Record envelope, standing records and threshold days for Eloy 4 NE (USC00022807), Arizona, United States, with 55 years of record.
Key Facts for Eloy 4 NE
Eloy 4 NE (USC00022807) is a weather station in Arizona, United States at 32.78 latitude and -111.52 longitude, 471 m (1,545 ft) above sea level.
The station reports from 1951 to 2005, 55 years of record.
1,464 records set at Eloy 4 NE still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Eloy 4 NE tied a daily record high maximum temperature of 41.7 C (107.1 F) on 6 September 2005.
About the Station
Location: Arizona, United States, 32.78 latitude, -111.52 longitude.
Elevation: 471 m (1,545 ft).
Period of record: 1951 to 2005, 55 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 Eloy 4 NE. 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 Eloy 4 NE, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
30.6 C (87.1 F)
-10.6 C (12.9 F)
n/a
n/a
Feb
32.8 C (91.0 F)
-7.2 C (19.0 F)
n/a
n/a
Mar
36.7 C (98.1 F)
-5.0 C (23.0 F)
n/a
n/a
Apr
39.4 C (102.9 F)
-6.7 C (19.9 F)
n/a
n/a
May
45.6 C (114.1 F)
1.7 C (35.1 F)
n/a
n/a
Jun
48.3 C (118.9 F)
6.7 C (44.1 F)
n/a
n/a
Jul
47.8 C (118.0 F)
12.2 C (54.0 F)
n/a
n/a
Aug
46.7 C (116.1 F)
12.2 C (54.0 F)
n/a
n/a
Sep
45.0 C (113.0 F)
3.3 C (37.9 F)
n/a
n/a
Oct
41.7 C (107.1 F)
-1.1 C (30.0 F)
n/a
n/a
Nov
34.4 C (93.9 F)
-6.1 C (21.0 F)
n/a
n/a
Dec
30.6 C (87.1 F)
-9.4 C (15.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Eloy 4 NE still stand. 1955 holds the most, with 48.
Standing records at Eloy 4 NE by the year they were set
Year set
Standing records
1951
19
1952
27
1953
25
1954
20
1955
48
1956
24
1957
40
1958
28
1959
27
1960
29
1961
20
1962
41
1963
40
1964
26
1965
36
1966
23
1967
11
1968
11
1969
12
1970
17
1971
28
1972
39
1973
22
1974
19
1975
11
1976
40
1977
24
1978
37
1979
35
1980
29
1981
15
1982
24
1983
18
1984
16
1985
31
1986
16
1987
28
1988
23
1989
37
1990
47
1991
17
1992
30
1993
19
1994
25
1995
34
1996
42
1997
16
1998
34
1999
21
2000
34
2001
23
2002
29
2003
36
2004
29
2005
12
All-Time Record Progression
3 new records
3 all-time records were set at Eloy 4 NE between 26 June 1990 and 4 August 2000. Each dot is a new record.
When Eloy 4 NE set new all-time records
Date
Kind
Detail
1990-06-26
Record high maximum temperature
Record high maximum temperature 48.3 C (118.9 F)
1990-08-14
Record daily precipitation
Record daily precipitation 79.5 mm (3.1 in)
2000-08-04
Record high minimum temperature
Record high minimum temperature 32.8 C (91.0 F)
Wettest Day of Each Month
Aug: 79.5 mm (3.1 in)
The wettest day on record for each calendar month at Eloy 4 NE. The most was 79.5 mm (3.1 in) on 14 August 1990.
