Record envelope, standing records and threshold days for Grand Canyon Np 2 (USC00023596), Arizona, United States, with 37 years of record.
Key Facts for Grand Canyon Np 2
Grand Canyon Np 2 (USC00023596) is a weather station in Arizona, United States at 36.05 latitude and -112.15 longitude, 2,068 m (6,785 ft) above sea level.
The station reports from 1976 to 2012, 37 years of record.
1,464 records set at Grand Canyon Np 2 still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Grand Canyon Np 2 tied a daily record high maximum temperature of 20.6 C (69.1 F) on 31 March 2012.
About the Station
Location: Arizona, United States, 36.05 latitude, -112.15 longitude.
Elevation: 2,068 m (6,785 ft).
Period of record: 1976 to 2012, 37 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 Grand Canyon Np 2. 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 Grand Canyon Np 2, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
17.8 C (64.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Feb
20.6 C (69.1 F)
-28.9 C (-20.0 F)
n/a
n/a
Mar
25.0 C (77.0 F)
-18.3 C (-0.9 F)
n/a
n/a
Apr
27.8 C (82.0 F)
-13.3 C (8.1 F)
n/a
n/a
May
33.3 C (91.9 F)
-8.3 C (17.1 F)
n/a
n/a
Jun
36.1 C (97.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jul
38.3 C (100.9 F)
1.7 C (35.1 F)
n/a
n/a
Aug
36.1 C (97.0 F)
1.7 C (35.1 F)
n/a
n/a
Sep
33.9 C (93.0 F)
-4.4 C (24.1 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-13.3 C (8.1 F)
n/a
n/a
Nov
23.3 C (73.9 F)
-21.1 C (-6.0 F)
n/a
n/a
Dec
18.3 C (64.9 F)
-28.9 C (-20.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Grand Canyon Np 2 still stand. 1985 holds the most, with 68.
Standing records at Grand Canyon Np 2 by the year they were set
Year set
Standing records
1976
18
1977
49
1978
43
1979
54
1980
48
1981
37
1982
46
1983
32
1984
37
1985
68
1986
49
1987
42
1988
54
1989
55
1990
39
1991
40
1992
30
1993
27
1994
40
1995
44
1996
56
1997
15
1998
6
1999
36
2000
50
2001
36
2002
59
2003
49
2004
32
2005
38
2006
50
2007
61
2008
36
2009
27
2010
26
2011
26
2012
9
All-Time Record Progression
2 new records
2 all-time records were set at Grand Canyon Np 2 between 22 January 2010 and 23 January 2010. Each dot is a new record.
When Grand Canyon Np 2 set new all-time records
Date
Kind
Detail
2010-01-22
Record daily snowfall
Record daily snowfall 71.1 cm (28.0 in)
2010-01-23
Record snow depth
Record snow depth 83.8 cm (33.0 in)
Wettest Day of Each Month
Aug: 83.3 mm (3.3 in)
The wettest day on record for each calendar month at Grand Canyon Np 2. The most was 83.3 mm (3.3 in) on 13 August 2001.
