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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Hamilton Dome Threshold Days by Year

12 fixed thresholds counted per year at Hamilton Dome (USC00484205): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hamilton Dome Thresholds

  • Hamilton Dome: days with a maximum temperature at or above 30 C (86 F) in 1 years, most in 2014 with 29.
  • Hamilton Dome: days with a maximum temperature at or above 35 C (95 F) in 1 years, most in 2014 with 4.
  • Hamilton Dome: days with a maximum temperature at or above 90 F (32.2 C) in 1 years, most in 2014 with 14.
  • Hamilton Dome: days with a maximum temperature at or below 0 C (32 F) in 1 years, most in 2014 with 46.
  • 12 fixed thresholds have at least one qualifying day at Hamilton Dome.
1 years with a qualifying day
Days at or above 30 C (86 F) per year at Hamilton Dome Days per year at Hamilton Dome with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 29 in 2014. 01020302014: 292014
Days per year at Hamilton Dome with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 29 in 2014.
Days at or above 30 C (86 F) per year at Hamilton Dome
YearDaysDecade average
20142929
First to last qualifying date each year at Hamilton Dome For each year, a bar from the first to the last day at Hamilton Dome meeting 30 C (86 F). 2014: 29 May 2014 to 27 September 20142014JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Hamilton Dome meeting 30 C (86 F).
First to last qualifying date each year at Hamilton Dome
YearFirst dateLast date
20142014-05-292014-09-27

Every Fixed Threshold

Fixed thresholds at Hamilton Dome
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days129201429
35 C (95 F): Days1420144
90 F (32.2 C): Days114201414
0 C (32 F): Ice days (max146201446
0 C (32 F): Frost days (min11622014162
-10 C (14 F): Days with min156201456
-20 C (-4 F): Days with min119201419
-30 C (-22 F): Days with min1220142
10 mm (0.39 in): Days with 10 mm or more rain112201412
25 mm (0.98 in): Days with 25 mm or more rain1120141
10 cm (3.9 in): Days with 10 cm or more snowfall1620146
25 cm (9.8 in): Days with 25 cm or more snowfall1120141

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2014.

Download the Data

  • Data for Hamilton Dome 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).