Jajome Alto Weather Records (RQC00664867)

Record envelope, standing records and threshold days for Jajome Alto (RQC00664867), PR, Puerto Rico [United States], with 72 years of record.

Key Facts for Jajome Alto

Jajome Alto (RQC00664867) is a weather station in PR, Puerto Rico [United States] at 18.07 latitude and -66.14 longitude, 719 m (2,360 ft) above sea level.
The station reports from 1955 to 2026, 72 years of record.
8 records set at Jajome Alto still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Jajome Alto set a daily record precipitation of 97.0 mm (3.8 in) on 10 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: PR, Puerto Rico [United States], 18.07 latitude, -66.14 longitude.
Elevation: 719 m (2,360 ft).
Period of record: 1955 to 2026, 72 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 Jajome Alto. 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 Jajome Alto, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	30.6 C (87.1 F)	19.4 C (66.9 F)	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

8 standing records

8 records at Jajome Alto still stand. 1975 holds the most, with 8.

Wettest Day of Each Month

Aug: 445.8 mm (17.6 in)

The wettest day on record for each calendar month at Jajome Alto. The most was 445.8 mm (17.6 in) on 27 August 1961.

Record daily precipitation for each month at Jajome Alto
Month	Record daily precipitation (mm)	Date
Jan	90.9 mm (3.6 in)	15 January 1966
Feb	93.0 mm (3.7 in)	3 February 1956
Mar	198.1 mm (7.8 in)	24 March 1967
Apr	120.4 mm (4.7 in)	24 April 1960
May	193.0 mm (7.6 in)	19 May 1985
Jun	147.3 mm (5.8 in)	17 June 1956
Jul	173.7 mm (6.8 in)	21 July 1958
Aug	445.8 mm (17.6 in)	27 August 1961
Sep	307.3 mm (12.1 in)	17 September 1975
Oct	355.6 mm (14.0 in)	7 October 1985
Nov	254.0 mm (10.0 in)	14 November 2004
Dec	116.1 mm (4.6 in)	12 December 2007

Period of Record Coverage

1975 to 1975

1 years of record at Jajome Alto, 1975 to 1975. 1 years have data for under 90 percent of days and are left out of rankings: 1975.

Latest Records

Latest records at Jajome Alto
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 September 2026	Jajome Alto, PR	daily rain (Provisional)	97.0 mm (3.8 in)	22.6 mm (0.9 in)	64 years	35 of 100 (Notable)
2 March 2026	Jajome Alto, PR	daily rain (Tie)	14.7 mm (0.6 in)	tie	67 years	6 of 100 (Routine)
15 February 2026	Jajome Alto, PR	daily rain	25.9 mm (1.0 in)	0.5 mm (0.02 in)	36 years	18 of 100 (Routine)
1 February 2026	Jajome Alto, PR	daily rain	52.1 mm (2.1 in)	22.9 mm (0.9 in)	56 years	51 of 100 (Notable)
6 January 2026	Jajome Alto, PR	daily rain	23.4 mm (0.9 in)	4.3 mm (0.17 in)	42 years	20 of 100 (Routine)
25 September 2025	Jajome Alto, PR	daily rain	71.1 mm (2.8 in)	20.3 mm (0.8 in)	12 years	18 of 100 (Routine)
2 May 2025	Jajome Alto, PR	daily rain	115.1 mm (4.5 in)	17.3 mm (0.7 in)	66 years	36 of 100 (Notable)
14 March 2025	Jajome Alto, PR	daily rain	24.4 mm (1.0 in)	1.5 mm (0.06 in)	35 years	18 of 100 (Routine)
8 March 2025	Jajome Alto, PR	daily rain	28.2 mm (1.1 in)	1.5 mm (0.06 in)	8 years	10 of 100 (Routine)
15 August 2024	Jajome Alto, PR	daily rain	149.9 mm (5.9 in)	101.6 mm (4.0 in)	46 years	60 of 100 (Major)
14 August 2024	Jajome Alto, PR	daily rain	60.5 mm (2.4 in)	10.2 mm (0.4 in)	64 years	30 of 100 (Routine)
22 April 2024	Jajome Alto, PR	daily rain	25.4 mm (1.0 in)	5.1 mm (0.20 in)	54 years	26 of 100 (Routine)
19 April 2024	Jajome Alto, PR	daily rain	94.0 mm (3.7 in)	19.1 mm (0.8 in)	66 years	40 of 100 (Notable)
4 March 2024	Jajome Alto, PR	daily rain	33.0 mm (1.3 in)	16.5 mm (0.6 in)	17 years	26 of 100 (Routine)
2 February 2024	Jajome Alto, PR	daily rain	21.6 mm (0.9 in)	1.0 mm (0.04 in)	68 years	20 of 100 (Routine)
5 October 2023	Jajome Alto, PR	daily rain	121.4 mm (4.8 in)	52.8 mm (2.1 in)	44 years	39 of 100 (Notable)
27 July 2023	Jajome Alto, PR	daily rain	27.9 mm (1.1 in)	7.6 mm (0.30 in)	45 years	23 of 100 (Routine)
25 April 2023	Jajome Alto, PR	daily rain	54.6 mm (2.1 in)	20.3 mm (0.8 in)	46 years	36 of 100 (Notable)
9 April 2023	Jajome Alto, PR	daily rain	116.8 mm (4.6 in)	99.0 mm (3.9 in)	20 years	52 of 100 (Notable)
8 April 2023	Jajome Alto, PR	daily rain (Tie)	50.8 mm (2.0 in)	tie	20 years	3 of 100 (Routine)

