Record envelope, standing records and threshold days for Leola (USC00394891), South Dakota, United States, with 109 years of record.
Key Facts for Leola
Leola (USC00394891) is a weather station in South Dakota, United States at 45.72 latitude and -98.94 longitude, 482 m (1,580 ft) above sea level.
The station reports from 1899 to 2007, 109 years of record.
1,464 records set at Leola still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Leola tied a daily record high minimum temperature of 11.1 C (52.0 F) on 7 May 2007.
About the Station
Location: South Dakota, United States, 45.72 latitude, -98.94 longitude.
Elevation: 482 m (1,580 ft).
Period of record: 1899 to 2007, 109 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 Leola. 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 Leola, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
17.2 C (63.0 F)
-37.8 C (-36.0 F)
n/a
n/a
Feb
17.8 C (64.0 F)
-37.8 C (-36.0 F)
n/a
n/a
Mar
27.2 C (81.0 F)
-30.6 C (-23.1 F)
n/a
n/a
Apr
36.1 C (97.0 F)
-20.6 C (-5.1 F)
n/a
n/a
May
39.4 C (102.9 F)
-7.8 C (18.0 F)
n/a
n/a
Jun
42.2 C (108.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jul
46.1 C (115.0 F)
1.1 C (34.0 F)
n/a
n/a
Aug
42.2 C (108.0 F)
0.0 C (32.0 F)
n/a
n/a
Sep
40.6 C (105.1 F)
-14.4 C (6.1 F)
n/a
n/a
Oct
33.9 C (93.0 F)
-18.3 C (-0.9 F)
n/a
n/a
Nov
23.9 C (75.0 F)
-31.1 C (-24.0 F)
n/a
n/a
Dec
16.7 C (62.1 F)
-37.2 C (-35.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Leola still stand. 1902 holds the most, with 57.
Standing records at Leola by the year they were set
Year set
Standing records
1899
19
1900
29
1901
39
1902
57
1903
31
1904
42
1905
51
1906
26
1907
12
1958
7
1959
40
1960
16
1961
15
1962
25
1963
24
1964
25
1965
33
1966
29
1967
21
1968
25
1969
25
1970
12
1971
24
1972
30
1973
18
1974
17
1975
20
1976
27
1977
32
1978
21
1979
20
1980
13
1981
21
1982
12
1983
27
1984
21
1985
33
1986
29
1987
33
1988
43
1989
17
1990
20
1991
39
1992
41
1993
13
1994
18
1995
19
1996
26
1997
33
1998
29
1999
19
2000
24
2001
15
2002
25
2003
21
2004
15
2005
20
2006
19
2007
7
All-Time Record Progression
9 new records
9 all-time records were set at Leola between 24 January 1982 and 15 July 2006. Each dot is a new record.
When Leola set new all-time records
Date
Kind
Detail
1982-01-24
Record snow depth
Record snow depth 61.0 cm (24.0 in)
1982-02-01
Record snow depth
Record snow depth 63.5 cm (25.0 in)
1988-07-06
Record high minimum temperature
Record high minimum temperature 25.0 C (77.0 F)
1997-01-04
Record snow depth
Record snow depth 78.7 cm (31.0 in)
1997-01-05
Record snow depth
Record snow depth 83.8 cm (33.0 in)
1997-01-08
Record snow depth
Record snow depth 86.4 cm (34.0 in)
1997-01-09
Record snow depth
Record snow depth 94.0 cm (37.0 in)
1997-01-10
Record snow depth
Record snow depth 101.6 cm (40.0 in)
2006-07-15
Record high maximum temperature
Record high maximum temperature 46.1 C (115.0 F)
Wettest Day of Each Month
Aug: 124.5 mm (4.9 in)
The wettest day on record for each calendar month at Leola. The most was 124.5 mm (4.9 in) on 18 August 1930.
