Record envelope, standing records and threshold days for Sanderson (USC00418022), Texas, United States, with 117 years of record.
Key Facts for Sanderson
Sanderson (USC00418022) is a weather station in Texas, United States at 30.14 latitude and -102.39 longitude, 850 m (2,788 ft) above sea level.
The station reports from 1897 to 2013, 117 years of record.
1,464 records set at Sanderson still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Sanderson set a daily record precipitation of 20.8 mm (0.8 in) on 30 July 2013.
About the Station
Location: Texas, United States, 30.14 latitude, -102.39 longitude.
Elevation: 850 m (2,788 ft).
Period of record: 1897 to 2013, 117 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 Sanderson. 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 Sanderson, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
30.6 C (87.1 F)
-13.9 C (7.0 F)
n/a
n/a
Feb
34.4 C (93.9 F)
-15.6 C (3.9 F)
n/a
n/a
Mar
35.6 C (96.1 F)
-11.1 C (12.0 F)
n/a
n/a
Apr
38.3 C (100.9 F)
-5.6 C (21.9 F)
n/a
n/a
May
42.8 C (109.0 F)
-1.1 C (30.0 F)
n/a
n/a
Jun
43.3 C (109.9 F)
7.8 C (46.0 F)
n/a
n/a
Jul
41.7 C (107.1 F)
9.4 C (48.9 F)
n/a
n/a
Aug
41.1 C (106.0 F)
12.2 C (54.0 F)
n/a
n/a
Sep
41.1 C (106.0 F)
4.4 C (39.9 F)
n/a
n/a
Oct
38.9 C (102.0 F)
-6.1 C (21.0 F)
n/a
n/a
Nov
34.4 C (93.9 F)
-11.1 C (12.0 F)
n/a
n/a
Dec
29.4 C (84.9 F)
-16.1 C (3.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Sanderson still stand. 1900 holds the most, with 102.
Standing records at Sanderson by the year they were set
Year set
Standing records
1897
30
1898
37
1900
102
1901
34
1902
7
1903
26
1928
1
1929
21
1930
31
1931
28
1932
33
1933
17
1934
40
1935
25
1936
6
1962
8
1963
21
1964
16
1965
28
1966
19
1967
20
1968
17
1969
27
1970
27
1971
24
1972
25
1973
18
1974
29
1975
13
1976
35
1977
25
1978
14
1979
19
1980
19
1981
22
1982
28
1983
18
1984
23
1985
27
1986
21
1987
15
1988
26
1989
36
1990
20
1991
12
1992
13
1993
14
1994
10
1995
19
1996
22
1997
20
1998
28
1999
7
2000
24
2001
10
2002
13
2003
21
2004
26
2005
16
2006
10
2008
15
2009
19
2010
18
2011
46
2012
9
2013
14
All-Time Record Progression
4 new records
4 all-time records were set at Sanderson between 25 December 1983 and 22 December 1989. Each dot is a new record.
When Sanderson set new all-time records
Date
Kind
Detail
1983-12-25
Record low maximum temperature
Record low maximum temperature -6.7 C (19.9 F)
1986-01-07
Record daily snowfall
Record daily snowfall 27.9 cm (11.0 in)
1989-12-22
Record low maximum temperature
Record low maximum temperature -8.3 C (17.1 F)
1989-12-22
Record low minimum temperature
Record low minimum temperature -16.1 C (3.0 F)
Wettest Day of Each Month
Jun: 135.9 mm (5.4 in)
The wettest day on record for each calendar month at Sanderson. The most was 135.9 mm (5.4 in) on 11 June 1965.
