Toa Baja 1 SSW Weather Records (RQC00669421)

Record envelope, standing records and threshold days for Toa Baja 1 SSW (RQC00669421), PR, Puerto Rico [United States], with 40 years of record.

Key Facts for Toa Baja 1 SSW

Toa Baja 1 SSW (RQC00669421) is a weather station in PR, Puerto Rico [United States] at 18.43 latitude and -66.27 longitude, 8 m (26 ft) above sea level.
The station reports from 1955 to 1994, 40 years of record.
972 records set at Toa Baja 1 SSW still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Toa Baja 1 SSW set a daily record precipitation of 15.2 mm (0.6 in) on 31 July 1994.

About the Station

Location: PR, Puerto Rico [United States], 18.43 latitude, -66.27 longitude.
Elevation: 8 m (26 ft).
Period of record: 1955 to 1994, 40 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 Toa Baja 1 SSW. 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 Toa Baja 1 SSW, 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	34.4 C (93.9 F)	15.6 C (60.1 F)	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	34.4 C (93.9 F)	17.8 C (64.0 F)	n/a	n/a
May	33.9 C (93.0 F)	20.0 C (68.0 F)	n/a	n/a
Jun	34.4 C (93.9 F)	20.0 C (68.0 F)	n/a	n/a
Jul	33.3 C (91.9 F)	21.1 C (70.0 F)	n/a	n/a
Aug	32.2 C (90.0 F)	21.1 C (70.0 F)	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	32.2 C (90.0 F)	17.8 C (64.0 F)	n/a	n/a
Dec	31.1 C (88.0 F)	17.8 C (64.0 F)	n/a	n/a

Which Years Hold Standing Records

972 standing records

972 records at Toa Baja 1 SSW still stand. 1965 holds the most, with 368.

Wettest Day of Each Month

Dec: 332.7 mm (13.1 in)

The wettest day on record for each calendar month at Toa Baja 1 SSW. The most was 332.7 mm (13.1 in) on 13 December 1981.

Record daily precipitation for each month at Toa Baja 1 SSW
Month	Record daily precipitation (mm)	Date
Jan	83.8 mm (3.3 in)	6 January 1992
Feb	173.5 mm (6.8 in)	15 February 1979
Mar	182.9 mm (7.2 in)	1 March 1969
Apr	207.0 mm (8.1 in)	23 April 1973
May	190.0 mm (7.5 in)	11 May 1988
Jun	99.1 mm (3.9 in)	21 June 1968
Jul	109.7 mm (4.3 in)	11 July 1984
Aug	135.9 mm (5.4 in)	28 August 1964
Sep	181.6 mm (7.1 in)	1 September 1979
Oct	184.9 mm (7.3 in)	7 October 1985
Nov	113.3 mm (4.5 in)	22 November 1966
Dec	332.7 mm (13.1 in)	13 December 1981

Period of Record Coverage

1956 to 1966

5 years of record at Toa Baja 1 SSW, 1956 to 1966. 5 years have data for under 90 percent of days and are left out of rankings: 1956, 1963, 1964, 1965, 1966.

