Record envelope, standing records and threshold days for Mesa (USC00025467), Arizona, United States, with 122 years of record.
Key Facts for Mesa
Mesa (USC00025467) is a weather station in Arizona, United States at 33.41 latitude and -111.82 longitude, 376 m (1,235 ft) above sea level.
The station reports from 1896 to 2017, 122 years of record.
1,464 records set at Mesa still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Mesa set a daily record precipitation of 1.5 mm (0.06 in) on 9 May 2017.
About the Station
Location: Arizona, United States, 33.41 latitude, -111.82 longitude.
Elevation: 376 m (1,235 ft).
Period of record: 1896 to 2017, 122 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 Mesa. 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 Mesa, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
31.7 C (89.1 F)
-9.4 C (15.1 F)
n/a
n/a
Feb
35.0 C (95.0 F)
-7.2 C (19.0 F)
n/a
n/a
Mar
37.2 C (99.0 F)
-4.4 C (24.1 F)
n/a
n/a
Apr
41.1 C (106.0 F)
-1.1 C (30.0 F)
n/a
n/a
May
47.8 C (118.0 F)
2.8 C (37.0 F)
n/a
n/a
Jun
46.7 C (116.1 F)
6.1 C (43.0 F)
n/a
n/a
Jul
48.3 C (118.9 F)
12.2 C (54.0 F)
n/a
n/a
Aug
46.1 C (115.0 F)
10.6 C (51.1 F)
n/a
n/a
Sep
45.0 C (113.0 F)
4.4 C (39.9 F)
n/a
n/a
Oct
41.7 C (107.1 F)
-1.1 C (30.0 F)
n/a
n/a
Nov
36.1 C (97.0 F)
-5.6 C (21.9 F)
n/a
n/a
Dec
30.0 C (86.0 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 Mesa still stand. 1910 holds the most, with 56.
Standing records at Mesa by the year they were set
Year set
Standing records
1896
30
1897
18
1898
13
1899
19
1900
11
1901
15
1902
9
1903
17
1904
25
1905
22
1906
36
1907
16
1908
12
1909
17
1910
56
1911
17
1912
16
1915
14
1916
25
1917
16
1918
20
1919
21
1920
29
1921
29
1922
25
1923
20
1924
12
1925
19
1926
13
1927
19
1928
11
1929
9
1930
22
1931
13
1932
12
1933
22
1934
17
1935
13
1936
9
1937
12
1938
21
1939
13
1940
16
1941
2
1942
7
1943
8
1944
12
1945
10
1946
10
1947
18
1948
15
1949
22
1950
25
1951
10
1952
9
1953
15
1954
14
1955
20
1956
11
1957
16
1958
12
1959
10
1960
12
1961
4
1962
14
1963
9
1964
6
1965
16
1966
8
1967
5
1968
6
1969
12
1970
11
1971
19
1972
16
1973
3
1974
11
1975
9
1976
14
1977
21
1978
19
1979
16
1980
27
1981
18
1982
15
1983
16
1984
19
1985
26
1986
26
1987
24
1988
15
All-Time Record Progression
2 new records
2 all-time records were set at Mesa between 4 January 1950 and 7 July 1983. Each dot is a new record.
When Mesa set new all-time records
Date
Kind
Detail
1950-01-04
Record low minimum temperature
Record low minimum temperature -9.4 C (15.1 F)
1983-07-07
Record high minimum temperature
Record high minimum temperature 33.3 C (91.9 F)
Wettest Day of Each Month
Aug: 70.6 mm (2.8 in)
The wettest day on record for each calendar month at Mesa. The most was 70.6 mm (2.8 in) on 1 August 1906.
Record daily precipitation for each month at Mesa
Month
Record daily precipitation (mm)
Date
Jan
41.1 mm (1.6 in)
4 January 2005
Feb
36.1 mm (1.4 in)
14 February 2003
Mar
41.4 mm (1.6 in)
4 March 1983
Apr
35.1 mm (1.4 in)
11 April 1905
May
30.5 mm (1.2 in)
5 May 1976
Jun
26.2 mm (1.0 in)
30 June 1911
Jul
58.2 mm (2.3 in)
26 July 2006
Aug
70.6 mm (2.8 in)
1 August 1906
Sep
69.9 mm (2.8 in)
8 September 2014
Oct
56.9 mm (2.2 in)
22 October 2004
Nov
58.4 mm (2.3 in)
15 November 1993
Dec
57.9 mm (2.3 in)
15 December 1967
Period of Record Coverage
1896 to 1988
Complete yearUnder 90 percent of days
91 years of record at Mesa, 1896 to 1988. 4 years have data for under 90 percent of days and are left out of rankings: 1896, 1912, 1931, 1988.