Record daily precipitation for each month at Sanderson
Month
Record daily precipitation (mm)
Date
Jan
35.6 mm (1.4 in)
15 January 1903
Feb
25.4 mm (1.0 in)
26 February 1903
Mar
64.3 mm (2.5 in)
10 March 1997
Apr
67.8 mm (2.7 in)
30 April 1974
May
76.2 mm (3.0 in)
24 May 1992
Jun
135.9 mm (5.4 in)
11 June 1965
Jul
103.9 mm (4.1 in)
3 July 2010
Aug
91.4 mm (3.6 in)
31 August 1993
Sep
127.8 mm (5.0 in)
18 September 1988
Oct
82.6 mm (3.3 in)
11 October 1984
Nov
129.5 mm (5.1 in)
5 November 1978
Dec
26.9 mm (1.1 in)
22 December 1986
Period of Record Coverage
1897 to 2013
Complete yearUnder 90 percent of days
67 years of record at Sanderson, 1897 to 2013. 13 years have data for under 90 percent of days and are left out of rankings: 1897, 1898, 1903, 1928, 1936, 1962, 1964, 1990 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 45 complete years at Sanderson, 1900 to 2011. Blue stripes are years cooler than the station's own mean of 18.1 C (64.5 F); red stripes are warmer. The coolest year was 1988, at 16.3 C (61.3 F), and the warmest was 1900, at 19.9 C (67.8 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Sanderson as warming stripes, 1900 to 2011
Year
Annual mean temperature
Difference from the station mean
1900
19.9 C
+1.81 C
1901
19.7 C
+1.63 C
1929
18.9 C
+0.81 C
1930
18.5 C
+0.46 C
1931
18.2 C
+0.12 C
1932
17.7 C
-0.38 C
1933
18.1 C
+0.02 C
1935
18.7 C
+0.57 C
1963
17.8 C
-0.26 C
1965
18.3 C
+0.26 C
1966
17.4 C
-0.72 C
1967
18.0 C
-0.04 C
1968
17.3 C
-0.83 C
1969
18.4 C
+0.35 C
1970
17.2 C
-0.91 C
1971
17.7 C
-0.38 C
1972
17.8 C
-0.33 C
1974
17.1 C
-0.95 C
1975
17.4 C
-0.65 C
1976
16.5 C
-1.56 C
1977
18.5 C
+0.46 C
1978
17.4 C
-0.67 C
1979
17.1 C
-1.01 C
1981
18.0 C
-0.07 C
1982
18.4 C
+0.35 C
1983
18.0 C
-0.10 C
1984
18.0 C
-0.10 C
1987
17.0 C
-1.12 C
1988
16.3 C
-1.79 C
1989
16.7 C
-1.42 C
1991
18.1 C
+0.04 C
1992
18.0 C
-0.04 C
1993
18.3 C
+0.20 C
1994
19.0 C
+0.90 C
1995
18.4 C
+0.29 C
1996
18.3 C
+0.21 C
1997
17.4 C
-0.68 C
1998
19.4 C
+1.31 C
1999
18.6 C
+0.52 C
2000
18.7 C
+0.64 C
2001
18.8 C
+0.69 C
2002
17.9 C
-0.23 C
2008
18.7 C
+0.65 C
2010
18.2 C
+0.12 C
2011
19.8 C
+1.76 C
The fitted trend in annual mean temperature here over 1900 to 2011 is -0.06 C (-0.15 to 0.03) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.3 to 0.1) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Sanderson
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.06 C (-0.15 to 0.03) per decade
-0.1 F (-0.3 to 0.1) per decade
1900 to 2011
45
Not clearly different from zero
Mean daily maximum
-0.04 C (-0.15 to 0.07) per decade
