San Juan Weather Records (ARM00087311)

Record envelope, standing records and threshold days for San Juan (ARM00087311), Argentina, with 53 years of record.

Key Facts for San Juan

San Juan (ARM00087311) is a weather station in Argentina at -31.57 latitude and -68.42 longitude, 597 m (1,959 ft) above sea level.
The station reports from 1973 to 2025, 53 years of record.
1,464 records set at San Juan still stand.
Records are tracked for tmin: an element needs 30 years of data to be eligible.
San Juan set a daily record low minimum temperature of -7.8 C (18.0 F) on 2 July 2025.

About the Station

Location: Argentina, -31.57 latitude, -68.42 longitude.
Elevation: 597 m (1,959 ft).
Period of record: 1973 to 2025, 53 years.
Eligible elements: tmin.

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 San Juan. 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 San Juan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	45.4 C (113.7 F)	9.0 C (48.2 F)	n/a	n/a
Feb	44.0 C (111.2 F)	5.5 C (41.9 F)	n/a	n/a
Mar	42.1 C (107.8 F)	2.0 C (35.6 F)	n/a	n/a
Apr	39.3 C (102.7 F)	-3.0 C (26.6 F)	n/a	n/a
May	35.0 C (95.0 F)	-4.1 C (24.6 F)	n/a	n/a
Jun	32.0 C (89.6 F)	-7.5 C (18.5 F)	n/a	n/a
Jul	33.4 C (92.1 F)	-9.0 C (15.8 F)	n/a	n/a
Aug	38.5 C (101.3 F)	-9.0 C (15.8 F)	n/a	n/a
Sep	39.5 C (103.1 F)	-5.0 C (23.0 F)	n/a	n/a
Oct	42.5 C (108.5 F)	0.0 C (32.0 F)	n/a	n/a
Nov	44.5 C (112.1 F)	1.0 C (33.8 F)	n/a	n/a
Dec	46.0 C (114.8 F)	6.0 C (42.8 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Juan still stand. 2013 holds the most, with 49.

Standing records at San Juan by the year they were set
Year set	Standing records
1973	24
1974	20
1975	22
1976	19
1977	21
1978	16
1979	44
1980	28
1981	23
1982	17
1983	31
1984	28
1986	1
1987	19
1988	24
1989	29
1990	25
1991	27
1992	23
1993	40
1994	19
1995	29
1996	22
1997	19
1998	22
1999	27
2000	26
2001	34
2002	30
2003	25
2004	30
2005	26
2006	22
2007	31
2008	27
2009	40
2010	27
2011	29
2012	28
2013	49
2014	48
2015	38
2016	36
2017	20
2018	35
2019	39
2020	33
2021	34
2022	30
2023	41
2024	45
2025	22

All-Time Record Progression

4 new records

4 all-time records were set at San Juan between 8 January 2006 and 2 February 2024. Each dot is a new record.

When San Juan set new all-time records
Date	Kind	Detail
2006-01-08	Record high minimum temperature	Record high minimum temperature 27.8 C (82.0 F)
2022-01-13	Record high minimum temperature	Record high minimum temperature 28.0 C (82.4 F)
2022-01-14	Record high minimum temperature	Record high minimum temperature 28.8 C (83.8 F)
2024-02-02	Record high minimum temperature	Record high minimum temperature 29.6 C (85.3 F)

Wettest Day of Each Month

Nov: 199.9 mm (7.9 in)

The wettest day on record for each calendar month at San Juan. The most was 199.9 mm (7.9 in) on 18 November 1981.

Record daily precipitation for each month at San Juan
Month	Record daily precipitation (mm)	Date
Jan	141.0 mm (5.6 in)	18 January 1992
Feb	181.1 mm (7.1 in)	16 February 1998
Mar	198.9 mm (7.8 in)	10 March 1998
Apr	182.9 mm (7.2 in)	4 April 2024
May	8.9 mm (0.35 in)	23 May 1974
Jun	70.1 mm (2.8 in)	23 June 1977
Jul	7.1 mm (0.28 in)	21 July 1977
Aug	71.9 mm (2.8 in)	22 August 1992
Sep	57.9 mm (2.3 in)	27 September 1998
Oct	106.9 mm (4.2 in)	11 October 2021
Nov	199.9 mm (7.9 in)	18 November 1981
Dec	183.9 mm (7.2 in)	2 December 2019

Period of Record Coverage

1973 to 2025

53 years of record at San Juan, 1973 to 2025. 53 years have data for under 90 percent of days and are left out of rankings: 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980 and others.

