Record envelope, standing records and threshold days for Coconut Is 840.1 (USC00510350), Hawaii, United States, with 64 years of record.
Key Facts for Coconut Is 840.1
Coconut Is 840.1 (USC00510350) is a weather station in Hawaii, United States at 21.43 latitude and -157.79 longitude, 1 m (3 ft) above sea level.
The station reports from 1957 to 2020, 64 years of record.
1,464 records set at Coconut Is 840.1 still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Coconut Is 840.1 set a daily record precipitation of 26.2 mm (1.0 in) on 8 October 2019.
About the Station
Location: Hawaii, United States, 21.43 latitude, -157.79 longitude.
Elevation: 1 m (3 ft).
Period of record: 1957 to 2020, 64 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 Coconut Is 840.1. 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 Coconut Is 840.1, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
31.1 C (88.0 F)
12.2 C (54.0 F)
n/a
n/a
Feb
31.1 C (88.0 F)
13.3 C (55.9 F)
n/a
n/a
Mar
31.7 C (89.1 F)
12.2 C (54.0 F)
n/a
n/a
Apr
31.7 C (89.1 F)
14.4 C (57.9 F)
n/a
n/a
May
31.7 C (89.1 F)
16.1 C (61.0 F)
n/a
n/a
Jun
32.2 C (90.0 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
32.8 C (91.0 F)
14.4 C (57.9 F)
n/a
n/a
Sep
33.3 C (91.9 F)
17.2 C (63.0 F)
n/a
n/a
Oct
33.3 C (91.9 F)
12.2 C (54.0 F)
n/a
n/a
Nov
31.7 C (89.1 F)
12.2 C (54.0 F)
n/a
n/a
Dec
30.6 C (87.1 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 Coconut Is 840.1 still stand. 1958 holds the most, with 264.
Standing records at Coconut Is 840.1 by the year they were set
Year set
Standing records
1957
246
1958
264
1959
251
1960
205
1961
230
1962
189
1963
76
1977
3
Wettest Day of Each Month
Mar: 175.8 mm (6.9 in)
The wettest day on record for each calendar month at Coconut Is 840.1. The most was 175.8 mm (6.9 in) on 20 March 1991.
Record daily precipitation for each month at Coconut Is 840.1
Month
Record daily precipitation (mm)
Date
Jan
172.7 mm (6.8 in)
12 January 1975
Feb
150.6 mm (5.9 in)
2 February 1969
Mar
175.8 mm (6.9 in)
20 March 1991
Apr
161.3 mm (6.4 in)
15 April 1972
May
106.7 mm (4.2 in)
16 May 1974
Jun
60.5 mm (2.4 in)
17 June 1982
Jul
51.6 mm (2.0 in)
21 July 1989
Aug
88.1 mm (3.5 in)
3 August 2004
Sep
78.0 mm (3.1 in)
2 September 1968
Oct
146.8 mm (5.8 in)
31 October 1978
Nov
158.5 mm (6.2 in)
13 November 1965
Dec
147.8 mm (5.8 in)
18 December 1967
Period of Record Coverage
1957 to 1977
Complete yearUnder 90 percent of days
8 years of record at Coconut Is 840.1, 1957 to 1977. 3 years have data for under 90 percent of days and are left out of rankings: 1957, 1963, 1977.
Yearly extremes at Coconut Is 840.1: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
33.3 C (91.9 F)
1960
32.2 C (90.0 F)
8
Coldest night (TNn)
12.2 C (54.0 F)
1959
13.4 C (56.0 F)
8
Wettest day (Rx1day)
175.8 mm (6.9 in)
1991
84.6 mm (3.3 in)
64
Wettest five days (Rx5day)
570.0 mm (22.4 in)
1965
95.9 mm (3.8 in)
62
Longest dry spell (CDD)
42 days
2008
12 days
64
Hottest day (TXx)
The hottest day of the year at Coconut Is 840.1, 1957 to 2020. The record is 33.3 C (91.9 F) in 1960, marked on the chart; the median year is 32.2 C (90.0 F).
