Record envelope, standing records and threshold days for Tempe 3 S (USC00028494), Arizona, United States, with 48 years of record.
Key Facts for Tempe 3 S
Tempe 3 S (USC00028494) is a weather station in Arizona, United States at 33.38 latitude and -111.93 longitude, 360 m (1,181 ft) above sea level.
The station reports from 1905 to 1952, 48 years of record.
1,464 records set at Tempe 3 S still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Tempe 3 S set a daily record low maximum temperature of 29.4 C (84.9 F) on 3 June 1952.
About the Station
Location: Arizona, United States, 33.38 latitude, -111.93 longitude.
Elevation: 360 m (1,181 ft).
Period of record: 1905 to 1952, 48 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 Tempe 3 S. 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 Tempe 3 S, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
30.0 C (86.0 F)
-11.1 C (12.0 F)
n/a
n/a
Feb
32.8 C (91.0 F)
-6.7 C (19.9 F)
n/a
n/a
Mar
35.0 C (95.0 F)
-5.6 C (21.9 F)
n/a
n/a
Apr
38.3 C (100.9 F)
-1.1 C (30.0 F)
n/a
n/a
May
46.1 C (115.0 F)
2.2 C (36.0 F)
n/a
n/a
Jun
47.2 C (117.0 F)
6.1 C (43.0 F)
n/a
n/a
Jul
48.3 C (118.9 F)
11.1 C (52.0 F)
n/a
n/a
Aug
47.8 C (118.0 F)
11.7 C (53.1 F)
n/a
n/a
Sep
46.1 C (115.0 F)
6.1 C (43.0 F)
n/a
n/a
Oct
41.1 C (106.0 F)
-2.2 C (28.0 F)
n/a
n/a
Nov
34.4 C (93.9 F)
-4.4 C (24.1 F)
n/a
n/a
Dec
31.7 C (89.1 F)
-7.2 C (19.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Tempe 3 S still stand. 1950 holds the most, with 67.
Standing records at Tempe 3 S by the year they were set
Year set
Standing records
1905
66
1906
66
1907
51
1908
41
1909
22
1910
45
1911
31
1912
31
1913
38
1914
30
1915
24
1916
37
1917
19
1918
41
1919
28
1920
35
1921
39
1922
27
1923
27
1924
27
1925
29
1926
23
1927
13
1928
22
1929
24
1930
41
1931
40
1932
22
1933
37
1934
34
1935
25
1936
24
1937
19
1938
17
1939
25
1940
20
1941
21
1942
12
1943
18
1944
21
1945
22
1946
16
1947
21
1948
31
1949
48
1950
67
1951
30
1952
17
All-Time Record Progression
3 new records
3 all-time records were set at Tempe 3 S between 21 January 1937 and 3 August 1943. Each dot is a new record.
When Tempe 3 S set new all-time records
Date
Kind
Detail
1937-01-21
Record daily snowfall
Record daily snowfall 5.1 cm (2.0 in)
1937-01-21
Record low maximum temperature
Record low maximum temperature 2.8 C (37.0 F)
1943-08-03
Record daily precipitation
Record daily precipitation 89.4 mm (3.5 in)
Wettest Day of Each Month
Aug: 89.4 mm (3.5 in)
The wettest day on record for each calendar month at Tempe 3 S. The most was 89.4 mm (3.5 in) on 3 August 1943.
Record daily precipitation for each month at Tempe 3 S
Month
Record daily precipitation (mm)
Date
Jan
40.6 mm (1.6 in)
29 January 1915
Feb
37.6 mm (1.5 in)
12 February 1927
Mar
43.4 mm (1.7 in)
16 March 1905
Apr
24.9 mm (1.0 in)
11 April 1905
May
24.1 mm (0.9 in)
20 May 1917
Jun
13.7 mm (0.5 in)
9 June 1905
Jul
53.3 mm (2.1 in)
2 July 1911
Aug
89.4 mm (3.5 in)
3 August 1943
Sep
79.0 mm (3.1 in)
8 September 1916
Oct
26.4 mm (1.0 in)
30 October 1914
Nov
32.5 mm (1.3 in)
12 November 1931
Dec
35.1 mm (1.4 in)
31 December 1915
Period of Record Coverage
1905 to 1952
Complete yearUnder 90 percent of days
48 years of record at Tempe 3 S, 1905 to 1952. 6 years have data for under 90 percent of days and are left out of rankings: 1923, 1925, 1927, 1946, 1948, 1952.