Cooler than the station meanWarmer than the station mean
One stripe for each of 83 complete years at Mesa, 1897 to 1987. Blue stripes are years cooler than the station's own mean of 20.5 C (68.9 F); red stripes are warmer. The coolest year was 1932, at 18.9 C (66.1 F), and the warmest was 1986, at 22.7 C (72.9 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Mesa as warming stripes, 1897 to 1987
Year
Annual mean temperature
Difference from the station mean
1897
20.2 C
-0.36 C
1898
20.2 C
-0.29 C
1899
19.5 C
-1.03 C
1900
20.7 C
+0.19 C
1901
19.9 C
-0.60 C
1902
20.1 C
-0.46 C
1903
20.7 C
+0.19 C
1904
20.9 C
+0.37 C
1905
20.7 C
+0.15 C
1906
20.7 C
+0.20 C
1907
20.7 C
+0.22 C
1908
20.4 C
-0.14 C
1909
20.4 C
-0.10 C
1910
21.8 C
+1.24 C
1911
19.7 C
-0.80 C
1915
19.3 C
-1.20 C
1916
19.8 C
-0.71 C
1917
19.9 C
-0.65 C
1918
19.3 C
-1.24 C
1919
19.1 C
-1.40 C
1920
19.0 C
-1.56 C
1921
19.9 C
-0.60 C
1922
19.2 C
-1.32 C
1924
19.8 C
-0.71 C
1926
20.0 C
-0.48 C
1928
20.1 C
-0.42 C
1929
19.5 C
-1.03 C
1930
19.6 C
-0.91 C
1932
18.9 C
-1.59 C
1933
19.3 C
-1.19 C
1934
21.2 C
+0.72 C
1935
19.5 C
-1.01 C
1936
21.1 C
+0.55 C
1937
20.2 C
-0.29 C
1938
19.7 C
-0.78 C
1939
20.1 C
-0.45 C
1940
20.8 C
+0.31 C
1941
19.7 C
-0.77 C
1942
19.9 C
-0.60 C
1943
20.7 C
+0.18 C
1944
19.2 C
-1.30 C
1946
20.1 C
-0.41 C
1947
20.4 C
-0.10 C
1948
19.9 C
-0.63 C
1949
19.9 C
-0.61 C
1950
21.0 C
+0.44 C
1951
20.4 C
-0.15 C
1952
20.2 C
-0.35 C
1953
20.6 C
+0.04 C
1954
21.3 C
+0.83 C
1955
19.8 C
-0.69 C
1956
20.3 C
-0.23 C
1957
20.5 C
+0.01 C
1958
21.3 C
+0.75 C
1959
21.2 C
+0.69 C
1960
20.8 C
+0.25 C
1961
20.9 C
+0.35 C
1962
21.2 C
+0.64 C
1963
21.1 C
+0.57 C
1964
20.0 C
-0.56 C
1965
20.4 C
-0.12 C
1966
21.2 C
+0.69 C
1967
20.8 C
+0.31 C
1968
20.6 C
+0.08 C
1969
21.1 C
+0.62 C
1970
20.8 C
+0.31 C
1971
20.2 C
-0.28 C
1972
21.1 C
+0.59 C
1973
20.6 C
+0.11 C
1974
21.1 C
+0.60 C
1975
20.5 C
-0.02 C
1976
21.2 C
+0.67 C
1977
21.9 C
+1.34 C
1978
21.7 C
+1.18 C
1979
21.4 C
+0.93 C
1980
22.0 C
+1.48 C
1981
22.5 C
+2.02 C
1982
21.3 C
+0.80 C
1983
21.4 C
+0.88 C
1984
21.7 C
+1.23 C
1985
21.9 C
+1.43 C
1986
22.7 C
+2.23 C
1987
22.3 C