Latest Records

Latest records at Toa Baja 1 SSW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 July 1994	Toa Baja 1 SSW, PR	daily rain	15.2 mm (0.6 in)	0.7 mm (0.03 in)	36 years	15 of 100 (Routine)
11 January 1994	Toa Baja 1 SSW, PR	daily rain	35.6 mm (1.4 in)	9.7 mm (0.38 in)	4 years	14 of 100 (Routine)
18 December 1993	Toa Baja 1 SSW, PR	daily rain	27.4 mm (1.1 in)	4.0 mm (0.16 in)	34 years	14 of 100 (Routine)
4 October 1993	Toa Baja 1 SSW, PR	daily rain	50.8 mm (2.0 in)	15.2 mm (0.6 in)	3 years	12 of 100 (Routine)
11 September 1993	Toa Baja 1 SSW, PR	daily rain	48.8 mm (1.9 in)	19.1 mm (0.8 in)	19 years	20 of 100 (Routine)
3 July 1993	Toa Baja 1 SSW, PR	daily rain	74.4 mm (2.9 in)	6.1 mm (0.24 in)	14 years	11 of 100 (Routine)
20 June 1993	Toa Baja 1 SSW, PR	daily rain	49.8 mm (2.0 in)	15.5 mm (0.6 in)	11 years	17 of 100 (Routine)
19 June 1993	Toa Baja 1 SSW, PR	daily rain	31.0 mm (1.2 in)	4.3 mm (0.17 in)	24 years	13 of 100 (Routine)
30 April 1993	Toa Baja 1 SSW, PR	daily rain	102.4 mm (4.0 in)	23.7 mm (0.9 in)	15 years	17 of 100 (Routine)
30 October 1992	Toa Baja 1 SSW, PR	daily rain	31.5 mm (1.2 in)	7.4 mm (0.29 in)	27 years	15 of 100 (Routine)
17 October 1992	Toa Baja 1 SSW, PR	daily rain	53.3 mm (2.1 in)	29.7 mm (1.2 in)	34 years	31 of 100 (Routine)
9 June 1992	Toa Baja 1 SSW, PR	daily rain	35.1 mm (1.4 in)	6.4 mm (0.25 in)	6 years	8 of 100 (Routine)
8 June 1992	Toa Baja 1 SSW, PR	daily rain	34.0 mm (1.3 in)	13.7 mm (0.5 in)	24 years	20 of 100 (Routine)
23 May 1992	Toa Baja 1 SSW, PR	daily rain	53.3 mm (2.1 in)	3.0 mm (0.12 in)	26 years	11 of 100 (Routine)
28 March 1992	Toa Baja 1 SSW, PR	daily rain	63.5 mm (2.5 in)	19.6 mm (0.8 in)	11 years	18 of 100 (Routine)
5 March 1992	Toa Baja 1 SSW, PR	daily rain	15.7 mm (0.6 in)	2.5 mm (0.10 in)	26 years	11 of 100 (Routine)
22 February 1992	Toa Baja 1 SSW, PR	daily rain	30.5 mm (1.2 in)	12.7 mm (0.5 in)	29 years	19 of 100 (Routine)
4 February 1992	Toa Baja 1 SSW, PR	daily rain	17.8 mm (0.7 in)	0.5 mm (0.02 in)	20 years	9 of 100 (Routine)
10 January 1992	Toa Baja 1 SSW, PR	daily rain	29.5 mm (1.2 in)	2.6 mm (0.10 in)	5 years	6 of 100 (Routine)
6 January 1992	Toa Baja 1 SSW, PR	monthly rain	83.8 mm (3.3 in)	12.7 mm (0.5 in)	13 years	30 of 100 (Routine)

Extremes by Year

1955 to 1994

Yearly extremes at Toa Baja 1 SSW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	34.4 C (93.9 F)	1963	34.4 C (93.9 F)	5
Coldest night (TNn)	15.6 C (60.1 F)	1964	17.8 C (64.0 F)	5
Wettest day (Rx1day)	332.7 mm (13.1 in)	1981	109.0 mm (4.3 in)	40
Wettest five days (Rx5day)	571.7 mm (22.5 in)	1981	152.5 mm (6.0 in)	40
Longest dry spell (CDD)	33 days	1973	19 days	40

Hottest day (TXx)

The hottest day of the year at Toa Baja 1 SSW, 1955 to 1994. The record is 34.4 C (93.9 F) in 1963, marked on the chart; the median year is 34.4 C (93.9 F).

Hottest day (TXx) at Toa Baja 1 SSW by year
Year	Hottest day (TXx)
1955	n/a
1956	33.9 C (93.0 F)
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	34.4 C (93.9 F)
1964	34.4 C (93.9 F)
1965	33.3 C (91.9 F)
1966	34.4 C (93.9 F)
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	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

Coldest night (TNn)

The coldest night of the year at Toa Baja 1 SSW, 1955 to 1994. The record is 15.6 C (60.1 F) in 1964, marked on the chart; the median year is 17.8 C (64.0 F).

Coldest night (TNn) at Toa Baja 1 SSW by year
Year	Coldest night (TNn)
1955	n/a
1956	17.8 C (64.0 F)
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	20.0 C (68.0 F)
1964	15.6 C (60.1 F)
1965	17.8 C (64.0 F)
1966	17.8 C (64.0 F)
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	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

Wettest day (Rx1day)

The wettest day of the year at Toa Baja 1 SSW, 1955 to 1994. The record is 332.7 mm (13.1 in) in 1981, marked on the chart; the median year is 109.0 mm (4.3 in).

