Daily records
Page built 2026-10-19
Data as of 2026-10-17
Search
Built 2026-10-19 (19 October 2026)

San Simon Threshold Days by Year (USC00027560)

17 fixed thresholds counted per year at San Simon (USC00027560): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Simon Thresholds

  • San Simon: days with 10 mm (0.39 in) or more of precipitation in 81 years, most in 1992 with 15.
  • San Simon: days with a maximum temperature at or above 30 C (86 F) in 55 years, most in 1950 with 184.
  • San Simon: days with a maximum temperature at or above 35 C (95 F) in 55 years, most in 2003 with 117.
  • San Simon: days with a maximum temperature at or above 40 C (104 F) in 55 years, most in 2018 with 32.
  • 17 fixed thresholds have at least one qualifying day at San Simon.
55 years with a qualifying day
Days at or above 30 C (86 F) per year at San Simon Days per year at San Simon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 184 in 1950. 0501001502001906: 1311907: 1431913: 1671915: 1341940: 1541941: 1371942: 1501943: 1311947: 1661950: 1841951: 1631952: 1691953: 1561954: 1771955: 1641956: 1661957: 1301958: 1381959: 1611960: 1601961: 1581987: 1471988: 1511989: 1811990: 1541991: 1481992: 1751993: 1631994: 1621995: 1531996: 1541997: 1601998: 1541999: 1462000: 1402001: 1662002: 1802003: 1682004: 1442005: 1612006: 1522007: 1542008: 1422010: 1432012: 1632014: 1392016: 1432018: 1762019: 1472021: 1332022: 1642023: 1592024: 1792025: 1772026: 1821906194219531959199019962002200820192026
Days per year at San Simon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 184 in 1950.
Days at or above 30 C (86 F) per year at San Simon
YearDaysDecade average
1906131137
1907143137
1913167150.5
1915134150.5
1940154147.6
1941137147.6
1942150147.6
1943131147.6
1947166147.6
1950184160.8
1951163160.8
1952169160.8
1953156160.8
1954177160.8
1955164160.8
1956166160.8
1957130160.8
1958138160.8
1959161160.8
1960160159
1961158159
1987147159.7
1988151159.7
1989181159.7
1990154156.9
1991148156.9
1992175156.9
1993163156.9
1994162156.9
1995153156.9
1996154156.9
1997160156.9
1998154156.9
1999146156.9
2000140156.3
2001166156.3
2002180156.3
2003168156.3
2004144156.3
2005161156.3
2006152156.3
2007154156.3
2008142156.3
2010143151.8
2012163151.8
2014139151.8
2016143151.8
2018176151.8
2019147151.8
2021133165.7
2022164165.7
2023159165.7
2024179165.7
2025177165.7
2026182165.7
First to last qualifying date each year at San Simon For each year, a bar from the first to the last day at San Simon meeting 30 C (86 F). 1906: 10 April 1906 to 5 October 19061907: 18 March 1907 to 4 October 19071913: 31 March 1913 to 4 November 19131915: 12 April 1915 to 5 November 19151940: 19 April 1940 to 22 October 19401941: 5 May 1941 to 13 October 19411942: 3 April 1942 to 9 October 19421943: 29 March 1943 to 26 October 19431947: 26 March 1947 to 21 October 19471950: 30 March 1950 to 31 October 19501951: 23 April 1951 to 24 October 19511952: 7 April 1952 to 27 October 19521953: 25 March 1953 to 17 October 19531954: 7 April 1954 to 23 October 19541955: 17 April 1955 to 21 October 19551956: 25 March 1956 to 22 October 19561957: 14 February 1957 to 3 October 19571958: 18 April 1958 to 21 September 19581959: 2 April 1959 to 26 October 19591960: 21 March 1960 to 8 October 19601961: 3 April 1961 to 21 October 19611987: 11 April 1987 to 28 October 19871988: 26 March 1988 to 18 October 19881989: 9 March 1989 to 25 October 19891990: 21 March 1990 to 10 October 19901991: 6 April 1991 to 19 October 19911992: 12 April 1992 to 27 October 19921993: 17 