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Built 2026-10-19 (19 October 2026)

Arroyo Frio Threshold Days by Year (MXN00012009)

10 fixed thresholds counted per year at Arroyo Frio (MXN00012009): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Arroyo Frio Thresholds

  • Arroyo Frio: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 2000 with 86.
  • Arroyo Frio: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 2000 with 40.
  • Arroyo Frio: nights with a minimum temperature at or above 20 C (68 F) in 39 years, most in 2001 with 318.
  • Arroyo Frio: days with a maximum temperature at or above 30 C (86 F) in 35 years, most in 1990 with 365.
  • 10 fixed thresholds have at least one qualifying day at Arroyo Frio.
35 years with a qualifying day
Days at or above 30 C (86 F) per year at Arroyo Frio Days per year at Arroyo Frio with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 365 in 1990. 01002003004001966: 3451967: 3021968: 3411969: 3141970: 3071971: 3461972: 3271975: 3081976: 3461977: 3541978: 3511979: 3571980: 3501981: 3231982: 3551985: 3351986: 3191987: 3311988: 2551990: 3651991: 3411992: 3591993: 3041994: 3011995: 3131996: 2501997: 2181998: 2431999: 2402000: 3312001: 3502002: 2472003: 3072004: 2932005: 144196619701976198019861991199519992003
Days per year at Arroyo Frio with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 365 in 1990.
Days at or above 30 C (86 F) per year at Arroyo Frio
YearDaysDecade average
1966345325.5
1967302325.5
1968341325.5
1969314325.5
1970307337
1971346337
1972327337
1975308337
1976346337
1977354337
1978351337
1979357337
1980350324
1981323324
1982355324
1985335324
1986319324
1987331324
1988255324
1990365293.4
1991341293.4
1992359293.4
1993304293.4
1994301293.4
1995313293.4
1996250293.4
1997218293.4
1998243293.4
1999240293.4
2000331278.7
2001350278.7
2002247278.7
2003307278.7
2004293278.7
2005144278.7
First to last qualifying date each year at Arroyo Frio For each year, a bar from the first to the last day at Arroyo Frio meeting 30 C (86 F). 1966: 1 January 1966 to 31 December 19661967: 1 January 1967 to 22 December 19671968: 1 January 1968 to 31 December 19681969: 1 January 1969 to 31 December 19691970: 1 January 1970 to 31 December 19701971: 1 January 1971 to 31 December 19711972: 1 January 1972 to 31 December 19721975: 1 January 1975 to 31 December 19751976: 1 January 1976 to 31 December 19761977: 1 January 1977 to 31 December 19771978: 1 January 1978 to 31 December 19781979: 1 January 1979 to 31 December 19791980: 1 January 1980 to 31 December 19801981: 1 January 1981 to 31 December 19811982: 1 January 1982 to 31 December 19821985: 1 January 1985 to 31 December 19851986: 1 January 1986 to 30 November 19861987: 1 January 1987 to 31 December 19871988: 1 January 1988 to 31 December 19881990: 1 January 1990 to 31 December 19901991: 1 January 1991 to 31 December 19911992: 1 January 1992 to 31 December 19921993: 1 January 1993 to 31 December 19931994: 1 January 1994 to 31 December 19941995: 1 January 1995 to 31 December 19951996: 4 January 1996 to 31 December 19961997: 4 January 1997 to 30 December 19971998: 3 January 1998 to 30 December 19981999: 1 January 1999 to 31 December 19992000: 1 January 2000 to 31 December 20002001: 1 January 2001 to 31 December 20012002: 1 January 2002 to 30 December 20022003: 1 January 2003 to 31 December 20032004: 1 January 2004 to 31 December 20042005: 1 January 2005 to 31 December 20051966197119781985199119962001JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Arroyo Frio meeting 30 C (86 F).
First to last qualifying date each year at Arroyo Frio
YearFirst dateLast date
19661966-01-011966-12-31
19671967-01-011967-12-22
19681968-01-011968-12-31
19691969-01-011969-12-31
19701970-01-011970-12-31
19711971-01-011971-12-31
19721972-01-011972-12-31
19751975-01-011975-12-31
19761976-01-011976-12-31
19771977-01-011977-12-31
19781978-01-011978-12-31
19791979-01-011979-12-31
19801980-01-011980-12-31
19811981-01-011981-12-31
19821982-01-011982-12-31
19851985-01-011985-12-31
19861986-01-011986-11-30
19871987-01-011987-12-31
19881988-01-011988-12-31
19901990-01-011990-12-31
19911991-01-011991-12-31
19921992-01-011992-12-31
19931993-01-011993-12-31
19941994-01-011994-12-31
19951995-01-011995-12-31
19961996-01-041996-12-31
19971997-01-041997-12-30
19981998-01-031998-12-30
19991999-01-011999-12-31
20002000-01-012000-12-31
20012001-01-012001-12-31
20022002-01-012002-12-30
20032003-01-012003-12-31
20042004-01-012004-12-31
20052005-01-012005-12-31

Every Fixed Threshold

Fixed thresholds at Arroyo Frio
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days353651990144
35 C (95 F): Days34208199011
90 F (32.2 C): Days3528919903
100 F (37.8 C): Days155019903
20 C (68 F): Tropical nights (min393182001211
25 C (77 F): Days with min51119922
10 mm (0.39 in): Days with 10 mm or more rain4186200066
25 mm (0.98 in): Days with 25 mm or more rain4140200029
50 mm (1.97 in): Days with 50 mm or more rain341719981
100 mm (3.94 in): Days with 100 mm or more rain6119791

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1966.

Download the Data

  • Data for Arroyo Frio 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).