Wettest day (Rx1day) at Toa Baja 1 SSW by year
Year	Wettest day (Rx1day)
1955	58.4 mm (2.3 in)
1956	136.9 mm (5.4 in)
1957	64.5 mm (2.5 in)
1958	94.0 mm (3.7 in)
1959	69.1 mm (2.7 in)
1960	91.4 mm (3.6 in)
1961	98.3 mm (3.9 in)
1962	129.3 mm (5.1 in)
1963	114.6 mm (4.5 in)
1964	135.9 mm (5.4 in)
1965	140.0 mm (5.5 in)
1966	153.7 mm (6.1 in)
1967	50.8 mm (2.0 in)
1968	129.0 mm (5.1 in)
1969	182.9 mm (7.2 in)
1970	168.1 mm (6.6 in)
1971	52.1 mm (2.1 in)
1972	70.1 mm (2.8 in)
1973	207.0 mm (8.1 in)
1974	115.6 mm (4.6 in)
1975	63.8 mm (2.5 in)
1976	58.4 mm (2.3 in)
1977	77.5 mm (3.1 in)
1978	81.3 mm (3.2 in)
1979	181.6 mm (7.1 in)
1980	51.3 mm (2.0 in)
1981	332.7 mm (13.1 in)
1982	112.3 mm (4.4 in)
1983	180.6 mm (7.1 in)
1984	109.7 mm (4.3 in)
1985	184.9 mm (7.3 in)
1986	71.6 mm (2.8 in)
1987	134.6 mm (5.3 in)
1988	190.0 mm (7.5 in)
1989	108.2 mm (4.3 in)
1990	131.3 mm (5.2 in)
1991	55.9 mm (2.2 in)
1992	83.8 mm (3.3 in)
1993	102.4 mm (4.0 in)
1994	35.6 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Toa Baja 1 SSW, 1955 to 1994. The record is 571.7 mm (22.5 in) in 1981, marked on the chart; the median year is 152.5 mm (6.0 in).

Wettest five days (Rx5day) at Toa Baja 1 SSW by year
Year	Wettest five days (Rx5day)
1955	80.5 mm (3.2 in)
1956	219.2 mm (8.6 in)
1957	85.4 mm (3.4 in)
1958	153.2 mm (6.0 in)
1959	108.8 mm (4.3 in)
1960	125.5 mm (4.9 in)
1961	258.3 mm (10.2 in)
1962	177.3 mm (7.0 in)
1963	138.5 mm (5.5 in)
1964	172.2 mm (6.8 in)
1965	276.6 mm (10.9 in)
1966	181.2 mm (7.1 in)
1967	79.2 mm (3.1 in)
1968	214.9 mm (8.5 in)
1969	194.6 mm (7.7 in)
1970	360.6 mm (14.2 in)
1971	78.5 mm (3.1 in)
1972	162.5 mm (6.4 in)
1973	460.3 mm (18.1 in)
1974	213.3 mm (8.4 in)
1975	151.7 mm (6.0 in)
1976	121.3 mm (4.8 in)
1977	148.8 mm (5.9 in)
1978	124.4 mm (4.9 in)
1979	243.5 mm (9.6 in)
1980	95.8 mm (3.8 in)
1981	571.7 mm (22.5 in)
1982	257.8 mm (10.1 in)
1983	318.0 mm (12.5 in)
1984	151.4 mm (6.0 in)
1985	305.8 mm (12.0 in)
1986	150.3 mm (5.9 in)
1987	314.9 mm (12.4 in)
1988	265.6 mm (10.5 in)
1989	149.1 mm (5.9 in)
1990	145.8 mm (5.7 in)
1991	120.7 mm (4.8 in)
1992	139.1 mm (5.5 in)
1993	121.7 mm (4.8 in)
1994	47.3 mm (1.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Toa Baja 1 SSW, 1955 to 1994. The record is 33 days in 1973, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Toa Baja 1 SSW by year
Year	Longest dry spell (CDD)
1955	16 days
1956	20 days
1957	28 days
1958	19 days
1959	16 days
1960	14 days
1961	13 days
1962	12 days
1963	12 days
1964	23 days
1965	23 days
1966	16 days
1967	27 days
1968	12 days
1969	16 days
1970	16 days
1971	20 days
1972	14 days
1973	33 days
1974	17 days
1975	26 days
1976	21 days
1977	26 days
1978	12 days
1979	22 days
1980	16 days
1981	19 days
1982	22 days
1983	25 days
1984	26 days
1985	21 days
1986	32 days
1987	18 days
1988	14 days
1989	16 days
1990	19 days
1991	14 days
1992	13 days
1993	19 days
1994	25 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

35 years, 1955 to 1993

A day with at least 107.0 mm (4.2 in) of rain is expected about once in 2 years. A day with at least 325.6 mm (12.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Toa Baja 1 SSW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	107.0 mm (4.2 in)
5 years	158.5 mm (6.2 in)
10 years	195.2 mm (7.7 in)
25 years	244.9 mm (9.6 in)
50 years	284.3 mm (11.2 in)	Longer than the 35 years of record
100 years	325.6 mm (12.8 in)	Longer than the 35 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, 35 years of values from 1955 to 1993.

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: 332.7 mm (13.1 in) in 1981; 207.0 mm (8.1 in) in 1973; 190.0 mm (7.5 in) in 1988.

Download the Data

Data for Toa Baja 1 SSW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Toa Baja 1 SSW 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.

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