+1.83 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1897 to 1987. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 83 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Mesa
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.2) per decade
0.3 F (0.2 to 0.4) per decade
1897 to 1987
83
Rise
Mean daily maximum
0.04 C (-0.02 to 0.10) per decade
0.08 F (-0.03 to 0.18) per decade
1897 to 1987
83
Not clearly different from zero
Mean daily minimum
0.3 C (0.3 to 0.4) per decade
0.6 F (0.5 to 0.7) per decade
1897 to 1987
83
Rise
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
1896 to 2017
Yearly extremes at Mesa: 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)
1907
44.4 C (111.9 F)
91
Coldest night (TNn)
-9.4 C (15.1 F)
1950
-5.0 C (23.0 F)
91
Wettest day (Rx1day)
70.6 mm (2.8 in)
1906
29.2 mm (1.1 in)
120
Wettest five days (Rx5day)
128.3 mm (5.1 in)
1911
39.8 mm (1.6 in)
120
Longest dry spell (CDD)
154 days
1924
81 days
120
Hottest day (TXx)
The hottest day of the year at Mesa, 1896 to 2017. The record is 48.3 C (118.9 F) in 1907, marked on the chart; the median year is 44.4 C (111.9 F).
Hottest day (TXx) at Mesa by year
Year
Hottest day (TXx)
1896
46.7 C (116.1 F)
1897
43.9 C (111.0 F)
1898
45.0 C (113.0 F)
1899
43.9 C (111.0 F)
1900
44.4 C (111.9 F)
1901
45.0 C (113.0 F)
1902
46.1 C (115.0 F)
1903
45.6 C (114.1 F)
1904
44.4 C (111.9 F)
1905
47.8 C (118.0 F)
1906
45.6 C (114.1 F)
1907
48.3 C (118.9 F)
1908
46.1 C (115.0 F)
1909
45.6 C (114.1 F)
1910
47.8 C (118.0 F)
1911
42.8 C (109.0 F)
1912
43.3 C (109.9 F)
1915
44.4 C (111.9 F)
1916
44.4 C (111.9 F)
1917
43.3 C (109.9 F)
1918
45.0 C (113.0 F)
1919
43.9 C (111.0 F)
1920
43.3 C (109.9 F)
1921
43.3 C (109.9 F)
1922
45.0 C (113.0 F)
1923
43.3 C (109.9 F)
1924
43.9 C (111.0 F)
1925
46.7 C (116.1 F)
1926
45.6 C (114.1 F)
1927
44.4 C (111.9 F)
1928
44.4 C (111.9 F)
1929
46.1 C (115.0 F)
1930
42.2 C (108.0 F)
1931
41.7 C (107.1 F)
1932
42.2 C (108.0 F)
1933
44.4 C (111.9 F)
1934
43.9 C (111.0 F)
1935
42.8 C (109.0 F)
1936
45.0 C (113.0 F)
1937
43.9 C (111.0 F)
1938
43.9 C (111.0 F)
1939
44.4 C (111.9 F)
1940
46.1 C (115.0 F)
1941
42.2 C (108.0 F)
1942
44.4 C (111.9 F)
1943
45.6 C (114.1 F)
1944
44.4 C (111.9 F)
1945
45.0 C (113.0 F)
1946
43.9 C (111.0 F)
1947
45.0 C (113.0 F)