Days with data per year at San Juan
Year	Days with data	Share of year	Complete
1973	3	1%	No
1974	3	1%	No
1975	5	1%	No
1976	3	1%	No
1977	9	2%	No
1978	40	11%	No
1979	174	48%	No
1980	162	44%	No
1981	164	45%	No
1982	143	39%	No
1983	156	43%	No
1984	133	36%	No
1985	3	1%	No
1986	3	1%	No
1987	92	25%	No
1988	165	45%	No
1989	175	48%	No
1990	157	43%	No
1991	161	44%	No
1992	162	44%	No
1993	161	44%	No
1994	156	43%	No
1995	154	42%	No
1996	160	44%	No
1997	180	49%	No
1998	167	46%	No
1999	157	43%	No
2000	176	48%	No
2001	185	51%	No
2002	172	47%	No
2003	169	46%	No
2004	176	48%	No
2005	170	47%	No
2006	175	48%	No
2007	184	50%	No
2008	187	51%	No
2009	177	48%	No
2010	177	48%	No
2011	174	48%	No
2012	183	50%	No
2013	181	50%	No
2014	187	51%	No
2015	199	55%	No
2016	172	47%	No
2017	186	51%	No
2018	191	52%	No
2019	175	48%	No
2020	176	48%	No
2021	178	49%	No
2022	176	48%	No
2023	182	50%	No
2024	173	47%	No
2025	114	31%	No

Latest Records

Latest records at San Juan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
2 July 2025	San Juan, AR	daily low min	-7.8 C (18.0 F)	1.8 C (3.2 F)	28 years	18 of 100 (Routine)
1 July 2025	San Juan, AR	daily low min	-8.0 C (17.6 F)	0.9 C (1.6 F)	28 years	15 of 100 (Routine)
1 April 2025	San Juan, AR	daily low min	5.9 C (42.6 F)	1.4 C (2.5 F)	3 years	8 of 100 (Routine)
5 March 2025	San Juan, AR	daily high min	23.0 C (73.4 F)	0.4 C (0.7 F)	3 years	6 of 100 (Routine)
3 March 2025	San Juan, AR	daily high min	21.2 C (70.2 F)	0.2 C (0.4 F)	14 years	9 of 100 (Routine)
2 March 2025	San Juan, AR	daily high min	22.4 C (72.3 F)	0.4 C (0.7 F)	44 years	19 of 100 (Routine)
27 February 2025	San Juan, AR	daily high min	23.0 C (73.4 F)	0.3 C (0.5 F)	1 year	5 of 100 (Routine)
26 February 2025	San Juan, AR	daily high min	24.9 C (76.8 F)	0.1 C (0.2 F)	34 years	15 of 100 (Routine)
24 February 2025	San Juan, AR	daily high min	26.0 C (78.8 F)	2.2 C (4.0 F)	8 years	13 of 100 (Routine)
23 February 2025	San Juan, AR	daily high min	27.8 C (82.0 F)	2.3 C (4.1 F)	8 years	14 of 100 (Routine)
22 February 2025	San Juan, AR	daily high min	24.5 C (76.1 F)	1.5 C (2.7 F)	44 years	22 of 100 (Routine)
11 February 2025	San Juan, AR	daily high min (Tie)	24.0 C (75.2 F)	tie	50 years	5 of 100 (Routine)
10 February 2025	San Juan, AR	daily high min	28.0 C (82.4 F)	4.6 C (8.3 F)	15 years	23 of 100 (Routine)
8 February 2025	San Juan, AR	daily high min	29.0 C (84.2 F)	4.6 C (8.3 F)	7 years	21 of 100 (Routine)
3 February 2025	San Juan, AR	daily high min	26.0 C (78.8 F)	0.4 C (0.7 F)	1 year	6 of 100 (Routine)
22 January 2025	San Juan, AR	daily high min (Tie)	24.0 C (75.2 F)	tie	9 years	1 of 100 (Routine)
15 January 2025	San Juan, AR	daily high min	28.0 C (82.4 F)	3.8 C (6.8 F)	13 years	20 of 100 (Routine)
23 November 2024	San Juan, AR	daily high min	22.5 C (72.5 F)	1.1 C (2.0 F)	27 years	15 of 100 (Routine)
2 November 2024	San Juan, AR	daily high min	19.0 C (66.2 F)	2.0 C (3.6 F)	48 years	24 of 100 (Routine)
1 November 2024	San Juan, AR	daily high min	20.5 C (68.9 F)	3.3 C (5.9 F)	12 years	16 of 100 (Routine)