Cooler than the station meanWarmer than the station mean
One stripe for each of 36 complete years at Tempe 3 S, 1905 to 1951. Blue stripes are years cooler than the station's own mean of 19.7 C (67.5 F); red stripes are warmer. The coolest year was 1926, at 18.8 C (65.8 F), and the warmest was 1910, at 21.2 C (70.1 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Tempe 3 S as warming stripes, 1905 to 1951
Year
Annual mean temperature
Difference from the station mean
1905
19.8 C
+0.09 C
1906
20.1 C
+0.41 C
1907
20.5 C
+0.78 C
1908
20.7 C
+0.92 C
1909
19.9 C
+0.14 C
1910
21.2 C
+1.45 C
1911
19.7 C
-0.05 C
1912
19.2 C
-0.51 C
1913
19.6 C
-0.16 C
1914
20.9 C
+1.17 C
1915
19.7 C
-0.01 C
1916
19.9 C
+0.20 C
1918
19.7 C
-0.04 C
1919
19.2 C
-0.58 C
1921
19.6 C
-0.11 C
1922
19.0 C
-0.71 C
1926
18.8 C
-0.97 C
1928
19.8 C
+0.06 C
1929
19.4 C
-0.35 C
1931
20.3 C
+0.59 C
1932
19.2 C
-0.49 C
1933
19.1 C
-0.62 C
1934
20.6 C
+0.90 C
1935
19.2 C
-0.53 C
1936
20.1 C
+0.40 C
1937
19.4 C
-0.38 C
1938
19.2 C
-0.54 C
1939
19.8 C
+0.02 C
1940
20.7 C
+0.95 C
1941
19.1 C
-0.66 C
1942
18.9 C
-0.80 C
1943
20.0 C
+0.28 C
1947
19.6 C
-0.13 C
1949
19.3 C
-0.41 C
1950
20.1 C
+0.38 C
1951
19.2 C
-0.53 C
The fitted trend in annual mean temperature here over 1905 to 1951 is -0.13 C (-0.28 to 0.01) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.24 F (-0.50 to 0.01) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Tempe 3 S
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.13 C (-0.28 to 0.01) per decade
-0.24 F (-0.50 to 0.01) per decade
1905 to 1951
36
Not clearly different from zero
Mean daily maximum
-0.20 C (-0.42 to 0.01) per decade
-0.37 F (-0.76 to 0.02) per decade
1905 to 1951
36
Not clearly different from zero
Mean daily minimum
-0.1 C (-0.3 to 0.1) per decade
-0.1 F (-0.5 to 0.3) per decade
1905 to 1951
36
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
1905 to 1952
Yearly extremes at Tempe 3 S: 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)
1905
45.0 C (113.0 F)
48
Coldest night (TNn)
-11.1 C (12.0 F)
1913
-5.0 C (23.0 F)
48
Wettest day (Rx1day)
89.4 mm (3.5 in)
1943
27.3 mm (1.1 in)
48
Wettest five days (Rx5day)
106.2 mm (4.2 in)
1911
38.0 mm (1.5 in)
48
Longest dry spell (CDD)
149 days
1928
65 days
48
Hottest day (TXx)
The hottest day of the year at Tempe 3 S, 1905 to 1952. The record is 48.3 C (118.9 F) in 1905, marked on the chart; the median year is 45.0 C (113.0 F).
Hottest day (TXx) at Tempe 3 S by year
Year
Hottest day (TXx)
1905
48.3 C (118.9 F)
1906
46.1 C (115.0 F)
1907
48.3 C (118.9 F)
1908
46.7 C (116.1 F)
1909
43.9 C (111.0 F)
1910
46.1 C (115.0 F)
1911
43.3 C (109.9 F)
1912
46.1 C (115.0 F)
1913
44.4 C (111.9 F)
1914
45.6 C (114.1 F)
1915
44.4 C (111.9 F)
1916
44.4 C (111.9 F)
1917
45.6 C (114.1 F)
1918
45.6 C (114.1 F)
1919
45.6 C (114.1 F)
1920
45.0 C (113.0 F)
1921
43.3 C (109.9 F)
1922
43.9 C (111.0 F)
1923
43.9 C (111.0 F)
1924
43.3 C (109.9 F)
1925
43.9 C (111.0 F)
1926
46.1 C (115.0 F)
1927
44.4 C (111.9 F)
1928
44.4 C (111.9 F)
1929
47.2 C (117.0 F)
1930
45.0 C (113.0 F)
1931
45.6 C (114.1 F)
1932
44.4 C (111.9 F)
1933
46.1 C (115.0 F)
1934
46.1 C (115.0 F)
1935
45.0 C (113.0 F)
1936
45.6 C (114.1 F)
1937
45.0 C (113.0 F)
1938
44.4 C (111.9 F)
1939
46.1 C (115.0 F)
1940
46.7 C (116.1 F)
1941
42.8 C (109.0 F)
1942
43.3 C (109.9 F)
1943
45.6 C (114.1 F)
1944
45.0 C (113.0 F)
1945
43.3 C (109.9 F)
1946
43.9 C (111.0 F)
1947
44.4 C (111.9 F)
1948
46.1 C (115.0 F)
1949
43.9 C (111.0 F)
1950
45.6 C (114.1 F)
1951
45.6 C (114.1 F)
1952
44.4 C (111.9 F)
Coldest night (TNn)
The coldest night of the year at Tempe 3 S, 1905 to 1952. The record is -11.1 C (12.0 F) in 1913, marked on the chart; the median year is -5.0 C (23.0 F).
