Record envelope, standing records and threshold days for Oracle (USC00026116), Arizona, United States, with 57 years of record.
Key Facts for Oracle
Oracle (USC00026116) is a weather station in Arizona, United States at 32.60 latitude and -110.78 longitude, 1,403 m (4,603 ft) above sea level.
The station reports from 1893 to 1949, 57 years of record.
1,464 records set at Oracle still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Oracle set a monthly record daily snowfall of 0.8 cm (0.3 in) on 31 October 1948.
About the Station
Location: Arizona, United States, 32.60 latitude, -110.78 longitude.
Elevation: 1,403 m (4,603 ft).
Period of record: 1893 to 1949, 57 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 Oracle. 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 Oracle, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
28.3 C (82.9 F)
-16.7 C (1.9 F)
n/a
n/a
Feb
26.7 C (80.1 F)
-15.0 C (5.0 F)
n/a
n/a
Mar
30.0 C (86.0 F)
-7.2 C (19.0 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-5.0 C (23.0 F)
n/a
n/a
May
38.9 C (102.0 F)
-1.1 C (30.0 F)
n/a
n/a
Jun
42.2 C (108.0 F)
4.4 C (39.9 F)
n/a
n/a
Jul
40.6 C (105.1 F)
10.6 C (51.1 F)
n/a
n/a
Aug
39.4 C (102.9 F)
10.0 C (50.0 F)
n/a
n/a
Sep
38.3 C (100.9 F)
3.9 C (39.0 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-1.7 C (28.9 F)
n/a
n/a
Nov
31.1 C (88.0 F)
-10.0 C (14.0 F)
n/a
n/a
Dec
26.1 C (79.0 F)
-8.3 C (17.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Oracle still stand. 1934 holds the most, with 64.
Standing records at Oracle by the year they were set
Year set
Standing records
1893
23
1894
32
1895
35
1896
34
1897
28
1898
36
1899
25
1900
15
1901
13
1902
17
1903
16
1904
35
1905
31
1906
40
1907
19
1908
15
1909
14
1910
30
1911
10
1912
14
1913
31
1914
22
1915
25
1916
38
1917
29
1918
20
1919
17
1923
20
1924
33
1925
25
1926
23
1927
39
1928
8
1929
27
1930
40
1931
33
1932
21
1933
44
1934
64
1935
24
1936
25
1937
45
1938
48
1939
46
1940
21
1941
34
1942
32
1943
32
1944
21
1945
14
1946
21
1947
32
1948
28
All-Time Record Progression
4 new records
4 all-time records were set at Oracle between 7 January 1937 and 22 January 1937. Each dot is a new record.
When Oracle set new all-time records
Date
Kind
Detail
1937-01-07
Record daily snowfall
Record daily snowfall 38.1 cm (15.0 in)
1937-01-07
Record snow depth
Record snow depth 38.1 cm (15.0 in)
1937-01-09
Record snow depth
Record snow depth 40.6 cm (16.0 in)
1937-01-22
Record low minimum temperature
Record low minimum temperature -16.7 C (1.9 F)
Wettest Day of Each Month
Dec: 109.2 mm (4.3 in)
The wettest day on record for each calendar month at Oracle. The most was 109.2 mm (4.3 in) on 10 December 1923.
Record daily precipitation for each month at Oracle
Month
Record daily precipitation (mm)
Date
Jan
86.6 mm (3.4 in)
19 January 1916
Feb
36.6 mm (1.4 in)
7 February 1941
Mar
45.7 mm (1.8 in)
4 March 1943
Apr
35.6 mm (1.4 in)
8 April 1919
May
28.7 mm (1.1 in)
10 May 1944
Jun
36.8 mm (1.4 in)
1 June 1899
Jul
56.4 mm (2.2 in)
7 July 1947
Aug
67.1 mm (2.6 in)
29 August 1910
Sep
69.9 mm (2.8 in)
22 September 1934
Oct
53.3 mm (2.1 in)
3 October 1914
Nov
72.4 mm (2.9 in)
22 November 1931
Dec
109.2 mm (4.3 in)
10 December 1923
