Record envelope, standing records and threshold days for Mt Vernon 3 SW (USC00235861), Missouri, United States, with 76 years of record.
Key Facts for Mt Vernon 3 SW
Mt Vernon 3 SW (USC00235861) is a weather station in Missouri, United States at 37.07 latitude and -93.87 longitude, 354 m (1,161 ft) above sea level.
The station reports from 1893 to 1968, 76 years of record.
1,464 records set at Mt Vernon 3 SW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Mt Vernon 3 SW set a daily record precipitation of 34.3 mm (1.4 in) on 11 August 1968.
About the Station
Location: Missouri, United States, 37.07 latitude, -93.87 longitude.
Elevation: 354 m (1,161 ft).
Period of record: 1893 to 1968, 76 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 Mt Vernon 3 SW. 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 Mt Vernon 3 SW, 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)
-30.0 C (-22.0 F)
n/a
n/a
Feb
30.0 C (86.0 F)
-32.2 C (-26.0 F)
n/a
n/a
Mar
32.8 C (91.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-10.6 C (12.9 F)
n/a
n/a
May
35.6 C (96.1 F)
-3.3 C (26.1 F)
n/a
n/a
Jun
40.0 C (104.0 F)
4.4 C (39.9 F)
n/a
n/a
Jul
45.6 C (114.1 F)
3.9 C (39.0 F)
n/a
n/a
Aug
41.1 C (106.0 F)
4.4 C (39.9 F)
n/a
n/a
Sep
41.1 C (106.0 F)
-2.8 C (27.0 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-8.3 C (17.1 F)
n/a
n/a
Nov
29.4 C (84.9 F)
-15.6 C (3.9 F)
n/a
n/a
Dec
25.6 C (78.1 F)
-25.6 C (-14.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Mt Vernon 3 SW still stand. 1901 holds the most, with 57.
Standing records at Mt Vernon 3 SW by the year they were set
Year set
Standing records
1893
4
1894
44
1895
50
1896
44
1897
48
1898
28
1899
47
1900
18
1901
57
1902
35
1903
26
1904
18
1905
24
1906
10
1907
44
1908
25
1909
28
1910
16
1911
54
1912
28
1913
30
1914
28
1915
9
1916
3
1917
23
1918
7
1937
11
1938
24
1939
28
1940
32
1941
18
1942
17
1943
30
1944
12
1945
16
1946
18
1947
17
1948
9
1949
20
1950
38
1951
21
1952
30
1953
34
1954
37
1955
21
1956
26
1957
12
1958
16
1959
13
1960
27
1961
20
1962
29
1963
27
1964
18
1965
22
1966
28
1967
32
1968
13
All-Time Record Progression
4 new records
4 all-time records were set at Mt Vernon 3 SW between 26 August 1950 and 18 July 1954. Each dot is a new record.
When Mt Vernon 3 SW set new all-time records
Date
Kind
Detail
1950-08-26
Record daily precipitation
Record daily precipitation 190.0 mm (7.5 in)
1954-07-13
Record high maximum temperature
Record high maximum temperature 44.4 C (111.9 F)
1954-07-14
Record high maximum temperature
Record high maximum temperature 45.6 C (114.1 F)
1954-07-18
Record high minimum temperature
Record high minimum temperature 27.8 C (82.0 F)
Wettest Day of Each Month
Aug: 190.0 mm (7.5 in)
The wettest day on record for each calendar month at Mt Vernon 3 SW. The most was 190.0 mm (7.5 in) on 26 August 1950.
