39.873°N, 75.227°W · station PHLthr · 1872–2026 · 155 years of record
The Almanac Ribbon
Every day of the year at Philadelphia: the record high and record low ever set (outer lines), the everyday normal range (shaded band), and the full record envelope behind it.
Record highRecord lowNormal high–low band (1991–2020)hottest ever 106°F · coldest ever -11°F
Records by Month
Month
Record high
Record low
Jan
74°Jan 26, 1950
-7°Jan 17, 1982
Feb
79°Feb 25, 1930
-11°Feb 9, 1934
Mar
87°Mar 29, 1945
5°Mar 5, 1872
Apr
95°Apr 17, 2002
14°Apr 1, 1923
May
98°May 19, 2026
28°May 11, 1966
Jun
102°Jun 29, 1934
44°Jun 1, 1945
Jul
104°Jul 10, 1936
51°Jul 21, 1966
Aug
106°Aug 7, 1918
44°Aug 29, 1986
Sep
102°Sep 7, 1881
35°Sep 25, 1963
Oct
96°Oct 5, 1941
25°Oct 25, 1962
Nov
84°Nov 1, 1950
8°Nov 30, 1875
Dec
73°Dec 4, 1998
-5°Dec 30, 1880
All-time
106°Aug 7, 1918
-11°Feb 9, 1934
Longest-Standing Records
The daily records that have held the longest — set in the earliest years and never beaten since. Highs power Philadelphia on hottestsince.com; lows on coldestsince.com.
Oldest-standing record highs
Date
Record
Set
Standing
Feb 23
75°
1874
152yrs
Aug 20
95°
1874
152yrs
Jan 2
67°
1876
150yrs
Nov 11
75°
1879
147yrs
May 25
92°
1880
146yrs
May 26
96°
1880
146yrs
May 27
94°
1880
146yrs
May 12
92°
1881
145yrs
Aug 12
99°
1881
145yrs
Sep 6
102°
1881
145yrs
Sep 25
92°
1881
145yrs
Sep 29
88°
1881
145yrs
Oldest-standing record lows
Date
Record
Set
Standing
Mar 5
5°
1872
154yrs
Apr 3
25°
1874
152yrs
Apr 4
22°
1874
152yrs
Apr 10
28°
1874
152yrs
Apr 11
18°
1874
152yrs
Apr 12
28°
1874
152yrs
Apr 28
29°
1874
152yrs
Apr 29
34°
1874
152yrs
Jan 10
-5°
1875
151yrs
Feb 7
5°
1875
151yrs
Mar 22
14°
1875
151yrs
Apr 17
25°
1875
151yrs
All-Time Extremes
Hottest ever
106°F
1918-08-07
Coldest ever
-11°F
1934-02-09
Longest heat streak
18 days
≥ 90°F · ended 1988-08-15
The Warming Trend
Philadelphia's annual mean temperature, each year a stripe — blue below the 1991–2020 average, red above.
Days Above / Below the Mark
39 days ≥90°F in 2026 · normal 22 · record 55 in 2010
53 days ≤32°F in 2026 · normal 83 · record 125 in 1960
The Full Record
Every day of the year, record and normal high & low with the year each record was set. Type to filter, click a column to sort.