June
June · August · July
82climate match
United States · 1991–2020
Best time to visit
Philadelphia.
June leads for comfortable weather in Philadelphia: typically 24.2°C by day, 13.8°C at night, with 94 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortJune
Typical high24.2°C
Typical low13.8°C
Rain in June94 mm
July
July · August · June
66climate match
May
May · September · June
77climate match
The weakest month is January, scoring 5 against June’s 82 — days reach only -1.4°C, 25° below the 24°C the score treats as ideal.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
5-1.4° / -11.8°
Feb
5-0.4° / -11.3°
Mar
54.4° / -5.8°
Apr
2212.2° / 1.4°
May
5819.6° / 8.4°
Jun
8224.2° / 13.8°
Jul
7526.7° / 16.7°
Aug
7726.2° / 15.8°
Sep
7322.3° / 11.3°
Oct
2914.8° / 4.9°
Nov
58.1° / -0.9°
Dec
51.8° / -6.9°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -1.4°C | -11.8°C | 93 mm | 14.1 | 9 h 13 | 5 | Strong coverage |
| February | -0.4°C | -11.3°C | 73 mm | 11.5 | 10 h 23 | 5 | Strong coverage |
| March | 4.4°C | -5.8°C | 70 mm | 10.2 | 11 h 47 | 5 | Strong coverage |
| April | 12.2°C | 1.4°C | 90 mm | 10.7 | 13 h 23 | 22 | Strong coverage |
| May | 19.6°C | 8.4°C | 93 mm | 10.9 | 14 h 44 | 58 | Strong coverage |
| June | 24.2°C | 13.8°C | 94 mm | 10.2 | 15 h 29 | 82 | Strong coverage |
| July | 26.7°C | 16.7°C | 88 mm | 9 | 15 h 11 | 75 | Strong coverage |
| August | 26.2°C | 15.8°C | 99 mm | 9.1 | 14 h 01 | 77 | Strong coverage |
| September | 22.3°C | 11.3°C | 98 mm | 9.4 | 12 h 27 | 73 | Strong coverage |
| October | 14.8°C | 4.9°C | 127 mm | 13.3 | 10 h 55 | 29 | Strong coverage |
| November | 8.1°C | -0.9°C | 108 mm | 11.6 | 9 h 33 | 5 | Strong coverage |
| December | 1.8°C | -6.9°C | 98 mm | 13.9 | 8 h 53 | 5 | Strong coverage |
What has changed
Philadelphia runs +0.8°C
on the 1961–1990 baseline.
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
Jan
+0.8
Feb
+1.0
Mar
+0.4
Apr
+0.2
May
+1.1
Jun
+0.3
Jul
+0.4
Aug
+0.6
Sep
+1.5
Oct
+1.1
Nov
0.0
Dec
+1.8
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.9°C26 Jan 1950 | -36.7°C4 Jan 1981 | 54 mm8 Jan 1998 | 183 mm1999 · driest 20 mm in 1933 | 131 |
| February | 19.4°C22 Feb 2018 | -35.0°C2 Feb 1961 | 62 mm17 Feb 1954 | 164 mm2016 · driest 11 mm in 1978 | 130 |
| March | 27.8°C16 Mar 1990 | -29.4°C3 Mar 1950 | 45 mm1 Mar 1900 | 157 mm1921 · driest 9 mm in 1967 | 133 |
| April | 33.3°C29 Apr 1990 | -17.2°C1 Apr 1923 | 49 mm2 Apr 1973 | 155 mm2011 · driest 16 mm in 1900 | 131 |
| May | 33.3°C22 May 1911 | -6.1°C10 May 1902 | 82 mm13 May 1906 | 225 mm1912 · driest 3 mm in 1920 | 130 |
| June | 36.7°C26 Jun 1895 | -1.1°C1 Jun 1945 | 85 mm27 Jun 1970 | 204 mm1922 · driest 13 mm in 1912 | 132 |
| July | 37.2°C20 Jul 1894 | 1.7°C11 Jul 1898 | 100 mm18 Jul 2021 | 253 mm2021 · driest 15 mm in 2016 | 132 |
| August | 36.1°C15 Aug 2002 | 2.2°C24 Aug 1940 | 123 mm18 Aug 1949 | 245 mm2003 · driest 12 mm in 1894 | 131 |
| September | 35.6°C4 Sep 1953 | -3.3°C23 Sep 1896 | 118 mm26 Sep 1975 | 204 mm2005 · driest 5 mm in 1948 | 130 |
| October | 30.6°C6 Oct 2005 | -9.4°C27 Oct 1936 | 100 mm30 Oct 2017 | 312 mm2017 · driest 11 mm in 1963 | 129 |
| November | 25.6°C26 Nov 1896 | -19.4°C16 Nov 1933 | 89 mm17 Nov 1927 | 233 mm1927 · driest 21 mm in 1904 | 130 |
| December | 20.6°C6 Dec 2001 | -39.4°C29 Dec 1933 | 69 mm17 Dec 1951 | 196 mm1899 · driest 32 mm in 1955 | 130 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | 3 | 12 |
| February | 0 | 0 | 27 | 2 | 10 |
| March | <1 | 0 | 25 | 2 | 6 |
| April | 1 | <1 | 13 | 3 | 1 |
| May | 7 | <1 | 1 | 3 | 0 |
| June | 14 | 3 | 0 | 3 | 0 |
| July | 23 | 6 | 0 | 3 | 0 |
| August | 21 | 4 | 0 | 3 | 0 |
| September | 9 | 2 | <1 | 3 | 0 |
| October | 1 | 0 | 6 | 4 | <1 |
| November | 0 | 0 | 17 | 4 | 3 |
| December | 0 | 0 | 26 | 3 | 9 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 44% | 8% | 64% | -5.3–1.8°C |
| February | 0% | 39% | 7% | 52% | -3.9–2.2°C |
| March | 1% | 35% | 7% | 47% | 1.5–7.6°C |
| April | 9% | 35% | 9% | 47% | 9.7–14.4°C |
| May | 33% | 34% | 10% | 44% | 16.5–21.8°C |
| June | 59% | 31% | 10% | 36% | 22.4–26.3°C |
| July | 71% | 28% | 9% | 30% | 25.3–28.5°C |
| August | 70% | 28% | 10% | 31% | 24.3–27.8°C |
| September | 48% | 31% | 11% | 40% | 19.8–24.0°C |
| October | 16% | 37% | 11% | 53% | 12.8–16.9°C |
| November | 2% | 41% | 11% | 60% | 5.0–10.6°C |
| December | <1% | 44% | 10% | 65% | -2.2–3.8°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page
Nearby, measured,
and named.
- Place identity
- GeoNames 5131095
- NOAA station
- USC00309000 · WATERTOWN
- Station distance
- 23.9 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 28 usable years
- Daylight
- Calculated from latitude 44.15°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.