Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Atotonilco Threshold Days by Year (MXN00028135)

15 fixed thresholds counted per year at Atotonilco (MXN00028135): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Atotonilco Thresholds

  • Atotonilco: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 1973 with 42.
  • Atotonilco: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 1976 with 15.
  • Atotonilco: days with a maximum temperature at or above 30 C (86 F) in 23 years, most in 2006 with 271.
  • Atotonilco: days with a maximum temperature at or above 35 C (95 F) in 23 years, most in 2006 with 155.
  • 15 fixed thresholds have at least one qualifying day at Atotonilco.
23 years with a qualifying day
Days at or above 30 C (86 F) per year at Atotonilco Days per year at Atotonilco with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 271 in 2006. 01002003001973: 2171974: 2181975: 2401976: 2091977: 2371978: 2281979: 2311980: 2281981: 2281982: 2551983: 2421984: 1991985: 2371987: 2281988: 2321989: 2321997: 2591998: 2691999: 2632000: 2602001: 2402005: 2412006: 27119731976197919821985198919992005
Days per year at Atotonilco with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 271 in 2006.
Days at or above 30 C (86 F) per year at Atotonilco
YearDaysDecade average
1973217225.7
1974218225.7
1975240225.7
1976209225.7
1977237225.7
1978228225.7
1979231225.7
1980228231.2
1981228231.2
1982255231.2
1983242231.2
1984199231.2
1985237231.2
1987228231.2
1988232231.2
1989232231.2
1997259263.7
1998269263.7
1999263263.7
2000260253
2001240253
2005241253
2006271253
First to last qualifying date each year at Atotonilco For each year, a bar from the first to the last day at Atotonilco meeting 30 C (86 F). 1973: 1 February 1973 to 31 December 19731974: 8 January 1974 to 28 November 19741975: 25 January 1975 to 28 December 19751976: 25 January 1976 to 28 December 19761977: 28 January 1977 to 31 December 19771978: 16 January 1978 to 31 December 19781979: 23 January 1979 to 23 December 19791980: 11 January 1980 to 2 December 19801981: 1 February 1981 to 31 December 19811982: 2 January 1982 to 2 December 19821983: 29 January 1983 to 28 December 19831984: 16 February 1984 to 16 December 19841985: 1 February 1985 to 30 November 19851987: 4 February 1987 to 25 December 19871988: 17 January 1988 to 27 November 19881989: 3 January 1989 to 28 November 19891997: 1 January 1997 to 25 December 19971998: 5 January 1998 to 31 December 19981999: 14 January 1999 to 20 December 19992000: 3 January 2000 to 29 November 20002001: 15 February 2001 to 22 December 20012005: 12 January 2005 to 29 December 20052006: 2 January 2006 to 31 December 200619731976197919821985198919992005JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Atotonilco meeting 30 C (86 F).
First to last qualifying date each year at Atotonilco
YearFirst dateLast date
19731973-02-011973-12-31
19741974-01-081974-11-28
19751975-01-251975-12-28
19761976-01-251976-12-28
19771977-01-281977-12-31
19781978-01-161978-12-31
19791979-01-231979-12-23
19801980-01-111980-12-02
19811981-02-011981-12-31
19821982-01-021982-12-02
19831983-01-291983-12-28
19841984-02-161984-12-16
19851985-02-011985-11-30
19871987-02-041987-12-25
19881988-01-171988-11-27
19891989-01-031989-11-28
19971997-01-011997-12-25
19981998-01-051998-12-31
19991999-01-141999-12-20
20002000-01-032000-11-29
20012001-02-152001-12-22
20052005-01-122005-12-29
20062006-01-022006-12-31

Every Fixed Threshold

Fixed thresholds at Atotonilco
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days232712006271
35 C (95 F): Days231552006155
40 C (104 F): Days221819987
45 C (113 F): Days7319842
90 F (32.2 C): Days231992006199
100 F (37.8 C): Days2357198050
110 F (43.3 C): Days9419783
0 C (32 F): Frost days (min11619731
20 C (68 F): Tropical nights (min232192006219
25 C (77 F): Days with min2130199815
10 mm (0.39 in): Days with 10 mm or more rain2442197320
25 mm (0.98 in): Days with 25 mm or more rain241519765
50 mm (1.97 in): Days with 50 mm or more rain21719731
100 mm (3.94 in): Days with 100 mm or more rain6219732
200 mm (7.87 in): Days with 200 mm or more rain3119731

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1973.

Download the Data

  • Data for Atotonilco 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).