Mayaguez AP Weather Records (RQC00666083)

Record envelope, standing records and threshold days for Mayaguez AP (RQC00666083), PR, Puerto Rico [United States], with 59 years of record.

Key Facts for Mayaguez AP

Mayaguez AP (RQC00666083) is a weather station in PR, Puerto Rico [United States] at 18.25 latitude and -67.15 longitude, 12 m (38 ft) above sea level.
The station reports from 1957 to 2015, 59 years of record.
1,464 records set at Mayaguez AP still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Mayaguez AP set a daily record precipitation of 53.1 mm (2.1 in) on 17 August 2015.

About the Station

Location: PR, Puerto Rico [United States], 18.25 latitude, -67.15 longitude.
Elevation: 12 m (38 ft).
Period of record: 1957 to 2015, 59 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Mayaguez AP. 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 Mayaguez AP, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	32.8 C (91.0 F)	11.7 C (53.1 F)	n/a	n/a
Feb	34.4 C (93.9 F)	13.9 C (57.0 F)	n/a	n/a
Mar	35.0 C (95.0 F)	13.3 C (55.9 F)	n/a	n/a
Apr	35.0 C (95.0 F)	13.3 C (55.9 F)	n/a	n/a
May	35.0 C (95.0 F)	12.2 C (54.0 F)	n/a	n/a
Jun	35.0 C (95.0 F)	14.4 C (57.9 F)	n/a	n/a
Jul	35.0 C (95.0 F)	16.1 C (61.0 F)	n/a	n/a
Aug	35.0 C (95.0 F)	15.0 C (59.0 F)	n/a	n/a
Sep	35.0 C (95.0 F)	15.0 C (59.0 F)	n/a	n/a
Oct	34.4 C (93.9 F)	13.9 C (57.0 F)	n/a	n/a
Nov	33.9 C (93.0 F)	13.3 C (55.9 F)	n/a	n/a
Dec	33.3 C (91.9 F)	12.2 C (54.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Mayaguez AP still stand. 1958 holds the most, with 264.

All-Time Record Progression

2 new records

2 all-time records were set at Mayaguez AP between 30 April 1987 and 23 September 1998. Each dot is a new record.

When Mayaguez AP set new all-time records
Date	Kind	Detail
1987-04-30	Record daily precipitation	Record daily precipitation 139.7 mm (5.5 in)
1998-09-23	Record daily precipitation	Record daily precipitation 304.8 mm (12.0 in)

Wettest Day of Each Month

Sep: 304.8 mm (12.0 in)

The wettest day on record for each calendar month at Mayaguez AP. The most was 304.8 mm (12.0 in) on 23 September 1998.

Record daily precipitation for each month at Mayaguez AP
Month	Record daily precipitation (mm)	Date
Jan	86.4 mm (3.4 in)	29 January 1993
Feb	52.1 mm (2.1 in)	2 February 1981
Mar	58.4 mm (2.3 in)	31 March 2006
Apr	139.7 mm (5.5 in)	30 April 1987
May	95.3 mm (3.8 in)	18 May 2005
Jun	117.6 mm (4.6 in)	25 June 1997
Jul	97.8 mm (3.9 in)	23 July 2002
Aug	120.7 mm (4.8 in)	26 August 2007
Sep	304.8 mm (12.0 in)	23 September 1998
Oct	101.6 mm (4.0 in)	15 October 1987
Nov	80.0 mm (3.1 in)	20 November 2007
Dec	77.2 mm (3.0 in)	3 December 1960

Period of Record Coverage

1957 to 1969

13 years of record at Mayaguez AP, 1957 to 1969. 1 years have data for under 90 percent of days and are left out of rankings: 1969.

Days with data per year at Mayaguez AP
Year	Days with data	Share of year	Complete
1957	362	99%	Yes
1958	364	100%	Yes
1959	364	100%	Yes
1960	362	99%	Yes
1961	362	99%	Yes
1962	365	100%	Yes
1963	364	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	335	92%	Yes
1967	364	100%	Yes
1968	365	100%	Yes
1969	304	83%	No

