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

Los Alamos Threshold Days by Year (USC00045107)

9 fixed thresholds counted per year at Los Alamos (USC00045107): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Los Alamos Thresholds

  • Los Alamos: days with 10 mm (0.39 in) or more of precipitation in 74 years, most in 1941 with 31.
  • Los Alamos: days with 25 mm (0.98 in) or more of precipitation in 70 years, most in 1983 with 13.
  • Los Alamos: days with 50 mm (1.97 in) or more of precipitation in 36 years, most in 1941 with 4.
  • Los Alamos: days with a maximum temperature at or above 30 C (86 F) in 8 years, most in 1996 with 68.
  • 9 fixed thresholds have at least one qualifying day at Los Alamos.
8 years with a qualifying day
Days at or above 30 C (86 F) per year at Los Alamos Days per year at Los Alamos with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 68 in 1996. 0204060801996: 681997: 481998: 361999: 222000: 342001: 412002: 372004: 5119961997199819992000200120022004
Days per year at Los Alamos with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 68 in 1996.
Days at or above 30 C (86 F) per year at Los Alamos
YearDaysDecade average
19966843.5
19974843.5
19983643.5
19992243.5
20003440.8
20014140.8
20023740.8
20045140.8
First to last qualifying date each year at Los Alamos For each year, a bar from the first to the last day at Los Alamos meeting 30 C (86 F). 1996: 8 February 1996 to 10 November 19961997: 10 March 1997 to 3 November 19971998: 21 April 1998 to 21 October 19981999: 15 April 1999 to 1 November 19992000: 30 April 2000 to 19 September 20002001: 4 February 2001 to 16 October 20012002: 22 February 2002 to 21 November 20022004: 8 March 2004 to 14 October 200419961997199819992000200120022004JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Los Alamos meeting 30 C (86 F).
First to last qualifying date each year at Los Alamos
YearFirst dateLast date
19961996-02-081996-11-10
19971997-03-101997-11-03
19981998-04-211998-10-21
19991999-04-151999-11-01
20002000-04-302000-09-19
20012001-02-042001-10-16
20022002-02-222002-11-21
20042004-03-082004-10-14

Every Fixed Threshold

Fixed thresholds at Los Alamos
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days868199651
35 C (95 F): Days82219969
90 F (32.2 C): Days844199623
100 F (37.8 C): Days5319981
0 C (32 F): Frost days (min846200446
10 mm (0.39 in): Days with 10 mm or more rain7431194113
25 mm (0.98 in): Days with 25 mm or more rain701319834
50 mm (1.97 in): Days with 50 mm or more rain36419411
100 mm (3.94 in): Days with 100 mm or more rain1119831

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1996.

Download the Data

  • Data for Los Alamos 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).