Daily records
Page built 2026-10-18
Data as of 2025-12-31
Search
Built 2026-10-18 (18 October 2026)

Mauna Loa 511 Threshold Days by Year

4 fixed thresholds counted per year at Mauna Loa 511 (USC00516190): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mauna Loa 511 Thresholds

  • Mauna Loa 511: days with 10 mm (0.39 in) or more of precipitation in 4 years, most in 2004 with 21.
  • Mauna Loa 511: days with 25 mm (0.98 in) or more of precipitation in 4 years, most in 2004 with 14.
  • Mauna Loa 511: days with 50 mm (1.97 in) or more of precipitation in 3 years, most in 2004 with 8.
  • Mauna Loa 511: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1955 with 2.
  • 4 fixed thresholds have at least one qualifying day at Mauna Loa 511.
4 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Mauna Loa 511 Days per year at Mauna Loa 511 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 2004. 01020301955: 131977: 132003: 142004: 211955197720032004
Days per year at Mauna Loa 511 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 2004.
Days with 10 mm (0.39 in) or more of precipitation per year at Mauna Loa 511
YearDaysDecade average
19551313
19771313
20031417.5
20042117.5
First to last qualifying date each year at Mauna Loa 511 For each year, a bar from the first to the last day at Mauna Loa 511 meeting 10 mm (0.39 in). 1955: 8 February 1955 to 22 December 19551977: 15 February 1977 to 31 December 19772003: 4 January 2003 to 28 December 20032004: 2 January 2004 to 28 December 20041955197720032004JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mauna Loa 511 meeting 10 mm (0.39 in).
First to last qualifying date each year at Mauna Loa 511
YearFirst dateLast date
19551955-02-081955-12-22
19771977-02-151977-12-31
20032003-01-042003-12-28
20042004-01-022004-12-28

Every Fixed Threshold

Fixed thresholds at Mauna Loa 511
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain421200421
25 mm (0.98 in): Days with 25 mm or more rain414200414
50 mm (1.97 in): Days with 50 mm or more rain3820048
100 mm (3.94 in): Days with 100 mm or more rain2219552

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.

Download the Data

  • Data for Mauna Loa 511 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).