Record envelope, standing records and threshold days for Pecos (USC00416892), Texas, United States, with 97 years of record.
Key Facts for Pecos
Pecos (USC00416892) is a weather station in Texas, United States at 31.42 latitude and -103.50 longitude, 796 m (2,610 ft) above sea level.
The station reports from 1904 to 2000, 97 years of record.
1,464 records set at Pecos still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Pecos set a daily record high minimum temperature of 26.1 C (79.0 F) on 28 July 2000.
About the Station
Location: Texas, United States, 31.42 latitude, -103.50 longitude.
Elevation: 796 m (2,610 ft).
Period of record: 1904 to 2000, 97 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 Pecos. 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 Pecos, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
31.7 C (89.1 F)
-22.8 C (-9.0 F)
n/a
n/a
Feb
34.4 C (93.9 F)
-22.2 C (-8.0 F)
n/a
n/a
Mar
39.4 C (102.9 F)
-11.1 C (12.0 F)
n/a
n/a
Apr
41.1 C (106.0 F)
-4.4 C (24.1 F)
n/a
n/a
May
44.4 C (111.9 F)
-1.1 C (30.0 F)
n/a
n/a
Jun
47.8 C (118.0 F)
8.9 C (48.0 F)
n/a
n/a
Jul
46.7 C (116.1 F)
12.8 C (55.0 F)
n/a
n/a
Aug
45.0 C (113.0 F)
7.2 C (45.0 F)
n/a
n/a
Sep
43.3 C (109.9 F)
2.8 C (37.0 F)
n/a
n/a
Oct
41.1 C (106.0 F)
-3.9 C (25.0 F)
n/a
n/a
Nov
34.4 C (93.9 F)
-13.3 C (8.1 F)
n/a
n/a
Dec
31.7 C (89.1 F)
-17.2 C (1.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Pecos still stand. 1951 holds the most, with 94.
Standing records at Pecos by the year they were set
Year set
Standing records
1904
37
1913
2
1914
52
1915
17
1916
29
1934
18
1935
23
1936
13
1937
13
1938
17
1939
10
1940
21
1941
18
1942
9
1943
13
1944
12
1945
11
1946
28
1947
26
1948
39
1949
18
1950
20
1951
94
1952
33
1953
21
1954
16
1955
15
1956
19
1957
30
1958
20
1959
24
1960
20
1961
14
1962
26
1963
26
1964
8
1965
20
1966
13
1967
28
1968
15
1969
20
1970
21
1971
22
1972
30
1973
24
1974
19
1975
26
1976
23
1977
21
1978
17
1979
16
1980
25
1981
20
1982
18
1983
23
1984
21
1985
18
1986
20
1987
16
1988
10
1989
29
1990
14
1991
17
1992
5
1993
7
1994
6
1995
12
1996
18
1997
15
1998
16
1999
10
2000
17
All-Time Record Progression
6 new records
6 all-time records were set at Pecos between 11 January 1962 and 23 May 1992. Each dot is a new record.
When Pecos set new all-time records
Date
Kind
Detail
1962-01-11
Record low maximum temperature
Record low maximum temperature -11.1 C (12.0 F)
1962-01-11
Record low minimum temperature
Record low minimum temperature -22.8 C (-9.0 F)
1968-06-29
Record high maximum temperature
Record high maximum temperature 47.8 C (118.0 F)
1980-06-09
Record daily precipitation
Record daily precipitation 84.1 mm (3.3 in)
1987-08-28
Record daily precipitation
Record daily precipitation 111.0 mm (4.4 in)
1992-05-23
Record daily precipitation
Record daily precipitation 111.3 mm (4.4 in)
Wettest Day of Each Month
May: 111.3 mm (4.4 in)
The wettest day on record for each calendar month at Pecos. The most was 111.3 mm (4.4 in) on 23 May 1992.