1948
44.4 C (111.9 F)
1949
44.4 C (111.9 F)
1950
44.4 C (111.9 F)
1951
44.4 C (111.9 F)
1952
43.9 C (111.0 F)
1953
45.6 C (114.1 F)
1954
44.4 C (111.9 F)
1955
44.4 C (111.9 F)
1956
44.4 C (111.9 F)
1957
45.6 C (114.1 F)
1958
47.2 C (117.0 F)
1959
44.4 C (111.9 F)
1960
45.6 C (114.1 F)
1961
44.4 C (111.9 F)
1962
45.0 C (113.0 F)
1963
44.4 C (111.9 F)
1964
44.4 C (111.9 F)
1965
44.4 C (111.9 F)
1966
44.4 C (111.9 F)
1967
43.3 C (109.9 F)
1968
45.6 C (114.1 F)
1969
44.4 C (111.9 F)
1970
46.7 C (116.1 F)
1971
44.4 C (111.9 F)
1972
45.6 C (114.1 F)
1973
45.6 C (114.1 F)
1974
46.1 C (115.0 F)
1975
45.0 C (113.0 F)
1976
44.4 C (111.9 F)
1977
45.0 C (113.0 F)
1978
45.0 C (113.0 F)
1979
46.7 C (116.1 F)
1980
45.6 C (114.1 F)
1981
45.0 C (113.0 F)
1982
44.4 C (111.9 F)
1983
46.1 C (115.0 F)
1984
44.4 C (111.9 F)
1985
46.1 C (115.0 F)
1986
45.6 C (114.1 F)
1987
45.0 C (113.0 F)
1988
46.1 C (115.0 F)
1989
n/a
1990
n/a
1991
n/a
1992
n/a
1993
n/a
1994
n/a
1995
n/a
1996
n/a
1997
n/a
1998
n/a
1999
n/a
2000
n/a
2001
n/a
2002
n/a
2003
n/a
2004
n/a
2005
n/a
2006
n/a
2007
n/a
2008
n/a
2009
n/a
2010
n/a
2011
n/a
2012
n/a
2013
n/a
2014
n/a
2015
n/a
2016
n/a
2017
n/a
Coldest night (TNn)
The coldest night of the year at Mesa, 1896 to 2017. The record is -9.4 C (15.1 F) in 1950, marked on the chart; the median year is -5.0 C (23.0 F).
Coldest night (TNn) at Mesa by year
Year
Coldest night (TNn)
1896
0.0 C (32.0 F)
1897
-4.4 C (24.1 F)
1898
-4.4 C (24.1 F)
1899
-4.4 C (24.1 F)
1900
-7.8 C (18.0 F)
1901
-8.3 C (17.1 F)
1902
-4.4 C (24.1 F)
1903
-4.4 C (24.1 F)
1904
-7.8 C (18.0 F)
1905
-3.9 C (25.0 F)
1906
-5.0 C (23.0 F)
1907
-3.3 C (26.1 F)
1908
-2.2 C (28.0 F)
1909
-6.1 C (21.0 F)
1910
-5.6 C (21.9 F)
1911
-6.1 C (21.0 F)
1912
-6.7 C (19.9 F)
1915
-6.1 C (21.0 F)
1916
-7.2 C (19.0 F)
1917
-3.9 C (25.0 F)
1918
-5.0 C (23.0 F)
1919
-5.0 C (23.0 F)
1920
-6.1 C (21.0 F)
1921
-5.0 C (23.0 F)
1922
-6.7 C (19.9 F)
1923
-3.9 C (25.0 F)
1924
-4.4 C (24.1 F)
1925
-6.7 C (19.9 F)
1926
-6.7 C (19.9 F)
1927
-3.9 C (25.0 F)
1928
-5.6 C (21.9 F)
1929
-5.6 C (21.9 F)
1930
-7.2 C (19.0 F)
1931
-5.6 C (21.9 F)
1932
-7.2 C (19.0 F)
1933
-7.2 C (19.0 F)
1934
-6.7 C (19.9 F)
1935
-5.6 C (21.9 F)
1936