Hottest day (TXx) at Coconut Is 840.1 by year
Year
Hottest day (TXx)
1957
32.2 C (90.0 F)
1958
32.2 C (90.0 F)
1959
32.8 C (91.0 F)
1960
33.3 C (91.9 F)
1961
33.3 C (91.9 F)
1962
31.1 C (88.0 F)
1963
31.7 C (89.1 F)
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
27.2 C (81.0 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 Coconut Is 840.1, 1957 to 2020. The record is 12.2 C (54.0 F) in 1959, marked on the chart; the median year is 13.4 C (56.0 F).
Coldest night (TNn) at Coconut Is 840.1 by year
Year
Coldest night (TNn)
1957
15.6 C (60.1 F)
1958
13.9 C (57.0 F)
1959
12.2 C (54.0 F)
1960
12.8 C (55.0 F)
1961
14.4 C (57.9 F)
1962
12.2 C (54.0 F)
1963
12.2 C (54.0 F)
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
18.3 C (64.9 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
Wettest day (Rx1day)
The wettest day of the year at Coconut Is 840.1, 1957 to 2020. The record is 175.8 mm (6.9 in) in 1991, marked on the chart; the median year is 84.6 mm (3.3 in).
Wettest day (Rx1day) at Coconut Is 840.1 by year
Year
Wettest day (Rx1day)
1957
55.9 mm (2.2 in)
1958
143.5 mm (5.6 in)
1959
87.4 mm (3.4 in)
1960
51.6 mm (2.0 in)
1961
72.1 mm (2.8 in)
1962
48.3 mm (1.9 in)
1963
98.6 mm (3.9 in)
1964
95.0 mm (3.7 in)
1965
158.5 mm (6.2 in)
1966
146.3 mm (5.8 in)
1967
147.8 mm (5.8 in)
1968
134.1 mm (5.3 in)
1969
150.6 mm (5.9 in)
1970
104.6 mm (4.1 in)
1971
61.5 mm (2.4 in)
1972
161.3 mm (6.4 in)
1973
102.9 mm (4.1 in)
1974
106.7 mm (4.2 in)
1975
172.7 mm (6.8 in)
1976
70.6 mm (2.8 in)
1977
48.8 mm (1.9 in)
1978
146.8 mm (5.8 in)
1979
59.7 mm (2.4 in)
1980
149.9 mm (5.9 in)
1981
49.5 mm (1.9 in)
1982
72.1 mm (2.8 in)
1983
25.7 mm (1.0 in)
1984
117.3 mm (4.6 in)
1985
72.9 mm (2.9 in)
1986
131.6 mm (5.2 in)
1987
30.5 mm (1.2 in)
1988
125.0 mm (4.9 in)
1989
102.1 mm (4.0 in)
1990
52.6 mm (2.1 in)
1991
175.8 mm (6.9 in)
1992
44.2 mm (1.7 in)
1993
74.2 mm (2.9 in)
1994
84.1 mm (3.3 in)
1995
73.4 mm (2.9 in)
1996
140.0 mm (5.5 in)
1997
38.6 mm (1.5 in)
1998
26.9 mm (1.1 in)
1999
130.6 mm (5.1 in)
2000
34.5 mm (1.4 in)
2001
95.5 mm (3.8 in)
2002
75.9 mm (3.0 in)
2003
61.0 mm (2.4 in)
2004
88.1 mm (3.5 in)
2005
74.2 mm (2.9 in)
2006
58.7 mm (2.3 in)
2007
141.5 mm (5.6 in)
2008
146.1 mm (5.8 in)
2009
88.4 mm (3.5 in)
2010
55.9 mm (2.2 in)
2011
101.6 mm (4.0 in)
2012
17.5 mm (0.7 in)
2013
60.7 mm (2.4 in)
2014
94.2 mm (3.7 in)
2015
76.2 mm (3.0 in)
2016
85.1 mm (3.4 in)
2017
46.2 mm (1.8 in)
2018
94.7 mm (3.7 in)
2019
55.6 mm (2.2 in)
2020
25.4 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Coconut Is 840.1, 1957 to 2020. The record is 570.0 mm (22.4 in) in 1965, marked on the chart; the median year is 95.9 mm (3.8 in).
