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Built 2026-10-19 (19 October 2026)

Coamo 2 SW Weather Records (RQC00662723)

Record envelope, standing records and threshold days for Coamo 2 SW (RQC00662723), PR, Puerto Rico [United States], with 49 years of record.

Key Facts for Coamo 2 SW

  • Coamo 2 SW (RQC00662723) is a weather station in PR, Puerto Rico [United States] at 18.07 latitude and -66.38 longitude, 111 m (365 ft) above sea level.
  • The station reports from 1955 to 2003, 49 years of record.
  • 0 records set at Coamo 2 SW still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Coamo 2 SW set a daily record precipitation of 3.0 mm (0.12 in) on 24 December 2003.

About the Station

  • Location: PR, Puerto Rico [United States], 18.07 latitude, -66.38 longitude.
  • Elevation: 111 m (365 ft).
  • Period of record: 1955 to 2003, 49 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Coamo 2 SW, with 2026 drawn through them The band shows the record high and record low for each calendar day at Coamo 2 SW. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Coamo 2 SW. 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 Coamo 2 SW, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Which Years Hold Standing Records

0 standing records
Standing records at Coamo 2 SW by the year they were set 0 records at Coamo 2 SW still stand. 00000000000
0 records at Coamo 2 SW still stand.
Standing records at Coamo 2 SW by the year they were set
Year setStanding records

All-Time Record Progression

1 new records
When Coamo 2 SW set new all-time records 1 all-time records were set at Coamo 2 SW between 18 September 2000 and 18 September 2000. Each dot is a new record. Record daily precipitation18 September 2000: Record daily precipitation 257.6 mm (10.1 in)2000
1 all-time records were set at Coamo 2 SW between 18 September 2000 and 18 September 2000. Each dot is a new record.
When Coamo 2 SW set new all-time records
DateKindDetail
2000-09-18Record daily precipitationRecord daily precipitation 257.6 mm (10.1 in)

Wettest Day of Each Month

Sep: 257.6 mm (10.1 in)
Record daily precipitation for each month at Coamo 2 SW The wettest day on record for each calendar month at Coamo 2 SW. The most was 257.6 mm (10.1 in) on 18 September 2000. 0100200300 Jan: 49.5 mm (1.9 in), 4 January 1963 Jan Feb: 114.3 mm (4.5 in), 26 February 1995 Feb Mar: 66.5 mm (2.6 in), 27 March 1991 Mar Apr: 139.4 mm (5.5 in), 18 April 2003 Apr May: 123.2 mm (4.9 in), 24 May 1992 May Jun: 139.2 mm (5.5 in), 17 June 1956 Jun Jul: 123.2 mm (4.9 in), 19 July 1979 Jul Aug: 203.2 mm (8.0 in), 31 August 1979 Aug Sep: 257.6 mm (10.1 in), 18 September 2000 Sep Oct: 255.0 mm (10.0 in), 15 October 1962 Oct Nov: 139.7 mm (5.5 in), 9 November 1969 Nov Dec: 112.5 mm (4.4 in), 1 December 1960 Dec
The wettest day on record for each calendar month at Coamo 2 SW. The most was 257.6 mm (10.1 in) on 18 September 2000.
Record daily precipitation for each month at Coamo 2 SW
MonthRecord daily precipitation (mm)Date
Jan49.5 mm (1.9 in)4 January 1963
Feb114.3 mm (4.5 in)26 February 1995
Mar66.5 mm (2.6 in)27 March 1991
Apr139.4 mm (5.5 in)18 April 2003
May123.2 mm (4.9 in)24 May 1992
Jun139.2 mm (5.5 in)17 June 1956
Jul123.2 mm (4.9 in)19 July 1979
Aug203.2 mm (8.0 in)31 August 1979
Sep257.6 mm (10.1 in)18 September 2000
Oct255.0 mm (10.0 in)15 October 1962
Nov139.7 mm (5.5 in)9 November 1969
Dec112.5 mm (4.4 in)1 December 1960

