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Freeze-thaw

Feature Freeze-thaw days

December 2025 had 28 freeze-thaw days at Philadelphia's airport, the most of any month since 1940

Winter 2025-26 brought 70 freeze-thaw days to Philadelphia International Airport, the most since 2018-19, led by a record 28 in December.

70 Freeze-thaw days, winter ending 2026 · +16.7% on the year

Freeze-thaw days at the airport have declined since the 1940s, and 2025-26 brought 70

Freeze-thaw days per winter, July through June, Philadelphia International Airport, 1940-41 to 2025-26. Each bar is labeled with the year its winter ended.

Freeze-thaw days at the airport have declined since the 1940s, and 2025-26 brought 70Bar chart with 86 points from 1941 to 2026, in Freeze-thaw days. Series: Freeze-thaw days. Values range from 0 to 104.05010015019601980200020261941: 1041942: 871943: 931944: 971945: 751946: 631947: 831948: 861949: 661950: 851951: 761952: 781953: 671954: 661955: 671956: 821957: 721958: 621959: 781960: 1001961: 711962: 931963: 881964: 921965: 851966: 851967: 861968: 771969: 851970: 901971: 681972: 741973: 601974: 731975: 861976: 691977: 791978: 611979: 571980: 601981: 721982: 831983: 741984: 681985: 771986: 711987: 921988: 701989: 831990: 781991: 631992: 721993: 661994: 621995: 601996: 731997: 741998: 621999: 512000: 532001: 812002: 592003: 642004: 702005: 632006: 732007: 622008: 682009: 712010: 652011: 722012: 452013: 672014: 742015: 682016: 392017: 562018: 672019: 742020: 572021: 672022: 602023: 502024: 502025: 602026: 7070
Freeze-thaw days at the airport have declined since the 1940s, and 2025-26 brought 70Bar chart with 86 points from 1941 to 2026, in Freeze-thaw days. Series: Freeze-thaw days. Values range from 0 to 104.0501001501950200020261941: 1041942: 871943: 931944: 971945: 751946: 631947: 831948: 861949: 661950: 851951: 761952: 781953: 671954: 661955: 671956: 821957: 721958: 621959: 781960: 1001961: 711962: 931963: 881964: 921965: 851966: 851967: 861968: 771969: 851970: 901971: 681972: 741973: 601974: 731975: 861976: 691977: 791978: 611979: 571980: 601981: 721982: 831983: 741984: 681985: 771986: 711987: 921988: 701989: 831990: 781991: 631992: 721993: 661994: 621995: 601996: 731997: 741998: 621999: 512000: 532001: 812002: 592003: 642004: 702005: 632006: 732007: 622008: 682009: 712010: 652011: 722012: 452013: 672014: 742015: 682016: 392017: 562018: 672019: 742020: 572021: 672022: 602023: 502024: 502025: 602026: 7070
Counted by Conshy Roofers from NOAA daily highs and lows. Source: data.rcc-acis.org

All articles in Freeze-thaw

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DateTrendCategoryTitleSummary
DataDecember 2025 had 28 freeze-thaw days at Philadelphia's airport, the most of any month since 1940 FeatureWinter 2025-26 brought 70 freeze-thaw days to Philadelphia International Airport, the most since 2018-19, led by a record 28 in December.