Record daily precipitation for each month at Leola
Month
Record daily precipitation (mm)
Date
Jan
19.1 mm (0.8 in)
3 January 1907
Feb
36.8 mm (1.4 in)
27 February 1958
Mar
54.6 mm (2.1 in)
26 March 1902
Apr
66.0 mm (2.6 in)
23 April 1932
May
88.9 mm (3.5 in)
3 May 1964
Jun
95.3 mm (3.8 in)
18 June 1964
Jul
102.1 mm (4.0 in)
7 July 1994
Aug
124.5 mm (4.9 in)
18 August 1930
Sep
63.5 mm (2.5 in)
17 September 1903
Oct
55.9 mm (2.2 in)
9 October 1982
Nov
29.0 mm (1.1 in)
8 November 1977
Dec
25.1 mm (1.0 in)
26 December 1988
Period of Record Coverage
1899 to 2007
Complete yearUnder 90 percent of days
59 years of record at Leola, 1899 to 2007. 7 years have data for under 90 percent of days and are left out of rankings: 1899, 1902, 1907, 1958, 2000, 2004, 2007.
Cooler than the station meanWarmer than the station mean
One stripe for each of 46 complete years at Leola, 1900 to 2005. Blue stripes are years cooler than the station's own mean of 6.1 C (43.0 F); red stripes are warmer. The coolest year was 1996, at 4.4 C (39.9 F), and the warmest was 1987, at 8.9 C (48.1 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Leola as warming stripes, 1900 to 2005
Year
Annual mean temperature
Difference from the station mean
1900
6.2 C
+0.05 C
1901
5.8 C
-0.32 C
1903
4.9 C
-1.19 C
1904
4.9 C
-1.20 C
1905
4.8 C
-1.33 C
1906
5.1 C
-1.06 C
1959
6.0 C
-0.10 C
1960
5.4 C
-0.68 C
1961
6.2 C
+0.08 C
1962
5.9 C
-0.20 C
1963
7.0 C
+0.85 C
1965
5.1 C
-1.06 C
1966
5.1 C
-1.04 C
1967
5.7 C
-0.45 C
1970
5.0 C
-1.14 C
1971
5.1 C
-1.05 C
1974
6.6 C
+0.53 C
1975
5.9 C
-0.18 C
1976
6.6 C
+0.44 C
1977
6.7 C
+0.56 C
1978
4.8 C
-1.30 C
1979
4.6 C
-1.49 C
1980
6.8 C
+0.70 C
1981
7.6 C
+1.51 C
1982
5.0 C
-1.07 C
1983
6.5 C
+0.35 C
1984
6.7 C
+0.54 C
1985
5.0 C
-1.11 C
1986
6.9 C
+0.82 C
1987
8.9 C
+2.81 C
1988
7.4 C
+1.27 C
1989
5.6 C
-0.48 C
1990
7.3 C
+1.18 C
1991
7.3 C
+1.18 C
1992
6.5 C
+0.35 C
1993
4.8 C
-1.34 C
1994
5.6 C
-0.47 C
1995
5.5 C
-0.58 C
1996
4.4 C
-1.74 C
1997
6.2 C
+0.08 C
1998
8.0 C
+1.89 C
1999
7.9 C
+1.82 C
2001
7.1 C
+0.97 C
2002
7.1 C
+0.98 C
2003
6.7 C
+0.62 C
2005
7.2 C
+1.04 C
The annual mean temperature here has risen by 0.15 C (0.05 to 0.25) per decade over 1900 to 2005. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 46 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Leola
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.15 C (0.05 to 0.25) per decade
0.3 F (0.1 to 0.4) per decade
1900 to 2005
46
Rise
Mean daily maximum
0.0 C (-0.1 to 0.1) per decade
0.0 F (-0.2 to 0.2) per decade
1900 to 2005
46
Not clearly different from zero
Mean daily minimum
0.3 C (0.2 to 0.4) per decade
0.5 F (0.3 to 0.7) per decade
1900 to 2005
46
Rise
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
