Record envelope, standing records and threshold days for Wahweap (USC00029114), Arizona, United States, with 52 years of record.
Key Facts for Wahweap
Wahweap (USC00029114) is a weather station in Arizona, United States at 37.00 latitude and -111.49 longitude, 1,137 m (3,730 ft) above sea level.
The station reports from 1961 to 2012, 52 years of record.
1,464 records set at Wahweap still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Wahweap set a daily record high minimum temperature of 8.3 C (46.9 F) on 3 December 2012.
About the Station
Location: Arizona, United States, 37.00 latitude, -111.49 longitude.
Elevation: 1,137 m (3,730 ft).
Period of record: 1961 to 2012, 52 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 Wahweap. 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 Wahweap, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.6 C (69.1 F)
-18.9 C (-2.0 F)
n/a
n/a
Feb
25.6 C (78.1 F)
-15.6 C (3.9 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-6.1 C (21.0 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-8.9 C (16.0 F)
n/a
n/a
May
41.1 C (106.0 F)
-1.7 C (28.9 F)
n/a
n/a
Jun
46.1 C (115.0 F)
4.4 C (39.9 F)
n/a
n/a
Jul
48.9 C (120.0 F)
8.9 C (48.0 F)
n/a
n/a
Aug
46.1 C (115.0 F)
10.6 C (51.1 F)
n/a
n/a
Sep
40.6 C (105.1 F)
2.2 C (36.0 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-4.4 C (24.1 F)
n/a
n/a
Nov
26.7 C (80.1 F)
-9.4 C (15.1 F)
n/a
n/a
Dec
22.8 C (73.0 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 Wahweap still stand. 1989 holds the most, with 59.
Standing records at Wahweap by the year they were set
Year set
Standing records
1961
27
1962
58
1963
25
1964
36
1965
30
1966
33
1967
40
1968
41
1969
30
1970
30
1971
45
1972
30
1973
30
1974
31
1975
43
1976
23
1977
37
1978
32
1979
38
1980
22
1981
18
1982
16
1983
30
1984
20
1985
23
1986
27
1987
15
1988
55
1989
59
1990
38
1991
19
1992
16
1993
9
1994
25
1995
39
1996
25
1997
17
1998
10
1999
31
2000
42
2001
23
2002
34
2003
29
2004
19
2005
13
2006
28
2007
23
2008
18
2009
13
2010
22
2011
16
2012
11
All-Time Record Progression
1 new records
1 all-time records were set at Wahweap between 16 July 1997 and 16 July 1997. Each dot is a new record.
When Wahweap set new all-time records
Date
Kind
Detail
1997-07-16
Record high maximum temperature
Record high maximum temperature 48.9 C (120.0 F)
Wettest Day of Each Month
Jun: 49.3 mm (1.9 in)
The wettest day on record for each calendar month at Wahweap. The most was 49.3 mm (1.9 in) on 22 June 1972.
Record daily precipitation for each month at Wahweap
Month
Record daily precipitation (mm)
Date
Jan
48.3 mm (1.9 in)
19 January 2010
Feb
22.9 mm (0.9 in)
8 February 1982
Mar
25.9 mm (1.0 in)
9 March 2010
Apr
20.8 mm (0.8 in)
21 April 1995
May
31.8 mm (1.3 in)
13 May 1965
Jun
49.3 mm (1.9 in)
22 June 1972
Jul
35.6 mm (1.4 in)
26 July 1983
Aug
37.1 mm (1.5 in)
26 August 1983
Sep
27.2 mm (1.1 in)
8 September 1961
Oct
45.7 mm (1.8 in)
23 October 1998
Nov
33.3 mm (1.3 in)
21 November 1983
Dec
35.6 mm (1.4 in)
2 December 2011
Period of Record Coverage
1961 to 2012
Complete yearUnder 90 percent of days
52 years of record at Wahweap, 1961 to 2012. 22 years have data for under 90 percent of days and are left out of rankings: 1961, 1978, 1979, 1980, 1982, 1983, 1984, 1986 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 35 complete years at Wahweap, 1962 to 2008. Blue stripes are years cooler than the station's own mean of 15.8 C (60.5 F); red stripes are warmer. The coolest year was 1975, at 14.6 C (58.2 F), and the warmest was 2003, at 17.0 C (62.6 F). The strongest colour marks a difference of 1.3 C (2.3 F).