-4.4 C (24.1 F)
1937
-7.2 C (19.0 F)
1938
-5.6 C (21.9 F)
1939
-5.6 C (21.9 F)
1940
-6.7 C (19.9 F)
1941
-2.8 C (27.0 F)
1942
-3.9 C (25.0 F)
1943
-3.3 C (26.1 F)
1944
-3.9 C (25.0 F)
1945
-5.0 C (23.0 F)
1946
-4.4 C (24.1 F)
1947
-3.9 C (25.0 F)
1948
-6.7 C (19.9 F)
1949
-6.1 C (21.0 F)
1950
-9.4 C (15.1 F)
1951
-5.6 C (21.9 F)
1952
-4.4 C (24.1 F)
1953
-7.2 C (19.0 F)
1954
-6.1 C (21.0 F)
1955
-6.1 C (21.0 F)
1956
-5.0 C (23.0 F)
1957
-1.1 C (30.0 F)
1958
-3.3 C (26.1 F)
1959
-2.8 C (27.0 F)
1960
-5.6 C (21.9 F)
1961
-2.2 C (28.0 F)
1962
-6.7 C (19.9 F)
1963
-7.2 C (19.0 F)
1964
-6.7 C (19.9 F)
1965
-3.3 C (26.1 F)
1966
-3.3 C (26.1 F)
1967
-3.9 C (25.0 F)
1968
-5.6 C (21.9 F)
1969
-3.9 C (25.0 F)
1970
-4.4 C (24.1 F)
1971
-6.1 C (21.0 F)
1972
-3.9 C (25.0 F)
1973
-2.8 C (27.0 F)
1974
-4.4 C (24.1 F)
1975
-2.8 C (27.0 F)
1976
-5.0 C (23.0 F)
1977
-2.2 C (28.0 F)
1978
-5.0 C (23.0 F)
1979
-2.8 C (27.0 F)
1980
-0.6 C (30.9 F)
1981
-1.1 C (30.0 F)
1982
-0.6 C (30.9 F)
1983
-1.1 C (30.0 F)
1984
-1.7 C (28.9 F)
1985
-3.9 C (25.0 F)
1986
0.0 C (32.0 F)
1987
-5.0 C (23.0 F)
1988
-0.6 C (30.9 F)
1989
n/a
1990
n/a
1991
n/a
1992
n/a
1993
n/a
1994
n/a
1995
n/a
1996
n/a
1997
n/a
1998
n/a
1999
n/a
2000
n/a
2001
n/a
2002
n/a
2003
n/a
2004
n/a
2005
n/a
2006
n/a
2007
n/a
2008
n/a
2009
n/a
2010
n/a
2011
n/a
2012
n/a
2013
n/a
2014
n/a
2015
n/a
2016
n/a
2017
n/a
Wettest day (Rx1day)
The wettest day of the year at Mesa, 1896 to 2017. The record is 70.6 mm (2.8 in) in 1906, marked on the chart; the median year is 29.2 mm (1.1 in).
Wettest day (Rx1day) at Mesa by year
Year
Wettest day (Rx1day)
1896
26.9 mm (1.1 in)
1897
27.9 mm (1.1 in)
1898
38.1 mm (1.5 in)
1899
28.4 mm (1.1 in)
1900
40.6 mm (1.6 in)
1901
29.2 mm (1.1 in)
1902
24.4 mm (1.0 in)
1903
27.2 mm (1.1 in)
1904
33.8 mm (1.3 in)
1905
35.1 mm (1.4 in)
1906
70.6 mm (2.8 in)
1907
28.4 mm (1.1 in)
1908
30.2 mm (1.2 in)
1909
28.2 mm (1.1 in)
1910
25.9 mm (1.0 in)
1911
51.3 mm (2.0 in)
1912
25.4 mm (1.0 in)
1915
43.9 mm (1.7 in)
1916
59.7 mm (2.4 in)
1917
38.9 mm (1.5 in)
1918
22.4 mm (0.9 in)
1919
53.1 mm (2.1 in)
1920
33.3 mm (1.3 in)
1921
20.3 mm (0.8 in)
1922
28.2 mm (1.1 in)
1923
38.9 mm (1.5 in)
1924
20.8 mm (0.8 in)
1925