1899 to 2007
Yearly extremes at Leola: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.1 C (115.0 F)
2006
38.3 C (100.9 F)
59
Coldest night (TNn)
-37.8 C (-36.0 F)
1903
-32.2 C (-26.0 F)
59
Wettest day (Rx1day)
124.5 mm (4.9 in)
1930
47.8 mm (1.9 in)
89
Wettest five days (Rx5day)
144.4 mm (5.7 in)
1964
66.9 mm (2.6 in)
89
Longest dry spell (CDD)
86 days
1934
35 days
89
Hottest day (TXx)
The hottest day of the year at Leola, 1899 to 2007. The record is 46.1 C (115.0 F) in 2006, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at Leola by year
Year
Hottest day (TXx)
1899
30.0 C (86.0 F)
1900
42.2 C (108.0 F)
1901
40.6 C (105.1 F)
1902
37.8 C (100.0 F)
1903
39.4 C (102.9 F)
1904
35.6 C (96.1 F)
1905
35.0 C (95.0 F)
1906
36.7 C (98.1 F)
1907
29.4 C (84.9 F)
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
n/a
1958
39.4 C (102.9 F)
1959
41.7 C (107.1 F)
1960
38.3 C (100.9 F)
1961
38.9 C (102.0 F)
1962
36.7 C (98.1 F)
1963
37.8 C (100.0 F)
1964
38.3 C (100.9 F)
1965
41.7 C (107.1 F)
1966
42.8 C (109.0 F)
1967
38.3 C (100.9 F)
1968
37.2 C (99.0 F)
1969
39.4 C (102.9 F)
1970
37.8 C (100.0 F)
1971
40.0 C (104.0 F)
1972
37.8 C (100.0 F)
1973
42.2 C (108.0 F)
1974
38.3 C (100.9 F)
1975
38.9 C (102.0 F)
1976
41.7 C (107.1 F)
1977
41.7 C (107.1 F)
1978
40.0 C (104.0 F)
1979
36.7 C (98.1 F)
1980
40.0 C (104.0 F)
1981
37.8 C (100.0 F)
1982
41.1 C (106.0 F)
1983
40.6 C (105.1 F)
1984
39.4 C (102.9 F)
1985
41.1 C (106.0 F)
1986
36.1 C (97.0 F)
1987
38.9 C (102.0 F)
1988
41.7 C (107.1 F)
1989
42.8 C (109.0 F)
1990
35.0 C (95.0 F)
1991
38.9 C (102.0 F)
1992
37.2 C (99.0 F)
1993
33.9 C (93.0 F)
1994
33.3 C (91.9 F)
1995
35.0 C (95.0 F)
1996
36.1 C (97.0 F)
1997
35.6 C (96.1 F)
1998
36.1 C (97.0 F)
1999
35.6 C (96.1 F)
2000
35.0 C (95.0 F)
2001
37.8 C (100.0 F)
2002
42.2 C (108.0 F)
2003
42.2 C (108.0 F)
2004
32.8 C (91.0 F)
2005
38.3 C (100.9 F)
2006
46.1 C (115.0 F)
2007
33.3 C (91.9 F)
Coldest night (TNn)
The coldest night of the year at Leola, 1899 to 2007. The record is -37.8 C (-36.0 F) in 1903, marked on the chart; the median year is -32.2 C (-26.0 F).
Coldest night (TNn) at Leola by year
Year
Coldest night (TNn)
1899
-28.9 C (-20.0 F)
1900
-33.3 C (-27.9 F)
1901
-35.0 C (-31.0 F)
1902
-37.2 C (-35.0 F)
1903
-37.8 C (-36.0 F)
1904
-37.8 C (-36.0 F)
1905
-37.8 C (-36.0 F)
1906
-36.1 C (-33.0 F)
1907
-35.0 C (-31.0 F)
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
n/a
1958
-26.7 C (-16.1 F)
1959
-30.0 C (-22.0 F)
1960
-32.2 C (-26.0 F)
1961
-32.2 C (-26.0 F)
1962
-31.7 C (-25.1 F)
1963
-32.2 C (-26.0 F)
1964
-30.0 C (-22.0 F)
1965
-32.8 C (-27.0 F)
1966
-33.3 C (-27.9 F)
1967
-37.2 C (-35.0 F)
1968
-34.4 C (-29.9 F)
1969
-31.1 C (-24.0 F)
1970
-33.3 C (-27.9 F)