Extremes by Year

1973 to 2025

Yearly extremes at San Juan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.0 C (114.8 F)	2023	42.0 C (107.6 F)	53
Coldest night (TNn)	-9.0 C (15.8 F)	1981	-6.0 C (21.2 F)	53
Wettest day (Rx1day)	199.9 mm (7.9 in)	1981	24.9 mm (1.0 in)	53
Wettest five days (Rx5day)	222.0 mm (8.7 in)	1992	17.0 mm (0.7 in)	42
Longest dry spell (CDD)	67 days	1980	10 days	53

Hottest day (TXx)

The hottest day of the year at San Juan, 1973 to 2025. The record is 46.0 C (114.8 F) in 2023, marked on the chart; the median year is 42.0 C (107.6 F).

Hottest day (TXx) at San Juan by year
Year	Hottest day (TXx)
1973	32.0 C (89.6 F)
1974	33.0 C (91.4 F)
1975	36.0 C (96.8 F)
1976	37.0 C (98.6 F)
1977	34.0 C (93.2 F)
1978	41.0 C (105.8 F)
1979	44.0 C (111.2 F)
1980	40.0 C (104.0 F)
1981	41.0 C (105.8 F)
1982	42.7 C (108.9 F)
1983	43.6 C (110.5 F)
1984	41.6 C (106.9 F)
1985	37.5 C (99.5 F)
1986	29.7 C (85.5 F)
1987	42.0 C (107.6 F)
1988	41.9 C (107.4 F)
1989	42.2 C (108.0 F)
1990	43.5 C (110.3 F)
1991	39.5 C (103.1 F)
1992	39.6 C (103.3 F)
1993	40.4 C (104.7 F)
1994	43.0 C (109.4 F)
1995	42.0 C (107.6 F)
1996	40.7 C (105.3 F)
1997	41.5 C (106.7 F)
1998	42.6 C (108.7 F)
1999	41.0 C (105.8 F)
2000	44.6 C (112.3 F)
2001	41.5 C (106.7 F)
2002	42.3 C (108.1 F)
2003	45.4 C (113.7 F)
2004	41.7 C (107.1 F)
2005	40.9 C (105.6 F)
2006	40.2 C (104.4 F)
2007	42.0 C (107.6 F)
2008	42.6 C (108.7 F)
2009	44.5 C (112.1 F)
2010	42.5 C (108.5 F)
2011	40.5 C (104.9 F)
2012	43.3 C (109.9 F)
2013	41.5 C (106.7 F)
2014	44.6 C (112.3 F)
2015	41.0 C (105.8 F)
2016	42.0 C (107.6 F)
2017	43.3 C (109.9 F)
2018	42.0 C (107.6 F)
2019	42.0 C (107.6 F)
2020	43.0 C (109.4 F)
2021	40.4 C (104.7 F)
2022	44.9 C (112.8 F)
2023	46.0 C (114.8 F)
2024	42.7 C (108.9 F)
2025	44.0 C (111.2 F)

Coldest night (TNn)

The coldest night of the year at San Juan, 1973 to 2025. The record is -9.0 C (15.8 F) in 1981, marked on the chart; the median year is -6.0 C (21.2 F).

