Record envelope, standing records and threshold days for Waipahu 750 (USC00519738), Hawaii, United States, with 115 years of record.
Key Facts for Waipahu 750
Waipahu 750 (USC00519738) is a weather station in Hawaii, United States at 21.39 latitude and -158.01 longitude, 15 m (50 ft) above sea level.
The station reports from 1906 to 2020, 115 years of record.
1,464 records set at Waipahu 750 still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Waipahu 750 set a daily record precipitation of 15.0 mm (0.6 in) on 14 April 2020.
About the Station
Location: Hawaii, United States, 21.39 latitude, -158.01 longitude.
Elevation: 15 m (50 ft).
Period of record: 1906 to 2020, 115 years.
Eligible elements: 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 Waipahu 750. 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 Waipahu 750, 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)
10.6 C (51.1 F)
n/a
n/a
Feb
30.6 C (87.1 F)
12.2 C (54.0 F)
n/a
n/a
Mar
31.1 C (88.0 F)
11.7 C (53.1 F)
n/a
n/a
Apr
31.1 C (88.0 F)
11.1 C (52.0 F)
n/a
n/a
May
31.7 C (89.1 F)
14.4 C (57.9 F)
n/a
n/a
Jun
31.7 C (89.1 F)
16.1 C (61.0 F)
n/a
n/a
Jul
31.7 C (89.1 F)
15.6 C (60.1 F)
n/a
n/a
Aug
35.6 C (96.1 F)
16.1 C (61.0 F)
n/a
n/a
Sep
33.3 C (91.9 F)
16.7 C (62.1 F)
n/a
n/a
Oct
32.8 C (91.0 F)
14.4 C (57.9 F)
n/a
n/a
Nov
31.7 C (89.1 F)
13.9 C (57.0 F)
n/a
n/a
Dec
31.7 C (89.1 F)
12.2 C (54.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Waipahu 750 still stand. 1924 holds the most, with 179.
Standing records at Waipahu 750 by the year they were set
Year set
Standing records
1906
44
1907
134
1908
45
1909
60
1910
67
1911
64
1912
45
1913
55
1914
83
1915
85
1916
50
1917
52
1918
47
1919
65
1920
35
1921
39
1922
42
1923
25
1924
179
1949
11
1950
59
1951
62
1952
42
1953
37
1954
35
1977
2
Wettest Day of Each Month
Dec: 342.6 mm (13.5 in)
The wettest day on record for each calendar month at Waipahu 750. The most was 342.6 mm (13.5 in) on 23 December 1920.
Record daily precipitation for each month at Waipahu 750
Month
Record daily precipitation (mm)
Date
Jan
231.1 mm (9.1 in)
3 January 1969
Feb
176.8 mm (7.0 in)
24 February 1955
Mar
243.3 mm (9.6 in)
6 March 1958
Apr
152.4 mm (6.0 in)
21 April 1924
May
84.1 mm (3.3 in)
16 May 1913
Jun
51.1 mm (2.0 in)
3 June 1913
Jul
46.2 mm (1.8 in)
21 July 1989
Aug
70.6 mm (2.8 in)
17 August 1913
Sep
93.7 mm (3.7 in)
13 September 2018
Oct
172.7 mm (6.8 in)
31 October 1978
Nov
302.0 mm (11.9 in)
29 November 1954
Dec
342.6 mm (13.5 in)
23 December 1920
Period of Record Coverage
1906 to 1977
Complete yearUnder 90 percent of days
26 years of record at Waipahu 750, 1906 to 1977. 8 years have data for under 90 percent of days and are left out of rankings: 1906, 1919, 1923, 1924, 1949, 1953, 1954, 1977.
Cooler than the station meanWarmer than the station mean
One stripe for each of 18 complete years at Waipahu 750, 1907 to 1952. Blue stripes are years cooler than the station's own mean of 23.3 C (74.0 F); red stripes are warmer. The coolest year was 1910, at 22.8 C (73.1 F), and the warmest was 1952, at 24.0 C (75.3 F). The strongest colour marks a difference of 0.8 C (1.4 F).