Period of Record Coverage
1893 to 1948
Complete yearUnder 90 percent of days
53 years of record at Oracle, 1893 to 1948. 19 years have data for under 90 percent of days and are left out of rankings: 1897, 1905, 1907, 1908, 1909, 1910, 1911, 1912 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 28 complete years at Oracle, 1894 to 1943. Blue stripes are years cooler than the station's own mean of 16.6 C (61.9 F); red stripes are warmer. The coolest year was 1913, at 15.4 C (59.6 F), and the warmest was 1943, at 18.1 C (64.6 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Oracle as warming stripes, 1894 to 1943
Year
Annual mean temperature
Difference from the station mean
1894
17.0 C
+0.35 C
1896
17.4 C
+0.77 C
1898
16.2 C
-0.42 C
1899
16.3 C
-0.36 C
1900
17.2 C
+0.61 C
1901
17.1 C
+0.50 C
1902
17.2 C
+0.58 C
1903
17.0 C
+0.39 C
1904
17.6 C
+1.03 C
1906
16.9 C
+0.25 C
1913
15.4 C
-1.25 C
1914
16.3 C
-0.32 C
1915
16.3 C
-0.31 C
1916
16.6 C
-0.03 C
1917
16.7 C
+0.08 C
1918
16.4 C
-0.22 C
1919
15.9 C
-0.74 C
1925
16.7 C
+0.12 C
1927
17.2 C
+0.55 C
1930
16.8 C
+0.18 C
1931
17.2 C
+0.59 C
1937
15.8 C
-0.80 C
1938
16.0 C
-0.59 C
1939
16.0 C
-0.57 C
1940
16.8 C
+0.19 C
1941
15.5 C
-1.14 C
1942
15.6 C
-0.99 C
1943
18.1 C
+1.51 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
1893 to 1949
Yearly extremes at Oracle: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.2 C (108.0 F)
1929
38.3 C (100.9 F)
53
Coldest night (TNn)
-16.7 C (1.9 F)
1937
-6.7 C (19.9 F)
53
Wettest day (Rx1day)
109.2 mm (4.3 in)
1923
43.4 mm (1.7 in)
54
Wettest five days (Rx5day)
154.1 mm (6.1 in)
1933
67.2 mm (2.6 in)
54
Longest dry spell (CDD)
92 days
1936
52 days
54
Hottest day (TXx)
The hottest day of the year at Oracle, 1893 to 1949. The record is 42.2 C (108.0 F) in 1929, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at Oracle by year
Year
Hottest day (TXx)
1893
37.8 C (100.0 F)
1894
37.8 C (100.0 F)
1895
38.9 C (102.0 F)
1896
40.6 C (105.1 F)
1897
37.2 C (99.0 F)
1898
38.3 C (100.9 F)
1899
36.1 C (97.0 F)
1900
37.8 C (100.0 F)
1901
38.3 C (100.9 F)
1902
39.4 C (102.9 F)
1903
36.1 C (97.0 F)
1904
37.2 C (99.0 F)
1905
38.9 C (102.0 F)
1906
36.7 C (98.1 F)
1907
38.9 C (102.0 F)
1908
35.0 C (95.0 F)
1909
37.8 C (100.0 F)
1910
38.3 C (100.9 F)
1911
35.0 C (95.0 F)
1912
34.4 C (93.9 F)
1913
38.9 C (102.0 F)
1914
37.8 C (100.0 F)
1915
37.2 C (99.0 F)
1916
37.8 C (100.0 F)
1917
38.9 C (102.0 F)
1918
38.9 C (102.0 F)
1919
37.8 C (100.0 F)
1923
38.9 C (102.0 F)
1924
39.4 C (102.9 F)
1925
38.3 C (100.9 F)
1926
40.0 C (104.0 F)
1927
39.4 C (102.9 F)
1928
26.7 C (80.1 F)
1929
42.2 C (108.0 F)
1930
40.0 C (104.0 F)
1931
39.4 C (102.9 F)
1932
40.6 C (105.1 F)
1933
41.1 C (106.0 F)
1934
40.6 C (105.1 F)
1935
38.9 C (102.0 F)
1936
41.7 C (107.1 F)
1937
38.3 C (100.9 F)
1938
38.9 C (102.0 F)
1939
38.3 C (100.9 F)
1940
40.6 C (105.1 F)
1941
38.3 C (100.9 F)
1942
40.6 C (105.1 F)
1943
38.3 C (100.9 F)
1944
39.4 C (102.9 F)
1945
37.2 C (99.0 F)
1946
37.8 C (100.0 F)
1947
40.0 C (104.0 F)
1948
38.9 C (102.0 F)
1949
n/a
Coldest night (TNn)
The coldest night of the year at Oracle, 1893 to 1949. The record is -16.7 C (1.9 F) in 1937, marked on the chart; the median year is -6.7 C (19.9 F).