22.6 mm (0.9 in)
1926
41.1 mm (1.6 in)
1927
41.4 mm (1.6 in)
1928
30.2 mm (1.2 in)
1929
19.6 mm (0.8 in)
1930
22.9 mm (0.9 in)
1931
30.7 mm (1.2 in)
1932
30.0 mm (1.2 in)
1933
24.4 mm (1.0 in)
1934
21.8 mm (0.9 in)
1935
20.1 mm (0.8 in)
1936
46.2 mm (1.8 in)
1937
36.1 mm (1.4 in)
1938
16.5 mm (0.6 in)
1939
14.0 mm (0.6 in)
1940
29.0 mm (1.1 in)
1941
42.2 mm (1.7 in)
1942
19.1 mm (0.8 in)
1943
59.4 mm (2.3 in)
1944
31.8 mm (1.3 in)
1945
9.4 mm (0.37 in)
1946
41.9 mm (1.6 in)
1947
38.9 mm (1.5 in)
1948
12.4 mm (0.5 in)
1949
24.6 mm (1.0 in)
1950
18.8 mm (0.7 in)
1951
66.8 mm (2.6 in)
1952
26.2 mm (1.0 in)
1953
34.3 mm (1.4 in)
1954
23.1 mm (0.9 in)
1955
47.0 mm (1.9 in)
1956
13.7 mm (0.5 in)
1957
27.7 mm (1.1 in)
1958
35.8 mm (1.4 in)
1959
35.6 mm (1.4 in)
1960
25.1 mm (1.0 in)
1961
20.3 mm (0.8 in)
1962
20.6 mm (0.8 in)
1963
29.7 mm (1.2 in)
1964
30.2 mm (1.2 in)
1965
35.6 mm (1.4 in)
1966
44.5 mm (1.8 in)
1967
57.9 mm (2.3 in)
1968
26.7 mm (1.1 in)
1969
24.4 mm (1.0 in)
1970
34.3 mm (1.4 in)
1971
23.4 mm (0.9 in)
1972
25.9 mm (1.0 in)
1973
25.9 mm (1.0 in)
1974
33.3 mm (1.3 in)
1975
25.4 mm (1.0 in)
1976
30.5 mm (1.2 in)
1977
20.6 mm (0.8 in)
1978
40.6 mm (1.6 in)
1979
25.4 mm (1.0 in)
1980
18.5 mm (0.7 in)
1981
17.8 mm (0.7 in)
1982
20.8 mm (0.8 in)
1983
41.4 mm (1.6 in)
1984
42.7 mm (1.7 in)
1985
29.0 mm (1.1 in)
1986
22.9 mm (0.9 in)
1987
29.2 mm (1.1 in)
1988
48.3 mm (1.9 in)
1989
34.0 mm (1.3 in)
1990
29.7 mm (1.2 in)
1991
33.3 mm (1.3 in)
1992
51.1 mm (2.0 in)
1993
58.4 mm (2.3 in)
1994
20.6 mm (0.8 in)
1995
30.7 mm (1.2 in)
1996
22.4 mm (0.9 in)
1997
21.3 mm (0.8 in)
1998
29.2 mm (1.1 in)
1999
20.8 mm (0.8 in)
2000
37.1 mm (1.5 in)
2001
27.2 mm (1.1 in)
2002
24.6 mm (1.0 in)
2003
36.1 mm (1.4 in)
2004
56.9 mm (2.2 in)
2005
41.1 mm (1.6 in)
2006
58.2 mm (2.3 in)
2007
43.2 mm (1.7 in)
2008
35.6 mm (1.4 in)
2009
21.6 mm (0.9 in)
2010
51.3 mm (2.0 in)
2011
20.1 mm (0.8 in)
2012
16.8 mm (0.7 in)
2013
43.4 mm (1.7 in)
2014
69.9 mm (2.8 in)
2015
38.1 mm (1.5 in)
2016
20.1 mm (0.8 in)
2017
19.6 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Mesa, 1896 to 2017. The record is 128.3 mm (5.1 in) in 1911, marked on the chart; the median year is 39.8 mm (1.6 in).
