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San Juan L M Marin Intl AP Weather Records (RQW00011641)

Record envelope, standing records and threshold days for San Juan L M Marin Intl AP (RQW00011641), PR, Puerto Rico [United States], with 71 years of record.

Key Facts for San Juan L M Marin Intl AP

  • San Juan L M Marin Intl AP (RQW00011641) is a weather station in PR, Puerto Rico [United States] at 18.43 latitude and -66.01 longitude, 3 m (10 ft) above sea level.
  • The station reports from 1956 to 2026, 71 years of record.
  • 1,464 records set at San Juan L M Marin Intl AP still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • San Juan L M Marin Intl AP set a daily record precipitation of 47.5 mm (1.9 in) on 4 October 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], 18.43 latitude, -66.01 longitude.
  • Elevation: 3 m (10 ft).
  • Period of record: 1956 to 2026, 71 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

7 days at or beyond a record
Daily record high and record low at San Juan L M Marin Intl AP, with 2026 drawn through them The band shows the record high and record low for each calendar day at San Juan L M Marin Intl AP. The lines show the 2026 daily maximum and minimum. 7 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 152025303540 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at San Juan L M Marin Intl AP. The lines show the 2026 daily maximum and minimum. 7 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at San Juan L M Marin Intl AP, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan33.3 C (91.9 F)16.1 C (61.0 F)31.1 C (88.0 F)21.1 C (70.0 F)
Feb35.6 C (96.1 F)16.7 C (62.1 F)31.1 C (88.0 F)21.1 C (70.0 F)
Mar35.6 C (96.1 F)15.6 C (60.1 F)31.7 C (89.1 F)21.1 C (70.0 F)
Apr36.1 C (97.0 F)17.8 C (64.0 F)33.3 C (91.9 F)22.2 C (72.0 F)
May35.6 C (96.1 F)18.9 C (66.0 F)33.3 C (91.9 F)23.3 C (73.9 F)
Jun36.1 C (97.0 F)20.6 C (69.1 F)34.4 C (93.9 F)24.4 C (75.9 F)
Jul35.0 C (95.0 F)20.6 C (69.1 F)34.4 C (93.9 F)25.0 C (77.0 F)
Aug36.1 C (97.0 F)21.1 C (70.0 F)34.4 C (93.9 F)25.0 C (77.0 F)
Sep36.1 C (97.0 F)20.6 C (69.1 F)35.0 C (95.0 F)23.9 C (75.0 F)
Oct36.7 C (98.1 F)19.4 C (66.9 F)33.3 C (91.9 F)24.4 C (75.9 F)
Nov35.6 C (96.1 F)18.9 C (66.0 F)n/an/a
Dec34.4 C (93.9 F)17.2 C (63.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at San Juan L M Marin Intl AP by the year they were set 1,464 records at San Juan L M Marin Intl AP still stand. 1956 holds the most, with 102. 0501001501956: 1021957: 741958: 381959: 441960: 411961: 511962: 471963: 211964: 231965: 231966: 211967: 161968: 241969: 181970: 191971: 71972: 131973: 191974: 151975: 111976: 41977: 111978: 171979: 251980: 511981: 491982: 131983: 651984: 291985: 131986: 101987: 211988: 101989: 131990: 71991: 81992: 71993: 191994: 71995: 301996: 81997: 81998: 81999: 52000: 82001: 62002: 32003: 62004: 72005: 202006: 42007: 62008: 72009: 122010: 302011: 72012: 132013: 162014: 212015: 102016: 92017: 162018: 62019: 132020: 182021: 152022: 82023: 462024: 732025: 162026: 3195619641972198019881996200420122020
1,464 records at San Juan L M Marin Intl AP still stand. 1956 holds the most, with 102.
Standing records at San Juan L M Marin Intl AP by the year they were set
Year setStanding records
1956102
195774
195838
195944
196041
196151
196247
196321
196423
196523
196621
196716
196824
196918
197019
19717
197213
197319
197415
197511
19764
197711
197817
197925
198051
198149
198213
198365
198429
198513
198610
198721
198810
198913
19907
19918
19927
199319
19947
199530
19968
19978
19988
19995
20008
20016
20023
20036
20047
200520
20064
20076
20087
200912
201030
20117
201213
201316
201421
201510
20169
201716
20186
201913
202018
202115
20228
202346
202473
202516
20263

