Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Niigata Threshold Days by Year (JAW00043318)

12 fixed thresholds counted per year at Niigata (JAW00043318): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Niigata Thresholds

  • Niigata: days with a maximum temperature at or above 30 C (86 F) in 6 years, most in 2025 with 58.
  • Niigata: days with a maximum temperature at or above 90 F (32.2 C) in 6 years, most in 1955 with 23.
  • Niigata: nights with a minimum temperature at or below 0 C (32 F) in 6 years, most in 1956 with 77.
  • Niigata: nights with a minimum temperature at or above 20 C (68 F) in 6 years, most in 2025 with 92.
  • 12 fixed thresholds have at least one qualifying day at Niigata.
6 years with a qualifying day
Days at or above 30 C (86 F) per year at Niigata Days per year at Niigata with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 58 in 2025. 02040601952: 171953: 201954: 311955: 391956: 222025: 58195219531954195519562025
Days per year at Niigata with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 58 in 2025.
Days at or above 30 C (86 F) per year at Niigata
YearDaysDecade average
19521725.8
19532025.8
19543125.8
19553925.8
19562225.8
20255858
First to last qualifying date each year at Niigata For each year, a bar from the first to the last day at Niigata meeting 30 C (86 F). 1952: 11 July 1952 to 4 September 19521953: 17 July 1953 to 11 September 19531954: 19 July 1954 to 26 September 19541955: 28 June 1955 to 4 October 19551956: 5 June 1956 to 10 September 19562025: 21 May 2025 to 17 September 2025195219531954195519562025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Niigata meeting 30 C (86 F).
First to last qualifying date each year at Niigata
YearFirst dateLast date
19521952-07-111952-09-04
19531953-07-171953-09-11
19541954-07-191954-09-26
19551955-06-281955-10-04
19561956-06-051956-09-10
20252025-05-212025-09-17

Every Fixed Threshold

Fixed thresholds at Niigata
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days658202558
35 C (95 F): Days4319542
90 F (32.2 C): Days623195518
0 C (32 F): Ice days (max5419524
0 C (32 F): Frost days (min677195632
20 C (68 F): Tropical nights (min692202592
25 C (77 F): Days with min640202540
10 mm (0.39 in): Days with 10 mm or more rain572195263
25 mm (0.98 in): Days with 25 mm or more rain518195218
50 mm (1.97 in): Days with 50 mm or more rain4419531
10 cm (3.9 in): Days with 10 cm or more snowfall512195612
25 cm (9.8 in): Days with 25 cm or more snowfall5419523

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1952.

Download the Data

  • Data for Niigata 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).