Record daily precipitation for each month at Mt Vernon 3 SW
Month
Record daily precipitation (mm)
Date
Jan
102.6 mm (4.0 in)
20 January 1904
Feb
69.9 mm (2.8 in)
18 February 1908
Mar
139.7 mm (5.5 in)
11 March 1902
Apr
119.4 mm (4.7 in)
19 April 1941
May
184.2 mm (7.3 in)
18 May 1943
Jun
107.7 mm (4.2 in)
14 June 1899
Jul
103.6 mm (4.1 in)
29 July 1946
Aug
190.0 mm (7.5 in)
26 August 1950
Sep
134.1 mm (5.3 in)
22 September 1893
Oct
108.0 mm (4.3 in)
21 October 1949
Nov
139.7 mm (5.5 in)
12 November 1909
Dec
132.1 mm (5.2 in)
18 December 1895
Period of Record Coverage
1893 to 1968
Complete yearUnder 90 percent of days
58 years of record at Mt Vernon 3 SW, 1893 to 1968. 13 years have data for under 90 percent of days and are left out of rankings: 1893, 1906, 1910, 1915, 1916, 1917, 1918, 1937 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 40 complete years at Mt Vernon 3 SW, 1894 to 1967. Blue stripes are years cooler than the station's own mean of 14.0 C (57.1 F); red stripes are warmer. The coolest year was 1895, at 11.2 C (52.1 F), and the warmest was 1938, at 15.8 C (60.5 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Mt Vernon 3 SW as warming stripes, 1894 to 1967
Year
Annual mean temperature
Difference from the station mean
1894
13.4 C
-0.58 C
1895
11.2 C
-2.80 C
1896
12.8 C
-1.20 C
1898
14.5 C
+0.52 C
1899
14.4 C
+0.47 C
1900
14.7 C
+0.76 C
1901
14.8 C
+0.85 C
1902
14.1 C
+0.10 C
1903
12.9 C
-1.03 C
1907
14.0 C
+0.06 C
1908
14.9 C
+0.96 C
1909
14.1 C
+0.18 C
1911
14.6 C
+0.65 C
1913
14.0 C
+0.04 C
1914
13.9 C
-0.09 C
1938
15.8 C
+1.88 C
1939
15.1 C
+1.09 C
1940
13.2 C
-0.79 C
1941
14.9 C
+0.97 C
1946
15.5 C
+1.55 C
1947
14.4 C
+0.40 C
1949
13.8 C
-0.15 C
1950
13.0 C
-1.00 C
1951
13.0 C
-0.98 C
1952
14.2 C
+0.25 C
1953
14.9 C
+0.97 C
1954
15.5 C
+1.54 C
1955
14.0 C
+0.04 C
1956
14.5 C
+0.52 C
1957
13.8 C
-0.12 C
1958
12.8 C
-1.15 C
1959
13.7 C
-0.31 C
1960
13.2 C
-0.77 C
1961
13.0 C
-0.97 C
1962
13.4 C
-0.61 C
1963
14.0 C
+0.02 C
1964
14.2 C
+0.22 C
1965
14.2 C
+0.27 C
1966
13.0 C
-1.01 C
1967
13.2 C
-0.75 C
The fitted trend in annual mean temperature here over 1894 to 1967 is 0.0 C (-0.1 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.0 F (-0.2 to 0.2) per decade. The slope is a straight line fitted to 40 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Mt Vernon 3 SW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.0 C (-0.1 to 0.1) per decade
0.0 F (-0.2 to 0.2) per decade
1894 to 1967
40
Not clearly different from zero
Mean daily maximum
-0.03 C (-0.17 to 0.10) per decade
-0.1 F (-0.3 to 0.2) per decade
1894 to 1967
40
Not clearly different from zero
Mean daily minimum
0.03 C (-0.08 to 0.14) per decade
0.1 F (-0.1 to 0.3) per decade
1894 to 1967
40
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
1893 to 1968
Yearly extremes at Mt Vernon 3 SW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.6 C (114.1 F)
1954
38.3 C (100.9 F)
58
Coldest night (TNn)
-32.2 C (-26.0 F)
1905
-19.7 C (-3.5 F)
58
Wettest day (Rx1day)
190.0 mm (7.5 in)
1950
77.2 mm (3.0 in)
58
Wettest five days (Rx5day)
318.0 mm (12.5 in)
1943
108.2 mm (4.3 in)
58
Longest dry spell (CDD)
58 days
1901
24 days
58