-0.1 F (-0.3 to 0.1) per decade
1900 to 2011
45
Not clearly different from zero
Mean daily minimum
-0.08 C (-0.20 to 0.04) per decade
-0.1 F (-0.4 to 0.1) per decade
1900 to 2011
45
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
1897 to 2013
Yearly extremes at Sanderson: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
1969
40.0 C (104.0 F)
67
Coldest night (TNn)
-16.1 C (3.0 F)
1989
-10.0 C (14.0 F)
67
Wettest day (Rx1day)
135.9 mm (5.4 in)
1965
42.2 mm (1.7 in)
81
Wettest five days (Rx5day)
209.1 mm (8.2 in)
2010
65.6 mm (2.6 in)
81
Longest dry spell (CDD)
144 days
1933
58 days
81
Hottest day (TXx)
The hottest day of the year at Sanderson, 1897 to 2013. The record is 43.3 C (109.9 F) in 1969, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at Sanderson by year
Year
Hottest day (TXx)
1897
40.0 C (104.0 F)
1898
37.2 C (99.0 F)
1900
40.6 C (105.1 F)
1901
38.9 C (102.0 F)
1902
40.6 C (105.1 F)
1903
39.4 C (102.9 F)
1928
25.6 C (78.1 F)
1929
40.6 C (105.1 F)
1930
38.9 C (102.0 F)
1931
37.8 C (100.0 F)
1932
40.6 C (105.1 F)
1933
37.2 C (99.0 F)
1934
42.8 C (109.0 F)
1935
40.6 C (105.1 F)
1936
30.0 C (86.0 F)
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
n/a
1959
n/a
1960
n/a
1961
n/a
1962
40.0 C (104.0 F)
1963
38.3 C (100.9 F)
1964
39.4 C (102.9 F)
1965
40.0 C (104.0 F)
1966
41.1 C (106.0 F)
1967
42.8 C (109.0 F)
1968
38.9 C (102.0 F)
1969
43.3 C (109.9 F)
1970
37.8 C (100.0 F)
1971
37.8 C (100.0 F)
1972
41.1 C (106.0 F)
1973
39.4 C (102.9 F)
1974
41.1 C (106.0 F)
1975
40.6 C (105.1 F)
1976
37.2 C (99.0 F)
1977
41.1 C (106.0 F)
1978
40.6 C (105.1 F)
1979
38.3 C (100.9 F)
1980
42.2 C (108.0 F)
1981
37.8 C (100.0 F)
1982
39.4 C (102.9 F)
1983
40.6 C (105.1 F)
1984
40.6 C (105.1 F)
1985
38.9 C (102.0 F)
1986
40.0 C (104.0 F)
1987
38.3 C (100.9 F)
1988
40.6 C (105.1 F)
1989
38.3 C (100.9 F)
1990
38.9 C (102.0 F)
1991
38.9 C (102.0 F)
1992
38.9 C (102.0 F)
1993
40.0 C (104.0 F)
1994
42.2 C (108.0 F)
1995
40.6 C (105.1 F)
1996
40.6 C (105.1 F)
1997
38.9 C (102.0 F)
1998
41.1 C (106.0 F)
1999
37.2 C (99.0 F)
2000
42.8 C (109.0 F)
2001
40.0 C (104.0 F)
2002
38.9 C (102.0 F)
2003
41.1 C (106.0 F)
2004
39.4 C (102.9 F)
2005
40.0 C (104.0 F)
2006
38.9 C (102.0 F)
2007
19.4 C (66.9 F)
2008
39.4 C (102.9 F)
2009
40.6 C (105.1 F)
2010
40.6 C (105.1 F)
2011
42.2 C (108.0 F)
2012
40.6 C (105.1 F)
2013
39.4 C (102.9 F)
Coldest night (TNn)
The coldest night of the year at Sanderson, 1897 to 2013. The record is -16.1 C (3.0 F) in 1989, marked on the chart; the median year is -10.0 C (14.0 F).