Annual mean temperature at Waipahu 750 as warming stripes, 1907 to 1952
Year
Annual mean temperature
Difference from the station mean
1907
24.0 C
+0.61 C
1908
23.4 C
+0.10 C
1909
23.3 C
-0.05 C
1910
22.8 C
-0.50 C
1911
23.0 C
-0.30 C
1912
23.0 C
-0.31 C
1913
23.3 C
-0.02 C
1914
23.1 C
-0.21 C
1915
23.3 C
+0.00 C
1916
23.0 C
-0.30 C
1917
22.9 C
-0.40 C
1918
23.1 C
-0.27 C
1920
23.4 C
+0.07 C
1921
23.5 C
+0.16 C
1922
23.2 C
-0.13 C
1950
23.6 C
+0.22 C
1951
24.0 C
+0.62 C
1952
24.0 C
+0.70 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
1906 to 2020
Yearly extremes at Waipahu 750: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
35.6 C (96.1 F)
1919
32.2 C (90.0 F)
26
Coldest night (TNn)
10.6 C (51.1 F)
1915
12.8 C (55.0 F)
26
Wettest day (Rx1day)
342.6 mm (13.5 in)
1920
56.9 mm (2.2 in)
91
Wettest five days (Rx5day)
415.3 mm (16.4 in)
1920
63.2 mm (2.5 in)
89
Longest dry spell (CDD)
75 days
1953
25 days
91
Hottest day (TXx)
The hottest day of the year at Waipahu 750, 1906 to 2020. The record is 35.6 C (96.1 F) in 1919, marked on the chart; the median year is 32.2 C (90.0 F).
Hottest day (TXx) at Waipahu 750 by year
Year
Hottest day (TXx)
1906
31.7 C (89.1 F)
1907
32.2 C (90.0 F)
1908
31.7 C (89.1 F)
1909
31.7 C (89.1 F)
1910
31.1 C (88.0 F)
1911
32.2 C (90.0 F)
1912
32.8 C (91.0 F)
1913
32.2 C (90.0 F)
1914
32.2 C (90.0 F)
1915
32.2 C (90.0 F)
1916
31.1 C (88.0 F)
1917
31.7 C (89.1 F)
1918
32.2 C (90.0 F)
1919
35.6 C (96.1 F)
1920
32.2 C (90.0 F)
1921
32.2 C (90.0 F)
1922
31.7 C (89.1 F)
1923
32.2 C (90.0 F)
1924
28.9 C (84.0 F)
1949
31.7 C (89.1 F)
1950
32.2 C (90.0 F)
1951
32.8 C (91.0 F)
1952
31.7 C (89.1 F)
1953
32.2 C (90.0 F)
1954
33.3 C (91.9 F)
1955
n/a
1956
n/a
1957
n/a
1958
n/a
1959
n/a
1960
n/a
1961
n/a
1962
n/a
1963
n/a
1964
n/a
1965
n/a
1966
n/a
1967
n/a
1968
n/a
1969
n/a
1970
n/a
1971
n/a
1972
n/a
1973
n/a
1974
n/a
1975
n/a
1976
n/a
1977
29.4 C (84.9 F)
1978
n/a
1979
n/a
1980
n/a
1981
n/a
1982
n/a
1983
n/a
1984
n/a
1985
n/a
1986
n/a
1987
n/a
1988
n/a
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
2018
n/a
2019
n/a
2020
n/a
Coldest night (TNn)
The coldest night of the year at Waipahu 750, 1906 to 2020. The record is 10.6 C (51.1 F) in 1915, marked on the chart; the median year is 12.8 C (55.0 F).
