Record envelope, standing records and threshold days for Sierra Ancha (USC00027876), Arizona, United States, with 67 years of record.
Key Facts for Sierra Ancha
Sierra Ancha (USC00027876) is a weather station in Arizona, United States at 33.80 latitude and -110.97 longitude, 1,555 m (5,100 ft) above sea level.
The station reports from 1913 to 1979, 67 years of record.
1,464 records set at Sierra Ancha still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Sierra Ancha tied a daily record high minimum temperature of 18.9 C (66.0 F) on 25 September 1979.
About the Station
Location: Arizona, United States, 33.80 latitude, -110.97 longitude.
Elevation: 1,555 m (5,100 ft).
Period of record: 1913 to 1979, 67 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 Sierra Ancha. 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 Sierra Ancha, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
24.4 C (75.9 F)
-17.8 C (0.0 F)
n/a
n/a
Feb
26.1 C (79.0 F)
-12.2 C (10.0 F)
n/a
n/a
Mar
28.9 C (84.0 F)
-11.7 C (10.9 F)
n/a
n/a
Apr
32.8 C (91.0 F)
-8.9 C (16.0 F)
n/a
n/a
May
36.1 C (97.0 F)
-5.6 C (21.9 F)
n/a
n/a
Jun
40.6 C (105.1 F)
-1.1 C (30.0 F)
n/a
n/a
Jul
40.0 C (104.0 F)
1.1 C (34.0 F)
n/a
n/a
Aug
39.4 C (102.9 F)
3.3 C (37.9 F)
n/a
n/a
Sep
39.4 C (102.9 F)
-1.7 C (28.9 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-6.7 C (19.9 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-11.1 C (12.0 F)
n/a
n/a
Dec
25.6 C (78.1 F)
-16.7 C (1.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Sierra Ancha still stand. 1917 holds the most, with 121.
Standing records at Sierra Ancha by the year they were set
Year set
Standing records
1914
49
1915
69
1916
82
1917
121
1918
46
1935
2
1936
40
1937
34
1938
35
1939
25
1940
28
1941
12
1942
16
1943
31
1944
22
1945
19
1946
38
1947
32
1948
33
1949
42
1950
50
1951
21
1952
14
1953
18
1954
17
1955
30
1956
24
1957
21
1959
18
1960
27
1961
8
1962
31
1963
22
1964
17
1965
23
1966
14
1967
24
1968
14
1969
22
1970
25
1971
42
1972
60
1973
30
1974
20
1975
18
1976
30
1977
12
1978
20
1979
16
All-Time Record Progression
5 new records
5 all-time records were set at Sierra Ancha between 15 December 1967 and 19 October 1972. Each dot is a new record.
When Sierra Ancha set new all-time records
Date
Kind
Detail
1967-12-15
Record snow depth
Record snow depth 61.0 cm (24.0 in)
1967-12-20
Record snow depth
Record snow depth 76.2 cm (30.0 in)
1970-06-26
Record high maximum temperature
Record high maximum temperature 40.6 C (105.1 F)
1970-09-05
Record daily precipitation
Record daily precipitation 121.2 mm (4.8 in)
1972-10-19
Record daily precipitation
Record daily precipitation 121.7 mm (4.8 in)
Wettest Day of Each Month
Oct: 121.7 mm (4.8 in)
The wettest day on record for each calendar month at Sierra Ancha. The most was 121.7 mm (4.8 in) on 19 October 1972.
Record daily precipitation for each month at Sierra Ancha
Month
Record daily precipitation (mm)
Date
Jan
95.8 mm (3.8 in)
25 January 1918
Feb
80.0 mm (3.1 in)
7 February 1937
Mar
90.2 mm (3.6 in)
1 March 1978
Apr
53.3 mm (2.1 in)
17 April 1917
May
45.2 mm (1.8 in)
10 May 1944
Jun
47.5 mm (1.9 in)
22 June 1950
Jul
87.4 mm (3.4 in)
16 July 1965
Aug
116.3 mm (4.6 in)
28 August 1951
Sep
121.2 mm (4.8 in)
5 September 1970
Oct
121.7 mm (4.8 in)
19 October 1972
Nov
72.6 mm (2.9 in)
23 November 1965
Dec
83.1 mm (3.3 in)
18 December 1978
Period of Record Coverage
1914 to 1979
Complete yearUnder 90 percent of days
49 years of record at Sierra Ancha, 1914 to 1979. 4 years have data for under 90 percent of days and are left out of rankings: 1914, 1918, 1935, 1979.