Coldest night (TNn) at San Juan by year
Year	Coldest night (TNn)
1973	-6.0 C (21.2 F)
1974	-6.0 C (21.2 F)
1975	-8.0 C (17.6 F)
1976	-8.0 C (17.6 F)
1977	-5.0 C (23.0 F)
1978	-6.0 C (21.2 F)
1979	-5.0 C (23.0 F)
1980	-7.0 C (19.4 F)
1981	-9.0 C (15.8 F)
1982	3.6 C (38.5 F)
1983	-3.1 C (26.4 F)
1984	-5.0 C (23.0 F)
1985	19.6 C (67.3 F)
1986	-0.4 C (31.3 F)
1987	-6.0 C (21.2 F)
1988	-7.0 C (19.4 F)
1989	-7.7 C (18.1 F)
1990	-5.3 C (22.5 F)
1991	-7.2 C (19.0 F)
1992	-6.2 C (20.8 F)
1993	-8.0 C (17.6 F)
1994	-6.8 C (19.8 F)
1995	-6.7 C (19.9 F)
1996	-7.4 C (18.7 F)
1997	-5.0 C (23.0 F)
1998	-1.8 C (28.8 F)
1999	-6.6 C (20.1 F)
2000	-6.7 C (19.9 F)
2001	-5.6 C (21.9 F)
2002	-5.5 C (22.1 F)
2003	-4.5 C (23.9 F)
2004	-4.2 C (24.4 F)
2005	-3.2 C (26.2 F)
2006	-2.4 C (27.7 F)
2007	-8.0 C (17.6 F)
2008	-5.2 C (22.6 F)
2009	-6.2 C (20.8 F)
2010	-7.9 C (17.8 F)
2011	-9.0 C (15.8 F)
2012	-6.3 C (20.7 F)
2013	-8.5 C (16.7 F)
2014	-5.3 C (22.5 F)
2015	-4.5 C (23.9 F)
2016	-4.2 C (24.4 F)
2017	-7.0 C (19.4 F)
2018	-7.0 C (19.4 F)
2019	-4.5 C (23.9 F)
2020	-6.4 C (20.5 F)
2021	-6.7 C (19.9 F)
2022	-4.6 C (23.7 F)
2023	-5.0 C (23.0 F)
2024	-7.5 C (18.5 F)
2025	-8.0 C (17.6 F)

Wettest day (Rx1day)

The wettest day of the year at San Juan, 1973 to 2025. The record is 199.9 mm (7.9 in) in 1981, marked on the chart; the median year is 24.9 mm (1.0 in).

Wettest day (Rx1day) at San Juan by year
Year	Wettest day (Rx1day)
1973	15.0 mm (0.6 in)
1974	45.0 mm (1.8 in)
1975	6.1 mm (0.24 in)
1976	0.5 mm (0.02 in)
1977	70.1 mm (2.8 in)
1978	9.9 mm (0.39 in)
1979	19.1 mm (0.8 in)
1980	53.1 mm (2.1 in)
1981	199.9 mm (7.9 in)
1982	7.1 mm (0.28 in)
1983	30.0 mm (1.2 in)
1984	14.0 mm (0.6 in)
1985	0.3 mm (0.01 in)
1986	0.0 mm (0.00 in)
1987	16.0 mm (0.6 in)
1988	71.1 mm (2.8 in)
1989	170.9 mm (6.7 in)
1990	20.1 mm (0.8 in)
1991	53.1 mm (2.1 in)
1992	181.1 mm (7.1 in)
1993	75.9 mm (3.0 in)
1994	14.0 mm (0.6 in)
1995	101.1 mm (4.0 in)
1996	5.1 mm (0.20 in)
1997	56.9 mm (2.2 in)
1998	198.9 mm (7.8 in)
1999	11.9 mm (0.5 in)
2000	56.9 mm (2.2 in)
2001	8.9 mm (0.35 in)
2002	23.9 mm (0.9 in)
2003	7.9 mm (0.31 in)
2004	39.1 mm (1.5 in)
2005	141.5 mm (5.6 in)
2006	7.1 mm (0.28 in)
2007	31.0 mm (1.2 in)
2008	125.0 mm (4.9 in)
2009	11.9 mm (0.5 in)
2010	10.9 mm (0.4 in)
2011	20.1 mm (0.8 in)
2012	9.9 mm (0.39 in)
2013	24.9 mm (1.0 in)
2014	182.9 mm (7.2 in)
2015	13.0 mm (0.5 in)
2016	25.9 mm (1.0 in)
2017	50.0 mm (2.0 in)
2018	22.1 mm (0.9 in)
2019	183.9 mm (7.2 in)
2020	22.1 mm (0.9 in)
2021	106.9 mm (4.2 in)
2022	30.0 mm (1.2 in)
2023	165.1 mm (6.5 in)
2024	182.9 mm (7.2 in)
2025	23.1 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Juan, 1973 to 2025. The record is 222.0 mm (8.7 in) in 1992, marked on the chart; the median year is 17.0 mm (0.7 in).