Coldest night (TNn) at Oracle by year
Year
Coldest night (TNn)
1893
-2.8 C (27.0 F)
1894
-6.7 C (19.9 F)
1895
-7.8 C (18.0 F)
1896
-4.4 C (24.1 F)
1897
-5.0 C (23.0 F)
1898
-11.7 C (10.9 F)
1899
-12.2 C (10.0 F)
1900
-3.9 C (25.0 F)
1901
-7.2 C (19.0 F)
1902
-5.6 C (21.9 F)
1903
-8.9 C (16.0 F)
1904
-2.8 C (27.0 F)
1905
-6.1 C (21.0 F)
1906
-5.6 C (21.9 F)
1907
-3.9 C (25.0 F)
1908
-1.1 C (30.0 F)
1909
-1.7 C (28.9 F)
1910
-6.1 C (21.0 F)
1911
-7.8 C (18.0 F)
1912
-6.1 C (21.0 F)
1913
-13.3 C (8.1 F)
1914
-6.1 C (21.0 F)
1915
-6.7 C (19.9 F)
1916
-8.3 C (17.1 F)
1917
-7.2 C (19.0 F)
1918
-6.7 C (19.9 F)
1919
-11.7 C (10.9 F)
1923
-7.8 C (18.0 F)
1924
-6.1 C (21.0 F)
1925
-9.4 C (15.1 F)
1926
-7.8 C (18.0 F)
1927
-5.0 C (23.0 F)
1928
-5.6 C (21.9 F)
1929
-3.3 C (26.1 F)
1930
-6.1 C (21.0 F)
1931
-10.0 C (14.0 F)
1932
-8.3 C (17.1 F)
1933
-5.6 C (21.9 F)
1934
-3.9 C (25.0 F)
1935
-9.4 C (15.1 F)
1936
-8.3 C (17.1 F)
1937
-16.7 C (1.9 F)
1938
-7.2 C (19.0 F)
1939
-15.0 C (5.0 F)
1940
-6.1 C (21.0 F)
1941
-7.2 C (19.0 F)
1942
-8.9 C (16.0 F)
1943
-6.7 C (19.9 F)
1944
-4.4 C (24.1 F)
1945
-4.4 C (24.1 F)
1946
-2.8 C (27.0 F)
1947
-7.2 C (19.0 F)
1948
-10.0 C (14.0 F)
1949
n/a
Wettest day (Rx1day)
The wettest day of the year at Oracle, 1893 to 1949. The record is 109.2 mm (4.3 in) in 1923, marked on the chart; the median year is 43.4 mm (1.7 in).
Wettest day (Rx1day) at Oracle by year
Year
Wettest day (Rx1day)
1893
17.5 mm (0.7 in)
1894
42.9 mm (1.7 in)
1895
51.3 mm (2.0 in)
1896
50.8 mm (2.0 in)
1897
43.4 mm (1.7 in)
1898
47.0 mm (1.9 in)
1899
40.6 mm (1.6 in)
1900
58.4 mm (2.3 in)
1901
35.1 mm (1.4 in)
1902
40.6 mm (1.6 in)
1903
36.6 mm (1.4 in)
1904
21.6 mm (0.9 in)
1905
59.9 mm (2.4 in)
1906
51.3 mm (2.0 in)
1907
31.8 mm (1.3 in)
1908
45.7 mm (1.8 in)
1909
26.4 mm (1.0 in)
1910
67.1 mm (2.6 in)
1911
31.8 mm (1.3 in)
1912
49.5 mm (1.9 in)
1913
50.8 mm (2.0 in)
1914
54.1 mm (2.1 in)
1915
70.1 mm (2.8 in)
1916
86.6 mm (3.4 in)
1917
39.4 mm (1.6 in)
1918
44.5 mm (1.8 in)
1919
48.3 mm (1.9 in)
1923
109.2 mm (4.3 in)
1924
21.6 mm (0.9 in)
1925
47.0 mm (1.9 in)
1926
29.5 mm (1.2 in)
1927
40.1 mm (1.6 in)
1928
14.5 mm (0.6 in)
1929
23.6 mm (0.9 in)
1930
66.3 mm (2.6 in)
1931
72.4 mm (2.9 in)
1932
26.7 mm (1.1 in)
1933
76.2 mm (3.0 in)
1934
69.9 mm (2.8 in)
1935
50.8 mm (2.0 in)
1936
30.0 mm (1.2 in)
1937
36.8 mm (1.4 in)
1938
45.0 mm (1.8 in)
1939
29.0 mm (1.1 in)
1940
55.4 mm (2.2 in)
1941
43.4 mm (1.7 in)
1942
39.1 mm (1.5 in)
1943
45.7 mm (1.8 in)
1944
28.7 mm (1.1 in)
1945
36.3 mm (1.4 in)
1946
26.9 mm (1.1 in)
1947
56.4 mm (2.2 in)
1948
39.6 mm (1.6 in)
1949
9.7 mm (0.38 in)
Wettest five days (Rx5day)
The wettest five days of the year at Oracle, 1893 to 1949. The record is 154.1 mm (6.1 in) in 1933, marked on the chart; the median year is 67.2 mm (2.6 in).