Wettest five days (Rx5day) at Mesa by year
Year
Wettest five days (Rx5day)
1896
49.6 mm (2.0 in)
1897
77.1 mm (3.0 in)
1898
59.4 mm (2.3 in)
1899
32.0 mm (1.3 in)
1900
58.4 mm (2.3 in)
1901
63.2 mm (2.5 in)
1902
32.0 mm (1.3 in)
1903
35.0 mm (1.4 in)
1904
35.3 mm (1.4 in)
1905
68.0 mm (2.7 in)
1906
70.6 mm (2.8 in)
1907
34.8 mm (1.4 in)
1908
47.2 mm (1.9 in)
1909
47.3 mm (1.9 in)
1910
29.5 mm (1.2 in)
1911
128.3 mm (5.1 in)
1912
38.1 mm (1.5 in)
1915
59.6 mm (2.3 in)
1916
71.9 mm (2.8 in)
1917
54.4 mm (2.1 in)
1918
34.9 mm (1.4 in)
1919
53.1 mm (2.1 in)
1920
39.1 mm (1.5 in)
1921
29.5 mm (1.2 in)
1922
31.0 mm (1.2 in)
1923
39.8 mm (1.6 in)
1924
26.4 mm (1.0 in)
1925
34.5 mm (1.4 in)
1926
49.2 mm (1.9 in)
1927
46.7 mm (1.8 in)
1928
42.4 mm (1.7 in)
1929
21.1 mm (0.8 in)
1930
39.6 mm (1.6 in)
1931
81.7 mm (3.2 in)
1932
44.9 mm (1.8 in)
1933
39.6 mm (1.6 in)
1934
35.8 mm (1.4 in)
1935
37.8 mm (1.5 in)
1936
91.4 mm (3.6 in)
1937
43.0 mm (1.7 in)
1938
33.5 mm (1.3 in)
1939
27.7 mm (1.1 in)
1940
53.1 mm (2.1 in)
1941
61.7 mm (2.4 in)
1942
33.8 mm (1.3 in)
1943
84.1 mm (3.3 in)
1944
34.1 mm (1.3 in)
1945
19.0 mm (0.7 in)
1946
66.6 mm (2.6 in)
1947
38.9 mm (1.5 in)
1948
28.4 mm (1.1 in)
1949
39.4 mm (1.6 in)
1950
21.1 mm (0.8 in)
1951
82.4 mm (3.2 in)
1952
28.7 mm (1.1 in)
1953
45.5 mm (1.8 in)
1954
27.6 mm (1.1 in)
1955
90.5 mm (3.6 in)
1956
21.8 mm (0.9 in)
1957
40.7 mm (1.6 in)
1958
48.3 mm (1.9 in)
1959
58.4 mm (2.3 in)
1960
35.5 mm (1.4 in)
1961
21.6 mm (0.9 in)
1962
35.8 mm (1.4 in)
1963
32.2 mm (1.3 in)
1964
34.0 mm (1.3 in)
1965
40.6 mm (1.6 in)
1966
64.7 mm (2.5 in)
1967
82.8 mm (3.3 in)
1968
35.1 mm (1.4 in)
1969
30.8 mm (1.2 in)
1970
45.0 mm (1.8 in)
1971
32.3 mm (1.3 in)
1972
49.6 mm (2.0 in)
1973
27.2 mm (1.1 in)
1974
57.2 mm (2.3 in)
1975
25.7 mm (1.0 in)
1976
38.4 mm (1.5 in)
1977
27.3 mm (1.1 in)
1978
52.8 mm (2.1 in)
1979
41.9 mm (1.6 in)
1980
47.0 mm (1.9 in)
1981
31.8 mm (1.3 in)
1982
36.9 mm (1.5 in)
1983
67.4 mm (2.7 in)
1984
48.5 mm (1.9 in)
1985
32.8 mm (1.3 in)
1986
39.4 mm (1.6 in)
1987
73.9 mm (2.9 in)
1988
50.6 mm (2.0 in)
1989
40.1 mm (1.6 in)
1990
38.1 mm (1.5 in)
1991
34.1 mm (1.3 in)
1992
54.7 mm (2.2 in)
1993
93.9 mm (3.7 in)
1994
31.0 mm (1.2 in)
1995
39.6 mm (1.6 in)
1996
39.7 mm (1.6 in)
1997
31.0 mm (1.2 in)
1998
37.1 mm (1.5 in)
1999
33.0 mm (1.3 in)
2000
67.1 mm (2.6 in)
2001
43.2 mm (1.7 in)
2002
31.2 mm (1.2 in)
2003
56.4 mm (2.2 in)
2004
56.9 mm (2.2 in)
2005
54.3 mm (2.1 in)
2006
63.8 mm (2.5 in)
2007
43.5 mm (1.7 in)
2008
58.7 mm (2.3 in)
2009
34.6 mm (1.4 in)
2010
85.1 mm (3.4 in)
2011
35.3 mm (1.4 in)
2012
32.7 mm (1.3 in)
2013
67.5 mm (2.7 in)
2014
77.5 mm (3.1 in)
2015
53.3 mm (2.1 in)
2016
24.4 mm (1.0 in)
2017
28.7 mm (1.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Mesa, 1896 to 2017. The record is 154 days in 1924, marked on the chart; the median year is 81 days.