Wettest five days (Rx5day) at Coconut Is 840.1 by year
Year
Wettest five days (Rx5day)
1957
132.7 mm (5.2 in)
1958
167.5 mm (6.6 in)
1959
102.9 mm (4.1 in)
1960
119.2 mm (4.7 in)
1961
118.6 mm (4.7 in)
1962
95.3 mm (3.8 in)
1963
180.9 mm (7.1 in)
1964
163.9 mm (6.5 in)
1965
570.0 mm (22.4 in)
1966
306.9 mm (12.1 in)
1967
162.4 mm (6.4 in)
1968
206.0 mm (8.1 in)
1969
303.0 mm (11.9 in)
1970
220.7 mm (8.7 in)
1971
143.3 mm (5.6 in)
1972
192.1 mm (7.6 in)
1973
136.6 mm (5.4 in)
1974
136.7 mm (5.4 in)
1975
230.7 mm (9.1 in)
1976
174.0 mm (6.9 in)
1977
8.4 mm (0.33 in)
1978
16.3 mm (0.6 in)
1979
113.8 mm (4.5 in)
1980
387.5 mm (15.3 in)
1981
56.9 mm (2.2 in)
1982
85.6 mm (3.4 in)
1983
42.3 mm (1.7 in)
1984
14.8 mm (0.6 in)
1985
40.6 mm (1.6 in)
1986
16.0 mm (0.6 in)
1987
5.3 mm (0.21 in)
1988
134.2 mm (5.3 in)
1989
27.8 mm (1.1 in)
1990
10.2 mm (0.4 in)
1991
253.8 mm (10.0 in)
1992
36.9 mm (1.5 in)
1993
25.2 mm (1.0 in)
1994
18.8 mm (0.7 in)
1995
19.1 mm (0.8 in)
1996
44.6 mm (1.8 in)
1997
72.7 mm (2.9 in)
1998
12.5 mm (0.5 in)
1999
48.7 mm (1.9 in)
2000
8.1 mm (0.32 in)
2001
43.9 mm (1.7 in)
2002
14.3 mm (0.6 in)
2003
81.4 mm (3.2 in)
2004
53.1 mm (2.1 in)
2005
77.2 mm (3.0 in)
2006
83.3 mm (3.3 in)
2007
142.8 mm (5.6 in)
2008
8.8 mm (0.35 in)
2009
107.9 mm (4.2 in)
2010
58.4 mm (2.3 in)
2011
163.1 mm (6.4 in)
2012
34.2 mm (1.3 in)
2013
96.5 mm (3.8 in)
2014
103.9 mm (4.1 in)
2015
118.6 mm (4.7 in)
2016
111.5 mm (4.4 in)
2017
64.3 mm (2.5 in)
2018
170.9 mm (6.7 in)
2019
n/a
2020
n/a
Longest dry spell (CDD)
The longest dry spell of the year at Coconut Is 840.1, 1957 to 2020. The record is 42 days in 2008, marked on the chart; the median year is 12 days.
Longest dry spell (CDD) at Coconut Is 840.1 by year
Year
Longest dry spell (CDD)
1957
16 days
1958
12 days
1959
15 days
1960
12 days
1961
12 days
1962
12 days
1963
10 days
1964
17 days
1965
10 days
1966
25 days
1967
20 days
1968
13 days
1969
12 days
1970
21 days
1971
17 days
1972
20 days
1973
12 days
1974
10 days
1975
13 days
1976
13 days
1977
8 days
1978
8 days
1979
11 days
1980
7 days
1981
7 days
1982
6 days
1983
10 days
1984
18 days
1985
21 days
1986
10 days
1987
19 days
1988
7 days
1989
22 days
1990
11 days
1991
9 days
1992
8 days
1993
10 days
1994
10 days
1995
8 days
1996
11 days
1997
11 days
1998
18 days
1999
11 days
2000
22 days
2001
15 days
2002
11 days
2003
21 days
2004
24 days
2005
24 days
2006
21 days
2007
17 days
2008
42 days
2009
10 days
2010
13 days
2011
12 days
2012
4 days
2013
14 days
2014
10 days
2015
18 days
2016
14 days
2017
14 days
2018
17 days
2019
4 days
2020
3 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 Coconut Is 840.1 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Coconut Is 840.1 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.