Annual mean temperature at Wahweap as warming stripes, 1962 to 2008
Year
Annual mean temperature
Difference from the station mean
1962
16.0 C
+0.18 C
1963
16.0 C
+0.15 C
1964
15.3 C
-0.52 C
1965
15.3 C
-0.57 C
1966
16.2 C
+0.39 C
1967
15.5 C
-0.36 C
1968
14.8 C
-1.01 C
1969
16.1 C
+0.30 C
1970
15.9 C
+0.05 C
1971
15.1 C
-0.70 C
1972
16.2 C
+0.39 C
1973
15.3 C
-0.52 C
1974
15.9 C
+0.09 C
1975
14.6 C
-1.26 C
1976
15.7 C
-0.11 C
1977
16.4 C
+0.55 C
1981
16.3 C
+0.50 C
1984
15.2 C
-0.67 C
1985
15.8 C
-0.02 C
1987
15.6 C
-0.29 C
1988
15.7 C
-0.15 C
1991
15.3 C
-0.53 C
1994
16.2 C
+0.36 C
1995
16.2 C
+0.36 C
1996
16.6 C
+0.79 C
1998
15.1 C
-0.73 C
1999
15.6 C
-0.26 C
2000
16.4 C
+0.51 C
2002
16.5 C
+0.63 C
2003
17.0 C
+1.18 C
2004
16.1 C
+0.22 C
2005
16.0 C
+0.20 C
2006
16.2 C
+0.33 C
2007
16.4 C
+0.58 C
2008
15.9 C
+0.02 C
The annual mean temperature here has risen by 0.14 C (0.02 to 0.25) per decade over 1962 to 2008. In Fahrenheit: 0.25 F (0.04 to 0.46) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Wahweap
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.14 C (0.02 to 0.25) per decade
0.25 F (0.04 to 0.46) per decade
1962 to 2008
35
Rise
Mean daily maximum
0.18 C (0.02 to 0.35) per decade
0.33 F (0.03 to 0.62) per decade
1962 to 2008
35
Rise
Mean daily minimum
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.1 to 0.5) per decade
1962 to 2008
35
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
1961 to 2012
Yearly extremes at Wahweap: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
48.9 C (120.0 F)
1997
41.4 C (106.5 F)
52
Coldest night (TNn)
-18.9 C (-2.0 F)
1989
-9.4 C (15.1 F)
52
Wettest day (Rx1day)
49.3 mm (1.9 in)
1972
19.5 mm (0.8 in)
52
Wettest five days (Rx5day)
99.9 mm (3.9 in)
1983
27.6 mm (1.1 in)
52
Longest dry spell (CDD)
155 days
1972
63 days
52
Hottest day (TXx)
The hottest day of the year at Wahweap, 1961 to 2012. The record is 48.9 C (120.0 F) in 1997, marked on the chart; the median year is 41.4 C (106.5 F).
