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

Valyermo Rs Threshold Days by Year (USC00049251)

15 fixed thresholds counted per year at Valyermo Rs (USC00049251): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Valyermo Rs Thresholds

  • Valyermo Rs: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1941 with 21.
  • Valyermo Rs: days with 25 mm (0.98 in) or more of precipitation in 40 years, most in 1938 with 9.
  • Valyermo Rs: nights with a minimum temperature at or below 0 C (32 F) in 26 years, most in 1964 with 154.
  • Valyermo Rs: days with a maximum temperature at or above 30 C (86 F) in 24 years, most in 1940 with 139.
  • 15 fixed thresholds have at least one qualifying day at Valyermo Rs.
24 years with a qualifying day
Days at or above 30 C (86 F) per year at Valyermo Rs Days per year at Valyermo Rs with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 139 in 1940. 0501001501938: 1161939: 1201940: 1391941: 1031942: 1191943: 1251944: 1001945: 1181946: 1221947: 1181948: 1061949: 1181951: 1131952: 1211953: 991955: 951956: 1111957: 991959: 1161960: 1291961: 1071962: 1201963: 991964: 11119381941194419471951195519591962
Days per year at Valyermo Rs with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 139 in 1940.
Days at or above 30 C (86 F) per year at Valyermo Rs
YearDaysDecade average
1938116118
1939120118
1940139116.8
1941103116.8
1942119116.8
1943125116.8
1944100116.8
1945118116.8
1946122116.8
1947118116.8
1948106116.8
1949118116.8
1951113107.7
1952121107.7
195399107.7
195595107.7
1956111107.7
195799107.7
1959116107.7
1960129113.2
1961107113.2
1962120113.2
196399113.2
1964111113.2
First to last qualifying date each year at Valyermo Rs For each year, a bar from the first to the last day at Valyermo Rs meeting 30 C (86 F). 1938: 18 April 1938 to 30 September 19381939: 8 April 1939 to 15 October 19391940: 12 April 1940 to 22 October 19401941: 7 May 1941 to 1 October 19411942: 7 May 1942 to 23 October 19421943: 22 April 1943 to 16 October 19431944: 5 May 1944 to 6 October 19441945: 19 April 1945 to 3 October 19451946: 23 April 1946 to 29 September 19461947: 14 April 1947 to 5 October 19471948: 16 April 1948 to 8 October 19481949: 22 April 1949 to 5 October 19491951: 24 May 1951 to 10 October 19511952: 1 May 1952 to 15 October 19521953: 13 June 1953 to 10 October 19531955: 21 May 1955 to 13 October 19551956: 16 May 1956 to 10 October 19561957: 27 May 1957 to 25 September 19571959: 2 April 1959 to 24 October 19591960: 5 April 1960 to 6 October 19601961: 3 April 1961 to 16 October 19611962: 13 April 1962 to 9 October 19621963: 6 May 1963 to 4 October 19631964: 12 May 1964 to 10 October 196419381941194419471951195519591962JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Valyermo Rs meeting 30 C (86 F).
First to last qualifying date each year at Valyermo Rs
YearFirst dateLast date
19381938-04-181938-09-30
19391939-04-081939-10-15
19401940-04-121940-10-22
19411941-05-071941-10-01
19421942-05-071942-10-23
19431943-04-221943-10-16
19441944-05-051944-10-06
19451945-04-191945-10-03
19461946-04-231946-09-29
19471947-04-141947-10-05
19481948-04-161948-10-08
19491949-04-221949-10-05
19511951-05-241951-10-10
19521952-05-011952-10-15
19531953-06-131953-10-10
19551955-05-211955-10-13
19561956-05-161956-10-10
19571957-05-271957-09-25
19591959-04-021959-10-24
19601960-04-051960-10-06
19611961-04-031961-10-16
19621962-04-131962-10-09
19631963-05-061963-10-04
19641964-05-121964-10-10

Every Fixed Threshold

Fixed thresholds at Valyermo Rs
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days241391940111
35 C (95 F): Days2470193930
40 C (104 F): Days13919405
90 F (32.2 C): Days24113194076
100 F (37.8 C): Days243819403
0 C (32 F): Ice days (max3419492
0 C (32 F): Frost days (min261541964154
-10 C (14 F): Days with min191219498
20 C (68 F): Tropical nights (min17719647
10 mm (0.39 in): Days with 10 mm or more rain462119413
25 mm (0.98 in): Days with 25 mm or more rain40919385
50 mm (1.97 in): Days with 50 mm or more rain17419461
100 mm (3.94 in): Days with 100 mm or more rain2219431
10 cm (3.9 in): Days with 10 cm or more snowfall6419491
25 cm (9.8 in): Days with 25 cm or more snowfall1119491

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1938.

Download the Data

  • Data for Valyermo Rs 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).