Extremes by Year

1955 to 2026

Yearly extremes at Jajome Alto: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	30.6 C (87.1 F)	1975	30.6 C (87.1 F)	1
Coldest night (TNn)	19.4 C (66.9 F)	1975	19.4 C (66.9 F)	1
Wettest day (Rx1day)	445.8 mm (17.6 in)	1961	118.3 mm (4.7 in)	72
Wettest five days (Rx5day)	863.7 mm (34.0 in)	1970	197.0 mm (7.8 in)	72
Longest dry spell (CDD)	34 days	1958	13 days	72

Hottest day (TXx)

The hottest day of the year at Jajome Alto, 1955 to 2026. The record is 30.6 C (87.1 F) in 1975, marked on the chart; the median year is 30.6 C (87.1 F).

Hottest day (TXx) at Jajome Alto by year
Year	Hottest day (TXx)
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	30.6 C (87.1 F)
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
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Coldest night (TNn)

The coldest night of the year at Jajome Alto, 1955 to 2026. The record is 19.4 C (66.9 F) in 1975, marked on the chart; the median year is 19.4 C (66.9 F).

Coldest night (TNn) at Jajome Alto by year
Year	Coldest night (TNn)
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	19.4 C (66.9 F)
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
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Wettest day (Rx1day)

The wettest day of the year at Jajome Alto, 1955 to 2026. The record is 445.8 mm (17.6 in) in 1961, marked on the chart; the median year is 118.3 mm (4.7 in).