All-Time Record Progression

4 new records
When San Juan L M Marin Intl AP set new all-time records 4 all-time records were set at San Juan L M Marin Intl AP between 15 April 1988 and 18 July 2013. Each dot is a new record. Record daily precipitationRecord low maximum temperature15 April 1988: Record daily precipitation 180.3 mm (7.1 in)18 September 1989: Record daily precipitation 224.5 mm (8.8 in)18 January 2000: Record low maximum temperature 22.8 C (73.0 F)18 July 2013: Record daily precipitation 234.4 mm (9.2 in)19901995200020052010
4 all-time records were set at San Juan L M Marin Intl AP between 15 April 1988 and 18 July 2013. Each dot is a new record.
When San Juan L M Marin Intl AP set new all-time records
DateKindDetail
1988-04-15Record daily precipitationRecord daily precipitation 180.3 mm (7.1 in)
1989-09-18Record daily precipitationRecord daily precipitation 224.5 mm (8.8 in)
2000-01-18Record low maximum temperatureRecord low maximum temperature 22.8 C (73.0 F)
2013-07-18Record daily precipitationRecord daily precipitation 234.4 mm (9.2 in)

Wettest Day of Each Month

Jul: 234.4 mm (9.2 in)
Record daily precipitation for each month at San Juan L M Marin Intl AP The wettest day on record for each calendar month at San Juan L M Marin Intl AP. The most was 234.4 mm (9.2 in) on 18 July 2013. 0100200300 Jan: 126.5 mm (5.0 in), 26 January 1969 Jan Feb: 110.5 mm (4.4 in), 24 February 2020 Feb Mar: 79.2 mm (3.1 in), 9 March 1973 Mar Apr: 180.3 mm (7.1 in), 15 April 1988 Apr May: 114.6 mm (4.5 in), 13 May 1986 May Jun: 90.2 mm (3.6 in), 15 June 1965 Jun Jul: 234.4 mm (9.2 in), 18 July 2013 Jul Aug: 146.3 mm (5.8 in), 22 August 2011 Aug Sep: 224.5 mm (8.8 in), 18 September 1989 Sep Oct: 132.1 mm (5.2 in), 27 October 2023 Oct Nov: 179.6 mm (7.1 in), 25 November 1979 Nov Dec: 176.8 mm (7.0 in), 12 December 1981 Dec
The wettest day on record for each calendar month at San Juan L M Marin Intl AP. The most was 234.4 mm (9.2 in) on 18 July 2013.
Record daily precipitation for each month at San Juan L M Marin Intl AP
MonthRecord daily precipitation (mm)Date
Jan126.5 mm (5.0 in)26 January 1969
Feb110.5 mm (4.4 in)24 February 2020
Mar79.2 mm (3.1 in)9 March 1973
Apr180.3 mm (7.1 in)15 April 1988
May114.6 mm (4.5 in)13 May 1986
Jun90.2 mm (3.6 in)15 June 1965
Jul234.4 mm (9.2 in)18 July 2013
Aug146.3 mm (5.8 in)22 August 2011
Sep224.5 mm (8.8 in)18 September 1989
Oct132.1 mm (5.2 in)27 October 2023
Nov179.6 mm (7.1 in)25 November 1979
Dec176.8 mm (7.0 in)12 December 1981

Period of Record Coverage

1956 to 2026
Days with data per year at San Juan L M Marin Intl AP 71 years of record at San Juan L M Marin Intl AP, 1956 to 2026. 1 years have data for under 90 percent of days and are left out of rankings: 2026. 1956: 366 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 363 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 364 of 365 days2026: 286 of 365 days1960197019801990200020102020
71 years of record at San Juan L M Marin Intl AP, 1956 to 2026. 1 years have data for under 90 percent of days and are left out of rankings: 2026.
Days with data per year at San Juan L M Marin Intl AP
YearDays with dataShare of yearComplete
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
1990365100%Yes
1991365100%Yes
1992366100%Yes
1993365100%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
201736399%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025364100%Yes
202628678%No