Record daily precipitation for each month at Pecos
Month
Record daily precipitation (mm)
Date
Jan
25.4 mm (1.0 in)
6 January 1958
Feb
41.9 mm (1.6 in)
17 February 1989
Mar
38.1 mm (1.5 in)
31 March 1945
Apr
56.4 mm (2.2 in)
15 April 1981
May
111.3 mm (4.4 in)
23 May 1992
Jun
84.1 mm (3.3 in)
9 June 1980
Jul
76.2 mm (3.0 in)
26 July 1959
Aug
111.0 mm (4.4 in)
28 August 1987
Sep
75.7 mm (3.0 in)
17 September 1991
Oct
72.4 mm (2.9 in)
11 October 1940
Nov
24.6 mm (1.0 in)
4 November 1986
Dec
50.5 mm (2.0 in)
22 December 1986
Period of Record Coverage
1904 to 2000
Complete yearUnder 90 percent of days
72 years of record at Pecos, 1904 to 2000. 8 years have data for under 90 percent of days and are left out of rankings: 1904, 1913, 1934, 1937, 1946, 1952, 1999, 2000.
Cooler than the station meanWarmer than the station mean
One stripe for each of 59 complete years at Pecos, 1914 to 1998. Blue stripes are years cooler than the station's own mean of 18.2 C (64.8 F); red stripes are warmer. The coolest year was 1914, at 15.4 C (59.7 F), and the warmest was 1951, at 19.8 C (67.7 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Pecos as warming stripes, 1914 to 1998
Year
Annual mean temperature
Difference from the station mean
1914
15.4 C
-2.83 C
1915
17.7 C
-0.50 C
1916
18.7 C
+0.49 C
1935
17.4 C
-0.82 C
1938
18.2 C
+0.02 C
1939
18.7 C
+0.48 C
1940
17.8 C
-0.40 C
1941
17.9 C
-0.33 C
1942
17.7 C
-0.50 C
1943
18.3 C
+0.12 C
1944
17.9 C
-0.35 C
1948
18.9 C
+0.73 C
1949
18.4 C
+0.20 C
1950
19.5 C
+1.32 C
1951
19.8 C
+1.64 C
1954
19.0 C
+0.83 C
1955
18.2 C
+0.01 C
1956
18.8 C
+0.62 C
1957
18.8 C
+0.56 C
1958
18.1 C
-0.06 C
1959
17.9 C
-0.29 C
1960
17.6 C
-0.57 C
1961
17.6 C
-0.60 C
1962
19.1 C
+0.85 C
1963
18.8 C
+0.58 C
1964
18.3 C
+0.10 C
1966
18.1 C
-0.11 C
1967
18.7 C
+0.45 C
1968
17.8 C
-0.41 C
1969
18.4 C
+0.16 C
1970
17.7 C
-0.51 C
1971
18.4 C
+0.18 C
1972
18.6 C
+0.41 C
1973
17.7 C
-0.52 C
1974
18.4 C
+0.18 C
1975
17.7 C
-0.54 C
1976
17.5 C
-0.75 C
1977
19.2 C
+1.04 C
1978
18.3 C
+0.05 C
1979
17.3 C
-0.94 C
1980
18.3 C
+0.13 C
1981
18.4 C
+0.15 C
1982
18.6 C
+0.39 C
1983
18.4 C
+0.21 C
1984
18.0 C
-0.21 C
1985
18.3 C
+0.06 C
1986
18.5 C
+0.30 C
1987
17.2 C
-0.97 C
1988
17.6 C
-0.59 C
1989
18.2 C
-0.05 C
1990
18.1 C
-0.10 C
1991
17.6 C
-0.61 C
1992
17.7 C
-0.53 C
1993
18.1 C
-0.15 C
1994
19.0 C
+0.84 C
1995
18.7 C
+0.52 C
1996
18.5 C
+0.27 C
1997
17.7 C
-0.53 C
1998
19.3 C
+1.08 C
The fitted trend in annual mean temperature here over 1914 to 1998 is 0.04 C (-0.04 to 0.13) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.2) per decade. The slope is a straight line fitted to 59 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Pecos
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.04 C (-0.04 to 0.13) per decade
0.1 F (-0.1 to 0.2) per decade
1914 to 1998
59
Not clearly different from zero
Mean daily maximum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.4) per decade
1914 to 1998
59
Not clearly different from zero
Mean daily minimum
0.02 C (-0.07 to 0.10) per decade
0.03 F (-0.12 to 0.17) per decade
1914 to 1998
59
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
1904 to 2000
Yearly extremes at Pecos: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
47.8 C (118.0 F)
1968
43.3 C (109.9 F)
72
Coldest night (TNn)
-22.8 C (-9.0 F)
1962
-11.7 C (10.9 F)
72
Wettest day (Rx1day)
111.3 mm (4.4 in)
1992
37.7 mm (1.5 in)
72
Wettest five days (Rx5day)
153.6 mm (6.0 in)
1940
51.2 mm (2.0 in)
72
Longest dry spell (CDD)
148 days
1971
66 days
72
Hottest day (TXx)
The hottest day of the year at Pecos, 1904 to 2000. The record is 47.8 C (118.0 F) in 1968, marked on the chart; the median year is 43.3 C (109.9 F).
