Record envelope, standing records and threshold days for Hannibal (USW00093994), Missouri, United States, with 41 years of record.
Key Facts for Hannibal
Hannibal (USW00093994) is a weather station in Missouri, United States at 39.68 latitude and -91.33 longitude, 163 m (535 ft) above sea level.
The station reports from 1908 to 1948, 41 years of record.
1,464 records set at Hannibal still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Hannibal set a daily record precipitation of 14.7 mm (0.6 in) on 28 December 1948.
About the Station
Location: Missouri, United States, 39.68 latitude, -91.33 longitude.
Elevation: 163 m (535 ft).
Period of record: 1908 to 1948, 41 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Hannibal. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Hannibal, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
25.0 C (77.0 F)
-28.9 C (-20.0 F)
n/a
n/a
Feb
26.1 C (79.0 F)
-26.7 C (-16.1 F)
n/a
n/a
Mar
31.7 C (89.1 F)
-21.1 C (-6.0 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-11.7 C (10.9 F)
n/a
n/a
May
40.0 C (104.0 F)
-0.6 C (30.9 F)
n/a
n/a
Jun
40.0 C (104.0 F)
6.1 C (43.0 F)
n/a
n/a
Jul
44.4 C (111.9 F)
10.0 C (50.0 F)
n/a
n/a
Aug
43.3 C (109.9 F)
5.0 C (41.0 F)
n/a
n/a
Sep
38.3 C (100.9 F)
-1.1 C (30.0 F)
n/a
n/a
Oct
35.0 C (95.0 F)
-10.6 C (12.9 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-18.3 C (-0.9 F)
n/a
n/a
Dec
22.2 C (72.0 F)
-26.7 C (-16.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Hannibal still stand. 1936 holds the most, with 99.
Standing records at Hannibal by the year they were set
Year set
Standing records
1908
20
1909
38
1910
44
1911
56
1912
38
1913
61
1914
39
1915
48
1916
25
1917
41
1918
28
1919
12
1920
27
1921
21
1922
22
1923
31
1924
50
1925
60
1926
24
1927
38
1928
48
1929
34
1930
52
1931
46
1932
40
1933
36
1934
60
1935
29
1936
99
1937
21
1938
31
1939
30
1940
40
1941
15
1942
23
1943
33
1944
22
1945
27
1946
23
1947
16
1948
16
All-Time Record Progression
1 new records
1 all-time records were set at Hannibal between 14 January 1940 and 14 January 1940. Each dot is a new record.
When Hannibal set new all-time records
Date
Kind
Detail
1940-01-14
Record snow depth
Record snow depth 30.5 cm (12.0 in)
Wettest Day of Each Month
Jun: 126.7 mm (5.0 in)
The wettest day on record for each calendar month at Hannibal. The most was 126.7 mm (5.0 in) on 19 June 1930.
Record daily precipitation for each month at Hannibal
Month
Record daily precipitation (mm)
Date
Jan
55.9 mm (2.2 in)
24 January 1938
Feb
40.9 mm (1.6 in)
26 February 1936
Mar
66.5 mm (2.6 in)
19 March 1927
Apr
75.9 mm (3.0 in)
3 April 1913
May
60.5 mm (2.4 in)
12 May 1933
Jun
126.7 mm (5.0 in)
19 June 1930
Jul
121.4 mm (4.8 in)
13 July 1937
Aug
92.5 mm (3.6 in)
1 August 1932
Sep
113.5 mm (4.5 in)
4 September 1926
Oct
101.6 mm (4.0 in)
17 October 1946
Nov
62.2 mm (2.4 in)
22 November 1931
Dec
54.1 mm (2.1 in)
22 December 1932
Period of Record Coverage
1908 to 1948
Complete yearUnder 90 percent of days
41 years of record at Hannibal, 1908 to 1948. Every year has data for at least 90 percent of its days.