Latest Records

20
Latest records at San Juan L M Marin Intl AP
DateStationRecordValueBeat old record byOld record stoodSignificance
4 October 2026San Juan L M Marin Intl AP, PRdaily rain (Provisional)47.5 mm (1.9 in)20.3 mm (0.8 in)65 years41 of 100 (Notable)
12 September 2026San Juan L M Marin Intl AP, PRdaily high min (Tie, Provisional)27.2 C (81.0 F)tie1 year1 of 100 (Routine)
11 September 2026San Juan L M Marin Intl AP, PRdaily high min (Tie, Provisional)27.2 C (81.0 F)tie8 years2 of 100 (Routine)
10 September 2026San Juan L M Marin Intl AP, PRdaily high min (Tie, Provisional)26.7 C (80.1 F)tie51 years5 of 100 (Routine)
31 August 2026San Juan L M Marin Intl AP, PRdaily high max (Tie, Provisional)34.4 C (93.9 F)tie33 years4 of 100 (Routine)
27 August 2026San Juan L M Marin Intl AP, PRdaily high min (Tie, Provisional)27.2 C (81.0 F)tie12 years2 of 100 (Routine)
19 August 2026San Juan L M Marin Intl AP, PRdaily high min (Tie, Provisional)27.2 C (81.0 F)tie16 years2 of 100 (Routine)
17 August 2026San Juan L M Marin Intl AP, PRdaily high min (Tie)27.2 C (81.0 F)tie5 years2 of 100 (Routine)
15 August 2026San Juan L M Marin Intl AP, PRall-time high min (Tie)28.3 C (82.9 F)tie43 years10 of 100 (Routine)
10 August 2026San Juan L M Marin Intl AP, PRdaily high min (Tie)27.8 C (82.0 F)tie1 year1 of 100 (Routine)
3 August 2026San Juan L M Marin Intl AP, PRdaily high min (Tie)27.2 C (81.0 F)tie12 years2 of 100 (Routine)
2 August 2026San Juan L M Marin Intl AP, PRdaily high min (Tie)27.2 C (81.0 F)tie8 years2 of 100 (Routine)
1 August 2026San Juan L M Marin Intl AP, PRdaily high max (Tie)33.9 C (93.0 F)tie45 years5 of 100 (Routine)
29 July 2026San Juan L M Marin Intl AP, PRdaily high max34.4 C (93.9 F)0.5 C (0.9 F)41 years23 of 100 (Routine)
28 July 2026San Juan L M Marin Intl AP, PRdaily high max33.9 C (93.0 F)0.6 C (1.1 F)44 years25 of 100 (Routine)
25 July 2026San Juan L M Marin Intl AP, PRdaily high min (Tie)27.2 C (81.0 F)tie45 years5 of 100 (Routine)
20 July 2026San Juan L M Marin Intl AP, PRdaily high min (Tie)27.2 C (81.0 F)tie43 years4 of 100 (Routine)
18 July 2026San Juan L M Marin Intl AP, PRdaily high max (Tie)32.8 C (91.0 F)tie56 years5 of 100 (Routine)
12 July 2026San Juan L M Marin Intl AP, PRdaily high min (Tie)27.2 C (81.0 F)tie56 years5 of 100 (Routine)
5 July 2026San Juan L M Marin Intl AP, PRdaily high min (Tie)27.2 C (81.0 F)tie12 years2 of 100 (Routine)

