Record envelope, standing records and threshold days for Colorado City (USC00021920), Arizona, United States, with 50 years of record.
Key Facts for Colorado City
Colorado City (USC00021920) is a weather station in Arizona, United States at 36.99 latitude and -112.97 longitude, 1,524 m (5,001 ft) above sea level.
The station reports from 1963 to 2012, 50 years of record.
1,464 records set at Colorado City still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Colorado City set a daily record snowfall of 11.4 cm (4.5 in) on 24 January 2012.
About the Station
Location: Arizona, United States, 36.99 latitude, -112.97 longitude.
Elevation: 1,524 m (5,001 ft).
Period of record: 1963 to 2012, 50 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 Colorado City. 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 Colorado City, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
21.1 C (70.0 F)
-22.8 C (-9.0 F)
n/a
n/a
Feb
25.6 C (78.1 F)
-20.0 C (-4.0 F)
n/a
n/a
Mar
31.1 C (88.0 F)
-14.4 C (6.1 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-10.6 C (12.9 F)
n/a
n/a
May
36.7 C (98.1 F)
-5.6 C (21.9 F)
n/a
n/a
Jun
40.6 C (105.1 F)
-2.2 C (28.0 F)
n/a
n/a
Jul
43.3 C (109.9 F)
6.1 C (43.0 F)
n/a
n/a
Aug
40.6 C (105.1 F)
6.7 C (44.1 F)
n/a
n/a
Sep
36.7 C (98.1 F)
-1.7 C (28.9 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-14.4 C (6.1 F)
n/a
n/a
Nov
26.7 C (80.1 F)
-17.2 C (1.0 F)
n/a
n/a
Dec
20.6 C (69.1 F)
-22.8 C (-9.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Colorado City still stand. 1971 holds the most, with 48.
Standing records at Colorado City by the year they were set
Year set
Standing records
1963
2
1964
5
1965
21
1966
42
1967
30
1968
24
1969
36
1970
37
1971
48
1972
24
1973
34
1974
22
1975
39
1976
25
1977
27
1978
19
1979
37
1980
29
1981
27
1982
21
1983
17
1984
24
1985
46
1986
43
1987
30
1988
36
1989
38
1990
33
1991
24
1992
20
1993
28
1994
47
1995
40
1996
41
1997
18
1998
26
1999
40
2000
29
2001
20
2002
16
2003
36
2004
33
2005
24
2006
34
2007
42
2008
29
2009
38
2010
29
2011
34
All-Time Record Progression
2 new records
2 all-time records were set at Colorado City between 7 July 1996 and 15 July 2005. Each dot is a new record.
When Colorado City set new all-time records
Date
Kind
Detail
1996-07-07
Record high minimum temperature
Record high minimum temperature 28.3 C (82.9 F)
2005-07-15
Record high maximum temperature
Record high maximum temperature 43.3 C (109.9 F)
Wettest Day of Each Month
Aug: 81.3 mm (3.2 in)
The wettest day on record for each calendar month at Colorado City. The most was 81.3 mm (3.2 in) on 2 August 1982.
Record daily precipitation for each month at Colorado City
Month
Record daily precipitation (mm)
Date
Jan
33.0 mm (1.3 in)
13 January 1997
Feb
43.4 mm (1.7 in)
26 February 1969
Mar
35.6 mm (1.4 in)
17 March 2003
Apr
37.3 mm (1.5 in)
21 April 1988
May
31.8 mm (1.3 in)
5 May 1998
Jun
29.5 mm (1.2 in)
6 June 1972
Jul
49.5 mm (1.9 in)
12 July 1981
Aug
81.3 mm (3.2 in)
2 August 1982
Sep
59.7 mm (2.4 in)
9 September 1998
Oct
65.5 mm (2.6 in)
21 October 2004
Nov
78.0 mm (3.1 in)
1 November 1995
Dec
44.5 mm (1.8 in)
1 December 2007
Period of Record Coverage
1963 to 2012
Complete yearUnder 90 percent of days
50 years of record at Colorado City, 1963 to 2012. 5 years have data for under 90 percent of days and are left out of rankings: 1963, 1964, 1965, 2008, 2012.