Coldest night (TNn) at Tempe 3 S by year
Year
Coldest night (TNn)
1905
-6.1 C (21.0 F)
1906
-7.8 C (18.0 F)
1907
-4.4 C (24.1 F)
1908
-3.3 C (26.1 F)
1909
-5.0 C (23.0 F)
1910
-5.0 C (23.0 F)
1911
-6.7 C (19.9 F)
1912
-6.7 C (19.9 F)
1913
-11.1 C (12.0 F)
1914
-3.9 C (25.0 F)
1915
-5.0 C (23.0 F)
1916
-6.7 C (19.9 F)
1917
-3.9 C (25.0 F)
1918
-4.4 C (24.1 F)
1919
-5.6 C (21.9 F)
1920
-6.7 C (19.9 F)
1921
-6.1 C (21.0 F)
1922
-7.2 C (19.0 F)
1923
-5.0 C (23.0 F)
1924
-5.6 C (21.9 F)
1925
-7.2 C (19.0 F)
1926
-7.2 C (19.0 F)
1927
-3.3 C (26.1 F)
1928
-5.0 C (23.0 F)
1929
-4.4 C (24.1 F)
1930
-5.0 C (23.0 F)
1931
-3.9 C (25.0 F)
1932
-6.1 C (21.0 F)
1933
-6.1 C (21.0 F)
1934
-5.0 C (23.0 F)
1935
-4.4 C (24.1 F)
1936
-4.4 C (24.1 F)
1937
-7.2 C (19.0 F)
1938
-4.4 C (24.1 F)
1939
-3.9 C (25.0 F)
1940
-4.4 C (24.1 F)
1941
-3.3 C (26.1 F)
1942
-2.8 C (27.0 F)
1943
-3.3 C (26.1 F)
1944
-4.4 C (24.1 F)
1945
-3.9 C (25.0 F)
1946
-3.3 C (26.1 F)
1947
-4.4 C (24.1 F)
1948
-7.8 C (18.0 F)
1949
-6.7 C (19.9 F)
1950
-8.9 C (16.0 F)
1951
-6.7 C (19.9 F)
1952
-6.1 C (21.0 F)
Wettest day (Rx1day)
The wettest day of the year at Tempe 3 S, 1905 to 1952. The record is 89.4 mm (3.5 in) in 1943, marked on the chart; the median year is 27.3 mm (1.1 in).
Wettest day (Rx1day) at Tempe 3 S by year
Year
Wettest day (Rx1day)
1905
43.4 mm (1.7 in)
1906
46.2 mm (1.8 in)
1907
27.4 mm (1.1 in)
1908
33.5 mm (1.3 in)
1909
22.1 mm (0.9 in)
1910
18.0 mm (0.7 in)
1911
53.3 mm (2.1 in)
1912
21.6 mm (0.9 in)
1913
40.4 mm (1.6 in)
1914
30.5 mm (1.2 in)
1915
40.6 mm (1.6 in)
1916
79.0 mm (3.1 in)
1917
24.1 mm (0.9 in)
1918
20.3 mm (0.8 in)
1919
49.8 mm (2.0 in)
1920
36.8 mm (1.4 in)
1921
12.2 mm (0.5 in)
1922
27.2 mm (1.1 in)
1923
39.1 mm (1.5 in)
1924
18.0 mm (0.7 in)
1925
24.1 mm (0.9 in)
1926
34.8 mm (1.4 in)
1927
37.6 mm (1.5 in)
1928
34.3 mm (1.4 in)
1929
22.4 mm (0.9 in)
1930
26.9 mm (1.1 in)
1931
32.5 mm (1.3 in)
1932
21.3 mm (0.8 in)
1933
26.4 mm (1.0 in)
1934
22.6 mm (0.9 in)
1935
26.7 mm (1.1 in)
1936
49.5 mm (1.9 in)
1937
29.2 mm (1.1 in)
1938
14.0 mm (0.6 in)
1939
23.9 mm (0.9 in)
1940
23.9 mm (0.9 in)
1941
35.1 mm (1.4 in)
1942
11.7 mm (0.5 in)
1943
89.4 mm (3.5 in)
1944
32.5 mm (1.3 in)
1945
17.8 mm (0.7 in)
1946
48.8 mm (1.9 in)
1947
31.2 mm (1.2 in)
1948
18.0 mm (0.7 in)
1949
26.7 mm (1.1 in)
1950
24.4 mm (1.0 in)
1951
76.7 mm (3.0 in)
1952
20.1 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Tempe 3 S, 1905 to 1952. The record is 106.2 mm (4.2 in) in 1911, marked on the chart; the median year is 38.0 mm (1.5 in).