Climate Trend

70 complete years, 1956 to 2025
Annual mean temperature at San Juan L M Marin Intl AP as warming stripes, 1956 to 2025 One stripe for each of 70 complete years at San Juan L M Marin Intl AP, 1956 to 2025. Blue stripes are years cooler than the station's own mean of 27.0 C (80.5 F); red stripes are warmer. The coolest year was 1956, at 25.4 C (77.7 F), and the warmest was 2024, at 28.5 C (83.3 F). The strongest colour marks a difference of 1.6 C (2.9 F). 1956: 25.4 C, -1.6 C from the station mean1957: 25.6 C, -1.3 C from the station mean1958: 26.1 C, -0.9 C from the station mean1959: 25.9 C, -1.0 C from the station mean1960: 26.1 C, -0.8 C from the station mean1961: 25.9 C, -1.0 C from the station mean1962: 25.8 C, -1.1 C from the station mean1963: 26.1 C, -0.8 C from the station mean1964: 26.4 C, -0.5 C from the station mean1965: 26.2 C, -0.8 C from the station mean1966: 26.3 C, -0.7 C from the station mean1967: 26.4 C, -0.6 C from the station mean1968: 26.2 C, -0.8 C from the station mean1969: 26.2 C, -0.7 C from the station mean1970: 26.7 C, -0.3 C from the station mean1971: 27.1 C, +0.1 C from the station mean1972: 27.3 C, +0.3 C from the station mean1973: 27.3 C, +0.3 C from the station mean1974: 27.1 C, +0.1 C from the station mean1975: 26.8 C, -0.2 C from the station mean1976: 26.8 C, -0.2 C from the station mean1977: 26.7 C, -0.3 C from the station mean1978: 27.3 C, +0.4 C from the station mean1979: 27.1 C, +0.2 C from the station mean1980: 27.9 C, +1.0 C from the station mean1981: 27.8 C, +0.8 C from the station mean1982: 27.3 C, +0.3 C from the station mean1983: 28.0 C, +1.0 C from the station mean1984: 26.9 C, 0.0 C from the station mean1985: 26.5 C, -0.5 C from the station mean1986: 26.4 C, -0.6 C from the station mean1987: 27.1 C, +0.2 C from the station mean1988: 26.9 C, -0.1 C from the station mean1989: 26.5 C, -0.5 C from the station mean1990: 26.8 C, -0.2 C from the station mean1991: 27.0 C, 0.0 C from the station mean1992: 27.2 C, +0.2 C from the station mean1993: 27.3 C, +0.3 C from the station mean1994: 27.3 C, +0.4 C from the station mean1995: 27.4 C, +0.5 C from the station mean1996: 26.6 C, -0.4 C from the station mean1997: 27.0 C, 0.0 C from the station mean1998: 27.1 C, +0.2 C from the station mean1999: 26.6 C, -0.3 C from the station mean2000: 26.6 C, -0.4 C from the station mean2001: 27.0 C, +0.1 C from the station mean2002: 27.0 C, +0.1 C from the station mean2003: 27.0 C, 0.0 C from the station mean2004: 26.7 C, -0.2 C from the station mean2005: 27.1 C, +0.1 C from the station mean2006: 27.0 C, 0.0 C from the station mean2007: 27.3 C, +0.3 C from the station mean2008: 26.8 C, -0.1 C from the station mean2009: 27.4 C, +0.5 C from the station mean2010: 27.3 C, +0.3 C from the station mean2011: 26.8 C, -0.2 C from the station mean2012: 27.6 C, +0.6 C from the station mean2013: 27.4 C, +0.4 C from the station mean2014: 27.8 C, +0.8 C from the station mean2015: 27.7 C, +0.7 C from the station mean2016: 27.5 C, +0.6 C from the station mean2017: 27.6 C, +0.6 C from the station mean2018: 27.1 C, +0.1 C from the station mean2019: 27.7 C, +0.7 C from the station mean2020: 27.7 C, +0.8 C from the station mean2021: 27.6 C, +0.6 C from the station mean2022: 27.2 C, +0.2 C from the station mean2023: 27.9 C, +0.9 C from the station mean2024: 28.5 C, +1.5 C from the station mean2025: 27.6 C, +0.6 C from the station mean19561960197019801990200020102020
One stripe for each of 70 complete years at San Juan L M Marin Intl AP, 1956 to 2025. Blue stripes are years cooler than the station's own mean of 27.0 C (80.5 F); red stripes are warmer. The coolest year was 1956, at 25.4 C (77.7 F), and the warmest was 2024, at 28.5 C (83.3 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at San Juan L M Marin Intl AP as warming stripes, 1956 to 2025
YearAnnual mean temperatureDifference from the station mean
195625.4 C-1.56 C
195725.6 C-1.31 C
195826.1 C-0.87 C
195925.9 C-1.02 C
196026.1 C-0.84 C
196125.9 C-1.04 C
196225.8 C-1.13 C
196326.1 C-0.84 C
196426.4 C-0.51 C
196526.2 C-0.79 C
196626.3 C-0.69 C
196726.4 C-0.58 C
196826.2 C-0.76 C
196926.2 C-0.74 C
197026.7 C-0.30 C
197127.1 C+0.12 C
197227.3 C+0.30 C
197327.3 C+0.33 C
197427.1 C+0.10 C
197526.8 C-0.17 C
197626.8 C-0.20 C
197726.7 C-0.30 C
197827.3 C+0.39 C
197927.1 C+0.17 C
198027.9 C+0.99 C
198127.8 C+0.85 C
198227.3 C+0.30 C
198328.0 C+1.02 C
198426.9 C-0.02 C
198526.5 C-0.50 C
198626.4 C-0.60 C
198727.1 C+0.18 C
198826.9 C-0.06 C
198926.5 C-0.48 C
199026.8 C-0.19 C
199127.0 C0.00 C
199227.2 C+0.22 C
199327.3 C+0.32 C
199427.3 C+0.36 C
199527.4 C+0.46 C
199626.6 C-0.40 C
199727.0 C+0.02 C
199827.1 C+0.17 C
199926.6 C-0.33 C
200026.6 C-0.37 C
200127.0 C+0.07 C
200227.0 C+0.09 C
200327.0 C0.00 C
200426.7 C-0.22 C
200527.1 C+0.10 C
200627.0 C+0.02 C
200727.3 C+0.30 C
200826.8 C-0.12 C
200927.4 C+0.48 C
201027.3 C+0.35 C
201126.8 C-0.19 C
201227.6 C+0.61 C
201327.4 C+0.44 C
201427.8 C+0.85 C
201527.7 C+0.74 C
201627.5 C+0.59 C
201727.6 C+0.64 C
201827.1 C+0.13 C
201927.7 C+0.73 C
202027.7 C+0.78 C
202127.6 C+0.60 C
202227.2 C+0.23 C
202327.9 C+0.92 C
202428.5 C+1.53 C
202527.6 C+0.65 C