Cooler than the station meanWarmer than the station mean
One stripe for each of 43 complete years at Colorado City, 1966 to 2011. Blue stripes are years cooler than the station's own mean of 12.9 C (55.2 F); red stripes are warmer. The coolest year was 1975, at 11.7 C (53.1 F), and the warmest was 1996, at 14.2 C (57.5 F). The strongest colour marks a difference of 1.3 C (2.3 F).
Annual mean temperature at Colorado City as warming stripes, 1966 to 2011
Year
Annual mean temperature
Difference from the station mean
1966
13.2 C
+0.33 C
1967
12.4 C
-0.54 C
1968
12.3 C
-0.58 C
1969
12.5 C
-0.37 C
1970
12.5 C
-0.39 C
1971
11.9 C
-0.96 C
1972
12.5 C
-0.42 C
1973
11.8 C
-1.07 C
1974
12.7 C
-0.15 C
1975
11.7 C
-1.15 C
1976
12.5 C
-0.36 C
1977
13.3 C
+0.37 C
1978
12.9 C
+0.01 C
1979
12.5 C
-0.36 C
1980
13.2 C
+0.31 C
1981
13.9 C
+1.04 C
1982
12.2 C
-0.65 C
1983
12.8 C
-0.06 C
1984
12.4 C
-0.53 C
1985
12.7 C
-0.22 C
1986
13.5 C
+0.56 C
1987
12.8 C
-0.07 C
1988
13.2 C
+0.28 C
1989
13.2 C
+0.33 C
1990
13.1 C
+0.17 C
1991
12.7 C
-0.21 C
1992
12.7 C
-0.16 C
1993
12.9 C
-0.03 C
1994
14.1 C
+1.17 C
1995
14.0 C
+1.11 C
1996
14.2 C
+1.27 C
1997
13.5 C
+0.65 C
1998
12.6 C
-0.25 C
1999
12.4 C
-0.49 C
2001
13.5 C
+0.57 C
2002
13.3 C
+0.40 C
2003
14.1 C
+1.16 C
2004
13.2 C
+0.34 C
2005
13.2 C
+0.30 C
2006
13.5 C
+0.62 C
2009
12.4 C
-0.52 C
2010
12.3 C
-0.57 C
2011
12.0 C
-0.86 C
The annual mean temperature here has risen by 0.16 C (0.02 to 0.30) per decade over 1966 to 2011. In Fahrenheit: 0.29 F (0.04 to 0.55) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Colorado City
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.16 C (0.02 to 0.30) per decade
0.29 F (0.04 to 0.55) per decade
1966 to 2011
43
Rise
Mean daily maximum
0.20 C (0.03 to 0.38) per decade
0.37 F (0.05 to 0.69) per decade
1966 to 2011
43
Rise
Mean daily minimum
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.1 to 0.5) per decade
1966 to 2011
43
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
1963 to 2012
Yearly extremes at Colorado City: 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)
2005
38.6 C (101.5 F)
50
Coldest night (TNn)
-22.8 C (-9.0 F)
1973
-15.0 C (5.0 F)
50
Wettest day (Rx1day)
81.3 mm (3.2 in)
1982
27.6 mm (1.1 in)
50
Wettest five days (Rx5day)
127.0 mm (5.0 in)
1998
47.1 mm (1.9 in)
50
Longest dry spell (CDD)
103 days
1972
46 days
50
Hottest day (TXx)
The hottest day of the year at Colorado City, 1963 to 2012. The record is 43.3 C (109.9 F) in 2005, marked on the chart; the median year is 38.6 C (101.5 F).