1971
-32.2 C (-26.0 F)
1972
-36.1 C (-33.0 F)
1973
-30.0 C (-22.0 F)
1974
-33.3 C (-27.9 F)
1975
-33.9 C (-29.0 F)
1976
-32.2 C (-26.0 F)
1977
-35.6 C (-32.1 F)
1978
-31.7 C (-25.1 F)
1979
-31.1 C (-24.0 F)
1980
-30.0 C (-22.0 F)
1981
-28.9 C (-20.0 F)
1982
-35.0 C (-31.0 F)
1983
-35.6 C (-32.1 F)
1984
-33.9 C (-29.0 F)
1985
-33.3 C (-27.9 F)
1986
-28.9 C (-20.0 F)
1987
-27.8 C (-18.0 F)
1988
-32.2 C (-26.0 F)
1989
-35.0 C (-31.0 F)
1990
-34.4 C (-29.9 F)
1991
-27.2 C (-17.0 F)
1992
-26.7 C (-16.1 F)
1993
-29.4 C (-20.9 F)
1994
-35.0 C (-31.0 F)
1995
-27.8 C (-18.0 F)
1996
-35.0 C (-31.0 F)
1997
-29.4 C (-20.9 F)
1998
-30.6 C (-23.1 F)
1999
-30.6 C (-23.1 F)
2000
-30.0 C (-22.0 F)
2001
-27.2 C (-17.0 F)
2002
-26.1 C (-15.0 F)
2003
-29.4 C (-20.9 F)
2004
-30.6 C (-23.1 F)
2005
-30.0 C (-22.0 F)
2006
-26.7 C (-16.1 F)
2007
-30.0 C (-22.0 F)
Wettest day (Rx1day)
The wettest day of the year at Leola, 1899 to 2007. The record is 124.5 mm (4.9 in) in 1930, marked on the chart; the median year is 47.8 mm (1.9 in).
Wettest day (Rx1day) at Leola by year
Year
Wettest day (Rx1day)
1899
38.4 mm (1.5 in)
1900
47.8 mm (1.9 in)
1901
27.2 mm (1.1 in)
1902
62.2 mm (2.4 in)
1903
63.5 mm (2.5 in)
1904
50.8 mm (2.0 in)
1905
53.3 mm (2.1 in)
1906
61.0 mm (2.4 in)
1907
25.4 mm (1.0 in)
1928
61.0 mm (2.4 in)
1929
55.4 mm (2.2 in)
1930
124.5 mm (4.9 in)
1931
53.3 mm (2.1 in)
1932
88.9 mm (3.5 in)
1933
31.8 mm (1.3 in)
1934
24.1 mm (0.9 in)
1935
54.4 mm (2.1 in)
1936
17.8 mm (0.7 in)
1937
53.3 mm (2.1 in)
1938
41.7 mm (1.6 in)
1939
77.2 mm (3.0 in)
1940
37.8 mm (1.5 in)
1941
58.9 mm (2.3 in)
1942
53.6 mm (2.1 in)
1943
30.5 mm (1.2 in)
1944
96.3 mm (3.8 in)
1945
23.9 mm (0.9 in)
1946
81.3 mm (3.2 in)
1947
52.1 mm (2.1 in)
1948
50.0 mm (2.0 in)
1949
59.7 mm (2.4 in)
1950
34.0 mm (1.3 in)
1951
61.0 mm (2.4 in)
1952
27.9 mm (1.1 in)
1953
41.9 mm (1.6 in)
1954
47.8 mm (1.9 in)
1955
36.6 mm (1.4 in)
1956
31.8 mm (1.3 in)
1957
48.8 mm (1.9 in)
1958
63.5 mm (2.5 in)
1959
50.3 mm (2.0 in)
1960
45.0 mm (1.8 in)
1961
43.4 mm (1.7 in)
1962
28.7 mm (1.1 in)
1963
52.1 mm (2.1 in)
1964
95.3 mm (3.8 in)
1965
43.2 mm (1.7 in)
1966
65.0 mm (2.6 in)
1967
38.6 mm (1.5 in)
1968
60.2 mm (2.4 in)
1969
61.0 mm (2.4 in)
1970
41.9 mm (1.6 in)
1971
29.2 mm (1.1 in)
1972
38.1 mm (1.5 in)
1973
37.3 mm (1.5 in)
1974
38.9 mm (1.5 in)
1975
61.0 mm (2.4 in)
1976
33.8 mm (1.3 in)
1977
39.6 mm (1.6 in)
1978
35.1 mm (1.4 in)
1979
63.0 mm (2.5 in)
1980
45.7 mm (1.8 in)
1981
39.9 mm (1.6 in)
1982
55.9 mm (2.2 in)
1983
30.0 mm (1.2 in)
1984
25.9 mm (1.0 in)
1985
39.1 mm (1.5 in)
1986
58.4 mm (2.3 in)
1987
43.2 mm (1.7 in)
1988
41.4 mm (1.6 in)
1989
61.0 mm (2.4 in)
1990
71.1 mm (2.8 in)
1991
48.3 mm (1.9 in)
1992
36.1 mm (1.4 in)