Latest Records

Latest records at Mayaguez AP
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 August 2015	Mayaguez AP, PR	daily rain	53.1 mm (2.1 in)	4.8 mm (0.19 in)	20 years	13 of 100 (Routine)
11 April 2015	Mayaguez AP, PR	daily rain	69.9 mm (2.8 in)	6.4 mm (0.25 in)	8 years	11 of 100 (Routine)
3 August 2014	Mayaguez AP, PR	daily rain	86.4 mm (3.4 in)	27.2 mm (1.1 in)	51 years	36 of 100 (Notable)
7 February 2014	Mayaguez AP, PR	daily rain	44.5 mm (1.8 in)	34.3 mm (1.4 in)	34 years	50 of 100 (Notable)
21 December 2013	Mayaguez AP, PR	daily rain	6.6 mm (0.26 in)	0.2 mm (0.01 in)	22 years	11 of 100 (Routine)
8 May 2013	Mayaguez AP, PR	daily rain	69.1 mm (2.7 in)	15.8 mm (0.6 in)	3 years	15 of 100 (Routine)
16 April 2013	Mayaguez AP, PR	daily rain	34.0 mm (1.3 in)	6.1 mm (0.24 in)	7 years	10 of 100 (Routine)
11 January 2013	Mayaguez AP, PR	daily rain	15.0 mm (0.6 in)	9.2 mm (0.36 in)	16 years	19 of 100 (Routine)
4 July 2012	Mayaguez AP, PR	daily rain	69.9 mm (2.8 in)	25.2 mm (1.0 in)	21 years	25 of 100 (Routine)
17 May 2012	Mayaguez AP, PR	daily rain	71.6 mm (2.8 in)	16.2 mm (0.6 in)	7 years	17 of 100 (Routine)
2 March 2012	Mayaguez AP, PR	daily rain	17.0 mm (0.7 in)	10.1 mm (0.4 in)	55 years	20 of 100 (Routine)
26 November 2011	Mayaguez AP, PR	daily rain	69.6 mm (2.7 in)	31.5 mm (1.2 in)	16 years	32 of 100 (Routine)
13 September 2011	Mayaguez AP, PR	daily rain	65.3 mm (2.6 in)	6.9 mm (0.27 in)	9 years	10 of 100 (Routine)
5 June 2011	Mayaguez AP, PR	daily rain	64.0 mm (2.5 in)	22.1 mm (0.9 in)	4 years	19 of 100 (Routine)
17 June 2010	Mayaguez AP, PR	daily rain	82.6 mm (3.3 in)	10.2 mm (0.4 in)	12 years	14 of 100 (Routine)
8 May 2010	Mayaguez AP, PR	daily rain	53.3 mm (2.1 in)	6.3 mm (0.25 in)	8 years	11 of 100 (Routine)
16 November 2009	Mayaguez AP, PR	daily rain	55.9 mm (2.2 in)	9.7 mm (0.38 in)	46 years	24 of 100 (Routine)
12 October 2009	Mayaguez AP, PR	daily rain	88.9 mm (3.5 in)	28.4 mm (1.1 in)	8 years	26 of 100 (Routine)
10 August 2009	Mayaguez AP, PR	daily rain	72.6 mm (2.9 in)	12.9 mm (0.5 in)	15 years	16 of 100 (Routine)
29 July 2009	Mayaguez AP, PR	daily rain	58.4 mm (2.3 in)	17.8 mm (0.7 in)	24 years	22 of 100 (Routine)

Climate Trend

10 complete years, 1958 to 1968

One stripe for each of 10 complete years at Mayaguez AP, 1958 to 1968. Blue stripes are years cooler than the station's own mean of 25.3 C (77.5 F); red stripes are warmer. The coolest year was 1961, at 24.9 C (76.8 F), and the warmest was 1958, at 26.1 C (79.0 F). The strongest colour marks a difference of 0.9 C (1.6 F).

Annual mean temperature at Mayaguez AP as warming stripes, 1958 to 1968
Year	Annual mean temperature	Difference from the station mean
1958	26.1 C	+0.82 C
1959	25.3 C	-0.02 C
1960	25.1 C	-0.20 C
1961	24.9 C	-0.37 C
1962	25.1 C	-0.20 C
1963	25.4 C	+0.10 C
1964	25.1 C	-0.16 C
1965	25.2 C	-0.12 C
1967	25.2 C	-0.04 C
1968	25.5 C	+0.24 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

1957 to 2015

Yearly extremes at Mayaguez AP: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.0 C (95.0 F)	1957	35.0 C (95.0 F)	13
Coldest night (TNn)	11.7 C (53.1 F)	1961	13.9 C (57.0 F)	13
Wettest day (Rx1day)	304.8 mm (12.0 in)	1998	71.6 mm (2.8 in)	59
Wettest five days (Rx5day)	391.2 mm (15.4 in)	1998	150.6 mm (5.9 in)	59
Longest dry spell (CDD)	68 days	1970	22 days	59

