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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Hyampom Threshold Days by Year

5 fixed thresholds counted per year at Hyampom (USC00044191): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hyampom Thresholds

  • Hyampom: days with 10 mm (0.39 in) or more of precipitation in 7 years, most in 1998 with 53.
  • Hyampom: days with 25 mm (0.98 in) or more of precipitation in 7 years, most in 1998 with 21.
  • Hyampom: days with 50 mm (1.97 in) or more of precipitation in 6 years, most in 1950 with 6.
  • Hyampom: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1950 with 1.
  • 5 fixed thresholds have at least one qualifying day at Hyampom.
7 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Hyampom Days per year at Hyampom with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 53 in 1998. 02040601949: 181950: 381997: 361998: 531999: 402000: 322003: 251949195019971998199920002003
Days per year at Hyampom with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 53 in 1998.
Days with 10 mm (0.39 in) or more of precipitation per year at Hyampom
YearDaysDecade average
19491818
19503838
19973643
19985343
19994043
20003228.5
20032528.5
First to last qualifying date each year at Hyampom For each year, a bar from the first to the last day at Hyampom meeting 10 mm (0.39 in). 1949: 1 January 1949 to 18 December 19491950: 9 January 1950 to 14 December 19501997: 1 January 1997 to 17 December 19971998: 2 January 1998 to 13 December 19981999: 15 January 1999 to 2 December 19992000: 10 January 2000 to 21 December 20002003: 10 January 2003 to 22 December 20031949195019971998199920002003JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Hyampom meeting 10 mm (0.39 in).
First to last qualifying date each year at Hyampom
YearFirst dateLast date
19491949-01-011949-12-18
19501950-01-091950-12-14
19971997-01-011997-12-17
19981998-01-021998-12-13
19991999-01-151999-12-02
20002000-01-102000-12-21
20032003-01-102003-12-22

Every Fixed Threshold

Fixed thresholds at Hyampom
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain753199825
25 mm (0.98 in): Days with 25 mm or more rain721199814
50 mm (1.97 in): Days with 50 mm or more rain6619501
100 mm (3.94 in): Days with 100 mm or more rain2119501
10 cm (3.9 in): Days with 10 cm or more snowfall2119981

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for Hyampom 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).