Cooler than the station meanWarmer than the station mean
One stripe for each of 41 complete years at Hannibal, 1908 to 1948. Blue stripes are years cooler than the station's own mean of 12.2 C (53.9 F); red stripes are warmer. The coolest year was 1917, at 10.3 C (50.6 F), and the warmest was 1931, at 14.2 C (57.5 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Hannibal as warming stripes, 1908 to 1948
Year
Annual mean temperature
Difference from the station mean
1908
12.3 C
+0.17 C
1909
11.7 C
-0.49 C
1910
11.5 C
-0.64 C
1911
12.7 C
+0.57 C
1912
10.8 C
-1.32 C
1913
12.9 C
+0.74 C
1914
12.4 C
+0.27 C
1915
11.7 C
-0.50 C
1916
11.7 C
-0.44 C
1917
10.3 C
-1.83 C
1918
12.2 C
+0.03 C
1919
12.2 C
+0.07 C
1920
11.6 C
-0.58 C
1921
14.1 C
+1.99 C
1922
12.8 C
+0.69 C
1923
12.2 C
+0.05 C
1924
10.9 C
-1.24 C
1925
12.1 C
-0.01 C
1926
11.6 C
-0.59 C
1927
12.2 C
+0.07 C
1928
12.3 C
+0.12 C
1929
11.1 C
-1.05 C
1930
12.8 C
+0.69 C
1931
14.2 C
+2.03 C
1932
12.4 C
+0.26 C
1933
13.5 C
+1.39 C
1934
13.7 C
+1.58 C
1935
11.6 C
-0.52 C
1936
12.7 C
+0.51 C
1937
11.5 C
-0.63 C
1938
13.6 C
+1.49 C
1939
12.8 C
+0.61 C
1940
11.1 C
-1.09 C
1941
13.0 C
+0.85 C
1942
11.7 C
-0.43 C
1943
11.1 C
-1.06 C
1944
11.5 C
-0.69 C
1945
11.1 C
-1.05 C
1946
13.1 C
+0.93 C
1947
11.7 C
-0.48 C
1948
11.7 C
-0.46 C
The fitted trend in annual mean temperature here over 1908 to 1948 is 0.04 C (-0.21 to 0.29) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.4 to 0.5) per decade. The slope is a straight line fitted to 41 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Hannibal
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.04 C (-0.21 to 0.29) per decade
0.1 F (-0.4 to 0.5) per decade
1908 to 1948
41
Not clearly different from zero
Mean daily maximum
0.1 C (-0.2 to 0.4) per decade
0.2 F (-0.3 to 0.7) per decade
1908 to 1948
41
Not clearly different from zero
Mean daily minimum
-0.02 C (-0.27 to 0.23) per decade
-0.04 F (-0.49 to 0.42) per decade
1908 to 1948
41
Not clearly different from zero
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1908 to 1948
Yearly extremes at Hannibal: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
44.4 C (111.9 F)
1934
37.2 C (99.0 F)
41
Coldest night (TNn)
-28.9 C (-20.0 F)
1912
-22.2 C (-8.0 F)
41
Wettest day (Rx1day)
126.7 mm (5.0 in)
1930
62.5 mm (2.5 in)
41
Wettest five days (Rx5day)
220.0 mm (8.7 in)
1916
100.5 mm (4.0 in)
41
Longest dry spell (CDD)
42 days
1919
23 days
41
Hottest day (TXx)
The hottest day of the year at Hannibal, 1908 to 1948. The record is 44.4 C (111.9 F) in 1934, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Hannibal by year
Year
Hottest day (TXx)
1908
35.0 C (95.0 F)
1909
36.7 C (98.1 F)
1910
35.0 C (95.0 F)
1911
40.0 C (104.0 F)
1912
36.1 C (97.0 F)
1913
39.4 C (102.9 F)
1914
38.3 C (100.9 F)
1915
33.3 C (91.9 F)
1916
38.3 C (100.9 F)
1917
38.9 C (102.0 F)
1918
42.2 C (108.0 F)
1919
37.2 C (99.0 F)
1920
36.7 C (98.1 F)
1921
36.7 C (98.1 F)
1922
37.8 C (100.0 F)
1923
36.7 C (98.1 F)
1924
36.1 C (97.0 F)
1925
37.8 C (100.0 F)
1926
37.2 C (99.0 F)
1927
35.6 C (96.1 F)
1928
35.0 C (95.0 F)
1929
36.7 C (98.1 F)
1930
41.1 C (106.0 F)
1931
38.9 C (102.0 F)
1932
37.8 C (100.0 F)
1933
37.8 C (100.0 F)
1934
44.4 C (111.9 F)
1935
35.6 C (96.1 F)
1936
42.8 C (109.0 F)
1937
37.2 C (99.0 F)
1938
36.7 C (98.1 F)
1939
36.1 C (97.0 F)
1940
38.9 C (102.0 F)
1941
39.4 C (102.9 F)
1942
35.0 C (95.0 F)
1943
37.8 C (100.0 F)
1944
37.8 C (100.0 F)
1945
36.7 C (98.1 F)
1946
36.7 C (98.1 F)
1947
39.4 C (102.9 F)
1948
36.1 C (97.0 F)
Coldest night (TNn)
The coldest night of the year at Hannibal, 1908 to 1948. The record is -28.9 C (-20.0 F) in 1912, marked on the chart; the median year is -22.2 C (-8.0 F).
