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

Ilseng Threshold Days by Year (NOE00156715)

10 fixed thresholds counted per year at Ilseng (NOE00156715): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ilseng Thresholds

  • Ilseng: days with a maximum temperature at or below 0 C (32 F) in 25 years, most in 1968 with 118.
  • Ilseng: nights with a minimum temperature at or below 0 C (32 F) in 25 years, most in 1971 with 198.
  • Ilseng: nights with a minimum temperature at or below -10 C (14 F) in 25 years, most in 1968 with 100.
  • Ilseng: nights with a minimum temperature at or below -20 C (-4 F) in 22 years, most in 1963 with 38.
  • 10 fixed thresholds have at least one qualifying day at Ilseng.
8 years with a qualifying day
Days at or above 30 C (86 F) per year at Ilseng Days per year at Ilseng with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 4 in 2018. 012341960: 11968: 11970: 22014: 32018: 42019: 22023: 12025: 419601968197020142018201920232025
Days per year at Ilseng with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 4 in 2018.
Days at or above 30 C (86 F) per year at Ilseng
YearDaysDecade average
196011
196811
197022
201433
201843
201923
202312.5
202542.5
First to last qualifying date each year at Ilseng For each year, a bar from the first to the last day at Ilseng meeting 30 C (86 F). 1960: 2 August 1960 to 2 August 19601968: 13 June 1968 to 13 June 19681970: 19 June 1970 to 20 June 19702014: 22 July 2014 to 24 July 20142018: 17 July 2018 to 28 July 20182019: 26 July 2019 to 28 July 20192023: 16 June 2023 to 16 June 20232025: 16 July 2025 to 24 July 202519601968197020142018201920232025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ilseng meeting 30 C (86 F).
First to last qualifying date each year at Ilseng
YearFirst dateLast date
19601960-08-021960-08-02
19681968-06-131968-06-13
19701970-06-191970-06-20
20142014-07-222014-07-24
20182018-07-172018-07-28
20192019-07-262019-07-28
20232023-06-162023-06-16
20252025-07-162025-07-24

Every Fixed Threshold

Fixed thresholds at Ilseng
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days8420184
90 F (32.2 C): Days2119701
0 C (32 F): Ice days (max25118196854
0 C (32 F): Frost days (min251981971133
-10 C (14 F): Days with min25100196835
-20 C (-4 F): Days with min223819633
-30 C (-22 F): Days with min4719663
20 C (68 F): Tropical nights (min2120181
10 mm (0.39 in): Days with 10 mm or more rain182319609
25 mm (0.98 in): Days with 25 mm or more rain6419641

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.

Download the Data

  • Data for Ilseng 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).