Coldest night (TNn) at Sanderson by year
Year
Coldest night (TNn)
1897
-11.1 C (12.0 F)
1898
-8.9 C (16.0 F)
1900
-8.9 C (16.0 F)
1901
-9.4 C (15.1 F)
1902
-5.6 C (21.9 F)
1903
-8.9 C (16.0 F)
1928
-6.1 C (21.0 F)
1929
-15.6 C (3.9 F)
1930
-13.9 C (7.0 F)
1931
-6.7 C (19.9 F)
1932
-11.1 C (12.0 F)
1933
-15.6 C (3.9 F)
1934
-11.7 C (10.9 F)
1935
-12.8 C (9.0 F)
1936
-10.6 C (12.9 F)
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
n/a
1959
n/a
1960
n/a
1961
n/a
1962
-5.0 C (23.0 F)
1963
-11.1 C (12.0 F)
1964
-12.2 C (10.0 F)
1965
-8.9 C (16.0 F)
1966
-10.0 C (14.0 F)
1967
-6.7 C (19.9 F)
1968
-8.9 C (16.0 F)
1969
-6.7 C (19.9 F)
1970
-11.1 C (12.0 F)
1971
-10.0 C (14.0 F)
1972
-13.3 C (8.1 F)
1973
-10.0 C (14.0 F)
1974
-10.0 C (14.0 F)
1975
-7.8 C (18.0 F)
1976
-12.8 C (9.0 F)
1977
-11.1 C (12.0 F)
1978
-10.0 C (14.0 F)
1979
-12.2 C (10.0 F)
1980
-10.6 C (12.9 F)
1981
-10.6 C (12.9 F)
1982
-10.0 C (14.0 F)
1983
-13.3 C (8.1 F)
1984
-6.7 C (19.9 F)
1985
-15.0 C (5.0 F)
1986
-5.6 C (21.9 F)
1987
-7.8 C (18.0 F)
1988
-10.6 C (12.9 F)
1989
-16.1 C (3.0 F)
1990
-15.6 C (3.9 F)
1991
-5.6 C (21.9 F)
1992
-7.2 C (19.0 F)
1993
-7.8 C (18.0 F)
1994
-7.8 C (18.0 F)
1995
-5.6 C (21.9 F)
1996
-11.7 C (10.9 F)
1997
-10.0 C (14.0 F)
1998
-6.1 C (21.0 F)
1999
-9.4 C (15.1 F)
2000
-7.8 C (18.0 F)
2001
-6.1 C (21.0 F)
2002
-10.0 C (14.0 F)
2003
-7.2 C (19.0 F)
2004
-8.3 C (17.1 F)
2005
-10.6 C (12.9 F)
2006
-7.2 C (19.0 F)
2007
-4.4 C (24.1 F)
2008
-9.4 C (15.1 F)
2009
-6.7 C (19.9 F)
2010
-11.7 C (10.9 F)
2011
-13.9 C (7.0 F)
2012
-6.7 C (19.9 F)
2013
-7.2 C (19.0 F)
Wettest day (Rx1day)
The wettest day of the year at Sanderson, 1897 to 2013. The record is 135.9 mm (5.4 in) in 1965, marked on the chart; the median year is 42.2 mm (1.7 in).
Wettest day (Rx1day) at Sanderson by year
Year
Wettest day (Rx1day)
1897
31.8 mm (1.3 in)
1898
15.2 mm (0.6 in)
1900
108.0 mm (4.3 in)
1901
35.6 mm (1.4 in)
1902
27.9 mm (1.1 in)
1903
55.9 mm (2.2 in)
1928
11.4 mm (0.4 in)
1929
35.6 mm (1.4 in)
1930
37.1 mm (1.5 in)
1931
56.4 mm (2.2 in)
1932
50.8 mm (2.0 in)
1933
21.3 mm (0.8 in)
1934
15.5 mm (0.6 in)
1935
104.9 mm (4.1 in)
1936
3.0 mm (0.12 in)
1948
40.6 mm (1.6 in)
1949
49.5 mm (1.9 in)
1950
27.9 mm (1.1 in)
1951
37.6 mm (1.5 in)
1952
21.6 mm (0.9 in)
1953
36.8 mm (1.4 in)
1954
25.4 mm (1.0 in)
1955
39.4 mm (1.6 in)
1956
40.1 mm (1.6 in)
1957
23.4 mm (0.9 in)
1958
77.5 mm (3.1 in)
1959
25.7 mm (1.0 in)
1960
57.9 mm (2.3 in)
1961
58.4 mm (2.3 in)
1962
39.4 mm (1.6 in)
1963
47.2 mm (1.9 in)
1964
35.6 mm (1.4 in)
1965
135.9 mm (5.4 in)
1966
47.2 mm (1.9 in)
1967
64.8 mm (2.6 in)
1968
33.0 mm (1.3 in)
1969
41.9 mm (1.6 in)
1970
41.1 mm (1.6 in)
1971
41.9 mm (1.6 in)
1972
71.6 mm (2.8 in)
1973
29.7 mm (1.2 in)
1974
67.8 mm (2.7 in)
1975
65.5 mm (2.6 in)
1976
81.3 mm (3.2 in)
1977
30.0 mm (1.2 in)
1978
