Built 2026-10-18 (18 October 2026)

Morena Dam Threshold Days by Year

10 fixed thresholds counted per year at Morena Dam (USC00045840): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Morena Dam Thresholds

  • Morena Dam: days with 10 mm (0.39 in) or more of precipitation in 3 years, most in 1900 with 14.
  • Morena Dam: days with 25 mm (0.98 in) or more of precipitation in 2 years, most in 1900 with 6.
  • Morena Dam: days with a maximum temperature at or above 30 C (86 F) in 1 years, most in 1900 with 60.
  • Morena Dam: days with a maximum temperature at or above 35 C (95 F) in 1 years, most in 1900 with 12.
  • 10 fixed thresholds have at least one qualifying day at Morena Dam.
3 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Morena Dam Days per year at Morena Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 14 in 1900. 0510151900: 141949: 121950: 7190019491950
Days per year at Morena Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 14 in 1900.
Days with 10 mm (0.39 in) or more of precipitation per year at Morena Dam
YearDaysDecade average
19001414
19491212
195077
First to last qualifying date each year at Morena Dam For each year, a bar from the first to the last day at Morena Dam meeting 10 mm (0.39 in). 1900: 3 January 1900 to 23 November 19001949: 2 January 1949 to 19 December 19491950: 8 January 1950 to 8 April 1950190019491950JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Morena Dam meeting 10 mm (0.39 in).
First to last qualifying date each year at Morena Dam
YearFirst dateLast date
19001900-01-031900-11-23
19491949-01-021949-12-19
19501950-01-081950-04-08

Every Fixed Threshold

Fixed thresholds at Morena Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days160190060
35 C (95 F): Days112190012
40 C (104 F): Days1219002
90 F (32.2 C): Days138190038
100 F (37.8 C): Days1619006
0 C (32 F): Frost days (min143190043
20 C (68 F): Tropical nights (min1619006
10 mm (0.39 in): Days with 10 mm or more rain31419007
25 mm (0.98 in): Days with 25 mm or more rain2619001
50 mm (1.97 in): Days with 50 mm or more rain1219002

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1900.

Download the Data

  • Data for Morena Dam 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).