Wettest five days (Rx5day) at Tempe 3 S by year
Year
Wettest five days (Rx5day)
1905
90.6 mm (3.6 in)
1906
46.2 mm (1.8 in)
1907
51.8 mm (2.0 in)
1908
43.5 mm (1.7 in)
1909
28.2 mm (1.1 in)
1910
30.0 mm (1.2 in)
1911
106.2 mm (4.2 in)
1912
34.8 mm (1.4 in)
1913
53.4 mm (2.1 in)
1914
69.7 mm (2.7 in)
1915
50.8 mm (2.0 in)
1916
89.9 mm (3.5 in)
1917
32.4 mm (1.3 in)
1918
26.2 mm (1.0 in)
1919
49.8 mm (2.0 in)
1920
39.6 mm (1.6 in)
1921
26.0 mm (1.0 in)
1922
28.5 mm (1.1 in)
1923
41.9 mm (1.6 in)
1924
26.4 mm (1.0 in)
1925
26.1 mm (1.0 in)
1926
51.8 mm (2.0 in)
1927
54.9 mm (2.2 in)
1928
42.9 mm (1.7 in)
1929
24.4 mm (1.0 in)
1930
35.6 mm (1.4 in)
1931
62.5 mm (2.5 in)
1932
38.1 mm (1.5 in)
1933
34.8 mm (1.4 in)
1934
24.9 mm (1.0 in)
1935
49.6 mm (2.0 in)
1936
67.3 mm (2.6 in)
1937
37.3 mm (1.5 in)
1938
27.7 mm (1.1 in)
1939
42.2 mm (1.7 in)
1940
30.8 mm (1.2 in)
1941
54.1 mm (2.1 in)
1942
19.6 mm (0.8 in)
1943
100.4 mm (4.0 in)
1944
37.9 mm (1.5 in)
1945
27.5 mm (1.1 in)
1946
67.6 mm (2.7 in)
1947
31.2 mm (1.2 in)
1948
20.5 mm (0.8 in)
1949
35.2 mm (1.4 in)
1950
26.9 mm (1.1 in)
1951
96.7 mm (3.8 in)
1952
20.6 mm (0.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Tempe 3 S, 1905 to 1952. The record is 149 days in 1928, marked on the chart; the median year is 65 days.
Longest dry spell (CDD) at Tempe 3 S by year
Year
Longest dry spell (CDD)
1905
50 days
1906
87 days
1907
68 days
1908
78 days
1909
87 days
1910
91 days
1911
89 days
1912
63 days
1913
83 days
1914
39 days
1915
43 days
1916
80 days
1917
69 days
1918
61 days
1919
67 days
1920
62 days
1921
64 days
1922
48 days
1923
51 days
1924
72 days
1925
54 days
1926
59 days
1927
39 days
1928
149 days
1929
102 days
1930
39 days
1931
65 days
1932
49 days
1933
51 days
1934
40 days
1935
72 days
1936
115 days
1937
80 days
1938
107 days
1939
64 days
1940
46 days
1941
75 days
1942
80 days
1943
71 days
1944
49 days
1945
79 days
1946
56 days
1947
72 days
1948
37 days
1949
51 days
1950
103 days
1951
62 days
1952
43 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
36 years with a frost
Across 36 years with a frost, the median last spring frost at Tempe 3 S falls on 28 February and the median first autumn frost on 24 November, which leaves a median of 271 days between them.
Fitted over all years, the growing season changes by +0.8 days per decade at this station.
Frost dates and growing season at Tempe 3 S
Measure
Median, all years
Earliest period
Recent period (1911 to 1951)
Recent against earliest
Fitted trend
Last spring frost
28 February
n/a
3 March
n/a
+0.9 days per decade
First autumn frost
24 November
n/a
22 November
n/a
+1.8 days per decade
Growing days
271 days
n/a
271 days
n/a
+0.8 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, 1905 to 1951
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 99.2 mm (3.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Tempe 3 S: 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
42.3 mm (1.7 in)
10 years
53.0 mm (2.1 in)
25 years
69.1 mm (2.7 in)
50 years
83.2 mm (3.3 in)
Longer than the 45 years of record
100 years
99.2 mm (3.9 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 1905 to 1951.
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: 89.4 mm (3.5 in) in 1943; 79.0 mm (3.1 in) in 1916; 76.7 mm (3.0 in) in 1951.
Download the Data
Data for Tempe 3 S standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tempe 3 S 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.