Cooler than the station meanWarmer than the station mean
One stripe for each of 42 complete years at Sierra Ancha, 1916 to 1978. Blue stripes are years cooler than the station's own mean of 15.2 C (59.4 F); red stripes are warmer. The coolest year was 1916, at 11.4 C (52.6 F), and the warmest was 1972, at 16.6 C (62.0 F). The strongest colour marks a difference of 3.9 C (7.0 F).
Annual mean temperature at Sierra Ancha as warming stripes, 1916 to 1978
Year
Annual mean temperature
Difference from the station mean
1916
11.4 C
-3.81 C
1936
16.2 C
+0.97 C
1937
15.7 C
+0.51 C
1938
15.9 C
+0.68 C
1939
15.5 C
+0.31 C
1940
16.5 C
+1.25 C
1941
14.5 C
-0.77 C
1942
15.6 C
+0.40 C
1943
16.4 C
+1.14 C
1944
14.7 C
-0.50 C
1945
15.1 C
-0.14 C
1946
15.7 C
+0.51 C
1947
15.9 C
+0.68 C
1948
15.4 C
+0.19 C
1949
14.7 C
-0.49 C
1950
16.6 C
+1.36 C
1951
14.8 C
-0.48 C
1952
14.8 C
-0.40 C
1953
15.2 C
-0.03 C
1954
16.2 C
+0.98 C
1955
14.9 C
-0.34 C
1956
15.9 C
+0.62 C
1957
15.0 C
-0.19 C
1959
15.7 C
+0.48 C
1960
15.3 C
+0.06 C
1961
15.3 C
+0.02 C
1962
15.8 C
+0.54 C
1963
15.4 C
+0.13 C
1965
15.0 C
-0.21 C
1966
15.5 C
+0.26 C
1967
15.0 C
-0.27 C
1968
15.0 C
-0.25 C
1969
15.5 C
+0.23 C
1970
15.7 C
+0.48 C
1971
15.5 C
+0.30 C
1972
16.6 C
+1.41 C
1973
15.4 C
+0.19 C
1974
15.5 C
+0.24 C
1975
14.0 C
-1.22 C
1976
12.9 C
-2.36 C
1977
14.1 C
-1.09 C
1978
13.9 C
-1.34 C
The fitted trend in annual mean temperature here over 1916 to 1978 is -0.01 C (-0.23 to 0.21) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.02 F (-0.41 to 0.37) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Sierra Ancha
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.01 C (-0.23 to 0.21) per decade
-0.02 F (-0.41 to 0.37) per decade
1916 to 1978
42
Not clearly different from zero
Mean daily maximum
-0.3 C (-0.5 to -0.1) per decade
-0.5 F (-0.8 to -0.1) per decade
1916 to 1978
42
Fall
Mean daily minimum
0.24 C (-0.03 to 0.50) per decade
0.4 F (-0.1 to 0.9) per decade
1916 to 1978
42
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
1913 to 1979
Yearly extremes at Sierra Ancha: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.6 C (105.1 F)
1970
38.9 C (102.0 F)
49
Coldest night (TNn)
-17.8 C (0.0 F)
1917
-10.6 C (12.9 F)
49
Wettest day (Rx1day)
121.7 mm (4.8 in)
1972
57.0 mm (2.2 in)
50
Wettest five days (Rx5day)
256.0 mm (10.1 in)
1978
100.3 mm (3.9 in)
50
Longest dry spell (CDD)
148 days
1972
52 days
50
Hottest day (TXx)
The hottest day of the year at Sierra Ancha, 1913 to 1979. The record is 40.6 C (105.1 F) in 1970, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Sierra Ancha by year