Wettest five days (Rx5day) at Oracle by year
Year
Wettest five days (Rx5day)
1893
17.5 mm (0.7 in)
1894
60.9 mm (2.4 in)
1895
93.4 mm (3.7 in)
1896
60.2 mm (2.4 in)
1897
51.0 mm (2.0 in)
1898
77.0 mm (3.0 in)
1899
62.8 mm (2.5 in)
1900
76.5 mm (3.0 in)
1901
71.6 mm (2.8 in)
1902
77.7 mm (3.1 in)
1903
60.9 mm (2.4 in)
1904
52.6 mm (2.1 in)
1905
141.9 mm (5.6 in)
1906
108.0 mm (4.3 in)
1907
85.3 mm (3.4 in)
1908
65.3 mm (2.6 in)
1909
50.3 mm (2.0 in)
1910
67.1 mm (2.6 in)
1911
72.7 mm (2.9 in)
1912
102.0 mm (4.0 in)
1913
76.2 mm (3.0 in)
1914
146.5 mm (5.8 in)
1915
129.7 mm (5.1 in)
1916
153.4 mm (6.0 in)
1917
58.9 mm (2.3 in)
1918
54.6 mm (2.1 in)
1919
79.3 mm (3.1 in)
1923
133.3 mm (5.2 in)
1924
67.3 mm (2.6 in)
1925
57.2 mm (2.3 in)
1926
58.2 mm (2.3 in)
1927
48.7 mm (1.9 in)
1928
19.1 mm (0.8 in)
1929
35.8 mm (1.4 in)
1930
110.3 mm (4.3 in)
1931
81.0 mm (3.2 in)
1932
44.2 mm (1.7 in)
1933
154.1 mm (6.1 in)
1934
80.3 mm (3.2 in)
1935
73.4 mm (2.9 in)
1936
40.9 mm (1.6 in)
1937
84.5 mm (3.3 in)
1938
70.4 mm (2.8 in)
1939
40.2 mm (1.6 in)
1940
94.0 mm (3.7 in)
1941
72.3 mm (2.8 in)
1942
45.1 mm (1.8 in)
1943
84.1 mm (3.3 in)
1944
36.0 mm (1.4 in)
1945
38.6 mm (1.5 in)
1946
42.4 mm (1.7 in)
1947
59.2 mm (2.3 in)
1948
48.0 mm (1.9 in)
1949
9.7 mm (0.38 in)
Longest dry spell (CDD)
The longest dry spell of the year at Oracle, 1893 to 1949. The record is 92 days in 1936, marked on the chart; the median year is 52 days.
Longest dry spell (CDD) at Oracle by year
Year
Longest dry spell (CDD)
1893
27 days
1894
43 days
1895
61 days
1896
52 days
1897
56 days
1898
68 days
1899
55 days
1900
42 days
1901
53 days
1902
43 days
1903
69 days
1904
55 days
1905
42 days
1906
59 days
1907
39 days
1908
39 days
1909
76 days
1910
50 days
1911
67 days
1912
29 days
1913
40 days
1914
37 days
1915
36 days
1916
84 days
1917
74 days
1918
62 days
1919
36 days
1923
77 days
1924
64 days
1925
44 days
1926
34 days
1927
38 days
1928
44 days
1929
56 days
1930
40 days
1931
33 days
1932
49 days
1933
52 days
1934
42 days
1935
53 days
1936
92 days
1937
59 days
1938
46 days
1939
64 days
1940
30 days
1941
35 days
1942
68 days
1943
54 days
1944
53 days
1945
81 days
1946
36 days
1947
71 days
1948
79 days
1949
18 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
28 years with a frost
Across 28 years with a frost, the median last spring frost at Oracle falls on 28 March and the median first autumn frost on 15 November, which leaves a median of 232 days between them.
Fitted over all years, the growing season changes by -8.7 days per decade at this station.
Frost dates and growing season at Oracle
Measure
Median, all years
Earliest period
Recent period (1894 to 1943)
Recent against earliest
Fitted trend
Last spring frost
28 March
n/a
28 March
n/a
+1.6 days per decade
First autumn frost
15 November
n/a
15 November
n/a
-7.1 days per decade
Growing days
232 days
n/a
232 days
n/a
-8.7 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
38 years, 1894 to 1947
A day with at least 46.1 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 89.3 mm (3.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Oracle: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
46.1 mm (1.8 in)
5 years
59.8 mm (2.4 in)
10 years
68.0 mm (2.7 in)
25 years
77.3 mm (3.0 in)
50 years
83.6 mm (3.3 in)
Longer than the 38 years of record
100 years
89.3 mm (3.5 in)
Longer than the 38 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, 38 years of values from 1894 to 1947.
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: 86.6 mm (3.4 in) in 1916; 76.2 mm (3.0 in) in 1933; 72.4 mm (2.9 in) in 1931.
Download the Data
Data for Oracle standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Oracle 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.