Latest Records

20
Latest records at Coamo 2 SW
DateStationRecordValueBeat old record byOld record stoodSignificance
24 December 2003Coamo 2 SW, PRdaily rain3.0 mm (0.12 in)0.5 mm (0.02 in)32 years13 of 100 (Routine)
12 November 2003Coamo 2 SW, PRdaily rain86.6 mm (3.4 in)25.6 mm (1.0 in)32 years28 of 100 (Routine)
10 October 2003Coamo 2 SW, PRdaily rain78.2 mm (3.1 in)33.7 mm (1.3 in)10 years20 of 100 (Routine)
21 May 2003Coamo 2 SW, PRdaily rain50.8 mm (2.0 in)17.8 mm (0.7 in)8 years15 of 100 (Routine)
18 April 2003Coamo 2 SW, PRmonthly rain139.4 mm (5.5 in)57.1 mm (2.2 in)17 years59 of 100 (Notable)
11 April 2003Coamo 2 SW, PRdaily rain47.2 mm (1.9 in)34.5 mm (1.4 in)30 years37 of 100 (Notable)
19 March 2003Coamo 2 SW, PRdaily rain33.3 mm (1.3 in)19.8 mm (0.8 in)20 years28 of 100 (Routine)
20 February 2002Coamo 2 SW, PRdaily rain63.8 mm (2.5 in)60.8 mm (2.4 in)47 years58 of 100 (Notable)
4 February 2002Coamo 2 SW, PRdaily rain38.1 mm (1.5 in)27.2 mm (1.1 in)40 years35 of 100 (Notable)
18 December 2001Coamo 2 SW, PRdaily rain7.6 mm (0.30 in)0.5 mm (0.02 in)20 years10 of 100 (Routine)
28 September 2001Coamo 2 SW, PRdaily rain25.4 mm (1.0 in)5.1 mm (0.20 in)3 years6 of 100 (Routine)
23 August 2001Coamo 2 SW, PRmonthly rain (Tie)203.2 mm (8.0 in)tie21 years5 of 100 (Routine)
12 August 2001Coamo 2 SW, PRdaily rain50.8 mm (2.0 in)7.9 mm (0.31 in)12 years10 of 100 (Routine)
29 June 2001Coamo 2 SW, PRdaily rain81.3 mm (3.2 in)77.0 mm (3.0 in)7 years46 of 100 (Notable)
23 June 2001Coamo 2 SW, PRdaily rain27.9 mm (1.1 in)22.8 mm (0.9 in)3 years18 of 100 (Routine)
7 May 2001Coamo 2 SW, PRdaily rain76.2 mm (3.0 in)61.0 mm (2.4 in)0 years37 of 100 (Notable)
22 April 2001Coamo 2 SW, PRdaily rain (Tie)10.2 mm (0.4 in)tie12 years1 of 100 (Routine)
6 April 2001Coamo 2 SW, PRdaily rain22.9 mm (0.9 in)5.6 mm (0.22 in)14 years11 of 100 (Routine)
2 October 2000Coamo 2 SW, PRdaily rain (Tie)25.4 mm (1.0 in)tie42 years4 of 100 (Routine)
18 September 2000Coamo 2 SW, PRall-time rain257.6 mm (10.1 in)2.6 mm (0.10 in)37 years36 of 100 (Notable)

Extremes by Year

1955 to 2003
Yearly extremes at Coamo 2 SW: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)257.6 mm (10.1 in)200098.0 mm (3.9 in)49
Wettest five days (Rx5day)486.5 mm (19.2 in)1970148.6 mm (5.9 in)49
Longest dry spell (CDD)117 days198432 days49

Wettest day (Rx1day)

