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Built 2026-10-19 (19 October 2026)

Rio Grande Threshold Days by Year (MXN00030292)

13 fixed thresholds counted per year at Rio Grande (MXN00030292): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rio Grande Thresholds

  • Rio Grande: days with a maximum temperature at or above 30 C (86 F) in 21 years, most in 1991 with 254.
  • Rio Grande: days with a maximum temperature at or above 35 C (95 F) in 21 years, most in 1991 with 127.
  • Rio Grande: days with a maximum temperature at or above 90 F (32.2 C) in 21 years, most in 1991 with 224.
  • Rio Grande: days with a maximum temperature at or above 100 F (37.8 C) in 21 years, most in 1995 with 41.
  • 13 fixed thresholds have at least one qualifying day at Rio Grande.
21 years with a qualifying day
Days at or above 30 C (86 F) per year at Rio Grande Days per year at Rio Grande with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 254 in 1991. 01002003001977: 1731980: 2051981: 1911982: 2181983: 1971984: 1591985: 2241989: 2171990: 2131991: 2541992: 2071993: 2061995: 2071996: 2131997: 2121998: 2361999: 2212000: 2212001: 2102003: 2382004: 2351977198219851991199519982001
Days per year at Rio Grande with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 254 in 1991.
Days at or above 30 C (86 F) per year at Rio Grande
YearDaysDecade average
1977173173
1980205201.6
1981191201.6
1982218201.6
1983197201.6
1984159201.6
1985224201.6
1989217201.6
1990213218.8
1991254218.8
1992207218.8
1993206218.8
1995207218.8
1996213218.8
1997212218.8
1998236218.8
1999221218.8
2000221226
2001210226
2003238226
2004235226
First to last qualifying date each year at Rio Grande For each year, a bar from the first to the last day at Rio Grande meeting 30 C (86 F). 1977: 15 January 1977 to 19 December 19771980: 7 January 1980 to 28 October 19801981: 26 January 1981 to 28 December 19811982: 2 January 1982 to 25 December 19821983: 19 January 1983 to 14 December 19831984: 12 February 1984 to 14 December 19841985: 10 January 1985 to 1 December 19851989: 1 January 1989 to 19 December 19891990: 19 January 1990 to 22 December 19901991: 15 January 1991 to 2 December 19911992: 4 February 1992 to 16 December 19921993: 7 January 1993 to 13 December 19931995: 13 January 1995 to 18 December 19951996: 2 January 1996 to 7 December 19961997: 4 January 1997 to 26 December 19971998: 6 January 1998 to 8 December 19981999: 1 January 1999 to 20 December 19992000: 3 January 2000 to 23 December 20002001: 17 January 2001 to 16 December 20012003: 3 February 2003 to 13 December 20032004: 4 January 2004 to 31 December 20041977198219851991199519982001JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rio Grande meeting 30 C (86 F).
First to last qualifying date each year at Rio Grande
YearFirst dateLast date
19771977-01-151977-12-19
19801980-01-071980-10-28
19811981-01-261981-12-28
19821982-01-021982-12-25
19831983-01-191983-12-14
19841984-02-121984-12-14
19851985-01-101985-12-01
19891989-01-011989-12-19
19901990-01-191990-12-22
19911991-01-151991-12-02
19921992-02-041992-12-16
19931993-01-071993-12-13
19951995-01-131995-12-18
19961996-01-021996-12-07
19971997-01-041997-12-26
19981998-01-061998-12-08
19991999-01-011999-12-20
20002000-01-032000-12-23
20012001-01-172001-12-16
20032003-02-032003-12-13
20042004-01-042004-12-31

Every Fixed Threshold

Fixed thresholds at Rio Grande
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days212541991235
35 C (95 F): Days21127199149
40 C (104 F): Days1122199515
90 F (32.2 C): Days212241991154
100 F (37.8 C): Days2141199511
110 F (43.3 C): Days1119931
20 C (68 F): Tropical nights (min212881992255
25 C (77 F): Days with min184119914
10 mm (0.39 in): Days with 10 mm or more rain21112198197
25 mm (0.98 in): Days with 25 mm or more rain2161199346
50 mm (1.97 in): Days with 50 mm or more rain2131198113
100 mm (3.94 in): Days with 100 mm or more rain21819982
200 mm (7.87 in): Days with 200 mm or more rain5119811

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1977.

Download the Data

  • Data for Rio Grande 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).