Hottest day (TXx)
The hottest day of the year at Mt Vernon 3 SW, 1893 to 1968. The record is 45.6 C (114.1 F) in 1954, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at Mt Vernon 3 SW by year
Year
Hottest day (TXx)
1893
31.1 C (88.0 F)
1894
38.9 C (102.0 F)
1895
35.0 C (95.0 F)
1896
41.1 C (106.0 F)
1897
40.6 C (105.1 F)
1898
37.2 C (99.0 F)
1899
40.6 C (105.1 F)
1900
39.4 C (102.9 F)
1901
43.9 C (111.0 F)
1902
37.8 C (100.0 F)
1903
38.3 C (100.9 F)
1904
34.4 C (93.9 F)
1905
36.7 C (98.1 F)
1906
33.9 C (93.0 F)
1907
40.6 C (105.1 F)
1908
37.8 C (100.0 F)
1909
41.1 C (106.0 F)
1910
37.2 C (99.0 F)
1911
38.3 C (100.9 F)
1912
38.3 C (100.9 F)
1913
40.0 C (104.0 F)
1914
39.4 C (102.9 F)
1915
36.7 C (98.1 F)
1916
22.8 C (73.0 F)
1917
34.4 C (93.9 F)
1918
12.2 C (54.0 F)
1937
32.2 C (90.0 F)
1938
40.6 C (105.1 F)
1939
41.1 C (106.0 F)
1940
37.8 C (100.0 F)
1941
37.8 C (100.0 F)
1942
38.3 C (100.9 F)
1943
39.4 C (102.9 F)
1944
37.8 C (100.0 F)
1945
38.3 C (100.9 F)
1946
39.4 C (102.9 F)
1947
41.1 C (106.0 F)
1948
25.6 C (78.1 F)
1949
35.0 C (95.0 F)
1950
35.6 C (96.1 F)
1951
38.9 C (102.0 F)
1952
40.0 C (104.0 F)
1953
39.4 C (102.9 F)
1954
45.6 C (114.1 F)
1955
36.7 C (98.1 F)
1956
39.4 C (102.9 F)
1957
38.3 C (100.9 F)
1958
36.1 C (97.0 F)
1959
35.6 C (96.1 F)
1960
37.8 C (100.0 F)
1961
35.6 C (96.1 F)
1962
38.9 C (102.0 F)
1963
40.0 C (104.0 F)
1964
41.1 C (106.0 F)
1965
37.2 C (99.0 F)
1966
39.4 C (102.9 F)
1967
35.6 C (96.1 F)
1968
36.1 C (97.0 F)
Coldest night (TNn)
The coldest night of the year at Mt Vernon 3 SW, 1893 to 1968. The record is -32.2 C (-26.0 F) in 1905, marked on the chart; the median year is -19.7 C (-3.5 F).
Coldest night (TNn) at Mt Vernon 3 SW by year
Year
Coldest night (TNn)
1893
-10.0 C (14.0 F)
1894
-30.0 C (-22.0 F)
1895
-29.4 C (-20.9 F)
1896
-17.2 C (1.0 F)
1897
-21.1 C (-6.0 F)
1898
-23.3 C (-9.9 F)
1899
-31.7 C (-25.1 F)
1900
-21.1 C (-6.0 F)
1901
-21.7 C (-7.1 F)
1902
-18.9 C (-2.0 F)
1903
-21.1 C (-6.0 F)
1904
-22.8 C (-9.0 F)
1905
-32.2 C (-26.0 F)
1906
-20.6 C (-5.1 F)
1907
-16.7 C (1.9 F)
1908
-14.4 C (6.1 F)
1909
-20.0 C (-4.0 F)
1910
-26.1 C (-15.0 F)
1911
-21.1 C (-6.0 F)
1912
-26.7 C (-16.1 F)
1913
-19.4 C (-2.9 F)
1914
-18.9 C (-2.0 F)
1915
-15.0 C (5.0 F)
1916
-21.7 C (-7.1 F)
1917
-25.6 C (-14.1 F)
1918
-27.8 C (-18.0 F)
1937
-16.1 C (3.0 F)
1938
-15.0 C (5.0 F)
1939
-16.1 C (3.0 F)
1940
-23.9 C (-11.0 F)
1941
-14.4 C (6.1 F)
1942
-20.0 C (-4.0 F)
1943
-25.6 C (-14.1 F)
1944
-16.7 C (1.9 F)
1945
-21.7 C (-7.1 F)
1946
-15.0 C (5.0 F)
1947
-17.8 C (0.0 F)
1948
-18.3 C (-0.9 F)
1949
-18.9 C (-2.0 F)
1950
-18.3 C (-0.9 F)
1951
-21.7 C (-7.1 F)
1952
-12.2 C (10.0 F)
1953
-14.4 C (6.1 F)
1954
-13.9 C (7.0 F)
1955
-16.1 C (3.0 F)
1956
-15.0 C (5.0 F)
1957
-15.6 C (3.9 F)
1958
-22.2 C (-8.0 F)
1959
-22.2 C (-8.0 F)
1960
-17.8 C (0.0 F)
1961
-17.2 C (1.0 F)
1962
-22.8 C (-9.0 F)
1963
-24.4 C (-11.9 F)
1964
-18.9 C (-2.0 F)
1965
-18.3 C (-0.9 F)
1966
-25.0 C (-13.0 F)
1967
-15.0 C (5.0 F)
1968
-21.7 C (-7.1 F)
Wettest day (Rx1day)
The wettest day of the year at Mt Vernon 3 SW, 1893 to 1968. The record is 190.0 mm (7.5 in) in 1950, marked on the chart; the median year is 77.2 mm (3.0 in).