1993
87.6 mm (3.4 in)
1994
102.1 mm (4.0 in)
1995
54.6 mm (2.1 in)
1996
53.3 mm (2.1 in)
1997
31.5 mm (1.2 in)
1998
72.4 mm (2.9 in)
1999
63.0 mm (2.5 in)
2000
40.6 mm (1.6 in)
2001
44.5 mm (1.8 in)
2002
34.8 mm (1.4 in)
2003
85.1 mm (3.4 in)
2004
38.1 mm (1.5 in)
2005
46.0 mm (1.8 in)
2006
67.3 mm (2.6 in)
2007
24.1 mm (0.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Leola, 1899 to 2007. The record is 144.4 mm (5.7 in) in 1964, marked on the chart; the median year is 66.9 mm (2.6 in).
Wettest five days (Rx5day) at Leola by year
Year
Wettest five days (Rx5day)
1899
91.2 mm (3.6 in)
1900
64.8 mm (2.6 in)
1901
41.2 mm (1.6 in)
1902
71.6 mm (2.8 in)
1903
73.6 mm (2.9 in)
1904
71.1 mm (2.8 in)
1905
82.5 mm (3.2 in)
1906
118.2 mm (4.7 in)
1907
44.5 mm (1.8 in)
1928
73.9 mm (2.9 in)
1929
63.2 mm (2.5 in)
1930
132.7 mm (5.2 in)
1931
78.7 mm (3.1 in)
1932
108.8 mm (4.3 in)
1933
38.2 mm (1.5 in)
1934
28.0 mm (1.1 in)
1935
59.7 mm (2.4 in)
1936
20.3 mm (0.8 in)
1937
54.4 mm (2.1 in)
1938
66.1 mm (2.6 in)
1939
130.5 mm (5.1 in)
1940
72.1 mm (2.8 in)
1941
84.8 mm (3.3 in)
1942
62.2 mm (2.4 in)
1943
54.6 mm (2.1 in)
1944
103.4 mm (4.1 in)
1945
34.1 mm (1.3 in)
1946
83.8 mm (3.3 in)
1947
56.4 mm (2.2 in)
1948
65.4 mm (2.6 in)
1949
84.6 mm (3.3 in)
1950
79.3 mm (3.1 in)
1951
78.7 mm (3.1 in)
1952
64.7 mm (2.5 in)
1953
80.6 mm (3.2 in)
1954
96.0 mm (3.8 in)
1955
52.1 mm (2.1 in)
1956
52.1 mm (2.1 in)
1957
89.9 mm (3.5 in)
1958
69.9 mm (2.8 in)
1959
65.8 mm (2.6 in)
1960
60.2 mm (2.4 in)
1961
61.3 mm (2.4 in)
1962
64.3 mm (2.5 in)
1963
77.6 mm (3.1 in)
1964
144.4 mm (5.7 in)
1965
62.9 mm (2.5 in)
1966
106.1 mm (4.2 in)
1967
66.8 mm (2.6 in)
1968
95.5 mm (3.8 in)
1969
109.8 mm (4.3 in)
1970
54.6 mm (2.1 in)
1971
39.9 mm (1.6 in)
1972
55.6 mm (2.2 in)
1973
41.1 mm (1.6 in)
1974
67.6 mm (2.7 in)
1975
106.5 mm (4.2 in)
1976
43.5 mm (1.7 in)
1977
50.0 mm (2.0 in)
1978
50.8 mm (2.0 in)
1979
96.2 mm (3.8 in)
1980
51.0 mm (2.0 in)
1981
69.6 mm (2.7 in)
1982
87.6 mm (3.4 in)
1983
62.5 mm (2.5 in)
1984
52.9 mm (2.1 in)
1985
54.3 mm (2.1 in)
1986
68.3 mm (2.7 in)
1987
66.9 mm (2.6 in)
1988
47.6 mm (1.9 in)
1989
88.7 mm (3.5 in)
1990
72.9 mm (2.9 in)
1991
73.6 mm (2.9 in)
1992
60.5 mm (2.4 in)
1993
98.8 mm (3.9 in)
1994
138.3 mm (5.4 in)
1995
99.8 mm (3.9 in)
1996
107.9 mm (4.2 in)
1997
54.9 mm (2.2 in)
1998
86.4 mm (3.4 in)
1999
76.4 mm (3.0 in)
2000
46.1 mm (1.8 in)
2001
65.3 mm (2.6 in)
2002
52.1 mm (2.1 in)
2003
91.5 mm (3.6 in)
2004
65.3 mm (2.6 in)
2005
63.7 mm (2.5 in)
2006
86.1 mm (3.4 in)
2007
47.3 mm (1.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Leola, 1899 to 2007. The record is 86 days in 1934, marked on the chart; the median year is 35 days.
Longest dry spell (CDD) at Leola by year
