannibal?
Yes. Hannibal gets on average 49.7 cm of snow per year and has around 100 frost days.
Has the climate of Hannibal warmed?
Yes: Hannibal warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hannibal?
The wettest day measured in Hannibal between 1940 and 2025 was 3 October 1986, with 111 mm of rain in 24 hours.
What was the windiest day in Hannibal?
The windiest day measured in Hannibal between 1940 and 2025 was 27 March 1991, with winds reaching 52.0 km/h.
What is the warmest month in Hannibal?
The warmest month in Hannibal is July (25.3 °C on average); the coldest is January (-2.8 °C).
How much does it rain in Hannibal?
Hannibal receives on average 933 mm of precipitation per year, spread over about 108 rainy days.
Is it sunny in Hannibal?
Hannibal gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Hannibal?
The heaviest 24-hour snowfall measured in Hannibal between 1940 and 2025 was 1 February 2011, with 27.0 cm.
Are there tropical nights in Hannibal?
Yes: Hannibal has on average 51 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hannibal?
In Hannibal, between 1940 and 2025, the highest apparent temperature reached 45.2 °C on 13 July 1995, and the lowest was -35.8 °C on 20 January 1985.
Compare Hannibal with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hannibal