Longest dry spell (CDD) at Mesa by year
Year
Longest dry spell (CDD)
1896
57 days
1897
72 days
1898
85 days
1899
118 days
1900
74 days
1901
113 days
1902
119 days
1903
68 days
1904
118 days
1905
51 days
1906
88 days
1907
56 days
1908
80 days
1909
104 days
1910
91 days
1911
88 days
1912
62 days
1915
64 days
1916
80 days
1917
102 days
1918
53 days
1919
37 days
1920
61 days
1921
61 days
1922
86 days
1923
52 days
1924
154 days
1925
54 days
1926
61 days
1927
39 days
1928
151 days
1929
83 days
1930
48 days
1931
64 days
1932
48 days
1933
51 days
1934
53 days
1935
84 days
1936
97 days
1937
101 days
1938
124 days
1939
97 days
1940
104 days
1941
75 days
1942
81 days
1943
109 days
1944
73 days
1945
117 days
1946
79 days
1947
86 days
1948
79 days
1949
49 days
1950
87 days
1951
63 days
1952
47 days
1953
133 days
1954
67 days
1955
143 days
1956
133 days
1957
65 days
1958
78 days
1959
134 days
1960
142 days
1961
94 days
1962
99 days
1963
100 days
1964
76 days
1965
41 days
1966
116 days
1967
64 days
1968
116 days
1969
71 days
1970
128 days
1971
94 days
1972
151 days
1973
94 days
1974
107 days
1975
92 days
1976
78 days
1977
76 days
1978
80 days
1979
65 days
1980
87 days
1981
55 days
1982
62 days
1983
96 days
1984
91 days
1985
64 days
1986
38 days
1987
66 days
1988
95 days
1989
56 days
1990
42 days
1991
113 days
1992
47 days
1993
79 days
1994
53 days
1995
67 days
1996
113 days
1997
96 days
1998
51 days
1999
98 days
2000
78 days
2001
37 days
2002
98 days
2003
97 days
2004
93 days
2005
74 days
2006
105 days
2007
97 days
2008
91 days
2009
92 days
2010
108 days
2011
51 days
2012
55 days
2013
97 days
2014
128 days
2015
45 days
2016
124 days
2017
61 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
75 years with a frost
Across 75 years with a frost, the median last spring frost at Mesa falls on 26 February and the median first autumn frost on 26 November, which leaves a median of 271 days between them.
In 1951 to 1987 the median growing season was 296 days. That is 38 days more than in 1897 to 1933.
Fitted over all years, the growing season changes by +5.9 days per decade at this station.
Frost dates and growing season at Mesa
Measure
Median, all years
Earliest period (1897 to 1933)
Recent period (1951 to 1987)
Recent against earliest
Fitted trend
Last spring frost
26 February
6 March
8 February
26 days earlier
-4.0 days per decade
First autumn frost
26 November
15 November
3 December
18 days later
+1.9 days per decade
Growing days
271 days
258 days
296 days
38 days more
+5.9 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
117 years, 1897 to 2016
A day with at least 30.1 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 75.0 mm (3.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Mesa: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
30.1 mm (1.2 in)
5 years
41.3 mm (1.6 in)
10 years
49.1 mm (1.9 in)
25 years
59.2 mm (2.3 in)
50 years
67.0 mm (2.6 in)
100 years
75.0 mm (3.0 in)
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 117 years of values from 1897 to 2016.
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: 70.6 mm (2.8 in) in 1906; 69.9 mm (2.8 in) in 2014; 66.8 mm (2.6 in) in 1951.
Station Changes
3 suspected
3 changes were suspected in the annual mean temperature of Mesa, at 1959, 1969 and 1981. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1959 ran 0.3 C (0.6 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1969 ran 0.2 C (0.4 F) lower than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1981 ran 0.5 C (0.8 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Mesa, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1959
+0.3
+0.6
likely
5
1969
-0.2
-0.4
possible
5
1981
-0.5
-0.8
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Mesa standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mesa 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.