Conshohocken, Pennsylvania

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Heat

Feature Summer heat

Summer 2026 was the fourth warmest at Philadelphia's airport since 1941, with three straight days above 100°F

June to August 2026 averaged 78.8°F at Philadelphia International Airport, the fourth warmest of 86 summers, with highs of 103, 102 and 101°F on July 2 to 4.

34 Days, summer 2026 · −5.6% on the year

Summers at the airport have brought more 90-degree days since the 1960s, and 2026 had 34

Days with a high of 90°F or hotter, June through August, Philadelphia International Airport, 1941 to 2026. The line is the trailing 10-summer average.

Summers at the airport have brought more 90-degree days since the 1960s, and 2026 had 34Bar chart with 86 points from 1941 to 2026, in Days. Series: Days at 90°F or hotter. Values range from 0 to 47.0204060196019802000202610-period average 311941: 211942: 181943: 381944: 341945: 161946: 141947: 131948: 181949: 331950: 141951: 181952: 331953: 321954: 251955: 321956: 121957: 281958: 111959: 241960: 51961: 81962: 71963: 181964: 231965: 101966: 311967: 121968: 251969: 71970: 121971: 181972: 171973: 231974: 191975: 181976: 191977: 221978: 241979: 141980: 311981: 151982: 121983: 341984: 71985: 71986: 281987: 271988: 471989: 171990: 171991: 371992: 121993: 381994: 341995: 451996: 31997: 201998: 231999: 352000: 82001: 212002: 392003: 232004: 72005: 272006: 252007: 212008: 202009: 122010: 462011: 302012: 362013: 162014: 172015: 292016: 382017: 212018: 252019: 302020: 362021: 342022: 432023: 172024: 302025: 362026: 3434
Summers at the airport have brought more 90-degree days since the 1960s, and 2026 had 34Bar chart with 86 points from 1941 to 2026, in Days. Series: Days at 90°F or hotter. Values range from 0 to 47.020406019502000202610-period average 311941: 211942: 181943: 381944: 341945: 161946: 141947: 131948: 181949: 331950: 141951: 181952: 331953: 321954: 251955: 321956: 121957: 281958: 111959: 241960: 51961: 81962: 71963: 181964: 231965: 101966: 311967: 121968: 251969: 71970: 121971: 181972: 171973: 231974: 191975: 181976: 191977: 221978: 241979: 141980: 311981: 151982: 121983: 341984: 71985: 71986: 281987: 271988: 471989: 171990: 171991: 371992: 121993: 381994: 341995: 451996: 31997: 201998: 231999: 352000: 82001: 212002: 392003: 232004: 72005: 272006: 252007: 212008: 202009: 122010: 462011: 302012: 362013: 162014: 172015: 292016: 382017: 212018: 252019: 302020: 362021: 342022: 432023: 172024: 302025: 362026: 3434
Counted by Conshy Roofers from NOAA daily highs through ACIS. Source: data.rcc-acis.org

All articles in Heat

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DateTrendCategoryTitleSummary
DataSummer 2026 was the fourth warmest at Philadelphia's airport since 1941, with three straight days above 100°F FeatureJune to August 2026 averaged 78.8°F at Philadelphia International Airport, the fourth warmest of 86 summers, with highs of 103, 102 and 101°F on July 2 to 4.