Hottest day (TXx) at Wahweap by year
Year
Hottest day (TXx)
1961
46.1 C (115.0 F)
1962
41.1 C (106.0 F)
1963
41.1 C (106.0 F)
1964
41.7 C (107.1 F)
1965
43.3 C (109.9 F)
1966
41.1 C (106.0 F)
1967
41.1 C (106.0 F)
1968
41.1 C (106.0 F)
1969
41.7 C (107.1 F)
1970
42.2 C (108.0 F)
1971
42.2 C (108.0 F)
1972
42.2 C (108.0 F)
1973
41.7 C (107.1 F)
1974
41.7 C (107.1 F)
1975
39.4 C (102.9 F)
1976
41.1 C (106.0 F)
1977
41.7 C (107.1 F)
1978
40.6 C (105.1 F)
1979
41.1 C (106.0 F)
1980
40.6 C (105.1 F)
1981
41.1 C (106.0 F)
1982
39.4 C (102.9 F)
1983
38.9 C (102.0 F)
1984
38.9 C (102.0 F)
1985
41.1 C (106.0 F)
1986
40.0 C (104.0 F)
1987
38.9 C (102.0 F)
1988
41.1 C (106.0 F)
1989
42.8 C (109.0 F)
1990
43.3 C (109.9 F)
1991
39.4 C (102.9 F)
1992
40.6 C (105.1 F)
1993
41.1 C (106.0 F)
1994
43.3 C (109.9 F)
1995
46.1 C (115.0 F)
1996
41.7 C (107.1 F)
1997
48.9 C (120.0 F)
1998
41.7 C (107.1 F)
1999
43.3 C (109.9 F)
2000
41.7 C (107.1 F)
2001
41.1 C (106.0 F)
2002
42.2 C (108.0 F)
2003
43.3 C (109.9 F)
2004
40.6 C (105.1 F)
2005
42.2 C (108.0 F)
2006
42.2 C (108.0 F)
2007
42.2 C (108.0 F)
2008
40.6 C (105.1 F)
2009
41.7 C (107.1 F)
2010
42.2 C (108.0 F)
2011
40.0 C (104.0 F)
2012
40.0 C (104.0 F)
Coldest night (TNn)
The coldest night of the year at Wahweap, 1961 to 2012. The record is -18.9 C (-2.0 F) in 1989, marked on the chart; the median year is -9.4 C (15.1 F).
Coldest night (TNn) at Wahweap by year
Year
Coldest night (TNn)
1961
-16.1 C (3.0 F)
1962
-11.1 C (12.0 F)
1963
-17.2 C (1.0 F)
1964
-13.3 C (8.1 F)
1965
-6.7 C (19.9 F)
1966
-11.7 C (10.9 F)
1967
-15.6 C (3.9 F)
1968
-13.3 C (8.1 F)
1969
-7.8 C (18.0 F)
1970
-10.0 C (14.0 F)
1971
-16.1 C (3.0 F)
1972
-9.4 C (15.1 F)
1973
-8.9 C (16.0 F)
1974
-13.9 C (7.0 F)
1975
-8.9 C (16.0 F)
1976
-9.4 C (15.1 F)
1977
-10.0 C (14.0 F)
1978
-15.0 C (5.0 F)
1979
-12.8 C (9.0 F)
1980
-3.9 C (25.0 F)
1981
-6.1 C (21.0 F)
1982
-12.2 C (10.0 F)
1983
-7.8 C (18.0 F)
1984
-8.3 C (17.1 F)
1985
-11.1 C (12.0 F)
1986
-8.3 C (17.1 F)
1987
-11.1 C (12.0 F)
1988
-10.6 C (12.9 F)
1989
-18.9 C (-2.0 F)
1990
-15.6 C (3.9 F)
1991
-11.1 C (12.0 F)
1992
-9.4 C (15.1 F)
1993
-7.8 C (18.0 F)
1994
-7.2 C (19.0 F)
1995
-6.7 C (19.9 F)
1996
-8.9 C (16.0 F)
1997
-7.8 C (18.0 F)
1998
-9.4 C (15.1 F)
1999
-8.3 C (17.1 F)
2000
-8.3 C (17.1 F)
2001
-8.3 C (17.1 F)
2002
-7.8 C (18.0 F)
2003
-5.6 C (21.9 F)
2004
-8.3 C (17.1 F)
2005
-8.9 C (16.0 F)
2006
-7.2 C (19.0 F)
2007
-11.1 C (12.0 F)
2008
-9.4 C (15.1 F)
2009
-7.8 C (18.0 F)
2010
-7.2 C (19.0 F)
2011
-12.8 C (9.0 F)
2012
-5.6 C (21.9 F)
Wettest day (Rx1day)
The wettest day of the year at Wahweap, 1961 to 2012. The record is 49.3 mm (1.9 in) in 1972, marked on the chart; the median year is 19.5 mm (0.8 in).