The annual mean temperature here has risen by 0.2 C (0.2 to 0.3) per decade over 1956 to 2025. In Fahrenheit: 0.4 F (0.3 to 0.5) per decade. The slope is a straight line fitted to 70 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at San Juan L M Marin Intl AP
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (0.2 to 0.3) per decade0.4 F (0.3 to 0.5) per decade1956 to 202570Rise
Mean daily maximum0.1 C (0.1 to 0.2) per decade0.2 F (0.1 to 0.3) per decade1956 to 202570Rise
Mean daily minimum0.3 C (0.2 to 0.4) per decade0.6 F (0.4 to 0.7) per decade1956 to 202570Rise

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

1956 to 2026
Yearly extremes at San Juan L M Marin Intl AP: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)36.7 C (98.1 F)198134.4 C (93.9 F)71
Coldest night (TNn)15.6 C (60.1 F)195719.4 C (66.9 F)71
Wettest day (Rx1day)234.4 mm (9.2 in)201381.8 mm (3.2 in)71
Wettest five days (Rx5day)311.1 mm (12.2 in)2011151.2 mm (6.0 in)71
Longest dry spell (CDD)40 days198314 days71

Hottest day (TXx)

Hottest day (TXx) at San Juan L M Marin Intl AP by year The hottest day of the year at San Juan L M Marin Intl AP, 1956 to 2026. The record is 36.7 C (98.1 F) in 1981, marked on the chart; the median year is 34.4 C (93.9 F). 33343536371960198020002020Record: 36.7 C (98.1 F) in 1981
The hottest day of the year at San Juan L M Marin Intl AP, 1956 to 2026. The record is 36.7 C (98.1 F) in 1981, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at San Juan L M Marin Intl AP by year
YearHottest day (TXx)
195633.9 C (93.0 F)
195733.3 C (91.9 F)
195833.9 C (93.0 F)
195933.3 C (91.9 F)
196033.9 C (93.0 F)
196133.9 C (93.0 F)
196233.3 C (91.9 F)
196333.9 C (93.0 F)
196434.4 C (93.9 F)
196533.9 C (93.0 F)
196633.3 C (91.9 F)
196734.4 C (93.9 F)
196833.9 C (93.0 F)
196933.9 C (93.0 F)
197035.0 C (95.0 F)
197134.4 C (93.9 F)
197235.6 C (96.1 F)
197334.4 C (93.9 F)
197435.6 C (96.1 F)
197535.6 C (96.1 F)
197634.4 C (93.9 F)
197734.4 C (93.9 F)
197835.0 C (95.0 F)
197935.0 C (95.0 F)
198036.1 C (97.0 F)
198136.7 C (98.1 F)
198235.6 C (96.1 F)
198336.1 C (97.0 F)
198435.0 C (95.0 F)
198534.4 C (93.9 F)
198633.3 C (91.9 F)
198736.1 C (97.0 F)
198836.1 C (97.0 F)
198935.0 C (95.0 F)
199035.0 C (95.0 F)
199134.4 C (93.9 F)
199235.0 C (95.0 F)
199334.4 C (93.9 F)
199435.0 C (95.0 F)
199535.6 C (96.1 F)
199633.9 C (93.0 F)
199734.4 C (93.9 F)
199834.4 C (93.9 F)
199934.4 C (93.9 F)
200033.3 C (91.9 F)
200134.4 C (93.9 F)
200234.4 C (93.9 F)
200334.4 C (93.9 F)
200434.4 C (93.9 F)
200535.0 C (95.0 F)
200634.4 C (93.9 F)
200734.4 C (93.9 F)
200835.0 C (95.0 F)
200935.0 C (95.0 F)
201034.4 C (93.9 F)
201134.4 C (93.9 F)
201235.0 C (95.0 F)
201335.6 C (96.1 F)
201435.0 C (95.0 F)
201535.0 C (95.0 F)
201634.4 C (93.9 F)
201734.4 C (93.9 F)
201833.9 C (93.0 F)
201935.0 C (95.0 F)
202035.0 C (95.0 F)
202135.6 C (96.1 F)
202234.4 C (93.9 F)
202335.6 C (96.1 F)
202435.6 C (96.1 F)
202535.0 C (95.0 F)
202635.0 C (95.0 F)