Record daily precipitation for each month at Eloy 4 NE
Month
Record daily precipitation (mm)
Date
Jan
77.7 mm (3.1 in)
29 January 1956
Feb
40.9 mm (1.6 in)
1 February 1986
Mar
40.1 mm (1.6 in)
22 March 1954
Apr
38.4 mm (1.5 in)
16 April 1988
May
32.5 mm (1.3 in)
4 May 1982
Jun
18.0 mm (0.7 in)
18 June 2000
Jul
48.3 mm (1.9 in)
15 July 1990
Aug
79.5 mm (3.1 in)
14 August 1990
Sep
44.7 mm (1.8 in)
18 September 1985
Oct
57.4 mm (2.3 in)
1 October 1983
Nov
37.3 mm (1.5 in)
15 November 1993
Dec
41.1 mm (1.6 in)
10 December 1982
Period of Record Coverage
1951 to 2005
Complete yearUnder 90 percent of days
55 years of record at Eloy 4 NE, 1951 to 2005. 15 years have data for under 90 percent of days and are left out of rankings: 1951, 1967, 1968, 1969, 1970, 1971, 1975, 1977 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 37 complete years at Eloy 4 NE, 1952 to 2004. Blue stripes are years cooler than the station's own mean of 21.2 C (70.2 F); red stripes are warmer. The coolest year was 1955, at 20.1 C (68.2 F), and the warmest was 1976, at 22.3 C (72.2 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Eloy 4 NE as warming stripes, 1952 to 2004
Year
Annual mean temperature
Difference from the station mean
1952
21.2 C
-0.01 C
1953
20.7 C
-0.55 C
1954
21.7 C
+0.45 C
1955
20.1 C
-1.12 C
1956
21.0 C
-0.18 C
1957
21.4 C
+0.15 C
1958
21.5 C
+0.28 C
1959
21.5 C
+0.29 C
1960
21.4 C
+0.23 C
1961
21.7 C
+0.47 C
1962
21.6 C
+0.43 C
1963
21.9 C
+0.68 C
1964
20.6 C
-0.66 C
1965
21.0 C
-0.17 C
1966
21.4 C
+0.18 C
1972
20.8 C
-0.45 C
1973
20.2 C
-1.06 C
1976
22.3 C
+1.13 C
1980
21.9 C
+0.70 C
1981
22.1 C
+0.89 C
1982
20.9 C
-0.36 C
1983
21.0 C
-0.21 C
1984
20.9 C
-0.28 C
1985
21.5 C
+0.27 C
1986
21.3 C
+0.06 C
1987
20.8 C
-0.37 C
1988
21.2 C
-0.06 C
1989
21.5 C
+0.26 C
1990
20.6 C
-0.64 C
1992
20.3 C
-0.89 C
1993
20.6 C
-0.64 C
1994
21.1 C
-0.12 C
1996
21.5 C
+0.26 C
1998
20.4 C
-0.79 C
2000
22.0 C
+0.81 C
2001
21.6 C
+0.38 C
2004
21.9 C
+0.67 C
The fitted trend in annual mean temperature here over 1952 to 2004 is 0.01 C (-0.11 to 0.13) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.01 F (-0.20 to 0.23) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Eloy 4 NE
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.01 C (-0.11 to 0.13) per decade
0.01 F (-0.20 to 0.23) per decade
1952 to 2004
37
Not clearly different from zero
Mean daily maximum
0.16 C (0.00 to 0.31) per decade
0.28 F (-0.01 to 0.56) per decade
1952 to 2004
37
Not clearly different from zero
Mean daily minimum
-0.14 C (-0.32 to 0.04) per decade
-0.3 F (-0.6 to 0.1) per decade
1952 to 2004
37
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
1951 to 2005
Yearly extremes at Eloy 4 NE: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
48.3 C (118.9 F)
1990
45.0 C (113.0 F)
55
Coldest night (TNn)
-10.6 C (12.9 F)
1971
-5.6 C (21.9 F)
55
Wettest day (Rx1day)
79.5 mm (3.1 in)
1990
31.0 mm (1.2 in)
55
Wettest five days (Rx5day)
114.6 mm (4.5 in)
1983
43.2 mm (1.7 in)
55
Longest dry spell (CDD)
149 days
1972
82 days
55
Hottest day (TXx)
The hottest day of the year at Eloy 4 NE, 1951 to 2005. The record is 48.3 C (118.9 F) in 1990, marked on the chart; the median year is 45.0 C (113.0 F).