Record daily precipitation for each month at Grand Canyon Np 2
Month
Record daily precipitation (mm)
Date
Jan
36.8 mm (1.4 in)
22 January 2010
Feb
35.8 mm (1.4 in)
19 February 1990
Mar
36.6 mm (1.4 in)
6 March 1995
Apr
35.6 mm (1.4 in)
2 April 1986
May
37.1 mm (1.5 in)
23 May 2007
Jun
27.9 mm (1.1 in)
18 June 1988
Jul
79.8 mm (3.1 in)
25 July 1983
Aug
83.3 mm (3.3 in)
13 August 2001
Sep
65.0 mm (2.6 in)
19 September 2004
Oct
52.8 mm (2.1 in)
27 October 2004
Nov
49.5 mm (1.9 in)
11 November 1978
Dec
43.4 mm (1.7 in)
12 December 2001
Period of Record Coverage
1976 to 2012
Complete yearUnder 90 percent of days
37 years of record at Grand Canyon Np 2, 1976 to 2012. 13 years have data for under 90 percent of days and are left out of rankings: 1976, 1989, 1997, 1998, 1999, 2000, 2001, 2002 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 25 complete years at Grand Canyon Np 2, 1977 to 2008. Blue stripes are years cooler than the station's own mean of 9.0 C (48.1 F); red stripes are warmer. The coolest year was 1987, at 7.5 C (45.6 F), and the warmest was 2003, at 10.5 C (50.8 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Grand Canyon Np 2 as warming stripes, 1977 to 2008
Year
Annual mean temperature
Difference from the station mean
1977
8.9 C
-0.08 C
1978
8.6 C
-0.37 C
1980
8.9 C
-0.11 C
1981
9.4 C
+0.40 C
1983
8.4 C
-0.52 C
1985
7.7 C
-1.25 C
1986
8.5 C
-0.50 C
1987
7.5 C
-1.43 C
1988
8.0 C
-1.00 C
1990
8.3 C
-0.69 C
1991
8.3 C
-0.62 C
1992
8.2 C
-0.78 C
1993
7.9 C
-1.10 C
1994
8.6 C
-0.32 C
1995
8.9 C
-0.11 C
1999
9.3 C
+0.32 C
2000
10.0 C
+0.99 C
2001
9.8 C
+0.83 C
2002
9.9 C
+0.92 C
2003
10.5 C
+1.49 C
2004
9.3 C
+0.31 C
2005
10.1 C
+1.15 C
2006
9.8 C
+0.83 C
2007
10.4 C
+1.46 C
2008
9.1 C
+0.11 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1976 to 2012
Yearly extremes at Grand Canyon Np 2: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.3 C (100.9 F)
2003
34.4 C (93.9 F)
37
Coldest night (TNn)
-28.9 C (-20.0 F)
1985
-19.4 C (-2.9 F)
37
Wettest day (Rx1day)
83.3 mm (3.3 in)
2001
33.0 mm (1.3 in)
37
Wettest five days (Rx5day)
103.4 mm (4.1 in)
1978
52.9 mm (2.1 in)
37
Longest dry spell (CDD)
89 days
1976
49 days
37
Hottest day (TXx)
The hottest day of the year at Grand Canyon Np 2, 1976 to 2012. The record is 38.3 C (100.9 F) in 2003, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Grand Canyon Np 2 by year
Year
Hottest day (TXx)
1976
33.9 C (93.0 F)
1977
33.3 C (91.9 F)
1978
33.3 C (91.9 F)
1979
34.4 C (93.9 F)
1980
32.2 C (90.0 F)
1981
34.4 C (93.9 F)
1982
31.7 C (89.1 F)
1983
34.4 C (93.9 F)
1984
32.8 C (91.0 F)
1985
36.1 C (97.0 F)
1986
33.3 C (91.9 F)
1987
31.7 C (89.1 F)
1988
32.2 C (90.0 F)
1989
36.1 C (97.0 F)
1990
34.4 C (93.9 F)
1991
33.9 C (93.0 F)
1992
33.3 C (91.9 F)
1993
34.4 C (93.9 F)
1994
35.6 C (96.1 F)
1995
34.4 C (93.9 F)
1996
34.4 C (93.9 F)
1997
35.0 C (95.0 F)
1998
25.6 C (78.1 F)
1999
35.6 C (96.1 F)
2000
35.0 C (95.0 F)
2001
35.0 C (95.0 F)
2002
36.1 C (97.0 F)
2003
38.3 C (100.9 F)
2004
35.0 C (95.0 F)
2005
36.1 C (97.0 F)
2006
35.6 C (96.1 F)
2007
37.8 C (100.0 F)
2008
35.0 C (95.0 F)
2009
36.1 C (97.0 F)
2010
34.4 C (93.9 F)
2011
31.7 C (89.1 F)
2012
20.6 C (69.1 F)
Coldest night (TNn)
The coldest night of the year at Grand Canyon Np 2, 1976 to 2012. The record is -28.9 C (-20.0 F) in 1985, marked on the chart; the median year is -19.4 C (-2.9 F).