Coldest night (TNn) at Waipahu 750 by year
Year
Coldest night (TNn)
1906
15.6 C (60.1 F)
1907
13.3 C (55.9 F)
1908
12.8 C (55.0 F)
1909
11.1 C (52.0 F)
1910
12.2 C (54.0 F)
1911
11.1 C (52.0 F)
1912
12.2 C (54.0 F)
1913
12.2 C (54.0 F)
1914
11.7 C (53.1 F)
1915
10.6 C (51.1 F)
1916
12.2 C (54.0 F)
1917
10.6 C (51.1 F)
1918
12.2 C (54.0 F)
1919
11.7 C (53.1 F)
1920
13.3 C (55.9 F)
1921
12.8 C (55.0 F)
1922
12.8 C (55.0 F)
1923
12.8 C (55.0 F)
1924
14.4 C (57.9 F)
1949
14.4 C (57.9 F)
1950
14.4 C (57.9 F)
1951
12.8 C (55.0 F)
1952
14.4 C (57.9 F)
1953
12.8 C (55.0 F)
1954
12.8 C (55.0 F)
1955
n/a
1956
n/a
1957
n/a
1958
n/a
1959
n/a
1960
n/a
1961
n/a
1962
n/a
1963
n/a
1964
n/a
1965
n/a
1966
n/a
1967
n/a
1968
n/a
1969
n/a
1970
n/a
1971
n/a
1972
n/a
1973
n/a
1974
n/a
1975
n/a
1976
n/a
1977
15.6 C (60.1 F)
1978
n/a
1979
n/a
1980
n/a
1981
n/a
1982
n/a
1983
n/a
1984
n/a
1985
n/a
1986
n/a
1987
n/a
1988
n/a
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
2018
n/a
2019
n/a
2020
n/a
Wettest day (Rx1day)
The wettest day of the year at Waipahu 750, 1906 to 2020. The record is 342.6 mm (13.5 in) in 1920, marked on the chart; the median year is 56.9 mm (2.2 in).
Wettest day (Rx1day) at Waipahu 750 by year
Year
Wettest day (Rx1day)
1906
80.0 mm (3.1 in)
1907
78.7 mm (3.1 in)
1908
149.9 mm (5.9 in)
1909
43.9 mm (1.7 in)
1910
36.8 mm (1.4 in)
1911
53.3 mm (2.1 in)
1912
41.9 mm (1.6 in)
1913
84.1 mm (3.3 in)
1914
81.5 mm (3.2 in)
1915
114.0 mm (4.5 in)
1916
136.7 mm (5.4 in)
1917
183.4 mm (7.2 in)
1918
80.5 mm (3.2 in)
1919
34.0 mm (1.3 in)
1920
342.6 mm (13.5 in)
1921
76.2 mm (3.0 in)
1922
44.7 mm (1.8 in)
1923
106.7 mm (4.2 in)
1924
152.4 mm (6.0 in)
1949
78.7 mm (3.1 in)
1950
102.6 mm (4.0 in)
1951
138.9 mm (5.5 in)
1952
86.9 mm (3.4 in)
1953
27.4 mm (1.1 in)
1954
302.0 mm (11.9 in)
1955
176.8 mm (7.0 in)
1956
77.0 mm (3.0 in)
1957
135.4 mm (5.3 in)
1958
243.3 mm (9.6 in)
1959
50.8 mm (2.0 in)
1960
32.8 mm (1.3 in)
1961
26.4 mm (1.0 in)
1962
50.5 mm (2.0 in)
1963
68.6 mm (2.7 in)
1964
47.0 mm (1.9 in)
1965
172.7 mm (6.8 in)
1966
52.1 mm (2.1 in)
1967
52.3 mm (2.1 in)
1968
87.4 mm (3.4 in)
1969
231.1 mm (9.1 in)
1970
26.4 mm (1.0 in)
1971
61.0 mm (2.4 in)
1972
41.9 mm (1.6 in)
1973
12.2 mm (0.5 in)
1974
60.2 mm (2.4 in)
1975
65.8 mm (2.6 in)
1976
36.3 mm (1.4 in)
1977
54.1 mm (2.1 in)
1978
172.7 mm (6.8 in)
1979
55.9 mm (2.2 in)
1980
125.0 mm (4.9 in)