Hottest day (TXx)

The hottest day of the year at Mayaguez AP, 1957 to 2015. The record is 35.0 C (95.0 F) in 1957, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at Mayaguez AP by year
Year	Hottest day (TXx)
1957	35.0 C (95.0 F)
1958	35.0 C (95.0 F)
1959	35.0 C (95.0 F)
1960	35.0 C (95.0 F)
1961	33.9 C (93.0 F)
1962	35.0 C (95.0 F)
1963	35.0 C (95.0 F)
1964	35.0 C (95.0 F)
1965	35.0 C (95.0 F)
1966	35.0 C (95.0 F)
1967	34.4 C (93.9 F)
1968	34.4 C (93.9 F)
1969	35.0 C (95.0 F)
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
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

Coldest night (TNn)

The coldest night of the year at Mayaguez AP, 1957 to 2015. The record is 11.7 C (53.1 F) in 1961, marked on the chart; the median year is 13.9 C (57.0 F).

Coldest night (TNn) at Mayaguez AP by year
Year	Coldest night (TNn)
1957	13.3 C (55.9 F)
1958	13.9 C (57.0 F)
1959	13.3 C (55.9 F)
1960	13.3 C (55.9 F)
1961	11.7 C (53.1 F)
1962	12.2 C (54.0 F)
1963	13.9 C (57.0 F)
1964	13.9 C (57.0 F)
1965	13.3 C (55.9 F)
1966	14.4 C (57.9 F)
1967	14.4 C (57.9 F)
1968	13.9 C (57.0 F)
1969	14.4 C (57.9 F)
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
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

Wettest day (Rx1day)

The wettest day of the year at Mayaguez AP, 1957 to 2015. The record is 304.8 mm (12.0 in) in 1998, marked on the chart; the median year is 71.6 mm (2.8 in).

Wettest day (Rx1day) at Mayaguez AP by year
Year	Wettest day (Rx1day)
1957	94.5 mm (3.7 in)
1958	96.3 mm (3.8 in)
1959	71.9 mm (2.8 in)
1960	77.2 mm (3.0 in)
1961	67.1 mm (2.6 in)
1962	79.2 mm (3.1 in)
1963	80.3 mm (3.2 in)
1964	71.6 mm (2.8 in)
1965	82.8 mm (3.3 in)
1966	80.5 mm (3.2 in)
1967	100.3 mm (3.9 in)
1968	91.7 mm (3.6 in)
1969	93.2 mm (3.7 in)
1970	44.7 mm (1.8 in)
1971	74.9 mm (2.9 in)
1972	48.3 mm (1.9 in)
1973	50.8 mm (2.0 in)
1974	53.3 mm (2.1 in)
1975	53.3 mm (2.1 in)
1976	51.8 mm (2.0 in)
1977	52.1 mm (2.1 in)
1978	52.3 mm (2.1 in)
1979	53.3 mm (2.1 in)
1980	51.6 mm (2.0 in)
1981	52.1 mm (2.1 in)
1982	53.3 mm (2.1 in)
1983	52.6 mm (2.1 in)
1984	50.8 mm (2.0 in)
1985	53.3 mm (2.1 in)
1986	63.5 mm (2.5 in)
1987	139.7 mm (5.5 in)
1988	53.3 mm (2.1 in)
1989	76.2 mm (3.0 in)
1990	58.4 mm (2.3 in)
1991	53.3 mm (2.1 in)
1992	90.4 mm (3.6 in)
1993	86.4 mm (3.4 in)
1994	59.7 mm (2.4 in)
1995	75.7 mm (3.0 in)
1996	71.1 mm (2.8 in)
1997	117.6 mm (4.6 in)
1998	304.8 mm (12.0 in)
1999	69.9 mm (2.8 in)
2000	87.6 mm (3.4 in)
2001	77.5 mm (3.1 in)
2002	97.8 mm (3.9 in)
2003	67.3 mm (2.6 in)
2004	74.9 mm (2.9 in)
2005	110.5 mm (4.4 in)
2006	64.8 mm (2.6 in)
2007	120.7 mm (4.8 in)
2008	79.0 mm (3.1 in)
2009	88.9 mm (3.5 in)
2010	82.6 mm (3.3 in)
2011	69.6 mm (2.7 in)
2012	71.6 mm (2.8 in)
2013	69.1 mm (2.7 in)
2014	86.4 mm (3.4 in)
2015	69.9 mm (2.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Mayaguez AP, 1957 to 2015. The record is 391.2 mm (15.4 in) in 1998, marked on the chart; the median year is 150.6 mm (5.9 in).