Coldest night (TNn) at Grand Canyon Np 2 by year
Year
Coldest night (TNn)
1976
-18.9 C (-2.0 F)
1977
-19.4 C (-2.9 F)
1978
-27.2 C (-17.0 F)
1979
-27.2 C (-17.0 F)
1980
-13.9 C (7.0 F)
1981
-15.6 C (3.9 F)
1982
-24.4 C (-11.9 F)
1983
-15.0 C (5.0 F)
1984
-20.6 C (-5.1 F)
1985
-28.9 C (-20.0 F)
1986
-17.8 C (0.0 F)
1987
-22.2 C (-8.0 F)
1988
-21.7 C (-7.1 F)
1989
-22.8 C (-9.0 F)
1990
-28.9 C (-20.0 F)
1991
-17.8 C (0.0 F)
1992
-17.2 C (1.0 F)
1993
-18.3 C (-0.9 F)
1994
-19.4 C (-2.9 F)
1995
-17.2 C (1.0 F)
1996
-19.4 C (-2.9 F)
1997
-20.0 C (-4.0 F)
1998
-21.1 C (-6.0 F)
1999
-17.2 C (1.0 F)
2000
-17.2 C (1.0 F)
2001
-18.3 C (-0.9 F)
2002
-19.4 C (-2.9 F)
2003
-14.4 C (6.1 F)
2004
-19.4 C (-2.9 F)
2005
-15.6 C (3.9 F)
2006
-20.6 C (-5.1 F)
2007
-21.7 C (-7.1 F)
2008
-21.1 C (-6.0 F)
2009
-18.3 C (-0.9 F)
2010
-21.7 C (-7.1 F)
2011
-24.4 C (-11.9 F)
2012
-14.4 C (6.1 F)
Wettest day (Rx1day)
The wettest day of the year at Grand Canyon Np 2, 1976 to 2012. The record is 83.3 mm (3.3 in) in 2001, marked on the chart; the median year is 33.0 mm (1.3 in).
Wettest day (Rx1day) at Grand Canyon Np 2 by year
Year
Wettest day (Rx1day)
1976
21.1 mm (0.8 in)
1977
14.5 mm (0.6 in)
1978
49.5 mm (1.9 in)
1979
28.7 mm (1.1 in)
1980
30.7 mm (1.2 in)
1981
58.9 mm (2.3 in)
1982
30.5 mm (1.2 in)
1983
79.8 mm (3.1 in)
1984
34.5 mm (1.4 in)
1985
26.7 mm (1.1 in)
1986
35.6 mm (1.4 in)
1987
20.3 mm (0.8 in)
1988
29.7 mm (1.2 in)
1989
45.7 mm (1.8 in)
1990
35.8 mm (1.4 in)
1991
35.6 mm (1.4 in)
1992
43.2 mm (1.7 in)
1993
34.3 mm (1.4 in)
1994
23.1 mm (0.9 in)
1995
38.1 mm (1.5 in)
1996
42.7 mm (1.7 in)
1997
45.2 mm (1.8 in)
1998
29.0 mm (1.1 in)
1999
48.8 mm (1.9 in)
2000
30.5 mm (1.2 in)
2001
83.3 mm (3.3 in)
2002
26.4 mm (1.0 in)
2003
24.9 mm (1.0 in)
2004
65.0 mm (2.6 in)
2005
29.5 mm (1.2 in)
2006
33.0 mm (1.3 in)
2007
40.6 mm (1.6 in)
2008
19.3 mm (0.8 in)
2009
14.5 mm (0.6 in)
2010
36.8 mm (1.4 in)
2011
22.9 mm (0.9 in)
2012
31.5 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Grand Canyon Np 2, 1976 to 2012. The record is 103.4 mm (4.1 in) in 1978, marked on the chart; the median year is 52.9 mm (2.1 in).