Hottest day (TXx) at Eloy 4 NE by year
Year
Hottest day (TXx)
1951
45.6 C (114.1 F)
1952
46.1 C (115.0 F)
1953
44.4 C (111.9 F)
1954
43.3 C (109.9 F)
1955
44.4 C (111.9 F)
1956
43.9 C (111.0 F)
1957
45.0 C (113.0 F)
1958
47.2 C (117.0 F)
1959
45.6 C (114.1 F)
1960
47.2 C (117.0 F)
1961
45.6 C (114.1 F)
1962
45.0 C (113.0 F)
1963
45.0 C (113.0 F)
1964
44.4 C (111.9 F)
1965
44.4 C (111.9 F)
1966
43.9 C (111.0 F)
1967
45.0 C (113.0 F)
1968
43.9 C (111.0 F)
1969
39.4 C (102.9 F)
1970
41.7 C (107.1 F)
1971
35.6 C (96.1 F)
1972
44.4 C (111.9 F)
1973
43.9 C (111.0 F)
1974
46.1 C (115.0 F)
1975
44.4 C (111.9 F)
1976
43.3 C (109.9 F)
1977
43.3 C (109.9 F)
1978
43.9 C (111.0 F)
1979
46.7 C (116.1 F)
1980
45.0 C (113.0 F)
1981
43.9 C (111.0 F)
1982
45.0 C (113.0 F)
1983
45.6 C (114.1 F)
1984
42.8 C (109.0 F)
1985
45.6 C (114.1 F)
1986
43.9 C (111.0 F)
1987
46.1 C (115.0 F)
1988
44.4 C (111.9 F)
1989
45.0 C (113.0 F)
1990
48.3 C (118.9 F)
1991
42.2 C (108.0 F)
1992
43.3 C (109.9 F)
1993
45.0 C (113.0 F)
1994
47.8 C (118.0 F)
1995
47.2 C (117.0 F)
1996
45.0 C (113.0 F)
1997
44.4 C (111.9 F)
1998
46.1 C (115.0 F)
1999
43.9 C (111.0 F)
2000
45.0 C (113.0 F)
2001
47.2 C (117.0 F)
2002
46.1 C (115.0 F)
2003
47.8 C (118.0 F)
2004
45.6 C (114.1 F)
2005
46.7 C (116.1 F)
Coldest night (TNn)
The coldest night of the year at Eloy 4 NE, 1951 to 2005. The record is -10.6 C (12.9 F) in 1971, marked on the chart; the median year is -5.6 C (21.9 F).
Coldest night (TNn) at Eloy 4 NE by year
Year
Coldest night (TNn)
1951
-3.3 C (26.1 F)
1952
-4.4 C (24.1 F)
1953
-6.7 C (19.9 F)
1954
-7.8 C (18.0 F)
1955
-7.2 C (19.0 F)
1956
-5.6 C (21.9 F)
1957
-4.4 C (24.1 F)
1958
-3.9 C (25.0 F)
1959
-2.8 C (27.0 F)
1960
-7.8 C (18.0 F)
1961
-1.7 C (28.9 F)
1962
-7.2 C (19.0 F)
1963
-8.9 C (16.0 F)
1964
-8.3 C (17.1 F)
1965
-3.9 C (25.0 F)
1966
-5.6 C (21.9 F)
1967
-7.2 C (19.0 F)
1968
-1.7 C (28.9 F)
1969
0.0 C (32.0 F)
1970
-5.6 C (21.9 F)
1971
-10.6 C (12.9 F)
1972
-6.7 C (19.9 F)
1973
-4.4 C (24.1 F)
1974
-9.4 C (15.1 F)
1975
-8.3 C (17.1 F)
1976
-6.7 C (19.9 F)
1977
-5.6 C (21.9 F)
1978
-7.2 C (19.0 F)
1979
-5.0 C (23.0 F)
1980
-2.8 C (27.0 F)
1981
-4.4 C (24.1 F)
1982
-2.8 C (27.0 F)
1983
-2.8 C (27.0 F)
1984
-3.3 C (26.1 F)
1985
-5.0 C (23.0 F)
1986
-2.2 C (28.0 F)
1987
-7.2 C (19.0 F)
1988
-6.7 C (19.9 F)
1989
-5.6 C (21.9 F)
1990
-6.7 C (19.9 F)
1991
-5.0 C (23.0 F)
1992
-5.0 C (23.0 F)
1993
-3.9 C (25.0 F)
1994
-5.6 C (21.9 F)
1995
-3.3 C (26.1 F)
1996
-6.7 C (19.9 F)
1997
-5.6 C (21.9 F)
1998
-6.7 C (19.9 F)
1999
-6.1 C (21.0 F)
2000
-5.0 C (23.0 F)
2001
-5.6 C (21.9 F)
2002
-6.1 C (21.0 F)
2003
-7.8 C (18.0 F)
2004
-6.7 C (19.9 F)
2005
-0.6 C (30.9 F)
Wettest day (Rx1day)
The wettest day of the year at Eloy 4 NE, 1951 to 2005. The record is 79.5 mm (3.1 in) in 1990, marked on the chart; the median year is 31.0 mm (1.2 in).