Wettest day (Rx1day) at Jajome Alto by year
Year	Wettest day (Rx1day)
1955	62.7 mm (2.5 in)
1956	147.3 mm (5.8 in)
1957	105.2 mm (4.1 in)
1958	173.7 mm (6.8 in)
1959	103.1 mm (4.1 in)
1960	300.5 mm (11.8 in)
1961	445.8 mm (17.6 in)
1962	127.5 mm (5.0 in)
1963	101.6 mm (4.0 in)
1964	60.5 mm (2.4 in)
1965	138.4 mm (5.4 in)
1966	152.4 mm (6.0 in)
1967	198.1 mm (7.8 in)
1968	77.5 mm (3.1 in)
1969	163.8 mm (6.4 in)
1970	231.1 mm (9.1 in)
1971	68.6 mm (2.7 in)
1972	104.1 mm (4.1 in)
1973	106.7 mm (4.2 in)
1974	89.4 mm (3.5 in)
1975	307.3 mm (12.1 in)
1976	53.3 mm (2.1 in)
1977	127.0 mm (5.0 in)
1978	71.1 mm (2.8 in)
1979	304.8 mm (12.0 in)
1980	68.6 mm (2.7 in)
1981	158.8 mm (6.3 in)
1982	73.7 mm (2.9 in)
1983	109.2 mm (4.3 in)
1984	210.8 mm (8.3 in)
1985	355.6 mm (14.0 in)
1986	124.5 mm (4.9 in)
1987	162.6 mm (6.4 in)
1988	124.5 mm (4.9 in)
1989	160.5 mm (6.3 in)
1990	94.0 mm (3.7 in)
1991	50.8 mm (2.0 in)
1992	61.0 mm (2.4 in)
1993	106.7 mm (4.2 in)
1994	152.4 mm (6.0 in)
1995	51.3 mm (2.0 in)
1996	58.4 mm (2.3 in)
1997	50.8 mm (2.0 in)
1998	190.0 mm (7.5 in)
1999	108.7 mm (4.3 in)
2000	160.0 mm (6.3 in)
2001	71.9 mm (2.8 in)
2002	71.9 mm (2.8 in)
2003	153.2 mm (6.0 in)
2004	254.0 mm (10.0 in)
2005	190.5 mm (7.5 in)
2006	81.3 mm (3.2 in)
2007	158.8 mm (6.3 in)
2008	194.3 mm (7.6 in)
2009	129.3 mm (5.1 in)
2010	281.9 mm (11.1 in)
2011	106.7 mm (4.2 in)
2012	92.2 mm (3.6 in)
2013	84.3 mm (3.3 in)
2014	152.4 mm (6.0 in)
2015	80.3 mm (3.2 in)
2016	130.0 mm (5.1 in)
2017	219.5 mm (8.6 in)
2018	92.2 mm (3.6 in)
2019	60.5 mm (2.4 in)
2020	121.9 mm (4.8 in)
2021	85.9 mm (3.4 in)
2022	101.6 mm (4.0 in)
2023	121.4 mm (4.8 in)
2024	149.9 mm (5.9 in)
2025	115.1 mm (4.5 in)
2026	97.0 mm (3.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Jajome Alto, 1955 to 2026. The record is 863.7 mm (34.0 in) in 1970, marked on the chart; the median year is 197.0 mm (7.8 in).