Wettest five days (Rx5day) at San Juan by year
Year	Wettest five days (Rx5day)
1973	20.6 mm (0.8 in)
1974	45.3 mm (1.8 in)
1975	0.0 mm (0.00 in)
1976	0.0 mm (0.00 in)
1977	18.0 mm (0.7 in)
1978	9.9 mm (0.39 in)
1979	19.1 mm (0.8 in)
1980	53.1 mm (2.1 in)
1981	199.9 mm (7.9 in)
1982	9.1 mm (0.36 in)
1983	34.1 mm (1.3 in)
1984	11.9 mm (0.5 in)
1985	0.3 mm (0.01 in)
1986	0.0 mm (0.00 in)
1987	20.1 mm (0.8 in)
1988	16.0 mm (0.6 in)
1989	0.8 mm (0.03 in)
1990	21.4 mm (0.8 in)
1991	60.2 mm (2.4 in)
1992	222.0 mm (8.7 in)
1993	76.2 mm (3.0 in)
1994	20.1 mm (0.8 in)
1995	13.9 mm (0.5 in)
1996	5.1 mm (0.20 in)
1997	56.9 mm (2.2 in)
1998	199.2 mm (7.8 in)
1999	7.1 mm (0.28 in)
2000	n/a
2001	n/a
2002	26.9 mm (1.1 in)
2003	15.8 mm (0.6 in)
2004	43.2 mm (1.7 in)
2005	86.1 mm (3.4 in)
2006	n/a
2007	13.9 mm (0.5 in)
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	8.1 mm (0.32 in)
2013	36.0 mm (1.4 in)
2014	n/a
2015	10.2 mm (0.4 in)
2016	n/a
2017	87.0 mm (3.4 in)
2018	12.2 mm (0.5 in)
2019	7.6 mm (0.30 in)
2020	16.0 mm (0.6 in)
2021	4.0 mm (0.16 in)
2022	n/a
2023	n/a
2024	18.3 mm (0.7 in)
2025	7.1 mm (0.28 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Juan, 1973 to 2025. The record is 67 days in 1980, marked on the chart; the median year is 10 days.

Longest dry spell (CDD) at San Juan by year
Year	Longest dry spell (CDD)
1973	28 days
1974	47 days
1975	13 days
1976	21 days
1977	18 days
1978	38 days
1979	35 days
1980	67 days
1981	33 days
1982	12 days
1983	13 days
1984	14 days
1985	12 days
1986	11 days
1987	10 days
1988	8 days
1989	8 days
1990	9 days
1991	12 days
1992	15 days
1993	16 days
1994	11 days
1995	9 days
1996	15 days
1997	22 days
1998	25 days
1999	11 days
2000	2 days
2001	3 days
2002	21 days
2003	17 days
2004	21 days
2005	51 days
2006	2 days
2007	2 days
2008	3 days
2009	2 days
2010	1 day
2011	2 days
2012	3 days
2013	3 days
2014	2 days
2015	4 days
2016	3 days
2017	2 days
2018	4 days
2019	2 days
2020	3 days
2021	3 days
2022	2 days
2023	2 days
2024	2 days
2025	4 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 San Juan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Juan 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 2026-10-14. Last revised 14 October 2026 (2026-10-14).