Coldest night (TNn)

Coldest night (TNn) at San Juan L M Marin Intl AP by year The coldest night of the year at San Juan L M Marin Intl AP, 1956 to 2026. The record is 15.6 C (60.1 F) in 1957, marked on the chart; the median year is 19.4 C (66.9 F). 14161820221960198020002020Record: 15.6 C (60.1 F) in 1957
The coldest night of the year at San Juan L M Marin Intl AP, 1956 to 2026. The record is 15.6 C (60.1 F) in 1957, marked on the chart; the median year is 19.4 C (66.9 F).
Coldest night (TNn) at San Juan L M Marin Intl AP by year
YearColdest night (TNn)
195616.7 C (62.1 F)
195715.6 C (60.1 F)
195816.7 C (62.1 F)
195917.2 C (63.0 F)
196016.7 C (62.1 F)
196117.2 C (63.0 F)
196216.1 C (61.0 F)
196317.2 C (63.0 F)
196417.2 C (63.0 F)
196516.7 C (62.1 F)
196618.9 C (66.0 F)
196717.8 C (64.0 F)
196816.7 C (62.1 F)
196917.2 C (63.0 F)
197016.1 C (61.0 F)
197120.0 C (68.0 F)
197220.0 C (68.0 F)
197320.0 C (68.0 F)
197420.0 C (68.0 F)
197518.9 C (66.0 F)
197618.9 C (66.0 F)
197718.9 C (66.0 F)
197820.0 C (68.0 F)
197919.4 C (66.9 F)
198018.3 C (64.9 F)
198120.0 C (68.0 F)
198219.4 C (66.9 F)
198319.4 C (66.9 F)
198417.8 C (64.0 F)
198518.9 C (66.0 F)
198617.2 C (63.0 F)
198719.4 C (66.9 F)
198818.9 C (66.0 F)
198919.4 C (66.9 F)
199018.9 C (66.0 F)
199118.3 C (64.9 F)
199220.0 C (68.0 F)
199319.4 C (66.9 F)
199420.0 C (68.0 F)
199518.9 C (66.0 F)
199619.4 C (66.9 F)
199719.4 C (66.9 F)
199820.0 C (68.0 F)
199917.8 C (64.0 F)
200017.8 C (64.0 F)
200119.4 C (66.9 F)
200220.6 C (69.1 F)
200320.6 C (69.1 F)
200419.4 C (66.9 F)
200517.8 C (64.0 F)
200618.9 C (66.0 F)
200720.6 C (69.1 F)
200820.0 C (68.0 F)
200920.6 C (69.1 F)
201020.0 C (68.0 F)
201120.6 C (69.1 F)
201220.6 C (69.1 F)
201320.6 C (69.1 F)
201420.6 C (69.1 F)
201521.7 C (71.1 F)
201621.1 C (70.0 F)
201720.0 C (68.0 F)
201820.6 C (69.1 F)
201920.6 C (69.1 F)
202021.1 C (70.0 F)
202120.0 C (68.0 F)
202219.4 C (66.9 F)
202320.0 C (68.0 F)
202421.1 C (70.0 F)
202520.6 C (69.1 F)
202621.1 C (70.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at San Juan L M Marin Intl AP by year The wettest day of the year at San Juan L M Marin Intl AP, 1956 to 2026. The record is 234.4 mm (9.2 in) in 2013, marked on the chart; the median year is 81.8 mm (3.2 in). 0501001502002501960198020002020Record: 234.4 mm (9.2 in) in 2013
The wettest day of the year at San Juan L M Marin Intl AP, 1956 to 2026. The record is 234.4 mm (9.2 in) in 2013, marked on the chart; the median year is 81.8 mm (3.2 in).
Wettest day (Rx1day) at San Juan L M Marin Intl AP by year
YearWettest day (Rx1day)
195681.0 mm (3.2 in)
195754.9 mm (2.2 in)
195870.6 mm (2.8 in)
195978.5 mm (3.1 in)
196071.4 mm (2.8 in)
196182.0 mm (3.2 in)
196245.0 mm (1.8 in)
196378.0 mm (3.1 in)
196451.1 mm (2.0 in)
196590.2 mm (3.6 in)
196671.6 mm (2.8 in)
196748.3 mm (1.9 in)
196893.0 mm (3.7 in)
1969126.5 mm (5.0 in)
1970110.5 mm (4.4 in)
197147.0 mm (1.9 in)
197246.7 mm (1.8 in)
1973118.6 mm (4.7 in)
197460.5 mm (2.4 in)
197571.1 mm (2.8 in)
197692.5 mm (3.6 in)
197798.3 mm (3.9 in)
197865.3 mm (2.6 in)
1979179.6 mm (7.1 in)
198038.1 mm (1.5 in)
1981176.8 mm (7.0 in)
198269.6 mm (2.7 in)
198398.3 mm (3.9 in)
198461.2 mm (2.4 in)
198574.2 mm (2.9 in)
1986114.6 mm (4.5 in)
198798.6 mm (3.9 in)
1988180.3 mm (7.1 in)
1989224.5 mm (8.8 in)
199043.9 mm (1.7 in)
199154.1 mm (2.1 in)
199295.0 mm (3.7 in)
199373.9 mm (2.9 in)
199438.1 mm (1.5 in)
1995100.3 mm (3.9 in)
1996208.3 mm (8.2 in)
199737.8 mm (1.5 in)
1998102.6 mm (4.0 in)
199962.2 mm (2.4 in)
2000117.6 mm (4.6 in)
200169.1 mm (2.7 in)
200281.8 mm (3.2 in)
200362.0 mm (2.4 in)
200497.0 mm (3.8 in)
2005124.5 mm (4.9 in)
200685.1 mm (3.4 in)
200762.0 mm (2.4 in)
200873.9 mm (2.9 in)
200997.8 mm (3.9 in)
201089.4 mm (3.5 in)
2011146.3 mm (5.8 in)
201278.5 mm (3.1 in)
2013234.4 mm (9.2 in)
201497.0 mm (3.8 in)