March 1993 to 13 October 19931994: 14 April 1994 to 13 October 19941995: 13 April 1995 to 29 October 19951996: 8 April 1996 to 15 October 19961997: 21 March 1997 to 10 October 19971998: 24 March 1998 to 25 October 19981999: 30 March 1999 to 26 October 19992000: 5 April 2000 to 6 October 20002001: 16 April 2001 to 3 November 20012002: 23 March 2002 to 15 October 20022003: 1 April 2003 to 24 October 20032004: 19 March 2004 to 16 October 20042005: 13 April 2005 to 23 October 20052006: 3 April 2006 to 5 October 20062007: 17 March 2007 to 27 October 20072008: 14 April 2008 to 29 September 20082010: 30 March 2010 to 30 October 20102012: 31 March 2012 to 2 November 20122014: 15 February 2014 to 26 October 20142016: 17 February 2016 to 30 October 20162018: 22 March 2018 to 7 October 20182019: 26 March 2019 to 17 October 20192021: 2 April 2021 to 22 October 20212022: 26 March 2022 to 4 October 20222023: 10 April 2023 to 7 November 20232024: 12 April 2024 to 28 October 20242025: 26 March 2025 to 20 November 20252026: 27 February 2026 to 12 October 202619061943195519871994200120082021JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Simon meeting 30 C (86 F).
First to last qualifying date each year at San Simon
YearFirst dateLast date
19061906-04-101906-10-05
19071907-03-181907-10-04
19131913-03-311913-11-04
19151915-04-121915-11-05
19401940-04-191940-10-22
19411941-05-051941-10-13
19421942-04-031942-10-09
19431943-03-291943-10-26
19471947-03-261947-10-21
19501950-03-301950-10-31
19511951-04-231951-10-24
19521952-04-071952-10-27
19531953-03-251953-10-17
19541954-04-071954-10-23
19551955-04-171955-10-21
19561956-03-251956-10-22
19571957-02-141957-10-03
19581958-04-181958-09-21
19591959-04-021959-10-26
19601960-03-211960-10-08
19611961-04-031961-10-21
19871987-04-111987-10-28
19881988-03-261988-10-18
19891989-03-091989-10-25
19901990-03-211990-10-10
19911991-04-061991-10-19
19921992-04-121992-10-27
19931993-03-171993-10-13
19941994-04-141994-10-13
19951995-04-131995-10-29
19961996-04-081996-10-15
19971997-03-211997-10-10
19981998-03-241998-10-25
19991999-03-301999-10-26
20002000-04-052000-10-06
20012001-04-162001-11-03
20022002-03-232002-10-15
20032003-04-012003-10-24
20042004-03-192004-10-16
20052005-04-132005-10-23
20062006-04-032006-10-05
20072007-03-172007-10-27
20082008-04-142008-09-29
20102010-03-302010-10-30
20122012-03-312012-11-02
20142014-02-152014-10-26
20162016-02-172016-10-30
20182018-03-222018-10-07
20192019-03-262019-10-17
20212021-04-022021-10-22
20222022-03-262022-10-04
20232023-04-102023-11-07
20242024-04-122024-10-28
20252025-03-262025-11-20
20262026-02-272026-10-12

Every Fixed Threshold

Fixed thresholds at San Simon
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days551841950182
35 C (95 F): Days55117200397
40 C (104 F): Days5532201835
45 C (113 F): Days1219942
90 F (32.2 C): Days551541989138
100 F (37.8 C): Days5566201865
110 F (43.3 C): Days9719943
0 C (32 F): Ice days (max4319131
0 C (32 F): Frost days (min53133202235
-10 C (14 F): Days with min371119472
20 C (68 F): Tropical nights (min5339201063
25 C (77 F): Days with min121619075
10 mm (0.39 in): Days with 10 mm or more rain8115199211
25 mm (0.98 in): Days with 25 mm or more rain53520002
50 mm (1.97 in): Days with 50 mm or more rain5119611
100 mm (3.94 in): Days with 100 mm or more rain10n/a1
10 cm (3.9 in): Days with 10 cm or more snowfall7219871

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1906.

Download the Data

  • Data for San Simon 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).