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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

KM. 91 + 600 Palo Alto Threshold Days by Year (MXN00026306)

14 fixed thresholds counted per year at KM. 91 + 600 Palo Alto (MXN00026306): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for KM. 91 + 600 Palo Alto Thresholds

  • KM. 91 + 600 Palo Alto: nights with a minimum temperature at or above 20 C (68 F) in 23 years, most in 1984 with 136.
  • KM. 91 + 600 Palo Alto: nights with a minimum temperature at or above 25 C (77 F) in 23 years, most in 2001 with 61.
  • KM. 91 + 600 Palo Alto: days with 10 mm (0.39 in) or more of precipitation in 23 years, most in 1984 with 24.
  • KM. 91 + 600 Palo Alto: days with 25 mm (0.98 in) or more of precipitation in 23 years, most in 1983 with 10.
  • 14 fixed thresholds have at least one qualifying day at KM. 91 + 600 Palo Alto.
22 years with a qualifying day
Days at or above 30 C (86 F) per year at KM. 91 + 600 Palo Alto Days per year at KM. 91 + 600 Palo Alto with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 280 in 2000. 01002003001982: 2591983: 2591984: 2771985: 2571993: 2061994: 2581995: 2461996: 2481997: 2531998: 2641999: 2572000: 2802001: 2442002: 2542003: 2592004: 2382006: 2522007: 2322008: 2272009: 2142010: 2072011: 22619821985199519982001200420082011
Days per year at KM. 91 + 600 Palo Alto with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 280 in 2000.
Days at or above 30 C (86 F) per year at KM. 91 + 600 Palo Alto
YearDaysDecade average
1982259263
1983259263
1984277263
1985257263
1993206247.4
1994258247.4
1995246247.4
1996248247.4
1997253247.4
1998264247.4
1999257247.4
2000280244.4
2001244244.4
2002254244.4
2003259244.4
2004238244.4
2006252244.4
2007232244.4
2008227244.4
2009214244.4
2010207216.5
2011226216.5
First to last qualifying date each year at KM. 91 + 600 Palo Alto For each year, a bar from the first to the last day at KM. 91 + 600 Palo Alto meeting 30 C (86 F). 1982: 16 February 1982 to 19 December 19821983: 6 January 1983 to 31 December 19831984: 1 January 1984 to 10 December 19841985: 14 February 1985 to 31 December 19851993: 6 March 1993 to 7 December 19931994: 3 January 1994 to 4 December 19941995: 3 February 1995 to 7 December 19951996: 8 January 1996 to 22 November 19961997: 1 January 1997 to 29 November 19971998: 30 January 1998 to 2 December 19981999: 21 February 1999 to 2 December 19992000: 13 January 2000 to 10 December 20002001: 4 January 2001 to 3 December 20012002: 16 February 2002 to 21 November 20022003: 19 January 2003 to 3 December 20032004: 17 February 2004 to 14 December 20042006: 5 January 2006 to 23 November 20062007: 7 March 2007 to 19 November 20072008: 24 February 2008 to 21 November 20082009: 23 February 2009 to 12 November 20092010: 17 March 2010 to 8 December 20102011: 15 February 2011 to 11 November 201119821985199519982001200420082011JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at KM. 91 + 600 Palo Alto meeting 30 C (86 F).
First to last qualifying date each year at KM. 91 + 600 Palo Alto
YearFirst dateLast date
19821982-02-161982-12-19
19831983-01-061983-12-31
19841984-01-011984-12-10
19851985-02-141985-12-31
19931993-03-061993-12-07
19941994-01-031994-12-04
19951995-02-031995-12-07
19961996-01-081996-11-22
19971997-01-011997-11-29
19981998-01-301998-12-02
19991999-02-211999-12-02
20002000-01-132000-12-10
20012001-01-042001-12-03
20022002-02-162002-11-21
20032003-01-192003-12-03
20042004-02-172004-12-14
20062006-01-052006-11-23
20072007-03-072007-11-19
20082008-02-242008-11-21
20092009-02-232009-11-12
20102010-03-172010-12-08
20112011-02-152011-11-11

Every Fixed Threshold

Fixed thresholds at KM. 91 + 600 Palo Alto
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days222802000226
35 C (95 F): Days222011999159
40 C (104 F): Days22105199914
45 C (113 F): Days4519981
90 F (32.2 C): Days222292000194
100 F (37.8 C): Days22152200071
110 F (43.3 C): Days151319991
0 C (32 F): Frost days (min5519974
20 C (68 F): Tropical nights (min231361984121
25 C (77 F): Days with min2361200141
10 mm (0.39 in): Days with 10 mm or more rain232419847
25 mm (0.98 in): Days with 25 mm or more rain231019832
50 mm (1.97 in): Days with 50 mm or more rain15420012
100 mm (3.94 in): Days with 100 mm or more rain4119831

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1982.

Download the Data

  • Data for KM. 91 + 600 Palo Alto 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).