Wettest five days (Rx5day) at Mayaguez AP by year
Year	Wettest five days (Rx5day)
1957	148.1 mm (5.8 in)
1958	186.0 mm (7.3 in)
1959	134.4 mm (5.3 in)
1960	120.3 mm (4.7 in)
1961	124.2 mm (4.9 in)
1962	164.1 mm (6.5 in)
1963	145.6 mm (5.7 in)
1964	120.2 mm (4.7 in)
1965	141.0 mm (5.6 in)
1966	134.9 mm (5.3 in)
1967	200.4 mm (7.9 in)
1968	237.2 mm (9.3 in)
1969	162.1 mm (6.4 in)
1970	74.7 mm (2.9 in)
1971	134.5 mm (5.3 in)
1972	109.0 mm (4.3 in)
1973	156.1 mm (6.1 in)
1974	139.0 mm (5.5 in)
1975	99.0 mm (3.9 in)
1976	108.2 mm (4.3 in)
1977	142.2 mm (5.6 in)
1978	138.7 mm (5.5 in)
1979	149.3 mm (5.9 in)
1980	111.2 mm (4.4 in)
1981	150.6 mm (5.9 in)
1982	105.4 mm (4.1 in)
1983	120.6 mm (4.7 in)
1984	158.3 mm (6.2 in)
1985	172.7 mm (6.8 in)
1986	151.5 mm (6.0 in)
1987	189.2 mm (7.4 in)
1988	128.8 mm (5.1 in)
1989	191.8 mm (7.6 in)
1990	139.7 mm (5.5 in)
1991	100.6 mm (4.0 in)
1992	177.2 mm (7.0 in)
1993	152.8 mm (6.0 in)
1994	146.1 mm (5.8 in)
1995	156.2 mm (6.1 in)
1996	112.6 mm (4.4 in)
1997	152.2 mm (6.0 in)
1998	391.2 mm (15.4 in)
1999	182.9 mm (7.2 in)
2000	231.1 mm (9.1 in)
2001	250.4 mm (9.9 in)
2002	285.5 mm (11.2 in)
2003	131.7 mm (5.2 in)
2004	218.2 mm (8.6 in)
2005	362.7 mm (14.3 in)
2006	194.3 mm (7.6 in)
2007	285.2 mm (11.2 in)
2008	252.2 mm (9.9 in)
2009	168.9 mm (6.6 in)
2010	185.5 mm (7.3 in)
2011	154.4 mm (6.1 in)
2012	118.4 mm (4.7 in)
2013	155.7 mm (6.1 in)
2014	137.4 mm (5.4 in)
2015	105.4 mm (4.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Mayaguez AP, 1957 to 2015. The record is 68 days in 1970, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Mayaguez AP by year
Year	Longest dry spell (CDD)
1957	12 days
1958	18 days
1959	20 days
1960	19 days
1961	17 days
1962	22 days
1963	9 days
1964	19 days
1965	37 days
1966	21 days
1967	17 days
1968	26 days
1969	28 days
1970	68 days
1971	15 days
1972	21 days
1973	25 days
1974	19 days
1975	16 days
1976	18 days
1977	25 days
1978	14 days
1979	19 days
1980	31 days
1981	30 days
1982	26 days
1983	39 days
1984	20 days
1985	41 days
1986	13 days
1987	20 days
1988	31 days
1989	28 days
1990	25 days
1991	31 days
1992	28 days
1993	19 days
1994	26 days
1995	29 days
1996	27 days
1997	35 days
1998	26 days
1999	50 days
2000	29 days
2001	32 days
2002	43 days
2003	35 days
2004	21 days
2005	48 days
2006	33 days
2007	22 days
2008	24 days
2009	9 days
2010	17 days
2011	4 days
2012	18 days
2013	22 days
2014	20 days
2015	20 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

45 years, 1957 to 2009

A day with at least 69.1 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 235.5 mm (9.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Mayaguez AP: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	69.1 mm (2.7 in)
5 years	93.5 mm (3.7 in)
10 years	115.7 mm (4.6 in)
25 years	153.0 mm (6.0 in)
50 years	189.6 mm (7.5 in)	Longer than the 45 years of record
100 years	235.5 mm (9.3 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 1957 to 2009.

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: 304.8 mm (12.0 in) in 1998; 139.7 mm (5.5 in) in 1987; 120.7 mm (4.8 in) in 2007.

Download the Data

Data for Mayaguez AP standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mayaguez AP 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).