Wettest day (Rx1day) at Eloy 4 NE by year
Year
Wettest day (Rx1day)
1951
49.5 mm (1.9 in)
1952
36.6 mm (1.4 in)
1953
32.3 mm (1.3 in)
1954
40.1 mm (1.6 in)
1955
24.6 mm (1.0 in)
1956
77.7 mm (3.1 in)
1957
25.7 mm (1.0 in)
1958
27.7 mm (1.1 in)
1959
34.3 mm (1.4 in)
1960
21.1 mm (0.8 in)
1961
35.1 mm (1.4 in)
1962
25.4 mm (1.0 in)
1963
24.1 mm (0.9 in)
1964
20.6 mm (0.8 in)
1965
38.4 mm (1.5 in)
1966
25.9 mm (1.0 in)
1967
26.9 mm (1.1 in)
1968
32.8 mm (1.3 in)
1969
27.9 mm (1.1 in)
1970
24.4 mm (1.0 in)
1971
7.6 mm (0.30 in)
1972
51.6 mm (2.0 in)
1973
21.8 mm (0.9 in)
1974
22.9 mm (0.9 in)
1975
26.7 mm (1.1 in)
1976
27.9 mm (1.1 in)
1977
21.3 mm (0.8 in)
1978
36.8 mm (1.4 in)
1979
31.0 mm (1.2 in)
1980
34.5 mm (1.4 in)
1981
40.4 mm (1.6 in)
1982
41.1 mm (1.6 in)
1983
57.4 mm (2.3 in)
1984
33.5 mm (1.3 in)
1985
44.7 mm (1.8 in)
1986
40.9 mm (1.6 in)
1987
36.3 mm (1.4 in)
1988
38.4 mm (1.5 in)
1989
29.2 mm (1.1 in)
1990
79.5 mm (3.1 in)
1991
26.9 mm (1.1 in)
1992
37.8 mm (1.5 in)
1993
43.2 mm (1.7 in)
1994
31.8 mm (1.3 in)
1995
19.6 mm (0.8 in)
1996
32.3 mm (1.3 in)
1997
30.0 mm (1.2 in)
1998
38.1 mm (1.5 in)
1999
25.9 mm (1.0 in)
2000
27.9 mm (1.1 in)
2001
37.3 mm (1.5 in)
2002
10.7 mm (0.4 in)
2003
28.7 mm (1.1 in)
2004
22.6 mm (0.9 in)
2005
29.7 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Eloy 4 NE, 1951 to 2005. The record is 114.6 mm (4.5 in) in 1983, marked on the chart; the median year is 43.2 mm (1.7 in).