Year
Hottest day (TXx)
1913
n/a
1914
40.0 C (104.0 F)
1915
33.9 C (93.0 F)
1916
35.6 C (96.1 F)
1917
35.6 C (96.1 F)
1918
33.9 C (93.0 F)
1935
30.6 C (87.1 F)
1936
40.0 C (104.0 F)
1937
38.9 C (102.0 F)
1938
39.4 C (102.9 F)
1939
38.9 C (102.0 F)
1940
40.0 C (104.0 F)
1941
36.1 C (97.0 F)
1942
39.4 C (102.9 F)
1943
40.0 C (104.0 F)
1944
38.9 C (102.0 F)
1945
38.9 C (102.0 F)
1946
38.9 C (102.0 F)
1947
39.4 C (102.9 F)
1948
38.9 C (102.0 F)
1949
36.7 C (98.1 F)
1950
38.9 C (102.0 F)
1951
37.8 C (100.0 F)
1952
36.7 C (98.1 F)
1953
39.4 C (102.9 F)
1954
37.2 C (99.0 F)
1955
39.4 C (102.9 F)
1956
39.4 C (102.9 F)
1957
38.9 C (102.0 F)
1959
37.8 C (100.0 F)
1960
38.3 C (100.9 F)
1961
38.9 C (102.0 F)
1962
38.9 C (102.0 F)
1963
37.8 C (100.0 F)
1964
37.2 C (99.0 F)
1965
37.2 C (99.0 F)
1966
37.2 C (99.0 F)
1967
39.4 C (102.9 F)
1968
37.8 C (100.0 F)
1969
38.3 C (100.9 F)
1970
40.6 C (105.1 F)
1971
39.4 C (102.9 F)
1972
40.0 C (104.0 F)
1973
39.4 C (102.9 F)
1974
40.0 C (104.0 F)
1975
36.1 C (97.0 F)
1976
35.6 C (96.1 F)
1977
36.1 C (97.0 F)
1978
33.9 C (93.0 F)
1979
37.2 C (99.0 F)
Coldest night (TNn)
The coldest night of the year at Sierra Ancha, 1913 to 1979. The record is -17.8 C (0.0 F) in 1917, marked on the chart; the median year is -10.6 C (12.9 F).
Coldest night (TNn) at Sierra Ancha by year
Year
Coldest night (TNn)
1913
n/a
1914
-16.7 C (1.9 F)
1915
-16.1 C (3.0 F)
1916
-16.1 C (3.0 F)
1917
-17.8 C (0.0 F)
1918
-16.1 C (3.0 F)
1935
-3.3 C (26.1 F)
1936
-5.6 C (21.9 F)
1937
-16.1 C (3.0 F)
1938
-7.2 C (19.0 F)
1939
-12.2 C (10.0 F)
1940
-8.9 C (16.0 F)
1941
-10.0 C (14.0 F)
1942
-8.3 C (17.1 F)
1943
-10.6 C (12.9 F)
1944
-7.2 C (19.0 F)
1945
-8.3 C (17.1 F)
1946
-8.9 C (16.0 F)
1947
-10.6 C (12.9 F)
1948
-11.7 C (10.9 F)
1949
-14.4 C (6.1 F)
1950
-11.1 C (12.0 F)
1951
-8.9 C (16.0 F)
1952
-8.3 C (17.1 F)
1953
-9.4 C (15.1 F)
1954
-9.4 C (15.1 F)
1955
-11.1 C (12.0 F)
1956
-10.0 C (14.0 F)
1957
-5.0 C (23.0 F)
1959
-6.1 C (21.0 F)
1960
-12.2 C (10.0 F)
1961
-6.1 C (21.0 F)
1962
-13.3 C (8.1 F)
1963
-17.2 C (1.0 F)
1964
-9.4 C (15.1 F)
1965
-11.7 C (10.9 F)
1966
-11.7 C (10.9 F)
1967
-10.6 C (12.9 F)
1968
-12.8 C (9.0 F)
1969
-6.7 C (19.9 F)
1970
-9.4 C (15.1 F)
1971
-13.9 C (7.0 F)
1972
-6.7 C (19.9 F)
1973
-6.7 C (19.9 F)
1974
-8.3 C (17.1 F)
1975
-11.1 C (12.0 F)
1976
-11.7 C (10.9 F)
1977
-11.7 C (10.9 F)
1978
-14.4 C (6.1 F)
1979
-13.3 C (8.1 F)
Wettest day (Rx1day)
The wettest day of the year at Sierra Ancha, 1913 to 1979. The record is 121.7 mm (4.8 in) in 1972, marked on the chart; the median year is 57.0 mm (2.2 in).