Wettest day (Rx1day) at Wahweap by year
Year
Wettest day (Rx1day)
1961
27.2 mm (1.1 in)
1962
8.1 mm (0.32 in)
1963
21.6 mm (0.9 in)
1964
9.7 mm (0.38 in)
1965
31.8 mm (1.3 in)
1966
13.5 mm (0.5 in)
1967
17.8 mm (0.7 in)
1968
21.6 mm (0.9 in)
1969
16.0 mm (0.6 in)
1970
16.8 mm (0.7 in)
1971
14.0 mm (0.6 in)
1972
49.3 mm (1.9 in)
1973
20.3 mm (0.8 in)
1974
6.6 mm (0.26 in)
1975
17.0 mm (0.7 in)
1976
17.5 mm (0.7 in)
1977
10.2 mm (0.4 in)
1978
23.4 mm (0.9 in)
1979
28.4 mm (1.1 in)
1980
17.8 mm (0.7 in)
1981
18.3 mm (0.7 in)
1982
22.9 mm (0.9 in)
1983
37.1 mm (1.5 in)
1984
14.5 mm (0.6 in)
1985
32.8 mm (1.3 in)
1986
16.3 mm (0.6 in)
1987
17.5 mm (0.7 in)
1988
19.3 mm (0.8 in)
1989
10.9 mm (0.4 in)
1990
21.6 mm (0.9 in)
1991
17.8 mm (0.7 in)
1992
24.1 mm (0.9 in)
1993
17.8 mm (0.7 in)
1994
14.0 mm (0.6 in)
1995
20.8 mm (0.8 in)
1996
16.5 mm (0.6 in)
1997
19.6 mm (0.8 in)
1998
45.7 mm (1.8 in)
1999
17.8 mm (0.7 in)
2000
31.8 mm (1.3 in)
2001
20.3 mm (0.8 in)
2002
20.8 mm (0.8 in)
2003
20.3 mm (0.8 in)
2004
23.1 mm (0.9 in)
2005
22.4 mm (0.9 in)
2006
27.9 mm (1.1 in)
2007
25.7 mm (1.0 in)
2008
15.7 mm (0.6 in)
2009
17.3 mm (0.7 in)
2010
48.3 mm (1.9 in)
2011
35.6 mm (1.4 in)
2012
14.0 mm (0.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Wahweap, 1961 to 2012. The record is 99.9 mm (3.9 in) in 1983, marked on the chart; the median year is 27.6 mm (1.1 in).
