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

Ramona Threshold Days by Year (USC00047226)

10 fixed thresholds counted per year at Ramona (USC00047226): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ramona Thresholds

  • Ramona: days with 10 mm (0.39 in) or more of precipitation in 13 years, most in 1930 with 21.
  • Ramona: days with 25 mm (0.98 in) or more of precipitation in 11 years, most in 1930 with 6.
  • Ramona: days with a maximum temperature at or above 30 C (86 F) in 5 years, most in 1931 with 114.
  • Ramona: days with a maximum temperature at or above 35 C (95 F) in 5 years, most in 1929 with 39.
  • 10 fixed thresholds have at least one qualifying day at Ramona.
5 years with a qualifying day
Days at or above 30 C (86 F) per year at Ramona Days per year at Ramona with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 114 in 1931. 0501001501928: 1061929: 1001930: 961931: 1141932: 10219281929193019311932
Days per year at Ramona with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 114 in 1931.
Days at or above 30 C (86 F) per year at Ramona
YearDaysDecade average
1928106103
1929100103
193096104
1931114104
1932102104
First to last qualifying date each year at Ramona For each year, a bar from the first to the last day at Ramona meeting 30 C (86 F). 1928: 1 May 1928 to 31 December 19281929: 1 May 1929 to 18 December 19291930: 17 February 1930 to 8 November 19301931: 20 March 1931 to 4 November 19311932: 27 March 1932 to 26 November 193219281929193019311932JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ramona meeting 30 C (86 F).
First to last qualifying date each year at Ramona
YearFirst dateLast date
19281928-05-011928-12-31
19291929-05-011929-12-18
19301930-02-171930-11-08
19311931-03-201931-11-04
19321932-03-271932-11-26

Every Fixed Threshold

Fixed thresholds at Ramona
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days51141931102
35 C (95 F): Days539192931
40 C (104 F): Days3219282
90 F (32.2 C): Days574192872
100 F (37.8 C): Days512192812
0 C (32 F): Frost days (min440192936
20 C (68 F): Tropical nights (min2319313
10 mm (0.39 in): Days with 10 mm or more rain132119309
25 mm (0.98 in): Days with 25 mm or more rain11619302
50 mm (1.97 in): Days with 50 mm or more rain3219452

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1928.

Download the Data

  • Data for Ramona 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).