Wettest day (Rx1day) at Mt Vernon 3 SW by year
Year
Wettest day (Rx1day)
1893
134.1 mm (5.3 in)
1894
88.9 mm (3.5 in)
1895
132.1 mm (5.2 in)
1896
55.9 mm (2.2 in)
1897
102.4 mm (4.0 in)
1898
77.2 mm (3.0 in)
1899
107.7 mm (4.2 in)
1900
74.2 mm (2.9 in)
1901
77.2 mm (3.0 in)
1902
139.7 mm (5.5 in)
1903
50.8 mm (2.0 in)
1904
102.6 mm (4.0 in)
1905
86.4 mm (3.4 in)
1906
76.2 mm (3.0 in)
1907
92.2 mm (3.6 in)
1908
69.9 mm (2.8 in)
1909
139.7 mm (5.5 in)
1910
53.3 mm (2.1 in)
1911
101.6 mm (4.0 in)
1912
101.6 mm (4.0 in)
1913
79.2 mm (3.1 in)
1914
62.2 mm (2.4 in)
1915
67.3 mm (2.6 in)
1916
58.4 mm (2.3 in)
1917
104.9 mm (4.1 in)
1918
6.4 mm (0.25 in)
1937
22.9 mm (0.9 in)
1938
78.7 mm (3.1 in)
1939
92.7 mm (3.6 in)
1940
81.3 mm (3.2 in)
1941
119.4 mm (4.7 in)
1942
81.3 mm (3.2 in)
1943
184.2 mm (7.3 in)
1944
71.1 mm (2.8 in)
1945
87.9 mm (3.5 in)
1946
119.4 mm (4.7 in)
1947
73.4 mm (2.9 in)
1948
68.1 mm (2.7 in)
1949
108.0 mm (4.3 in)
1950
190.0 mm (7.5 in)
1951
54.4 mm (2.1 in)
1952
65.3 mm (2.6 in)
1953
56.1 mm (2.2 in)
1954
53.8 mm (2.1 in)
1955
64.3 mm (2.5 in)
1956
71.4 mm (2.8 in)
1957
95.8 mm (3.8 in)
1958
62.7 mm (2.5 in)
1959
95.5 mm (3.8 in)
1960
48.0 mm (1.9 in)
1961
82.0 mm (3.2 in)
1962
63.5 mm (2.5 in)
1963
47.0 mm (1.9 in)
1964
57.2 mm (2.3 in)
1965
51.8 mm (2.0 in)
1966
63.0 mm (2.5 in)
1967
104.4 mm (4.1 in)
1968
64.0 mm (2.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Mt Vernon 3 SW, 1893 to 1968. The record is 318.0 mm (12.5 in) in 1943, marked on the chart; the median year is 108.2 mm (4.3 in).
