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Built 2026-10-19 (19 October 2026)

Dryad Threshold Days by Year (USC00452253)

6 fixed thresholds counted per year at Dryad (USC00452253): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dryad Thresholds

  • Dryad: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 1975 with 59.
  • Dryad: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 2017 with 17.
  • Dryad: days with 50 mm (1.97 in) or more of precipitation in 16 years, most in 2022 with 5.
  • Dryad: days with 10 cm (3.9 in) or more of snowfall in 8 years, most in 1971 with 6.
  • 6 fixed thresholds have at least one qualifying day at Dryad.
24 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Dryad Days per year at Dryad with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 59 in 1975. 02040601964: 441965: 401966: 481967: 501968: 581969: 481970: 521971: 581972: 501973: 471974: 511975: 591976: 361977: 392013: 352017: 432018: 422019: 262020: 532021: 532022: 442023: 412024: 502025: 4819641967197019731976201720202023
Days per year at Dryad with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 59 in 1975.
Days with 10 mm (0.39 in) or more of precipitation per year at Dryad
YearDaysDecade average
19644448
19654048
19664848
19675048
19685848
19694848
19705249
19715849
19725049
19734749
19745149
19755949
19763649
19773949
20133536.5
20174336.5
20184236.5
20192636.5
20205348.2
20215348.2
20224448.2
20234148.2
20245048.2
20254848.2
First to last qualifying date each year at Dryad For each year, a bar from the first to the last day at Dryad meeting 10 mm (0.39 in). 1964: 1 January 1964 to 30 December 19641965: 1 January 1965 to 30 December 19651966: 1 January 1966 to 29 December 19661967: 1 January 1967 to 22 December 19671968: 9 January 1968 to 31 December 19681969: 4 January 1969 to 23 December 19691970: 13 January 1970 to 30 December 19701971: 8 January 1971 to 25 December 19711972: 8 January 1972 to 27 December 19721973: 12 January 1973 to 28 December 19731974: 13 January 1974 to 30 December 19741975: 1 January 1975 to 30 December 19751976: 4 January 1976 to 26 December 19761977: 10 February 1977 to 15 December 19772013: 7 January 2013 to 18 November 20132017: 18 January 2017 to 29 December 20172018: 5 January 2018 to 26 December 20182019: 15 January 2019 to 31 December 20192020: 4 January 2020 to 30 December 20202021: 2 January 2021 to 25 December 20212022: 3 January 2022 to 30 December 20222023: 7 January 2023 to 5 December 20232024: 6 January 2024 to 26 December 20242025: 3 January 2025 to 20 December 202519641967197019731976201720202023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Dryad meeting 10 mm (0.39 in).
First to last qualifying date each year at Dryad
YearFirst dateLast date
19641964-01-011964-12-30
19651965-01-011965-12-30
19661966-01-011966-12-29
19671967-01-011967-12-22
19681968-01-091968-12-31
19691969-01-041969-12-23
19701970-01-131970-12-30
19711971-01-081971-12-25
19721972-01-081972-12-27
19731973-01-121973-12-28
19741974-01-131974-12-30
19751975-01-011975-12-30
19761976-01-041976-12-26
19771977-02-101977-12-15
20132013-01-072013-11-18
20172017-01-182017-12-29
20182018-01-052018-12-26
20192019-01-152019-12-31
20202020-01-042020-12-30
20212021-01-022021-12-25
20222022-01-032022-12-30
20232023-01-072023-12-05
20242024-01-062024-12-26
20252025-01-032025-12-20

Every Fixed Threshold

Fixed thresholds at Dryad
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2459197548
25 mm (0.98 in): Days with 25 mm or more rain241720179
50 mm (1.97 in): Days with 50 mm or more rain16520221
100 mm (3.94 in): Days with 100 mm or more rain1120221
10 cm (3.9 in): Days with 10 cm or more snowfall8619711
25 cm (9.8 in): Days with 25 cm or more snowfall1119641

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.

Download the Data

  • Data for Dryad 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).