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Built 2026-10-19 (19 October 2026)

Port San Juan Threshold Days by Year (USC00507738)

12 fixed thresholds counted per year at Port San Juan (USC00507738): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Port San Juan Thresholds

  • Port San Juan: days with a maximum temperature at or below 0 C (32 F) in 36 years, most in 2021 with 57.
  • Port San Juan: days with 10 mm (0.39 in) or more of precipitation in 36 years, most in 1981 with 137.
  • Port San Juan: days with 25 mm (0.98 in) or more of precipitation in 36 years, most in 2025 with 65.
  • Port San Juan: days with 50 mm (1.97 in) or more of precipitation in 36 years, most in 2025 with 24.
  • 12 fixed thresholds have at least one qualifying day at Port San Juan.
32 years with a qualifying day
Nights at or below 0 C (32 F) per year at Port San Juan Days per year at Port San Juan with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 191 in 1990. 0501001502001981: 1401990: 1911991: 1351992: 1761993: 1261996: 1521997: 1111999: 1552000: 1362001: 1402002: 1162003: 952004: 1142007: 1422008: 1572009: 1382010: 1342011: 1512013: 1412014: 1052015: 1222016: 582017: 1572018: 1342019: 1092020: 1612021: 1682022: 1452023: 1522024: 1422025: 1242026: 10619811993200020042010201520192023
Days per year at Port San Juan with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 191 in 1990.
Nights at or below 0 C (32 F) per year at Port San Juan
YearDaysDecade average
1981140140
1990191149.4
1991135149.4
1992176149.4
1993126149.4
1996152149.4
1997111149.4
1999155149.4
2000136129.8
2001140129.8
2002116129.8
200395129.8
2004114129.8
2007142129.8
2008157129.8
2009138129.8
2010134123.4
2011151123.4
2013141123.4
2014105123.4
2015122123.4
201658123.4
2017157123.4
2018134123.4
2019109123.4
2020161142.6
2021168142.6
2022145142.6
2023152142.6
2024142142.6
2025124142.6
2026106142.6
First to last qualifying date each year at Port San Juan For each year, a bar from the first to the last day at Port San Juan meeting 0 C (32 F). 1981: 10 January 1981 to 31 December 19811990: 1 January 1990 to 31 December 19901991: 1 January 1991 to 31 December 19911992: 1 January 1992 to 31 December 19921993: 2 January 1993 to 31 December 19931996: 2 January 1996 to 31 December 19961997: 1 January 1997 to 31 December 19971999: 1 January 1999 to 31 December 19992000: 1 January 2000 to 22 December 20002001: 2 January 2001 to 25 December 20012002: 3 January 2002 to 31 December 20022003: 1 January 2003 to 29 December 20032004: 1 January 2004 to 31 December 20042007: 1 January 2007 to 31 December 20072008: 2 January 2008 to 31 December 20082009: 1 January 2009 to 31 December 20092010: 1 January 2010 to 30 December 20102011: 2 January 2011 to 31 December 20112013: 4 January 2013 to 29 December 20132014: 2 January 2014 to 28 December 20142015: 1 January 2015 to 27 December 20152016: 6 January 2016 to 30 November 20162017: 1 January 2017 to 31 December 20172018: 2 January 2018 to 31 December 20182019: 2 January 2019 to 30 December 20192020: 1 January 2020 to 31 December 20202021: 1 January 2021 to 31 December 20212022: 1 January 2022 to 31 December 20222023: 3 January 2023 to 31 December 20232024: 1 January 2024 to 30 December 20242025: 2 January 2025 to 31 December 20252026: 1 January 2026 to 8 May 202619811993200020042010201520192023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Port San Juan meeting 0 C (32 F).
First to last qualifying date each year at Port San Juan
YearFirst dateLast date
19811981-01-101981-12-31
19901990-01-011990-12-31
19911991-01-011991-12-31
19921992-01-011992-12-31
19931993-01-021993-12-31
19961996-01-021996-12-31
19971997-01-011997-12-31
19991999-01-011999-12-31
20002000-01-012000-12-22
20012001-01-022001-12-25
20022002-01-032002-12-31
20032003-01-012003-12-29
20042004-01-012004-12-31
20072007-01-012007-12-31
20082008-01-022008-12-31
20092009-01-012009-12-31
20102010-01-012010-12-30
20112011-01-022011-12-31
20132013-01-042013-12-29
20142014-01-022014-12-28
20152015-01-012015-12-27
20162016-01-062016-11-30
20172017-01-012017-12-31
20182018-01-022018-12-31
20192019-01-022019-12-30
20202020-01-012020-12-31
20212021-01-012021-12-31
20222022-01-012022-12-31
20232023-01-032023-12-31
20242024-01-012024-12-30
20252025-01-022025-12-31
20262026-01-012026-05-08

Every Fixed Threshold

Fixed thresholds at Port San Juan
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1120161
0 C (32 F): Ice days (max3657202133
0 C (32 F): Frost days (min321911990106
-10 C (14 F): Days with min3150199024
10 mm (0.39 in): Days with 10 mm or more rain36137198153
25 mm (0.98 in): Days with 25 mm or more rain3665202532
50 mm (1.97 in): Days with 50 mm or more rain3624202511
100 mm (3.94 in): Days with 100 mm or more rain20220202
200 mm (7.87 in): Days with 200 mm or more rain1120181
10 cm (3.9 in): Days with 10 cm or more snowfall352019854
25 cm (9.8 in): Days with 25 cm or more snowfall25519841
50 cm (19.7 in): Days with 50 cm or more snowfall7119851

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2016.

Download the Data

  • Data for Port 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).