Wettest day (Rx1day) at Sierra Ancha by year
Year
Wettest day (Rx1day)
1913
23.1 mm (0.9 in)
1914
62.2 mm (2.4 in)
1915
59.7 mm (2.4 in)
1916
71.4 mm (2.8 in)
1917
58.4 mm (2.3 in)
1918
95.8 mm (3.8 in)
1935
39.4 mm (1.6 in)
1936
54.1 mm (2.1 in)
1937
80.0 mm (3.1 in)
1938
54.4 mm (2.1 in)
1939
67.6 mm (2.7 in)
1940
45.5 mm (1.8 in)
1941
61.2 mm (2.4 in)
1942
49.5 mm (1.9 in)
1943
85.3 mm (3.4 in)
1944
48.3 mm (1.9 in)
1945
45.0 mm (1.8 in)
1946
88.1 mm (3.5 in)
1947
34.8 mm (1.4 in)
1948
47.8 mm (1.9 in)
1949
35.1 mm (1.4 in)
1950
47.5 mm (1.9 in)
1951
116.3 mm (4.6 in)
1952
42.2 mm (1.7 in)
1953
55.6 mm (2.2 in)
1954
74.4 mm (2.9 in)
1955
73.9 mm (2.9 in)
1956
42.2 mm (1.7 in)
1957
64.8 mm (2.6 in)
1959
104.4 mm (4.1 in)
1960
43.2 mm (1.7 in)
1961
47.5 mm (1.9 in)
1962
33.8 mm (1.3 in)
1963
72.1 mm (2.8 in)
1964
45.0 mm (1.8 in)
1965
87.4 mm (3.4 in)
1966
58.4 mm (2.3 in)
1967
43.7 mm (1.7 in)
1968
45.2 mm (1.8 in)
1969
40.6 mm (1.6 in)
1970
121.2 mm (4.8 in)
1971
66.8 mm (2.6 in)
1972
121.7 mm (4.8 in)
1973
67.3 mm (2.6 in)
1974
61.0 mm (2.4 in)
1975
64.8 mm (2.6 in)
1976
46.7 mm (1.8 in)
1977
30.5 mm (1.2 in)
1978
90.2 mm (3.6 in)
1979
47.0 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Sierra Ancha, 1913 to 1979. The record is 256.0 mm (10.1 in) in 1978, marked on the chart; the median year is 100.3 mm (3.9 in).