1981
23.6 mm (0.9 in)
1982
82.6 mm (3.3 in)
1983
8.4 mm (0.33 in)
1984
20.6 mm (0.8 in)
1985
58.4 mm (2.3 in)
1986
100.3 mm (3.9 in)
1987
56.9 mm (2.2 in)
1988
69.3 mm (2.7 in)
1989
87.9 mm (3.5 in)
1990
31.0 mm (1.2 in)
1991
110.7 mm (4.4 in)
1992
41.9 mm (1.6 in)
1993
31.2 mm (1.2 in)
1994
58.7 mm (2.3 in)
1995
39.9 mm (1.6 in)
1996
111.8 mm (4.4 in)
1997
30.7 mm (1.2 in)
1998
27.4 mm (1.1 in)
1999
8.9 mm (0.35 in)
2000
19.1 mm (0.8 in)
2001
45.7 mm (1.8 in)
2002
45.7 mm (1.8 in)
2003
41.9 mm (1.6 in)
2004
63.0 mm (2.5 in)
2005
35.6 mm (1.4 in)
2006
45.7 mm (1.8 in)
2007
38.1 mm (1.5 in)
2008
81.3 mm (3.2 in)
2009
26.4 mm (1.0 in)
2010
61.0 mm (2.4 in)
2011
156.2 mm (6.1 in)
2012
10.2 mm (0.4 in)
2013
51.8 mm (2.0 in)
2014
37.8 mm (1.5 in)
2015
54.4 mm (2.1 in)
2016
31.2 mm (1.2 in)
2017
66.0 mm (2.6 in)
2018
93.7 mm (3.7 in)
2019
53.6 mm (2.1 in)
2020
37.8 mm (1.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Waipahu 750, 1906 to 2020. The record is 415.3 mm (16.4 in) in 1920, marked on the chart; the median year is 63.2 mm (2.5 in).
Wettest five days (Rx5day) at Waipahu 750 by year
Year
Wettest five days (Rx5day)
1906
117.7 mm (4.6 in)
1907
91.1 mm (3.6 in)
1908
182.3 mm (7.2 in)
1909
63.7 mm (2.5 in)
1910
60.9 mm (2.4 in)
1911
141.7 mm (5.6 in)
1912
73.7 mm (2.9 in)
1913
133.4 mm (5.3 in)
1914
108.5 mm (4.3 in)
1915
221.4 mm (8.7 in)
1916
257.9 mm (10.2 in)
1917
236.9 mm (9.3 in)
1918
154.2 mm (6.1 in)
1919
63.2 mm (2.5 in)
1920
415.3 mm (16.4 in)
1921
172.0 mm (6.8 in)
1922
51.3 mm (2.0 in)
1923
130.6 mm (5.1 in)
1924
171.7 mm (6.8 in)
1949
86.6 mm (3.4 in)
1950
212.1 mm (8.4 in)
1951
212.1 mm (8.4 in)
1952
104.1 mm (4.1 in)
1953
58.4 mm (2.3 in)
1954
307.6 mm (12.1 in)
1955
211.6 mm (8.3 in)
1956
111.9 mm (4.4 in)
1957
302.2 mm (11.9 in)
1958
68.5 mm (2.7 in)
1959
5.6 mm (0.22 in)
1960
76.1 mm (3.0 in)
1961
45.7 mm (1.8 in)
1962
47.3 mm (1.9 in)
1963
149.1 mm (5.9 in)
1964
48.3 mm (1.9 in)
1965
185.9 mm (7.3 in)
1966
26.4 mm (1.0 in)
1967
38.2 mm (1.5 in)
1968
34.3 mm (1.4 in)
1969
122.2 mm (4.8 in)
1970
26.9 mm (1.1 in)
1971
55.9 mm (2.2 in)
1972
83.4 mm (3.3 in)
1973
13.7 mm (0.5 in)
1974
63.2 mm (2.5 in)
1975
7.9 mm (0.31 in)
1976
37.9 mm (1.5 in)
1977
15.2 mm (0.6 in)
1978
281.5 mm (11.1 in)
1979
53.4 mm (2.1 in)
1980
43.7 mm (1.7 in)
1981
20.3 mm (0.8 in)
1982
207.6 mm (8.2 in)
1983
19.1 mm (0.8 in)
1984