Wettest five days (Rx5day) at Grand Canyon Np 2 by year
Year
Wettest five days (Rx5day)
1976
46.9 mm (1.8 in)
1977
23.7 mm (0.9 in)
1978
103.4 mm (4.1 in)
1979
37.4 mm (1.5 in)
1980
63.7 mm (2.5 in)
1981
70.3 mm (2.8 in)
1982
62.7 mm (2.5 in)
1983
88.4 mm (3.5 in)
1984
68.8 mm (2.7 in)
1985
47.0 mm (1.9 in)
1986
49.5 mm (1.9 in)
1987
37.8 mm (1.5 in)
1988
49.0 mm (1.9 in)
1989
91.9 mm (3.6 in)
1990
52.5 mm (2.1 in)
1991
51.6 mm (2.0 in)
1992
55.6 mm (2.2 in)
1993
65.0 mm (2.6 in)
1994
39.6 mm (1.6 in)
1995
72.4 mm (2.9 in)
1996
45.8 mm (1.8 in)
1997
53.6 mm (2.1 in)
1998
52.9 mm (2.1 in)
1999
98.6 mm (3.9 in)
2000
55.9 mm (2.2 in)
2001
96.0 mm (3.8 in)
2002
46.9 mm (1.8 in)
2003
35.9 mm (1.4 in)
2004
69.1 mm (2.7 in)
2005
56.1 mm (2.2 in)
2006
42.7 mm (1.7 in)
2007
52.6 mm (2.1 in)
2008
41.4 mm (1.6 in)
2009
26.4 mm (1.0 in)
2010
63.5 mm (2.5 in)
2011
71.1 mm (2.8 in)
2012
34.5 mm (1.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Grand Canyon Np 2, 1976 to 2012. The record is 89 days in 1976, marked on the chart; the median year is 49 days.
Longest dry spell (CDD) at Grand Canyon Np 2 by year
Year
Longest dry spell (CDD)
1976
89 days
1977
46 days
1978
68 days
1979
37 days
1980
50 days
1981
53 days
1982
41 days
1983
65 days
1984
41 days
1985
24 days
1986
33 days
1987
37 days
1988
30 days
1989
58 days
1990
26 days
1991
63 days
1992
34 days
1993
58 days
1994
52 days
1995
38 days
1996
48 days
1997
36 days
1998
16 days
1999
75 days
2000
66 days
2001
51 days
2002
80 days
2003
75 days
2004
69 days
2005
29 days
2006
53 days
2007
52 days
2008
79 days
2009
47 days
2010
49 days
2011
19 days
2012
15 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
25 years with a frost
Across 25 years with a frost, the median last spring frost at Grand Canyon Np 2 falls on 2 June and the median first autumn frost on 24 September, which leaves a median of 115 days between them.
Fitted over all years, the growing season changes by +1.2 days per decade at this station.
Frost dates and growing season at Grand Canyon Np 2
Measure
Median, all years
Earliest period
Recent period (1977 to 2008)
Recent against earliest
Fitted trend
Last spring frost
2 June
n/a
2 June
n/a
0.0 days per decade
First autumn frost
24 September
n/a
24 September
n/a
+1.2 days per decade
Growing days
115 days
n/a
115 days
n/a
+1.2 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
30 years, 1977 to 2010
A day with at least 33.5 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 101.5 mm (4.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Grand Canyon Np 2: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
33.5 mm (1.3 in)
5 years
47.0 mm (1.9 in)
10 years
57.6 mm (2.3 in)
25 years
73.1 mm (2.9 in)
50 years
86.5 mm (3.4 in)
Longer than the 30 years of record
100 years
101.5 mm (4.0 in)
Longer than the 30 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, 30 years of values from 1977 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: 83.3 mm (3.3 in) in 2001; 79.8 mm (3.1 in) in 1983; 65.0 mm (2.6 in) in 2004.
Download the Data
Data for Grand Canyon Np 2 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grand Canyon Np 2 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.