Wettest five days (Rx5day) at Sierra Ancha by year
Year
Wettest five days (Rx5day)
1913
61.0 mm (2.4 in)
1914
148.8 mm (5.9 in)
1915
127.0 mm (5.0 in)
1916
200.2 mm (7.9 in)
1917
101.8 mm (4.0 in)
1918
174.5 mm (6.9 in)
1935
68.1 mm (2.7 in)
1936
102.4 mm (4.0 in)
1937
83.8 mm (3.3 in)
1938
92.5 mm (3.6 in)
1939
108.5 mm (4.3 in)
1940
78.5 mm (3.1 in)
1941
140.8 mm (5.5 in)
1942
61.2 mm (2.4 in)
1943
98.8 mm (3.9 in)
1944
133.9 mm (5.3 in)
1945
87.2 mm (3.4 in)
1946
165.4 mm (6.5 in)
1947
54.8 mm (2.2 in)
1948
94.0 mm (3.7 in)
1949
87.7 mm (3.5 in)
1950
52.8 mm (2.1 in)
1951
203.7 mm (8.0 in)
1952
69.6 mm (2.7 in)
1953
87.7 mm (3.5 in)
1954
171.7 mm (6.8 in)
1955
111.2 mm (4.4 in)
1956
47.5 mm (1.9 in)
1957
136.4 mm (5.4 in)
1959
198.9 mm (7.8 in)
1960
71.6 mm (2.8 in)
1961
50.1 mm (2.0 in)
1962
102.8 mm (4.0 in)
1963
132.3 mm (5.2 in)
1964
116.7 mm (4.6 in)
1965
122.2 mm (4.8 in)
1966
70.2 mm (2.8 in)
1967
121.2 mm (4.8 in)
1968
74.4 mm (2.9 in)
1969
71.3 mm (2.8 in)
1970
169.2 mm (6.7 in)
1971
103.1 mm (4.1 in)
1972
207.2 mm (8.2 in)
1973
96.5 mm (3.8 in)
1974
86.2 mm (3.4 in)
1975
95.3 mm (3.8 in)
1976
90.7 mm (3.6 in)
1977
58.2 mm (2.3 in)
1978
256.0 mm (10.1 in)
1979
110.5 mm (4.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Sierra Ancha, 1913 to 1979. The record is 148 days in 1972, marked on the chart; the median year is 52 days.
Longest dry spell (CDD) at Sierra Ancha by year
Year
Longest dry spell (CDD)
1913
10 days
1914
37 days
1915
43 days
1916
63 days
1917
70 days
1918
35 days
1935
38 days
1936
46 days
1937
54 days
1938
86 days
1939
67 days
1940
28 days
1941
20 days
1942
62 days
1943
37 days
1944
49 days
1945
69 days
1946
86 days
1947
37 days
1948
63 days
1949
27 days
1950
52 days
1951
57 days
1952
39 days
1953
80 days
1954
67 days
1955
55 days
1956
52 days
1957
33 days
1959
43 days
1960
32 days
1961
65 days
1962
31 days
1963
83 days
1964
55 days
1965
34 days
1966
85 days
1967
41 days
1968
74 days
1969
64 days
1970
53 days
1971
68 days
1972
148 days
1973
66 days
1974
72 days
1975
38 days
1976
49 days
1977
48 days
1978
32 days
1979
42 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
42 years with a frost
Across 42 years with a frost, the median last spring frost at Sierra Ancha falls on 15 April and the median first autumn frost on 7 November, which leaves a median of 212 days between them.
Fitted over all years, the growing season changes by +2.9 days per decade at this station.
Frost dates and growing season at Sierra Ancha
Measure
Median, all years
Earliest period
Recent period (1947 to 1978)
Recent against earliest
Fitted trend
Last spring frost
15 April
n/a
14 April
n/a
-2.9 days per decade
First autumn frost
7 November
n/a
7 November
n/a
0.0 days per decade
Growing days
212 days
n/a
214 days
n/a
+2.9 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
46 years, 1914 to 1978
A day with at least 57.0 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 146.0 mm (5.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Sierra Ancha: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
57.0 mm (2.2 in)
5 years
76.9 mm (3.0 in)
10 years
91.6 mm (3.6 in)
25 years
111.9 mm (4.4 in)
50 years
128.4 mm (5.1 in)
Longer than the 46 years of record
100 years
146.0 mm (5.7 in)
Longer than the 46 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, 46 years of values from 1914 to 1978.
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: 121.7 mm (4.8 in) in 1972; 121.2 mm (4.8 in) in 1970; 116.3 mm (4.6 in) in 1951.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Sierra Ancha standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sierra Ancha 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.