Year
Longest dry spell (CDD)
1899
27 days
1900
35 days
1901
31 days
1902
33 days
1903
43 days
1904
47 days
1905
34 days
1906
25 days
1907
24 days
1928
47 days
1929
26 days
1930
42 days
1931
25 days
1932
41 days
1933
66 days
1934
86 days
1935
73 days
1936
39 days
1937
58 days
1938
32 days
1939
70 days
1940
41 days
1941
59 days
1942
37 days
1943
36 days
1944
35 days
1945
71 days
1946
35 days
1947
50 days
1948
37 days
1949
24 days
1950
45 days
1951
33 days
1952
56 days
1953
25 days
1954
30 days
1955
31 days
1956
41 days
1957
32 days
1958
27 days
1959
42 days
1960
30 days
1961
47 days
1962
29 days
1963
39 days
1964
55 days
1965
23 days
1966
33 days
1967
47 days
1968
27 days
1969
25 days
1970
20 days
1971
39 days
1972
34 days
1973
28 days
1974
48 days
1975
31 days
1976
49 days
1977
34 days
1978
35 days
1979
36 days
1980
47 days
1981
52 days
1982
29 days
1983
24 days
1984
36 days
1985
44 days
1986
43 days
1987
54 days
1988
44 days
1989
35 days
1990
26 days
1991
40 days
1992
53 days
1993
24 days
1994
26 days
1995
27 days
1996
19 days
1997
18 days
1998
29 days
1999
58 days
2000
28 days
2001
33 days
2002
25 days
2003
25 days
2004
60 days
2005
24 days
2006
47 days
2007
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
46 years with a frost
Across 46 years with a frost, the median last spring frost at Leola falls on 12 May and the median first autumn frost on 23 September, which leaves a median of 136 days between them.
Fitted over all years, the growing season changes by +2.4 days per decade at this station.
Frost dates and growing season at Leola
Measure
Median, all years
Earliest period
Recent period (1974 to 2005)
Recent against earliest
Fitted trend
Last spring frost
12 May
n/a
7 May
n/a
-1.5 days per decade
First autumn frost
23 September
n/a
24 September
n/a
+0.9 days per decade
Growing days
136 days
n/a
143 days
n/a
+2.4 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
81 years, 1900 to 2006
A day with at least 47.9 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 115.5 mm (4.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Leola: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
47.9 mm (1.9 in)
5 years
65.2 mm (2.6 in)
10 years
76.9 mm (3.0 in)
25 years
92.2 mm (3.6 in)
50 years
103.8 mm (4.1 in)
100 years
115.5 mm (4.5 in)
Longer than the 81 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, 81 years of values from 1900 to 2006.
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: 124.5 mm (4.9 in) in 1930; 102.1 mm (4.0 in) in 1994; 96.3 mm (3.8 in) in 1944.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Leola standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Leola 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.