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

Manhattan Threshold Days by Year (USC00245351)

13 fixed thresholds counted per year at Manhattan (USC00245351): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Manhattan Thresholds

  • Manhattan: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1969 with 11.
  • Manhattan: days with 10 cm (3.9 in) or more of snowfall in 23 years, most in 1957 with 5.
  • Manhattan: days with 25 mm (0.98 in) or more of precipitation in 15 years, most in 1969 with 2.
  • Manhattan: days with a maximum temperature at or above 30 C (86 F) in 4 years, most in 1897 with 24.
  • 13 fixed thresholds have at least one qualifying day at Manhattan.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at Manhattan Days per year at Manhattan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 24 in 1897. 01020301897: 241898: 231899: 161902: 221897189818991902
Days per year at Manhattan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 24 in 1897.
Days at or above 30 C (86 F) per year at Manhattan
YearDaysDecade average
18972421
18982321
18991621
19022222
First to last qualifying date each year at Manhattan For each year, a bar from the first to the last day at Manhattan meeting 30 C (86 F). 1897: 11 June 1897 to 2 September 18971898: 17 June 1898 to 19 September 18981899: 17 June 1899 to 24 July 18991902: 9 June 1902 to 26 August 19021897189818991902JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Manhattan meeting 30 C (86 F).
First to last qualifying date each year at Manhattan
YearFirst dateLast date
18971897-06-111897-09-02
18981898-06-171898-09-19
18991899-06-171899-07-24
19021902-06-091902-08-26

Every Fixed Threshold

Fixed thresholds at Manhattan
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days424189722
90 F (32.2 C): Days4918973
0 C (32 F): Ice days (max464189840
0 C (32 F): Frost days (min32201899220
-10 C (14 F): Days with min386189773
-20 C (-4 F): Days with min324189924
-30 C (-22 F): Days with min3918999
-40 C (-40 F): Days with min1118991
20 C (68 F): Tropical nights (min1118971
10 mm (0.39 in): Days with 10 mm or more rain311119698
25 mm (0.98 in): Days with 25 mm or more rain15219691
10 cm (3.9 in): Days with 10 cm or more snowfall23519574
25 cm (9.8 in): Days with 25 cm or more snowfall3119541

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1897.

Download the Data

  • Data for Manhattan 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).