Wettest five days (Rx5day) at Eloy 4 NE by year
Year
Wettest five days (Rx5day)
1951
57.4 mm (2.3 in)
1952
39.2 mm (1.5 in)
1953
69.9 mm (2.8 in)
1954
51.8 mm (2.0 in)
1955
42.0 mm (1.7 in)
1956
80.5 mm (3.2 in)
1957
49.6 mm (2.0 in)
1958
30.7 mm (1.2 in)
1959
47.3 mm (1.9 in)
1960
41.5 mm (1.6 in)
1961
35.1 mm (1.4 in)
1962
28.1 mm (1.1 in)
1963
25.9 mm (1.0 in)
1964
33.1 mm (1.3 in)
1965
75.2 mm (3.0 in)
1966
55.3 mm (2.2 in)
1967
26.9 mm (1.1 in)
1968
45.5 mm (1.8 in)
1969
38.1 mm (1.5 in)
1970
67.3 mm (2.6 in)
1971
8.4 mm (0.33 in)
1972
89.5 mm (3.5 in)
1973
34.0 mm (1.3 in)
1974
39.9 mm (1.6 in)
1975
31.8 mm (1.3 in)
1976
32.7 mm (1.3 in)
1977
28.7 mm (1.1 in)
1978
53.3 mm (2.1 in)
1979
47.5 mm (1.9 in)
1980
34.5 mm (1.4 in)
1981
40.4 mm (1.6 in)
1982
56.3 mm (2.2 in)
1983
114.6 mm (4.5 in)
1984
54.5 mm (2.1 in)
1985
81.0 mm (3.2 in)
1986
43.2 mm (1.7 in)
1987
40.4 mm (1.6 in)
1988
49.9 mm (2.0 in)
1989
31.2 mm (1.2 in)
1990
111.5 mm (4.4 in)
1991
32.5 mm (1.3 in)
1992
74.2 mm (2.9 in)
1993
92.0 mm (3.6 in)
1994
47.8 mm (1.9 in)
1995
34.3 mm (1.4 in)
1996
36.9 mm (1.5 in)
1997
34.8 mm (1.4 in)
1998
61.0 mm (2.4 in)
1999
25.9 mm (1.0 in)
2000
49.2 mm (1.9 in)
2001
57.9 mm (2.3 in)
2002
21.8 mm (0.9 in)
2003
51.3 mm (2.0 in)
2004
33.0 mm (1.3 in)
2005
63.4 mm (2.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Eloy 4 NE, 1951 to 2005. The record is 149 days in 1972, marked on the chart; the median year is 82 days.
Longest dry spell (CDD) at Eloy 4 NE by year
Year
Longest dry spell (CDD)
1951
63 days
1952
47 days
1953
95 days
1954
68 days
1955
114 days
1956
87 days
1957
39 days
1958
66 days
1959
73 days
1960
86 days
1961
95 days
1962
96 days
1963
92 days
1964
70 days
1965
50 days
1966
84 days
1967
64 days
1968
31 days
1969
31 days
1970
75 days
1971
104 days
1972
149 days
1973
112 days
1974
109 days
1975
73 days
1976
141 days
1977
103 days
1978
77 days
1979
64 days
1980
61 days
1981
58 days
1982
57 days
1983
90 days
1984
91 days
1985
70 days
1986
58 days
1987
115 days
1988
59 days
1989
94 days
1990
50 days
1991
54 days
1992
60 days
1993
47 days
1994
64 days
1995
114 days
1996
115 days
1997
88 days
1998
93 days
1999
110 days
2000
82 days
2001
79 days
2002
123 days
2003
111 days
2004
100 days
2005
82 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
37 years with a frost
Across 37 years with a frost, the median last spring frost at Eloy 4 NE falls on 5 March and the median first autumn frost on 23 November, which leaves a median of 266 days between them.
Fitted over all years, the growing season changes by +1.7 days per decade at this station.
Frost dates and growing season at Eloy 4 NE
Measure
Median, all years
Earliest period
Recent period (1959 to 2004)
Recent against earliest
Fitted trend
Last spring frost
5 March
n/a
2 March
n/a
-3.3 days per decade
First autumn frost
23 November
n/a
26 November
n/a
-1.7 days per decade
Growing days
266 days
n/a
277 days
n/a
+1.7 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
44 years, 1952 to 2004
A day with at least 31.8 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 77.9 mm (3.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Eloy 4 NE: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
31.8 mm (1.3 in)
5 years
42.7 mm (1.7 in)
10 years
50.5 mm (2.0 in)
25 years
60.9 mm (2.4 in)
50 years
69.2 mm (2.7 in)
Longer than the 44 years of record
100 years
77.9 mm (3.1 in)
Longer than the 44 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, 44 years of values from 1952 to 2004.
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: 79.5 mm (3.1 in) in 1990; 77.7 mm (3.1 in) in 1956; 57.4 mm (2.3 in) in 1983.
Download the Data
Data for Eloy 4 NE standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Eloy 4 NE 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.