Wettest five days (Rx5day) at Jajome Alto by year
Year	Wettest five days (Rx5day)
1955	97.3 mm (3.8 in)
1956	260.6 mm (10.3 in)
1957	141.0 mm (5.6 in)
1958	270.0 mm (10.6 in)
1959	184.6 mm (7.3 in)
1960	339.9 mm (13.4 in)
1961	515.1 mm (20.3 in)
1962	199.7 mm (7.9 in)
1963	141.5 mm (5.6 in)
1964	92.5 mm (3.6 in)
1965	230.7 mm (9.1 in)
1966	250.7 mm (9.9 in)
1967	208.2 mm (8.2 in)
1968	140.5 mm (5.5 in)
1969	194.3 mm (7.6 in)
1970	863.7 mm (34.0 in)
1971	138.2 mm (5.4 in)
1972	132.3 mm (5.2 in)
1973	156.9 mm (6.2 in)
1974	183.8 mm (7.2 in)
1975	380.5 mm (15.0 in)
1976	125.7 mm (4.9 in)
1977	262.6 mm (10.3 in)
1978	300.9 mm (11.8 in)
1979	466.8 mm (18.4 in)
1980	109.9 mm (4.3 in)
1981	230.7 mm (9.1 in)
1982	161.6 mm (6.4 in)
1983	217.2 mm (8.6 in)
1984	502.9 mm (19.8 in)
1985	533.9 mm (21.0 in)
1986	215.2 mm (8.5 in)
1987	323.9 mm (12.8 in)
1988	255.5 mm (10.1 in)
1989	276.4 mm (10.9 in)
1990	188.9 mm (7.4 in)
1991	87.3 mm (3.4 in)
1992	125.9 mm (5.0 in)
1993	183.1 mm (7.2 in)
1994	189.2 mm (7.4 in)
1995	121.4 mm (4.8 in)
1996	133.4 mm (5.3 in)
1997	154.1 mm (6.1 in)
1998	288.8 mm (11.4 in)
1999	210.4 mm (8.3 in)
2000	220.0 mm (8.7 in)
2001	118.9 mm (4.7 in)
2002	118.8 mm (4.7 in)
2003	447.2 mm (17.6 in)
2004	627.6 mm (24.7 in)
2005	236.2 mm (9.3 in)
2006	163.1 mm (6.4 in)
2007	401.4 mm (15.8 in)
2008	394.4 mm (15.5 in)
2009	173.2 mm (6.8 in)
2010	515.2 mm (20.3 in)
2011	206.6 mm (8.1 in)
2012	182.8 mm (7.2 in)
2013	167.5 mm (6.6 in)
2014	265.8 mm (10.5 in)
2015	135.0 mm (5.3 in)
2016	190.5 mm (7.5 in)
2017	408.5 mm (16.1 in)
2018	164.8 mm (6.5 in)
2019	116.4 mm (4.6 in)
2020	277.4 mm (10.9 in)
2021	115.2 mm (4.5 in)
2022	293.4 mm (11.6 in)
2023	194.2 mm (7.6 in)
2024	247.4 mm (9.7 in)
2025	142.4 mm (5.6 in)
2026	122.2 mm (4.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Jajome Alto, 1955 to 2026. The record is 34 days in 1958, marked on the chart; the median year is 13 days.

Longest dry spell (CDD) at Jajome Alto by year
Year	Longest dry spell (CDD)
1955	22 days
1956	19 days
1957	16 days
1958	34 days
1959	10 days
1960	13 days
1961	16 days
1962	12 days
1963	9 days
1964	17 days
1965	9 days
1966	21 days
1967	15 days
1968	23 days
1969	17 days
1970	12 days
1971	11 days
1972	16 days
1973	17 days
1974	12 days
1975	20 days
1976	26 days
1977	21 days
1978	14 days
1979	12 days
1980	22 days
1981	10 days
1982	10 days
1983	13 days
1984	14 days
1985	20 days
1986	13 days
1987	11 days
1988	22 days
1989	19 days
1990	10 days
1991	16 days
1992	12 days
1993	15 days
1994	16 days
1995	18 days
1996	11 days
1997	21 days
1998	10 days
1999	21 days
2000	8 days
2001	16 days
2002	11 days
2003	10 days
2004	11 days
2005	26 days
2006	14 days
2007	16 days
2008	8 days
2009	12 days
2010	19 days
2011	8 days
2012	17 days
2013	12 days
2014	16 days
2015	10 days
2016	10 days
2017	13 days
2018	12 days
2019	7 days
2020	11 days
2021	13 days
2022	11 days
2023	9 days
2024	10 days
2025	8 days
2026	10 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

68 years, 1955 to 2025

A day with at least 119.8 mm (4.7 in) of rain is expected about once in 2 years. A day with at least 446.3 mm (17.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Jajome Alto: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	119.8 mm (4.7 in)
5 years	184.6 mm (7.3 in)
10 years	235.3 mm (9.3 in)
25 years	309.9 mm (12.2 in)
50 years	374.1 mm (14.7 in)
100 years	446.3 mm (17.6 in)	Longer than the 68 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, 68 years of values from 1955 to 2025.

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: 445.8 mm (17.6 in) in 1961; 355.6 mm (14.0 in) in 1985; 307.3 mm (12.1 in) in 1975.

Download the Data

Data for Jajome Alto standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Jajome Alto 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).