Hottest day (TXx) at Pecos by year
Year
Hottest day (TXx)
1904
41.1 C (106.0 F)
1913
28.3 C (82.9 F)
1914
40.0 C (104.0 F)
1915
43.3 C (109.9 F)
1916
42.8 C (109.0 F)
1934
40.6 C (105.1 F)
1935
43.9 C (111.0 F)
1936
41.7 C (107.1 F)
1937
42.2 C (108.0 F)
1938
41.1 C (106.0 F)
1939
43.9 C (111.0 F)
1940
41.1 C (106.0 F)
1941
38.3 C (100.9 F)
1942
42.2 C (108.0 F)
1943
42.2 C (108.0 F)
1944
44.4 C (111.9 F)
1945
41.7 C (107.1 F)
1946
42.2 C (108.0 F)
1947
42.8 C (109.0 F)
1948
45.0 C (113.0 F)
1949
42.2 C (108.0 F)
1950
41.7 C (107.1 F)
1951
44.4 C (111.9 F)
1952
42.8 C (109.0 F)
1953
44.4 C (111.9 F)
1954
43.9 C (111.0 F)
1955
43.3 C (109.9 F)
1956
43.3 C (109.9 F)
1957
45.6 C (114.1 F)
1958
46.7 C (116.1 F)
1959
43.3 C (109.9 F)
1960
45.6 C (114.1 F)
1961
41.7 C (107.1 F)
1962
42.8 C (109.0 F)
1963
42.2 C (108.0 F)
1964
43.3 C (109.9 F)
1965
42.2 C (108.0 F)
1966
43.3 C (109.9 F)
1967
42.2 C (108.0 F)
1968
47.8 C (118.0 F)
1969
43.9 C (111.0 F)
1970
42.2 C (108.0 F)
1971
43.3 C (109.9 F)
1972
45.0 C (113.0 F)
1973
44.4 C (111.9 F)
1974
43.9 C (111.0 F)
1975
43.3 C (109.9 F)
1976
46.1 C (115.0 F)
1977
45.6 C (114.1 F)
1978
44.4 C (111.9 F)
1979
41.7 C (107.1 F)
1980
44.4 C (111.9 F)
1981
43.3 C (109.9 F)
1982
42.2 C (108.0 F)
1983
43.9 C (111.0 F)
1984
41.7 C (107.1 F)
1985
43.3 C (109.9 F)
1986
43.3 C (109.9 F)
1987
42.8 C (109.0 F)
1988
41.1 C (106.0 F)
1989
44.4 C (111.9 F)
1990
43.9 C (111.0 F)
1991
41.1 C (106.0 F)
1992
40.0 C (104.0 F)
1993
40.6 C (105.1 F)
1994
47.2 C (117.0 F)
1995
43.9 C (111.0 F)
1996
43.3 C (109.9 F)
1997
41.7 C (107.1 F)
1998
45.0 C (113.0 F)
1999
45.0 C (113.0 F)
2000
44.4 C (111.9 F)
Coldest night (TNn)
The coldest night of the year at Pecos, 1904 to 2000. The record is -22.8 C (-9.0 F) in 1962, marked on the chart; the median year is -11.7 C (10.9 F).
