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Built 2026-10-19 (19 October 2026)

San Simon 5 NW Threshold Days by Year (USC00027563)

17 fixed thresholds counted per year at San Simon 5 NW (USC00027563): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Simon 5 NW Thresholds

  • San Simon 5 NW: days with 10 mm (0.39 in) or more of precipitation in 33 years, most in 1911 with 14.
  • San Simon 5 NW: days with a maximum temperature at or above 30 C (86 F) in 17 years, most in 1910 with 188.
  • San Simon 5 NW: days with a maximum temperature at or above 35 C (95 F) in 17 years, most in 1910 with 102.
  • San Simon 5 NW: days with a maximum temperature at or above 40 C (104 F) in 17 years, most in 1905 with 25.
  • 17 fixed thresholds have at least one qualifying day at San Simon 5 NW.
17 years with a qualifying day
Days at or above 30 C (86 F) per year at San Simon 5 NW Days per year at San Simon 5 NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 188 in 1910. 0501001502001904: 1771905: 1481906: 1321907: 1441908: 1291909: 1711910: 1881911: 1861913: 1771915: 1441940: 1531941: 1361942: 1511943: 1331946: 1241947: 1671948: 144190419061908191019131940194219461948
Days per year at San Simon 5 NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 188 in 1910.
Days at or above 30 C (86 F) per year at San Simon 5 NW
YearDaysDecade average
1904177150.2
1905148150.2
1906132150.2
1907144150.2
1908129150.2
1909171150.2
1910188173.8
1911186173.8
1913177173.8
1915144173.8
1940153144
1941136144
1942151144
1943133144
1946124144
1947167144
1948144144
First to last qualifying date each year at San Simon 5 NW For each year, a bar from the first to the last day at San Simon 5 NW meeting 30 C (86 F). 1904: 25 February 1904 to 9 October 19041905: 11 March 1905 to 14 October 19051906: 10 April 1906 to 24 December 19061907: 18 March 1907 to 4 October 19071908: 8 May 1908 to 18 October 19081909: 3 March 1909 to 3 November 19091910: 4 March 1910 to 30 October 19101911: 29 March 1911 to 7 November 19111913: 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 19431946: 30 March 1946 to 22 October 19461947: 26 March 1947 to 21 October 19471948: 14 April 1948 to 17 October 1948190419071910191519421947JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Simon 5 NW meeting 30 C (86 F).
First to last qualifying date each year at San Simon 5 NW
YearFirst dateLast date
19041904-02-251904-10-09
19051905-03-111905-10-14
19061906-04-101906-12-24
19071907-03-181907-10-04
19081908-05-081908-10-18
19091909-03-031909-11-03
19101910-03-041910-10-30
19111911-03-291911-11-07
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
19461946-03-301946-10-22
19471947-03-261947-10-21
19481948-04-141948-10-17

Every Fixed Threshold

Fixed thresholds at San Simon 5 NW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days171881910144
35 C (95 F): Days17102191080
40 C (104 F): Days1725190517
90 F (32.2 C): Days171721910124
100 F (37.8 C): Days1744190535
110 F (43.3 C): Days21519051
0 C (32 F): Ice days (max3219131
0 C (32 F): Frost days (min161301904104
-10 C (14 F): Days with min1011191111
-20 C (-4 F): Days with min1119131
20 C (68 F): Tropical nights (min1661191022
25 C (77 F): Days with min61619074
10 mm (0.39 in): Days with 10 mm or more rain331419114
25 mm (0.98 in): Days with 25 mm or more rain16419051
50 mm (1.97 in): Days with 50 mm or more rain1119051
100 mm (3.94 in): Days with 100 mm or more rain1119051
10 cm (3.9 in): Days with 10 cm or more snowfall1119091

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1904.

Download the Data

  • Data for San Simon 5 NW 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 (2025-12-31).