129.5 mm (5.1 in)
1979
70.1 mm (2.8 in)
1980
88.6 mm (3.5 in)
1981
55.9 mm (2.2 in)
1982
25.4 mm (1.0 in)
1983
62.5 mm (2.5 in)
1984
82.6 mm (3.3 in)
1985
40.4 mm (1.6 in)
1986
57.7 mm (2.3 in)
1987
53.6 mm (2.1 in)
1988
127.8 mm (5.0 in)
1989
35.6 mm (1.4 in)
1990
42.2 mm (1.7 in)
1991
55.9 mm (2.2 in)
1992
76.2 mm (3.0 in)
1993
91.4 mm (3.6 in)
1994
28.7 mm (1.1 in)
1995
62.5 mm (2.5 in)
1996
42.2 mm (1.7 in)
1997
86.4 mm (3.4 in)
1998
39.4 mm (1.6 in)
1999
106.7 mm (4.2 in)
2000
43.2 mm (1.7 in)
2001
81.3 mm (3.2 in)
2002
53.8 mm (2.1 in)
2003
44.5 mm (1.8 in)
2004
64.8 mm (2.6 in)
2005
41.7 mm (1.6 in)
2006
19.6 mm (0.8 in)
2007
21.1 mm (0.8 in)
2008
104.1 mm (4.1 in)
2009
42.9 mm (1.7 in)
2010
103.9 mm (4.1 in)
2011
26.9 mm (1.1 in)
2012
40.1 mm (1.6 in)
2013
31.2 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Sanderson, 1897 to 2013. The record is 209.1 mm (8.2 in) in 2010, marked on the chart; the median year is 65.6 mm (2.6 in).
Wettest five days (Rx5day) at Sanderson by year
Year
Wettest five days (Rx5day)
1897
63.5 mm (2.5 in)
1898
15.2 mm (0.6 in)
1900
108.0 mm (4.3 in)
1901
50.8 mm (2.0 in)
1902
27.9 mm (1.1 in)
1903
99.0 mm (3.9 in)
1928
11.4 mm (0.4 in)
1929
73.8 mm (2.9 in)
1930
40.9 mm (1.6 in)
1931
87.9 mm (3.5 in)
1932
114.1 mm (4.5 in)
1933
26.3 mm (1.0 in)
1934
24.6 mm (1.0 in)
1935
137.4 mm (5.4 in)
1936
4.0 mm (0.16 in)
1948
40.6 mm (1.6 in)
1949
64.3 mm (2.5 in)
1950
45.7 mm (1.8 in)
1951
69.4 mm (2.7 in)
1952
31.5 mm (1.2 in)
1953
47.5 mm (1.9 in)
1954
53.1 mm (2.1 in)
1955
62.5 mm (2.5 in)
1956
53.8 mm (2.1 in)
1957
52.3 mm (2.1 in)
1958
99.6 mm (3.9 in)
1959
50.9 mm (2.0 in)
1960
76.4 mm (3.0 in)
1961
59.9 mm (2.4 in)
1962
45.5 mm (1.8 in)
1963
51.5 mm (2.0 in)
1964
58.1 mm (2.3 in)
1965
135.9 mm (5.4 in)
1966
73.1 mm (2.9 in)
1967
65.6 mm (2.6 in)
1968
55.9 mm (2.2 in)
1969
68.6 mm (2.7 in)
1970
92.9 mm (3.7 in)
1971
68.0 mm (2.7 in)
1972
89.4 mm (3.5 in)
1973
37.9 mm (1.5 in)
1974
106.2 mm (4.2 in)
1975
77.9 mm (3.1 in)
1976
137.1 mm (5.4 in)
1977
82.5 mm (3.2 in)
1978
161.0 mm (6.3 in)
1979
100.4 mm (4.0 in)
1980
118.0 mm (4.6 in)
1981
57.9 mm (2.3 in)
1982
63.5 mm (2.5 in)
1983
81.0 mm (3.2 in)
1984
90.2 mm (3.6 in)
1985
41.2 mm (1.6 in)
1986
85.3 mm (3.4 in)
1987
74.9 mm (2.9 in)
1988
127.8 mm (5.0 in)
1989
42.6 mm (1.7 in)
1990
42.4 mm (1.7 in)
1991
96.5 mm (3.8 in)
1992
96.8 mm (3.8 in)
1993
97.8 mm (3.9 in)
1994
30.7 mm (1.2 in)
1995
62.5 mm (2.5 in)
1996
71.4 mm (2.8 in)
1997
90.7 mm (3.6 in)
1998
68.6 mm (2.7 in)
1999
122.2 mm (4.8 in)
2000
54.7 mm (2.2 in)
2001
81.3 mm (3.2 in)
2002
67.8 mm (2.7 in)
2003
58.9 mm (2.3 in)
2004
165.4 mm (6.5 in)
2005
89.8 mm (3.5 in)
2006
19.6 mm (0.8 in)
2007
56.1 mm (2.2 in)
2008
110.5 mm (4.4 in)
2009
63.3 mm (2.5 in)
2010
209.1 mm (8.2 in)
2011
27.2 mm (1.1 in)
2012
60.5 mm (2.4 in)
2013