Coldest night (TNn) at Pecos by year
Year
Coldest night (TNn)
1904
-13.3 C (8.1 F)
1913
-6.7 C (19.9 F)
1914
-11.7 C (10.9 F)
1915
-8.9 C (16.0 F)
1916
-12.2 C (10.0 F)
1934
-10.0 C (14.0 F)
1935
-12.8 C (9.0 F)
1936
-12.2 C (10.0 F)
1937
-12.2 C (10.0 F)
1938
-11.7 C (10.9 F)
1939
-8.3 C (17.1 F)
1940
-14.4 C (6.1 F)
1941
-6.7 C (19.9 F)
1942
-10.0 C (14.0 F)
1943
-12.2 C (10.0 F)
1944
-16.7 C (1.9 F)
1945
-7.2 C (19.0 F)
1946
-7.8 C (18.0 F)
1947
-19.4 C (-2.9 F)
1948
-20.6 C (-5.1 F)
1949
-20.0 C (-4.0 F)
1950
-11.1 C (12.0 F)
1951
-17.8 C (0.0 F)
1952
-8.9 C (16.0 F)
1953
-14.4 C (6.1 F)
1954
-12.2 C (10.0 F)
1955
-12.2 C (10.0 F)
1956
-11.1 C (12.0 F)
1957
-11.7 C (10.9 F)
1958
-11.1 C (12.0 F)
1959
-12.2 C (10.0 F)
1960
-13.9 C (7.0 F)
1961
-8.3 C (17.1 F)
1962
-22.8 C (-9.0 F)
1963
-12.8 C (9.0 F)
1964
-14.4 C (6.1 F)
1965
-8.9 C (16.0 F)
1966
-11.1 C (12.0 F)
1967
-14.4 C (6.1 F)
1968
-10.0 C (14.0 F)
1969
-8.3 C (17.1 F)
1970
-12.2 C (10.0 F)
1971
-12.8 C (9.0 F)
1972
-16.1 C (3.0 F)
1973
-13.9 C (7.0 F)
1974
-10.6 C (12.9 F)
1975
-9.4 C (15.1 F)
1976
-13.3 C (8.1 F)
1977
-12.8 C (9.0 F)
1978
-11.7 C (10.9 F)
1979
-13.9 C (7.0 F)
1980
-8.3 C (17.1 F)
1981
-12.2 C (10.0 F)
1982
-10.6 C (12.9 F)
1983
-16.7 C (1.9 F)
1984
-7.2 C (19.0 F)
1985
-22.2 C (-8.0 F)
1986
-11.1 C (12.0 F)
1987
-12.2 C (10.0 F)
1988
-10.0 C (14.0 F)
1989
-17.2 C (1.0 F)
1990
-11.1 C (12.0 F)
1991
-7.8 C (18.0 F)
1992
-8.9 C (16.0 F)
1993
-8.3 C (17.1 F)
1994
-8.9 C (16.0 F)
1995
-7.8 C (18.0 F)
1996
-12.2 C (10.0 F)
1997
-10.0 C (14.0 F)
1998
-7.8 C (18.0 F)
1999
-8.9 C (16.0 F)
2000
10.0 C (50.0 F)
Wettest day (Rx1day)
The wettest day of the year at Pecos, 1904 to 2000. The record is 111.3 mm (4.4 in) in 1992, marked on the chart; the median year is 37.7 mm (1.5 in).