Wettest five days (Rx5day) at Wahweap by year
Year
Wettest five days (Rx5day)
1961
29.2 mm (1.1 in)
1962
21.0 mm (0.8 in)
1963
30.5 mm (1.2 in)
1964
14.5 mm (0.6 in)
1965
31.8 mm (1.3 in)
1966
18.0 mm (0.7 in)
1967
30.7 mm (1.2 in)
1968
30.2 mm (1.2 in)
1969
16.0 mm (0.6 in)
1970
24.9 mm (1.0 in)
1971
15.3 mm (0.6 in)
1972
53.9 mm (2.1 in)
1973
24.9 mm (1.0 in)
1974
13.6 mm (0.5 in)
1975
17.0 mm (0.7 in)
1976
19.0 mm (0.7 in)
1977
14.3 mm (0.6 in)
1978
36.7 mm (1.4 in)
1979
28.4 mm (1.1 in)
1980
33.0 mm (1.3 in)
1981
46.6 mm (1.8 in)
1982
32.8 mm (1.3 in)
1983
99.9 mm (3.9 in)
1984
15.5 mm (0.6 in)
1985
33.1 mm (1.3 in)
1986
18.9 mm (0.7 in)
1987
25.6 mm (1.0 in)
1988
29.2 mm (1.1 in)
1989
39.4 mm (1.6 in)
1990
21.6 mm (0.9 in)
1991
24.2 mm (1.0 in)
1992
27.7 mm (1.1 in)
1993
38.1 mm (1.5 in)
1994
14.5 mm (0.6 in)
1995
23.1 mm (0.9 in)
1996
21.2 mm (0.8 in)
1997
33.3 mm (1.3 in)
1998
58.9 mm (2.3 in)
1999
17.8 mm (0.7 in)
2000
56.3 mm (2.2 in)
2001
31.8 mm (1.3 in)
2002
26.4 mm (1.0 in)
2003
20.5 mm (0.8 in)
2004
30.7 mm (1.2 in)
2005
27.5 mm (1.1 in)
2006
56.7 mm (2.2 in)
2007
25.7 mm (1.0 in)
2008
23.9 mm (0.9 in)
2009
33.0 mm (1.3 in)
2010
98.1 mm (3.9 in)
2011
38.1 mm (1.5 in)
2012
21.6 mm (0.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Wahweap, 1961 to 2012. The record is 155 days in 1972, marked on the chart; the median year is 63 days.
Longest dry spell (CDD) at Wahweap by year
Year
Longest dry spell (CDD)
1961
63 days
1962
52 days
1963
47 days
1964
101 days
1965
32 days
1966
75 days
1967
87 days
1968
94 days
1969
55 days
1970
47 days
1971
69 days
1972
155 days
1973
68 days
1974
103 days
1975
39 days
1976
57 days
1977
49 days
1978
71 days
1979
71 days
1980
31 days
1981
68 days
1982
63 days
1983
44 days
1984
53 days
1985
49 days
1986
49 days
1987
47 days
1988
42 days
1989
62 days
1990
35 days
1991
64 days
1992
35 days
1993
91 days
1994
34 days
1995
53 days
1996
89 days
1997
51 days
1998
75 days
1999
75 days
2000
39 days
2001
40 days
2002
110 days
2003
89 days
2004
83 days
2005
92 days
2006
83 days
2007
66 days
2008
63 days
2009
128 days
2010
90 days
2011
23 days
2012
74 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
35 years with a frost
Across 35 years with a frost, the median last spring frost at Wahweap falls on 29 March and the median first autumn frost on 17 November, which leaves a median of 226 days between them.
Fitted over all years, the growing season changes by +5.5 days per decade at this station.
Frost dates and growing season at Wahweap
Measure
Median, all years
Earliest period
Recent period (1967 to 2008)
Recent against earliest
Fitted trend
Last spring frost
29 March
n/a
26 March
n/a
-5.5 days per decade
First autumn frost
17 November
n/a
16 November
n/a
0.0 days per decade
Growing days
226 days
n/a
227 days
n/a
+5.5 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
47 years, 1962 to 2009
A day with at least 19.0 mm (0.7 in) of rain is expected about once in 2 years. A day with at least 49.8 mm (2.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Wahweap: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
19.0 mm (0.7 in)
5 years
26.2 mm (1.0 in)
10 years
31.4 mm (1.2 in)
25 years
38.4 mm (1.5 in)
50 years
43.9 mm (1.7 in)
Longer than the 47 years of record
100 years
49.8 mm (2.0 in)
Longer than the 47 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, 47 years of values from 1962 to 2009.
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: 49.3 mm (1.9 in) in 1972; 45.7 mm (1.8 in) in 1998; 37.1 mm (1.5 in) in 1983.
Download the Data
Data for Wahweap standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Wahweap 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.