201546.2 mm (1.8 in)
2016147.8 mm (5.8 in)
2017180.6 mm (7.1 in)
201850.0 mm (2.0 in)
201971.6 mm (2.8 in)
2020113.3 mm (4.5 in)
202188.9 mm (3.5 in)
2022104.1 mm (4.1 in)
2023132.1 mm (5.2 in)
2024124.7 mm (4.9 in)
202562.2 mm (2.4 in)
202647.5 mm (1.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at San Juan L M Marin Intl AP by year The wettest five days of the year at San Juan L M Marin Intl AP, 1956 to 2026. The record is 311.1 mm (12.2 in) in 2011, marked on the chart; the median year is 151.2 mm (6.0 in). 01002003004001960198020002020Record: 311.1 mm (12.2 in) in 2011
The wettest five days of the year at San Juan L M Marin Intl AP, 1956 to 2026. The record is 311.1 mm (12.2 in) in 2011, marked on the chart; the median year is 151.2 mm (6.0 in).
Wettest five days (Rx5day) at San Juan L M Marin Intl AP by year
YearWettest five days (Rx5day)
1956151.2 mm (6.0 in)
195780.1 mm (3.2 in)
1958153.7 mm (6.1 in)
1959105.9 mm (4.2 in)
196095.5 mm (3.8 in)
1961154.1 mm (6.1 in)
196291.1 mm (3.6 in)
1963144.0 mm (5.7 in)
196488.9 mm (3.5 in)
1965183.1 mm (7.2 in)
1966108.3 mm (4.3 in)
196788.7 mm (3.5 in)
1968172.8 mm (6.8 in)
1969138.7 mm (5.5 in)
1970294.4 mm (11.6 in)
197152.4 mm (2.1 in)
197285.8 mm (3.4 in)
1973213.4 mm (8.4 in)
1974161.7 mm (6.4 in)
1975138.9 mm (5.5 in)
1976147.1 mm (5.8 in)
1977243.5 mm (9.6 in)
1978128.9 mm (5.1 in)
1979224.3 mm (8.8 in)
198076.2 mm (3.0 in)
1981268.7 mm (10.6 in)
1982173.4 mm (6.8 in)
1983202.2 mm (8.0 in)
198496.2 mm (3.8 in)
1985157.7 mm (6.2 in)
1986152.1 mm (6.0 in)
1987210.4 mm (8.3 in)
1988214.1 mm (8.4 in)
1989247.9 mm (9.8 in)
199092.2 mm (3.6 in)
199176.2 mm (3.0 in)
1992157.2 mm (6.2 in)
1993113.8 mm (4.5 in)
199479.3 mm (3.1 in)
1995162.5 mm (6.4 in)
1996250.8 mm (9.9 in)
199778.8 mm (3.1 in)
1998154.5 mm (6.1 in)
1999103.1 mm (4.1 in)
2000155.0 mm (6.1 in)
2001100.9 mm (4.0 in)
2002103.2 mm (4.1 in)
2003115.9 mm (4.6 in)
2004173.5 mm (6.8 in)
2005286.0 mm (11.3 in)
2006142.8 mm (5.6 in)
2007140.0 mm (5.5 in)
2008166.3 mm (6.5 in)
2009151.1 mm (5.9 in)
2010197.7 mm (7.8 in)
2011311.1 mm (12.2 in)
2012149.4 mm (5.9 in)
2013268.2 mm (10.6 in)
2014155.6 mm (6.1 in)
201584.3 mm (3.3 in)
2016198.0 mm (7.8 in)
2017282.5 mm (11.1 in)
201891.4 mm (3.6 in)
2019104.7 mm (4.1 in)
2020164.1 mm (6.5 in)
2021122.7 mm (4.8 in)
2022230.2 mm (9.1 in)
2023161.3 mm (6.4 in)
2024172.8 mm (6.8 in)
202591.7 mm (3.6 in)
202693.2 mm (3.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at San Juan L M Marin Intl AP by year The longest dry spell of the year at San Juan L M Marin Intl AP, 1956 to 2026. The record is 40 days in 1983, marked on the chart; the median year is 14 days. 0102030401960198020002020Record: 40 days in 1983
The longest dry spell of the year at San Juan L M Marin Intl AP, 1956 to 2026. The record is 40 days in 1983, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at San Juan L M Marin Intl AP by year
YearLongest dry spell (CDD)
195611 days
195720 days
195818 days
195912 days
196014 days
196114 days
196214 days
19639 days
196419 days
196519 days
196616 days
196716 days
196821 days
196917 days
197017 days
197112 days
197217 days
197333 days
197417 days
197513 days
197621 days
197711 days
197811 days
197922 days
198023 days
198112 days
198211 days
198340 days
198428 days
198521 days
198614 days
198718 days
198819 days
198919 days
199013 days
199110 days
199212 days
199311 days
199415 days
199515 days
19969 days
199740 days
199812 days
199914 days
200016 days
200114 days
200216 days
200311 days
200411 days
200536 days
200614 days
200720 days
200814 days
200910 days
201024 days
20119 days
201224 days
201312 days
201422 days
201521 days
20169 days
201716 days
201817 days
201912 days
202012 days
202114 days
202213 days
202312 days
202413 days
20255 days
202618 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