Wettest day (Rx1day) at Pecos by year
Year
Wettest day (Rx1day)
1904
25.4 mm (1.0 in)
1913
10.9 mm (0.4 in)
1914
24.1 mm (0.9 in)
1915
54.1 mm (2.1 in)
1916
38.9 mm (1.5 in)
1934
18.0 mm (0.7 in)
1935
37.1 mm (1.5 in)
1936
30.7 mm (1.2 in)
1937
33.8 mm (1.3 in)
1938
30.5 mm (1.2 in)
1939
22.6 mm (0.9 in)
1940
72.4 mm (2.9 in)
1941
45.0 mm (1.8 in)
1942
47.8 mm (1.9 in)
1943
37.3 mm (1.5 in)
1944
26.2 mm (1.0 in)
1945
38.1 mm (1.5 in)
1946
16.5 mm (0.6 in)
1947
76.2 mm (3.0 in)
1948
50.8 mm (2.0 in)
1949
23.1 mm (0.9 in)
1950
43.2 mm (1.7 in)
1951
29.7 mm (1.2 in)
1952
57.2 mm (2.3 in)
1953
40.6 mm (1.6 in)
1954
27.9 mm (1.1 in)
1955
64.8 mm (2.6 in)
1956
17.5 mm (0.7 in)
1957
24.1 mm (0.9 in)
1958
44.5 mm (1.8 in)
1959
76.2 mm (3.0 in)
1960
34.5 mm (1.4 in)
1961
36.6 mm (1.4 in)
1962
22.9 mm (0.9 in)
1963
10.2 mm (0.4 in)
1964
24.6 mm (1.0 in)
1965
43.2 mm (1.7 in)
1966
59.2 mm (2.3 in)
1967
24.4 mm (1.0 in)
1968
73.4 mm (2.9 in)
1969
43.4 mm (1.7 in)
1970
31.5 mm (1.2 in)
1971
47.0 mm (1.9 in)
1972
46.0 mm (1.8 in)
1973
23.6 mm (0.9 in)
1974
59.2 mm (2.3 in)
1975
56.6 mm (2.2 in)
1976
19.3 mm (0.8 in)
1977
24.6 mm (1.0 in)
1978
56.9 mm (2.2 in)
1979
21.3 mm (0.8 in)
1980
84.1 mm (3.3 in)
1981
66.8 mm (2.6 in)
1982
27.2 mm (1.1 in)
1983
30.2 mm (1.2 in)
1984
37.3 mm (1.5 in)
1985
32.8 mm (1.3 in)
1986
50.5 mm (2.0 in)
1987
111.0 mm (4.4 in)
1988
66.5 mm (2.6 in)
1989
70.1 mm (2.8 in)
1990
45.2 mm (1.8 in)
1991
75.7 mm (3.0 in)
1992
111.3 mm (4.4 in)
1993
23.9 mm (0.9 in)
1994
45.7 mm (1.8 in)
1995
39.6 mm (1.6 in)
1996
45.5 mm (1.8 in)
1997
27.9 mm (1.1 in)
1998
29.5 mm (1.2 in)
1999
30.0 mm (1.2 in)
2000
50.0 mm (2.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Pecos, 1904 to 2000. The record is 153.6 mm (6.0 in) in 1940, marked on the chart; the median year is 51.2 mm (2.0 in).
Wettest five days (Rx5day) at Pecos by year
Year
Wettest five days (Rx5day)
1904
44.5 mm (1.8 in)
1913
10.9 mm (0.4 in)
1914
74.2 mm (2.9 in)
1915
70.6 mm (2.8 in)
1916
45.5 mm (1.8 in)
1934
34.7 mm (1.4 in)
1935
49.6 mm (2.0 in)
1936
49.5 mm (1.9 in)
1937
51.4 mm (2.0 in)
1938
33.8 mm (1.3 in)
1939
37.9 mm (1.5 in)
1940
153.6 mm (6.0 in)
1941
61.7 mm (2.4 in)
1942
98.4 mm (3.9 in)
1943
54.8 mm (2.2 in)
1944
44.5 mm (1.8 in)
1945
50.9 mm (2.0 in)
1946
16.5 mm (0.6 in)
1947
94.0 mm (3.7 in)
1948
50.8 mm (2.0 in)
1949
38.0 mm (1.5 in)
1950
44.2 mm (1.7 in)
1951
29.7 mm (1.2 in)
1952
61.0 mm (2.4 in)
1953
40.6 mm (1.6 in)
1954
47.2 mm (1.9 in)
1955
64.8 mm (2.6 in)
1956
17.5 mm (0.7 in)
1957
37.3 mm (1.5 in)
1958
71.7 mm (2.8 in)
1959
76.2 mm (3.0 in)
1960
62.2 mm (2.4 in)
1961
42.2 mm (1.7 in)
1962
33.1 mm (1.3 in)
1963
19.6 mm (0.8 in)
1964
36.1 mm (1.4 in)
1965
56.7 mm (2.2 in)
1966
152.7 mm (6.0 in)
1967
24.4 mm (1.0 in)
1968
78.7 mm (3.1 in)
1969
60.1 mm (2.4 in)
1970
56.1 mm (2.2 in)
1971
76.0 mm (3.0 in)
1972
46.0 mm (1.8 in)
1973
62.4 mm (2.5 in)
1974
137.7 mm (5.4 in)
1975
59.4 mm (2.3 in)
1976
32.8 mm (1.3 in)
1977
28.4 mm (1.1 in)
1978
142.7 mm (5.6 in)
1979
37.8 mm (1.5 in)
1980
120.5 mm (4.7 in)
1981
82.4 mm (3.2 in)
1982
51.0 mm (2.0 in)
1983
35.0 mm (1.4 in)
1984
63.2 mm (2.5 in)
1985
38.7 mm (1.5 in)
1986
77.2 mm (3.0 in)
1987
128.5 mm (5.1 in)
1988
100.6 mm (4.0 in)
1989
71.6 mm (2.8 in)
1990
54.2 mm (2.1 in)
1991
113.8 mm (4.5 in)