60.2 mm (2.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Sanderson, 1897 to 2013. The record is 144 days in 1933, marked on the chart; the median year is 58 days.
Longest dry spell (CDD) at Sanderson by year
Year
Longest dry spell (CDD)
1897
42 days
1898
85 days
1900
62 days
1901
115 days
1902
101 days
1903
40 days
1928
16 days
1929
48 days
1930
62 days
1931
72 days
1932
63 days
1933
144 days
1934
111 days
1935
99 days
1936
30 days
1948
53 days
1949
66 days
1950
88 days
1951
57 days
1952
134 days
1953
54 days
1954
81 days
1955
101 days
1956
100 days
1957
33 days
1958
33 days
1959
47 days
1960
51 days
1961
60 days
1962
70 days
1963
58 days
1964
38 days
1965
66 days
1966
75 days
1967
30 days
1968
33 days
1969
44 days
1970
73 days
1971
105 days
1972
79 days
1973
85 days
1974
53 days
1975
50 days
1976
94 days
1977
46 days
1978
56 days
1979
79 days
1980
56 days
1981
70 days
1982
50 days
1983
39 days
1984
58 days
1985
39 days
1986
52 days
1987
36 days
1988
68 days
1989
54 days
1990
79 days
1991
52 days
1992
40 days
1993
40 days
1994
32 days
1995
43 days
1996
62 days
1997
37 days
1998
61 days
1999
86 days
2000
85 days
2001
55 days
2002
51 days
2003
50 days
2004
31 days
2005
58 days
2006
43 days
2007
10 days
2008
93 days
2009
61 days
2010
101 days
2011
111 days
2012
57 days
2013
82 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
45 years with a frost
Across 45 years with a frost, the median last spring frost at Sanderson falls on 22 March and the median first autumn frost on 11 November, which leaves a median of 238 days between them.
Fitted over all years, the growing season changes by 0.0 days per decade at this station.
Frost dates and growing season at Sanderson
Measure
Median, all years
Earliest period
Recent period (1971 to 2011)
Recent against earliest
Fitted trend
Last spring frost
22 March
n/a
21 March
n/a
-0.9 days per decade
First autumn frost
11 November
n/a
11 November
n/a
-0.9 days per decade
Growing days
238 days
n/a
237 days
n/a
0.0 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
68 years, 1900 to 2012
A day with at least 49.6 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 162.9 mm (6.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Sanderson: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
49.6 mm (2.0 in)
5 years
74.7 mm (2.9 in)
10 years
93.3 mm (3.7 in)
25 years
119.1 mm (4.7 in)
50 years
140.2 mm (5.5 in)
100 years
162.9 mm (6.4 in)
Longer than the 68 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, 68 years of values from 1900 to 2012.
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: 135.9 mm (5.4 in) in 1965; 129.5 mm (5.1 in) in 1978; 127.8 mm (5.0 in) in 1988.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Sanderson standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sanderson 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.