18.7 mm (0.7 in)
1985
33.3 mm (1.3 in)
1986
116.3 mm (4.6 in)
1987
63.3 mm (2.5 in)
1988
65.6 mm (2.6 in)
1989
56.3 mm (2.2 in)
1990
16.6 mm (0.7 in)
1991
10.2 mm (0.4 in)
1992
26.2 mm (1.0 in)
1993
n/a
1994
3.8 mm (0.15 in)
1995
52.9 mm (2.1 in)
1996
27.4 mm (1.1 in)
1997
26.8 mm (1.1 in)
1998
8.2 mm (0.32 in)
1999
16.1 mm (0.6 in)
2000
31.8 mm (1.3 in)
2001
47.7 mm (1.9 in)
2002
61.5 mm (2.4 in)
2003
27.4 mm (1.1 in)
2004
45.7 mm (1.8 in)
2005
35.6 mm (1.4 in)
2006
45.7 mm (1.8 in)
2007
77.9 mm (3.1 in)
2008
141.0 mm (5.6 in)
2009
26.4 mm (1.0 in)
2010
32.6 mm (1.3 in)
2011
49.5 mm (1.9 in)
2012
n/a
2013
110.7 mm (4.4 in)
2014
65.3 mm (2.6 in)
2015
156.0 mm (6.1 in)
2016
57.7 mm (2.3 in)
2017
110.0 mm (4.3 in)
2018
68.8 mm (2.7 in)
2019
94.5 mm (3.7 in)
2020
15.3 mm (0.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Waipahu 750, 1906 to 2020. The record is 75 days in 1953, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Waipahu 750 by year
Year
Longest dry spell (CDD)
1906
36 days
1907
29 days
1908
35 days
1909
38 days
1910
30 days
1911
43 days
1912
42 days
1913
37 days
1914
27 days
1915
50 days
1916
41 days
1917
23 days
1918
24 days
1919
28 days
1920
26 days
1921
25 days
1922
24 days
1923
59 days
1924
29 days
1949
18 days
1950
35 days
1951
27 days
1952
58 days
1953
75 days
1954
25 days
1955
45 days
1956
23 days
1957
34 days
1958
18 days
1959
35 days
1960
32 days
1961
24 days
1962
18 days
1963
19 days
1964
30 days
1965
11 days
1966
22 days
1967
24 days
1968
23 days
1969
18 days
1970
25 days
1971
20 days
1972
24 days
1973
22 days
1974
20 days
1975
29 days
1976
19 days
1977
29 days
1978
18 days
1979
31 days
1980
17 days
1981
23 days
1982
16 days
1983
38 days
1984
25 days
1985
29 days
1986
22 days
1987
24 days
1988
31 days
1989
21 days
1990
8 days
1991
7 days
1992
5 days
1993
4 days
1994
31 days
1995
25 days
1996
32 days
1997
22 days
1998
39 days
1999
19 days
2000
20 days
2001
34 days
2002
44 days
2003
39 days
2004
19 days
2005
42 days
2006
29 days
2007
31 days
2008
36 days
2009
37 days
2010
4 days
2011
10 days
2012
4 days
2013
10 days
2014
12 days
2015
21 days
2016
21 days
2017
15 days
2018
5 days
2019
25 days
2020
12 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.
Download the Data
Data for Waipahu 750 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Waipahu 750 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.