Hottest day (TXx) at Colorado City by year
Year
Hottest day (TXx)
1963
37.2 C (99.0 F)
1964
30.6 C (87.1 F)
1965
35.6 C (96.1 F)
1966
38.3 C (100.9 F)
1967
37.8 C (100.0 F)
1968
36.7 C (98.1 F)
1969
37.8 C (100.0 F)
1970
40.0 C (104.0 F)
1971
37.8 C (100.0 F)
1972
38.9 C (102.0 F)
1973
38.9 C (102.0 F)
1974
37.8 C (100.0 F)
1975
36.7 C (98.1 F)
1976
38.3 C (100.9 F)
1977
38.3 C (100.9 F)
1978
37.8 C (100.0 F)
1979
37.8 C (100.0 F)
1980
37.8 C (100.0 F)
1981
39.4 C (102.9 F)
1982
38.3 C (100.9 F)
1983
39.4 C (102.9 F)
1984
40.6 C (105.1 F)
1985
42.2 C (108.0 F)
1986
37.8 C (100.0 F)
1987
37.2 C (99.0 F)
1988
38.3 C (100.9 F)
1989
40.6 C (105.1 F)
1990
38.9 C (102.0 F)
1991
38.9 C (102.0 F)
1992
36.7 C (98.1 F)
1993
40.6 C (105.1 F)
1994
40.0 C (104.0 F)
1995
38.9 C (102.0 F)
1996
38.3 C (100.9 F)
1997
37.8 C (100.0 F)
1998
38.9 C (102.0 F)
1999
38.9 C (102.0 F)
2000
39.4 C (102.9 F)
2001
38.9 C (102.0 F)
2002
38.9 C (102.0 F)
2003
40.0 C (104.0 F)
2004
40.0 C (104.0 F)
2005
43.3 C (109.9 F)
2006
41.7 C (107.1 F)
2007
42.8 C (109.0 F)
2008
38.3 C (100.9 F)
2009
40.6 C (105.1 F)
2010
38.3 C (100.9 F)
2011
38.9 C (102.0 F)
2012
17.8 C (64.0 F)
Coldest night (TNn)
The coldest night of the year at Colorado City, 1963 to 2012. The record is -22.8 C (-9.0 F) in 1973, marked on the chart; the median year is -15.0 C (5.0 F).
Coldest night (TNn) at Colorado City by year
Year
Coldest night (TNn)
1963
8.3 C (46.9 F)
1964
-3.9 C (25.0 F)
1965
-13.9 C (7.0 F)
1966
-18.9 C (-2.0 F)
1967
-19.4 C (-2.9 F)
1968
-17.2 C (1.0 F)
1969
-13.3 C (8.1 F)
1970
-16.7 C (1.9 F)
1971
-19.4 C (-2.9 F)
1972
-20.0 C (-4.0 F)
1973
-22.8 C (-9.0 F)
1974
-18.9 C (-2.0 F)
1975
-15.0 C (5.0 F)
1976
-17.2 C (1.0 F)
1977
-12.2 C (10.0 F)
1978
-17.8 C (0.0 F)
1979
-20.0 C (-4.0 F)
1980
-10.0 C (14.0 F)
1981
-11.1 C (12.0 F)
1982
-16.1 C (3.0 F)
1983
-9.4 C (15.1 F)
1984
-14.4 C (6.1 F)
1985
-18.9 C (-2.0 F)
1986
-13.9 C (7.0 F)
1987
-14.4 C (6.1 F)
1988
-20.6 C (-5.1 F)
1989
-19.4 C (-2.9 F)
1990
-22.8 C (-9.0 F)
1991
-14.4 C (6.1 F)
1992
-16.7 C (1.9 F)
1993
-11.7 C (10.9 F)
1994
-13.9 C (7.0 F)
1995
-11.1 C (12.0 F)
1996
-15.0 C (5.0 F)
1997
-15.0 C (5.0 F)
1998
-12.8 C (9.0 F)
1999
-13.9 C (7.0 F)
2000
-15.0 C (5.0 F)
2001
-16.7 C (1.9 F)
2002
-11.7 C (10.9 F)
2003
-14.4 C (6.1 F)
2004
-12.2 C (10.0 F)
2005
-12.8 C (9.0 F)
2006
-15.0 C (5.0 F)
2007
-20.0 C (-4.0 F)
2008
-15.0 C (5.0 F)
2009
-17.2 C (1.0 F)
2010
-14.4 C (6.1 F)
2011
-16.1 C (3.0 F)
2012
-8.9 C (16.0 F)
Wettest day (Rx1day)
The wettest day of the year at Colorado City, 1963 to 2012. The record is 81.3 mm (3.2 in) in 1982, marked on the chart; the median year is 27.6 mm (1.1 in).