Coldest night (TNn) at Hannibal by year
Year
Coldest night (TNn)
1908
-18.3 C (-0.9 F)
1909
-21.7 C (-7.1 F)
1910
-20.0 C (-4.0 F)
1911
-22.2 C (-8.0 F)
1912
-28.9 C (-20.0 F)
1913
-18.3 C (-0.9 F)
1914
-22.2 C (-8.0 F)
1915
-26.7 C (-16.1 F)
1916
-25.0 C (-13.0 F)
1917
-26.7 C (-16.1 F)
1918
-28.9 C (-20.0 F)
1919
-24.4 C (-11.9 F)
1920
-17.8 C (0.0 F)
1921
-15.0 C (5.0 F)
1922
-17.2 C (1.0 F)
1923
-18.9 C (-2.0 F)
1924
-26.7 C (-16.1 F)
1925
-20.6 C (-5.1 F)
1926
-20.6 C (-5.1 F)
1927
-26.7 C (-16.1 F)
1928
-25.6 C (-14.1 F)
1929
-21.1 C (-6.0 F)
1930
-27.2 C (-17.0 F)
1931
-14.4 C (6.1 F)
1932
-24.4 C (-11.9 F)
1933
-23.9 C (-11.0 F)
1934
-23.3 C (-9.9 F)
1935
-22.2 C (-8.0 F)
1936
-27.2 C (-17.0 F)
1937
-19.4 C (-2.9 F)
1938
-18.3 C (-0.9 F)
1939
-18.9 C (-2.0 F)
1940
-27.2 C (-17.0 F)
1941
-16.1 C (3.0 F)
1942
-22.8 C (-9.0 F)
1943
-25.6 C (-14.1 F)
1944
-24.4 C (-11.9 F)
1945
-22.2 C (-8.0 F)
1946
-17.2 C (1.0 F)
1947
-23.3 C (-9.9 F)
1948
-22.2 C (-8.0 F)
Wettest day (Rx1day)
The wettest day of the year at Hannibal, 1908 to 1948. The record is 126.7 mm (5.0 in) in 1930, marked on the chart; the median year is 62.5 mm (2.5 in).
Wettest day (Rx1day) at Hannibal by year
Year
Wettest day (Rx1day)
1908
41.9 mm (1.6 in)
1909
64.3 mm (2.5 in)
1910
118.4 mm (4.7 in)
1911
64.5 mm (2.5 in)
1912
50.8 mm (2.0 in)
1913
75.9 mm (3.0 in)
1914
62.5 mm (2.5 in)
1915
58.2 mm (2.3 in)
1916
81.0 mm (3.2 in)
1917
51.1 mm (2.0 in)
1918
68.6 mm (2.7 in)
1919
40.4 mm (1.6 in)
1920
44.7 mm (1.8 in)
1921
47.5 mm (1.9 in)
1922
37.8 mm (1.5 in)
1923
69.6 mm (2.7 in)
1924
43.2 mm (1.7 in)
1925
50.0 mm (2.0 in)
1926
113.5 mm (4.5 in)
1927
66.5 mm (2.6 in)
1928
48.0 mm (1.9 in)
1929
49.5 mm (1.9 in)
1930
126.7 mm (5.0 in)
1931
70.4 mm (2.8 in)
1932
92.5 mm (3.6 in)
1933
60.5 mm (2.4 in)
1934
46.0 mm (1.8 in)
1935
60.5 mm (2.4 in)
1936
51.1 mm (2.0 in)
1937
121.4 mm (4.8 in)
1938
62.0 mm (2.4 in)
1939
81.0 mm (3.2 in)
1940
75.9 mm (3.0 in)
1941
104.1 mm (4.1 in)
1942
41.9 mm (1.6 in)
1943
90.7 mm (3.6 in)
1944
61.0 mm (2.4 in)
1945
86.4 mm (3.4 in)
1946
101.6 mm (4.0 in)
1947
87.9 mm (3.5 in)
1948
44.7 mm (1.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Hannibal, 1908 to 1948. The record is 220.0 mm (8.7 in) in 1916, marked on the chart; the median year is 100.5 mm (4.0 in).
