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

Arroyo Seco Rng STN Fc Threshold Days by Year (USC00040327)

14 fixed thresholds counted per year at Arroyo Seco Rng STN Fc (USC00040327): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Arroyo Seco Rng STN Fc Thresholds

  • Arroyo Seco Rng STN Fc: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 1952 with 24.
  • Arroyo Seco Rng STN Fc: days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 1938 with 15.
  • Arroyo Seco Rng STN Fc: days with 50 mm (1.97 in) or more of precipitation in 34 years, most in 1938 with 7.
  • Arroyo Seco Rng STN Fc: days with 100 mm (3.94 in) or more of precipitation in 18 years, most in 1965 with 3.
  • 14 fixed thresholds have at least one qualifying day at Arroyo Seco Rng STN Fc.
3 years with a qualifying day
Days at or above 30 C (86 F) per year at Arroyo Seco Rng STN Fc Days per year at Arroyo Seco Rng STN Fc with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 111 in 1938. 0501001501938: 1111939: 1031940: 87193819391940
Days per year at Arroyo Seco Rng STN Fc with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 111 in 1938.
Days at or above 30 C (86 F) per year at Arroyo Seco Rng STN Fc
YearDaysDecade average
1938111107
1939103107
19408787
First to last qualifying date each year at Arroyo Seco Rng STN Fc For each year, a bar from the first to the last day at Arroyo Seco Rng STN Fc meeting 30 C (86 F). 1938: 18 April 1938 to 9 December 19381939: 6 April 1939 to 31 October 19391940: 6 March 1940 to 7 December 1940193819391940JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Arroyo Seco Rng STN Fc meeting 30 C (86 F).
First to last qualifying date each year at Arroyo Seco Rng STN Fc
YearFirst dateLast date
19381938-04-181938-12-09
19391939-04-061939-10-31
19401940-03-061940-12-07

Every Fixed Threshold

Fixed thresholds at Arroyo Seco Rng STN Fc
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3111193887
35 C (95 F): Days342193826
40 C (104 F): Days2519395
90 F (32.2 C): Days377193850
100 F (37.8 C): Days31319398
0 C (32 F): Frost days (min210193810
20 C (68 F): Tropical nights (min31019391
25 C (77 F): Days with min1319393
10 mm (0.39 in): Days with 10 mm or more rain4724195218
25 mm (0.98 in): Days with 25 mm or more rain4715193810
50 mm (1.97 in): Days with 50 mm or more rain34719383
100 mm (3.94 in): Days with 100 mm or more rain18319651
200 mm (7.87 in): Days with 200 mm or more rain4119381
10 cm (3.9 in): Days with 10 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 Arroyo Seco Rng STN Fc 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).