Wettest day (Rx1day) at Colorado City by year
Year
Wettest day (Rx1day)
1963
20.6 mm (0.8 in)
1964
7.4 mm (0.29 in)
1965
23.1 mm (0.9 in)
1966
42.2 mm (1.7 in)
1967
29.2 mm (1.1 in)
1968
27.7 mm (1.1 in)
1969
55.9 mm (2.2 in)
1970
29.7 mm (1.2 in)
1971
25.9 mm (1.0 in)
1972
35.6 mm (1.4 in)
1973
17.3 mm (0.7 in)
1974
16.0 mm (0.6 in)
1975
21.1 mm (0.8 in)
1976
34.5 mm (1.4 in)
1977
26.4 mm (1.0 in)
1978
22.4 mm (0.9 in)
1979
24.1 mm (0.9 in)
1980
27.2 mm (1.1 in)
1981
49.5 mm (1.9 in)
1982
81.3 mm (3.2 in)
1983
36.3 mm (1.4 in)
1984
25.1 mm (1.0 in)
1985
35.3 mm (1.4 in)
1986
24.9 mm (1.0 in)
1987
28.4 mm (1.1 in)
1988
37.3 mm (1.5 in)
1989
25.7 mm (1.0 in)
1990
18.5 mm (0.7 in)
1991
27.4 mm (1.1 in)
1992
31.8 mm (1.3 in)
1993
22.9 mm (0.9 in)
1994
20.6 mm (0.8 in)
1995
78.0 mm (3.1 in)
1996
25.7 mm (1.0 in)
1997
33.0 mm (1.3 in)
1998
59.7 mm (2.4 in)
1999
27.9 mm (1.1 in)
2000
26.7 mm (1.1 in)
2001
29.2 mm (1.1 in)
2002
21.6 mm (0.9 in)
2003
35.6 mm (1.4 in)
2004
65.5 mm (2.6 in)
2005
26.9 mm (1.1 in)
2006
15.7 mm (0.6 in)
2007
44.5 mm (1.8 in)
2008
30.7 mm (1.2 in)
2009
25.4 mm (1.0 in)
2010
43.2 mm (1.7 in)
2011
36.6 mm (1.4 in)
2012
12.7 mm (0.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Colorado City, 1963 to 2012. The record is 127.0 mm (5.0 in) in 1998, marked on the chart; the median year is 47.1 mm (1.9 in).