Wettest five days (Rx5day) at Mt Vernon 3 SW by year
Year
Wettest five days (Rx5day)
1893
150.4 mm (5.9 in)
1894
94.3 mm (3.7 in)
1895
249.0 mm (9.8 in)
1896
106.7 mm (4.2 in)
1897
123.2 mm (4.9 in)
1898
216.7 mm (8.5 in)
1899
147.3 mm (5.8 in)
1900
99.9 mm (3.9 in)
1901
82.3 mm (3.2 in)
1902
147.3 mm (5.8 in)
1903
82.6 mm (3.3 in)
1904
126.3 mm (5.0 in)
1905
127.3 mm (5.0 in)
1906
108.5 mm (4.3 in)
1907
96.9 mm (3.8 in)
1908
125.1 mm (4.9 in)
1909
185.2 mm (7.3 in)
1910
89.4 mm (3.5 in)
1911
226.4 mm (8.9 in)
1912
125.2 mm (4.9 in)
1913
146.0 mm (5.7 in)
1914
89.9 mm (3.5 in)
1915
140.2 mm (5.5 in)
1916
143.8 mm (5.7 in)
1917
104.9 mm (4.1 in)
1918
12.2 mm (0.5 in)
1937
28.7 mm (1.1 in)
1938
125.7 mm (4.9 in)
1939
129.5 mm (5.1 in)
1940
102.9 mm (4.1 in)
1941
196.8 mm (7.7 in)
1942
96.5 mm (3.8 in)
1943
318.0 mm (12.5 in)
1944
82.1 mm (3.2 in)
1945
201.0 mm (7.9 in)
1946
170.9 mm (6.7 in)
1947
128.0 mm (5.0 in)
1948
94.8 mm (3.7 in)
1949
113.9 mm (4.5 in)
1950
287.6 mm (11.3 in)
1951
74.9 mm (2.9 in)
1952
88.7 mm (3.5 in)
1953
57.2 mm (2.3 in)
1954
100.0 mm (3.9 in)
1955
81.8 mm (3.2 in)
1956
89.7 mm (3.5 in)
1957
173.0 mm (6.8 in)
1958
92.9 mm (3.7 in)
1959
180.8 mm (7.1 in)
1960
71.0 mm (2.8 in)
1961
166.8 mm (6.6 in)
1962
103.5 mm (4.1 in)
1963
70.6 mm (2.8 in)
1964
91.4 mm (3.6 in)
1965
126.2 mm (5.0 in)
1966
73.7 mm (2.9 in)
1967
107.9 mm (4.2 in)
1968
92.5 mm (3.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Mt Vernon 3 SW, 1893 to 1968. The record is 58 days in 1901, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Mt Vernon 3 SW by year
Year
Longest dry spell (CDD)
1893
26 days
1894
25 days
1895
33 days
1896
30 days
1897
32 days
1898
23 days
1899
28 days
1900
27 days
1901
58 days
1902
19 days
1903
22 days
1904
23 days
1905
26 days
1906
16 days
1907
15 days
1908
24 days
1909
23 days
1910
23 days
1911
27 days
1912
29 days
1913
26 days
1914
24 days
1915
17 days
1916
26 days
1917
30 days
1918
12 days
1937
13 days
1938
23 days
1939
22 days
1940
25 days
1941
21 days
1942
24 days
1943
40 days
1944
24 days
1945
25 days
1946
19 days
1947
26 days
1948
18 days
1949
19 days
1950
22 days
1951
11 days
1952
27 days
1953
22 days
1954
22 days
1955
26 days
1956
20 days
1957
17 days
1958
20 days
1959
25 days
1960
31 days
1961
32 days
1962
19 days
1963
38 days
1964
18 days
1965
22 days
1966
31 days
1967
19 days
1968
19 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
40 years with a frost
Across 40 years with a frost, the median last spring frost at Mt Vernon 3 SW falls on 17 April and the median first autumn frost on 16 October, which leaves a median of 181 days between them.
Fitted over all years, the growing season changes by +1.5 days per decade at this station.
Frost dates and growing season at Mt Vernon 3 SW
Measure
Median, all years
Earliest period
Recent period (1908 to 1967)
Recent against earliest
Fitted trend
Last spring frost
17 April
n/a
18 April
n/a
-0.1 days per decade
First autumn frost
16 October
n/a
20 October
n/a
+1.4 days per decade
Growing days
181 days
n/a
186 days
n/a
+1.5 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
44 years, 1894 to 1967
A day with at least 77.0 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 181.9 mm (7.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Mt Vernon 3 SW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
77.0 mm (3.0 in)
5 years
101.5 mm (4.0 in)
10 years
119.1 mm (4.7 in)
25 years
142.9 mm (5.6 in)
50 years
161.9 mm (6.4 in)
Longer than the 44 years of record
100 years
181.9 mm (7.2 in)
Longer than the 44 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, 44 years of values from 1894 to 1967.
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: 190.0 mm (7.5 in) in 1950; 139.7 mm (5.5 in) in 1902; 132.1 mm (5.2 in) in 1895.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Mt Vernon 3 SW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mt Vernon 3 SW 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.