1992
153.3 mm (6.0 in)
1993
44.0 mm (1.7 in)
1994
53.1 mm (2.1 in)
1995
69.0 mm (2.7 in)
1996
58.5 mm (2.3 in)
1997
27.9 mm (1.1 in)
1998
30.5 mm (1.2 in)
1999
30.8 mm (1.2 in)
2000
50.8 mm (2.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Pecos, 1904 to 2000. The record is 148 days in 1971, marked on the chart; the median year is 66 days.
Longest dry spell (CDD) at Pecos by year
Year
Longest dry spell (CDD)
1904
136 days
1913
15 days
1914
47 days
1915
66 days
1916
83 days
1934
58 days
1935
79 days
1936
61 days
1937
44 days
1938
54 days
1939
67 days
1940
48 days
1941
36 days
1942
36 days
1943
57 days
1944
72 days
1945
84 days
1946
92 days
1947
127 days
1948
111 days
1949
63 days
1950
73 days
1951
124 days
1952
128 days
1953
111 days
1954
77 days
1955
109 days
1956
61 days
1957
64 days
1958
62 days
1959
38 days
1960
51 days
1961
100 days
1962
69 days
1963
55 days
1964
78 days
1965
70 days
1966
85 days
1967
81 days
1968
53 days
1969
44 days
1970
73 days
1971
148 days
1972
73 days
1973
86 days
1974
54 days
1975
65 days
1976
79 days
1977
43 days
1978
44 days
1979
70 days
1980
54 days
1981
70 days
1982
97 days
1983
41 days
1984
133 days
1985
59 days
1986
72 days
1987
36 days
1988
41 days
1989
99 days
1990
43 days
1991
45 days
1992
44 days
1993
52 days
1994
42 days
1995
47 days
1996
84 days
1997
42 days
1998
125 days
1999
76 days
2000
31 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
59 years with a frost
Across 59 years with a frost, the median last spring frost at Pecos falls on 29 March and the median first autumn frost on 6 November, which leaves a median of 223 days between them.
Fitted over all years, the growing season changes by +0.7 days per decade at this station.
Frost dates and growing season at Pecos
Measure
Median, all years
Earliest period
Recent period (1969 to 1998)
Recent against earliest
Fitted trend
Last spring frost
29 March
n/a
30 March
n/a
-1.6 days per decade
First autumn frost
6 November
n/a
5 November
n/a
-0.8 days per decade
Growing days
223 days
n/a
221 days
n/a
+0.7 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
67 years, 1914 to 1998
A day with at least 39.0 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 118.3 mm (4.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Pecos: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
39.0 mm (1.5 in)
5 years
57.6 mm (2.3 in)
10 years
70.9 mm (2.8 in)
25 years
88.9 mm (3.5 in)
50 years
103.3 mm (4.1 in)
100 years
118.3 mm (4.7 in)
Longer than the 67 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, 67 years of values from 1914 to 1998.
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: 111.3 mm (4.4 in) in 1992; 111.0 mm (4.4 in) in 1987; 84.1 mm (3.3 in) in 1980.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Pecos, at 1966 and 1984. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1966 ran 0.4 C (0.8 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1984 ran 0.2 C (0.4 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Pecos, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1966
+0.4
+0.8
likely
5
1984
-0.2
-0.4
possible
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 Pecos standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Pecos 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.