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

Mama Threshold Days by Year (RSM00030157)

12 fixed thresholds counted per year at Mama (RSM00030157): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mama Thresholds

  • Mama: days with 10 mm (0.39 in) or more of precipitation in 67 years, most in 1952 with 18.
  • Mama: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 1948 with 2.
  • Mama: days with 50 mm (1.97 in) or more of precipitation in 5 years, most in 1950 with 1.
  • Mama: days with a maximum temperature at or above 30 C (86 F) in 3 years, most in 2006 with 23.
  • 12 fixed thresholds have at least one qualifying day at Mama.
3 years with a qualifying day
Days at or above 30 C (86 F) per year at Mama Days per year at Mama with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 23 in 2006. 01020302005: 132006: 232025: 15200520062025
Days per year at Mama with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 23 in 2006.
Days at or above 30 C (86 F) per year at Mama
YearDaysDecade average
20051318
20062318
20251515
First to last qualifying date each year at Mama For each year, a bar from the first to the last day at Mama meeting 30 C (86 F). 2005: 2 June 2005 to 6 August 20052006: 16 June 2006 to 4 August 20062025: 25 May 2025 to 6 August 2025200520062025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mama meeting 30 C (86 F).
First to last qualifying date each year at Mama
YearFirst dateLast date
20052005-06-022005-08-06
20062006-06-162006-08-04
20252025-05-252025-08-06

Every Fixed Threshold

Fixed thresholds at Mama
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days323200615
90 F (32.2 C): Days39200610
0 C (32 F): Ice days (max3148200672
0 C (32 F): Frost days (min10n/a78
-10 C (14 F): Days with min10n/a51
-20 C (-4 F): Days with min10n/a36
-30 C (-22 F): Days with min10n/a20
-40 C (-40 F): Days with min10n/a6
10 mm (0.39 in): Days with 10 mm or more rain671819523
25 mm (0.98 in): Days with 25 mm or more rain41219481
50 mm (1.97 in): Days with 50 mm or more rain5119501
100 mm (3.94 in): Days with 100 mm or more rain10n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2005.

Download the Data

  • Data for Mama 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).