Wettest day (Rx1day) at Coamo 2 SW by year The wettest day of the year at Coamo 2 SW, 1955 to 2003. The record is 257.6 mm (10.1 in) in 2000, marked on the chart; the median year is 98.0 mm (3.9 in). 010020030019601970198019902000Record: 257.6 mm (10.1 in) in 2000
The wettest day of the year at Coamo 2 SW, 1955 to 2003. The record is 257.6 mm (10.1 in) in 2000, marked on the chart; the median year is 98.0 mm (3.9 in).
Wettest day (Rx1day) at Coamo 2 SW by year
YearWettest day (Rx1day)
195538.6 mm (1.5 in)
1956139.2 mm (5.5 in)
195742.4 mm (1.7 in)
1958117.1 mm (4.6 in)
195947.0 mm (1.9 in)
1960158.8 mm (6.3 in)
196172.4 mm (2.9 in)
1962255.0 mm (10.0 in)
196378.0 mm (3.1 in)
196450.8 mm (2.0 in)
196546.7 mm (1.8 in)
196666.8 mm (2.6 in)
196740.6 mm (1.6 in)
196853.3 mm (2.1 in)
1969139.7 mm (5.5 in)
1970175.3 mm (6.9 in)
197169.9 mm (2.8 in)
197248.3 mm (1.9 in)
1973114.3 mm (4.5 in)
1974116.8 mm (4.6 in)
1975114.3 mm (4.5 in)
197650.8 mm (2.0 in)
197774.9 mm (2.9 in)
1978115.6 mm (4.6 in)
1979203.2 mm (8.0 in)
198076.5 mm (3.0 in)
1981111.8 mm (4.4 in)
198251.8 mm (2.0 in)
198376.2 mm (3.0 in)
198468.8 mm (2.7 in)
198582.3 mm (3.2 in)
1986102.1 mm (4.0 in)
1987118.1 mm (4.6 in)
1988111.8 mm (4.4 in)
198949.0 mm (1.9 in)
199098.0 mm (3.9 in)
199166.5 mm (2.6 in)
1992123.2 mm (4.9 in)
199363.5 mm (2.5 in)
1994106.7 mm (4.2 in)
1995114.3 mm (4.5 in)
1996228.6 mm (9.0 in)
1997203.2 mm (8.0 in)
1998101.6 mm (4.0 in)
199958.4 mm (2.3 in)
2000257.6 mm (10.1 in)
2001203.2 mm (8.0 in)
200263.8 mm (2.5 in)
2003139.4 mm (5.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Coamo 2 SW by year The wettest five days of the year at Coamo 2 SW, 1955 to 2003. The record is 486.5 mm (19.2 in) in 1970, marked on the chart; the median year is 148.6 mm (5.9 in). 020040060019601970198019902000Record: 486.5 mm (19.2 in) in 1970
The wettest five days of the year at Coamo 2 SW, 1955 to 2003. The record is 486.5 mm (19.2 in) in 1970, marked on the chart; the median year is 148.6 mm (5.9 in).
Wettest five days (Rx5day) at Coamo 2 SW by year
YearWettest five days (Rx5day)
195563.5 mm (2.5 in)
1956235.5 mm (9.3 in)
1957112.0 mm (4.4 in)
1958155.2 mm (6.1 in)
195965.3 mm (2.6 in)
1960278.4 mm (11.0 in)
1961100.6 mm (4.0 in)
1962282.5 mm (11.1 in)
196398.3 mm (3.9 in)
196496.7 mm (3.8 in)
196551.8 mm (2.0 in)
196690.7 mm (3.6 in)
196780.4 mm (3.2 in)
196865.5 mm (2.6 in)
1969148.6 mm (5.9 in)
1970486.5 mm (19.2 in)
1971154.7 mm (6.1 in)
197296.5 mm (3.8 in)
1973141.0 mm (5.6 in)
1974124.4 mm (4.9 in)
1975193.1 mm (7.6 in)
1976132.1 mm (5.2 in)
197786.9 mm (3.4 in)
1978303.6 mm (12.0 in)
1979320.0 mm (12.6 in)
1980125.2 mm (4.9 in)
1981159.8 mm (6.3 in)
198251.8 mm (2.0 in)
1983174.7 mm (6.9 in)
1984230.1 mm (9.1 in)
1985158.8 mm (6.3 in)
1986226.8 mm (8.9 in)
1987254.3 mm (10.0 in)
1988133.4 mm (5.3 in)
1989113.5 mm (4.5 in)
1990136.0 mm (5.4 in)
199171.6 mm (2.8 in)
1992323.9 mm (12.8 in)
1993110.5 mm (4.4 in)
1994153.6 mm (6.0 in)
1995152.4 mm (6.0 in)
1996295.9 mm (11.6 in)
1997278.9 mm (11.0 in)
1998143.5 mm (5.6 in)
1999170.2 mm (6.7 in)
2000304.6 mm (12.0 in)
2001254.0 mm (10.0 in)
200274.0 mm (2.9 in)
2003174.5 mm (6.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Coamo 2 SW by year The longest dry spell of the year at Coamo 2 SW, 1955 to 2003. The record is 117 days in 1984, marked on the chart; the median year is 32 days. 05010015019601970198019902000Record: 117 days in 1984
The longest dry spell of the year at Coamo 2 SW, 1955 to 2003. The record is 117 days in 1984, marked on the chart; the median year is 32 days.
Longest dry spell (CDD) at Coamo 2 SW by year
YearLongest dry spell (CDD)
195547 days
195640 days
195734 days
195837 days
195929 days
196032 days
196132 days
196221 days
196347 days
196436 days
196527 days
196620 days
196741 days
196849 days
196916 days
197031 days
197120 days
197241 days
197342 days
197467 days
197552 days
197632 days
197734 days
197846 days
197960 days
198015 days
198135 days
198227 days
198333 days
1984117 days
198559 days
198655 days
198728 days
198829 days
198952 days
199030 days
199125 days
199228 days
199327 days
199425 days
199522 days
199621 days
199724 days
199821 days
199930 days
200029 days
200123 days
200234 days
200316 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.

Rainfall Return Levels

40 years, 1955 to 2001

A day with at least 91.7 mm (3.6 in) of rain is expected about once in 2 years. A day with at least 346.6 mm (13.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Coamo 2 SW: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years91.7 mm (3.6 in)
5 years144.6 mm (5.7 in)
10 years185.0 mm (7.3 in)
25 years243.3 mm (9.6 in)
50 years292.3 mm (11.5 in)Longer than the 40 years of record
100 years346.6 mm (13.6 in)Longer than the 40 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, 40 years of values from 1955 to 2001.

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: 257.6 mm (10.1 in) in 2000; 255.0 mm (10.0 in) in 1962; 228.6 mm (9.0 in) in 1996.

Download the Data

  • Data for Coamo 2 SW standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Coamo 2 SW 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).