Wettest five days (Rx5day) at Hannibal by year
Year
Wettest five days (Rx5day)
1908
68.1 mm (2.7 in)
1909
92.8 mm (3.7 in)
1910
146.9 mm (5.8 in)
1911
106.7 mm (4.2 in)
1912
59.2 mm (2.3 in)
1913
78.4 mm (3.1 in)
1914
133.6 mm (5.3 in)
1915
96.8 mm (3.8 in)
1916
220.0 mm (8.7 in)
1917
109.9 mm (4.3 in)
1918
137.2 mm (5.4 in)
1919
72.8 mm (2.9 in)
1920
86.9 mm (3.4 in)
1921
69.0 mm (2.7 in)
1922
76.2 mm (3.0 in)
1923
110.6 mm (4.4 in)
1924
59.4 mm (2.3 in)
1925
77.9 mm (3.1 in)
1926
183.8 mm (7.2 in)
1927
91.7 mm (3.6 in)
1928
100.5 mm (4.0 in)
1929
83.1 mm (3.3 in)
1930
148.5 mm (5.8 in)
1931
105.7 mm (4.2 in)
1932
118.5 mm (4.7 in)
1933
95.3 mm (3.8 in)
1934
66.8 mm (2.6 in)
1935
111.3 mm (4.4 in)
1936
95.8 mm (3.8 in)
1937
196.5 mm (7.7 in)
1938
115.2 mm (4.5 in)
1939
150.1 mm (5.9 in)
1940
77.0 mm (3.0 in)
1941
140.9 mm (5.5 in)
1942
93.2 mm (3.7 in)
1943
129.0 mm (5.1 in)
1944
82.6 mm (3.3 in)
1945
142.0 mm (5.6 in)
1946
106.5 mm (4.2 in)
1947
113.3 mm (4.5 in)
1948
76.4 mm (3.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Hannibal, 1908 to 1948. The record is 42 days in 1919, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Hannibal by year
Year
Longest dry spell (CDD)
1908
24 days
1909
19 days
1910
31 days
1911
18 days
1912
18 days
1913
25 days
1914
23 days
1915
23 days
1916
34 days
1917
26 days
1918
14 days
1919
42 days
1920
27 days
1921
16 days
1922
22 days
1923
15 days
1924
21 days
1925
22 days
1926
21 days
1927
20 days
1928
19 days
1929
20 days
1930
30 days
1931
20 days
1932
17 days
1933
26 days
1934
26 days
1935
16 days
1936
23 days
1937
20 days
1938
22 days
1939
26 days
1940
25 days
1941
18 days
1942
29 days
1943
28 days
1944
30 days
1945
27 days
1946
31 days
1947
29 days
1948
24 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
41 years with a frost
Across 41 years with a frost, the median last spring frost at Hannibal falls on 11 April and the median first autumn frost on 23 October, which leaves a median of 194 days between them.
Fitted over all years, the growing season changes by +0.4 days per decade at this station.
Frost dates and growing season at Hannibal
Measure
Median, all years
Earliest period
Recent period (1919 to 1948)
Recent against earliest
Fitted trend
Last spring frost
11 April
n/a
12 April
n/a
-0.7 days per decade
First autumn frost
23 October
n/a
23 October
n/a
-0.3 days per decade
Growing days
194 days
n/a
193 days
n/a
+0.4 days per decade
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
41 years, 1908 to 1948
A day with at least 63.3 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 158.1 mm (6.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Hannibal: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
63.3 mm (2.5 in)
5 years
85.3 mm (3.4 in)
10 years
101.1 mm (4.0 in)
25 years
122.7 mm (4.8 in)
50 years
139.9 mm (5.5 in)
Longer than the 41 years of record
100 years
158.1 mm (6.2 in)
Longer than the 41 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 41 years of values from 1908 to 1948.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 126.7 mm (5.0 in) in 1930; 121.4 mm (4.8 in) in 1937; 118.4 mm (4.7 in) in 1910.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Hannibal, at 1939. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1939 ran 0.3 C (0.5 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Hannibal, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1939
-0.3
-0.5
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Hannibal standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hannibal threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Records are computed by this site and are not official.