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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Valle Nacional Threshold Days by Year

13 fixed thresholds counted per year at Valle Nacional (MXN00020175): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Valle Nacional Thresholds

  • Valle Nacional: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 1968 with 103.
  • Valle Nacional: days with 25 mm (0.98 in) or more of precipitation in 34 years, most in 2009 with 57.
  • Valle Nacional: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 2009 with 274.
  • Valle Nacional: days with a maximum temperature at or above 35 C (95 F) in 33 years, most in 2009 with 138.
  • 13 fixed thresholds have at least one qualifying day at Valle Nacional.
33 years with a qualifying day
Days at or above 30 C (86 F) per year at Valle Nacional Days per year at Valle Nacional with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 274 in 2009. 01002003001961: 2301962: 2611963: 2561964: 2401965: 2411966: 2201967: 2451968: 2191970: 2261971: 2721972: 2681973: 2321974: 2651975: 2501976: 2201977: 2591978: 2341979: 2321980: 2461981: 2151982: 2471983: 2221984: 2061991: 2181992: 2281995: 2451996: 2311997: 392003: 2272004: 1722005: 1022009: 2742010: 247196119651970197419781982199220032010
Days per year at Valle Nacional with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 274 in 2009.
Days at or above 30 C (86 F) per year at Valle Nacional
YearDaysDecade average
1961230239
1962261239
1963256239
1964240239
1965241239
1966220239
1967245239
1968219239
1970226245.8
1971272245.8
1972268245.8
1973232245.8
1974265245.8
1975250245.8
1976220245.8
1977259245.8
1978234245.8
1979232245.8
1980246227.2
1981215227.2
1982247227.2
1983222227.2
1984206227.2
1991218192.2
1992228192.2
1995245192.2
1996231192.2
199739192.2
2003227193.8
2004172193.8
2005102193.8
2009274193.8
2010247247
First to last qualifying date each year at Valle Nacional For each year, a bar from the first to the last day at Valle Nacional meeting 30 C (86 F). 1961: 1 January 1961 to 18 December 19611962: 5 January 1962 to 29 December 19621963: 1 January 1963 to 12 December 19631964: 19 January 1964 to 26 December 19641965: 8 January 1965 to 24 December 19651966: 1 January 1966 to 31 December 19661967: 1 January 1967 to 31 December 19671968: 3 January 1968 to 27 December 19681970: 11 January 1970 to 30 December 19701971: 2 January 1971 to 30 December 19711972: 1 January 1972 to 30 December 19721973: 3 January 1973 to 31 December 19731974: 7 January 1974 to 31 December 19741975: 9 January 1975 to 31 December 19751976: 25 January 1976 to 31 December 19761977: 6 January 1977 to 31 December 19771978: 1 January 1978 to 31 December 19781979: 1 January 1979 to 24 December 19791980: 10 January 1980 to 8 December 19801981: 1 February 1981 to 31 December 19811982: 2 January 1982 to 26 December 19821983: 20 January 1983 to 28 December 19831984: 11 February 1984 to 31 December 19841991: 15 January 1991 to 13 December 19911992: 8 January 1992 to 18 December 19921995: 26 January 1995 to 18 December 19951996: 1 January 1996 to 29 December 19961997: 1 January 1997 to 25 October 19972003: 1 January 2003 to 24 December 20032004: 2 January 2004 to 1 December 20042005: 21 March 2005 to 24 October 20052009: 3 January 2009 to 31 December 20092010: 15 January 2010 to 31 December 20101961196619721977198219952005JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Valle Nacional meeting 30 C (86 F).
First to last qualifying date each year at Valle Nacional
YearFirst dateLast date
19611961-01-011961-12-18
19621962-01-051962-12-29
19631963-01-011963-12-12
19641964-01-191964-12-26
19651965-01-081965-12-24
19661966-01-011966-12-31
19671967-01-011967-12-31
19681968-01-031968-12-27
19701970-01-111970-12-30
19711971-01-021971-12-30
19721972-01-011972-12-30
19731973-01-031973-12-31
19741974-01-071974-12-31
19751975-01-091975-12-31
19761976-01-251976-12-31
19771977-01-061977-12-31
19781978-01-011978-12-31
19791979-01-011979-12-24
19801980-01-101980-12-08
19811981-02-011981-12-31
19821982-01-021982-12-26
19831983-01-201983-12-28
19841984-02-111984-12-31
19911991-01-151991-12-13
19921992-01-081992-12-18
19951995-01-261995-12-18
19961996-01-011996-12-29
19971997-01-011997-10-25
20032003-01-012003-12-24
20042004-01-022004-12-01
20052005-03-212005-10-24
20092009-01-032009-12-31
20102010-01-152010-12-31

Every Fixed Threshold

Fixed thresholds at Valle Nacional
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days332742009247
35 C (95 F): Days33138200989
40 C (104 F): Days2322201022
90 F (32.2 C): Days332002009161
100 F (37.8 C): Days2946199539
110 F (43.3 C): Days2319641
20 C (68 F): Tropical nights (min302581995189
25 C (77 F): Days with min201219831
10 mm (0.39 in): Days with 10 mm or more rain35103196884
25 mm (0.98 in): Days with 25 mm or more rain3457200945
50 mm (1.97 in): Days with 50 mm or more rain3234201034
100 mm (3.94 in): Days with 100 mm or more rain2813196110
200 mm (7.87 in): Days with 200 mm or more rain11219732

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

Download the Data

  • Data for Valle Nacional 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).