Wettest five days (Rx5day) at Colorado City by year
Year
Wettest five days (Rx5day)
1963
29.5 mm (1.2 in)
1964
7.4 mm (0.29 in)
1965
51.6 mm (2.0 in)
1966
87.8 mm (3.5 in)
1967
45.4 mm (1.8 in)
1968
31.3 mm (1.2 in)
1969
61.0 mm (2.4 in)
1970
41.4 mm (1.6 in)
1971
53.0 mm (2.1 in)
1972
42.5 mm (1.7 in)
1973
31.1 mm (1.2 in)
1974
40.1 mm (1.6 in)
1975
30.5 mm (1.2 in)
1976
46.9 mm (1.8 in)
1977
33.3 mm (1.3 in)
1978
78.6 mm (3.1 in)
1979
56.4 mm (2.2 in)
1980
58.1 mm (2.3 in)
1981
89.4 mm (3.5 in)
1982
86.4 mm (3.4 in)
1983
67.1 mm (2.6 in)
1984
62.7 mm (2.5 in)
1985
50.0 mm (2.0 in)
1986
52.3 mm (2.1 in)
1987
40.8 mm (1.6 in)
1988
62.2 mm (2.4 in)
1989
46.0 mm (1.8 in)
1990
26.1 mm (1.0 in)
1991
49.8 mm (2.0 in)
1992
51.1 mm (2.0 in)
1993
47.2 mm (1.9 in)
1994
35.6 mm (1.4 in)
1995
78.0 mm (3.1 in)
1996
34.3 mm (1.4 in)
1997
44.5 mm (1.8 in)
1998
127.0 mm (5.0 in)
1999
61.0 mm (2.4 in)
2000
74.0 mm (2.9 in)
2001
44.4 mm (1.7 in)
2002
50.8 mm (2.0 in)
2003
47.0 mm (1.9 in)
2004
104.7 mm (4.1 in)
2005
57.8 mm (2.3 in)
2006
28.9 mm (1.1 in)
2007
44.5 mm (1.8 in)
2008
30.7 mm (1.2 in)
2009
25.4 mm (1.0 in)
2010
71.7 mm (2.8 in)
2011
37.1 mm (1.5 in)
2012
20.3 mm (0.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Colorado City, 1963 to 2012. The record is 103 days in 1972, marked on the chart; the median year is 46 days.
Longest dry spell (CDD) at Colorado City by year
Year
Longest dry spell (CDD)
1963
12 days
1964
21 days
1965
28 days
1966
49 days
1967
57 days
1968
46 days
1969
39 days
1970
47 days
1971
47 days
1972
103 days
1973
88 days
1974
103 days
1975
39 days
1976
57 days
1977
41 days
1978
73 days
1979
61 days
1980
46 days
1981
41 days
1982
67 days
1983
31 days
1984
40 days
1985
23 days
1986
53 days
1987
37 days
1988
39 days
1989
67 days
1990
32 days
1991
101 days
1992
35 days
1993
61 days
1994
49 days
1995
42 days
1996
48 days
1997
45 days
1998
33 days
1999
58 days
2000
28 days
2001
45 days
2002
81 days
2003
57 days
2004
68 days
2005
42 days
2006
21 days
2007
61 days
2008
65 days
2009
47 days
2010
44 days
2011
46 days
2012
21 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
43 years with a frost
Across 43 years with a frost, the median last spring frost at Colorado City falls on 2 May and the median first autumn frost on 17 October, which leaves a median of 170 days between them.
Fitted over all years, the growing season changes by +5.1 days per decade at this station.
Frost dates and growing season at Colorado City
Measure
Median, all years
Earliest period
Recent period (1979 to 2011)
Recent against earliest
Fitted trend
Last spring frost
2 May
n/a
30 April
n/a
-2.4 days per decade
First autumn frost
17 October
n/a
20 October
n/a
+2.7 days per decade
Growing days
170 days
n/a
176 days
n/a
+5.1 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
45 years, 1966 to 2010
A day with at least 28.8 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 97.1 mm (3.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Colorado City: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
28.8 mm (1.1 in)
5 years
40.2 mm (1.6 in)
10 years
49.9 mm (2.0 in)
25 years
65.4 mm (2.6 in)
50 years
79.8 mm (3.1 in)
Longer than the 45 years of record
100 years
97.1 mm (3.8 in)
Longer than the 45 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, 45 years of values from 1966 to 2010.
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: 81.3 mm (3.2 in) in 1982; 78.0 mm (3.1 in) in 1995; 65.5 mm (2.6 in) in 2004.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Colorado City, at 1999. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1999 ran 0.5 C (0.8 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Colorado City, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1999
-0.5
-0.8
likely
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 Colorado City standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Colorado City 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.