70 years, 1956 to 2025

A day with at least 82.6 mm (3.3 in) of rain is expected about once in 2 years. A day with at least 260.3 mm (10.2 in) of rain is expected about once in 100 years.

Rainfall return levels at San Juan L M Marin Intl AP: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years82.6 mm (3.3 in)
5 years120.2 mm (4.7 in)
10 years148.7 mm (5.9 in)
25 years189.3 mm (7.5 in)
50 years223.1 mm (8.8 in)
100 years260.3 mm (10.2 in)Longer than the 70 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, 70 years of values from 1956 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: 234.4 mm (9.2 in) in 2013; 224.5 mm (8.8 in) in 1989; 208.3 mm (8.2 in) in 1996.

Climate Twins

2011 to 2025 against 1961 to 1990

Over 2011 to 2025, San Juan L M Marin Intl AP had a mean temperature of 27.6 C (81.6 F) and 1,646.5 mm (64.8 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Surat Thani (Thailand, 16,546 km away), Suchiate (Mexico, 2,812 km away) and Roberts (Cayman Islands [United Kingdom], 1,618 km away).

Climate twins of San Juan L M Marin Intl AP: stations whose 1961 to 1990 climate is closest to its 2011 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
Surat ThaniThailand16,546 km (10,281 mi)27.1 C (80.7 F)1,683.0 mm (66.3 in)1.20
SuchiateMexico2,812 km (1,747 mi)27.7 C (81.8 F)1,735.2 mm (68.3 in)1.22
RobertsCayman Islands [United Kingdom]1,618 km (1,005 mi)26.4 C (79.6 F)1,506.7 mm (59.3 in)1.29

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for San Juan L M Marin Intl AP standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for San Juan L M Marin Intl 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 . Last revised (2026-10-17).