January weather in Philadelphia, NY
The average temperature in Philadelphia in January is °F (°F–°F). Average precipitation: 4.70 inches.
January is a winter month in Philadelphia, and is cooler than the annual average of 0°F. Daylight averages about 9h 2m.
Avg High
°F
Avg Low
°F
Precipitation
4.70 in
Daylight
9h 2m
January records in Philadelphia
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 46.9°F (2022) | 1.9°F (2026) | 2.00 in (2022) |
| January 2 | 44.1°F (2023) | -7.1°F (2026) | 0.79 in (1964) |
| January 3 | 50.0°F (2023) | -2.9°F (2022) | 1.35 in (1966) |
| January 4 | 48.9°F (2020) | -2.9°F (2022) | 1.05 in (1951) |
| January 5 | 46.9°F (2023) | -9.0°F (2026) | 0.75 in (2020) |
| January 6 | 45.0°F (2022) | -9.0°F (2026) | 0.40 in (1949) |
| January 7 | 42.1°F (2020) | -6.0°F (1942) | 1.00 in (2022) |
| January 8 | 42.1°F (2020) | -11.9°F (1942) | 0.24 in (1947) |
| January 9 | 48.0°F (2026) | 1.0°F (2021) | 1.90 in (1978) |
| January 10 | 48.9°F (2026) | -18.0°F (1942) | 0.53 in (1962) |
| January 11 | 55.9°F (2020) | -9.0°F (2022) | 1.05 in (2017) |
| January 12 | 61.0°F (2020) | -5.1°F (2022) | 1.70 in (2020) |
| January 13 | 39.0°F (2023) | -8.0°F (1942) | 1.15 in (2018) |
| January 14 | 42.1°F (2026) | 10.9°F (2023) | 1.20 in (1979) |
| January 15 | 42.1°F (2026) | 0.0°F (2023) | 1.50 in (1978) |
| January 16 | 45.0°F (2021) | -9.0°F (2022) | 0.75 in (1962) |
| January 17 | 41.0°F (2020) | -2.9°F (2020) | 0.30 in (2024) |
| January 18 | 39.9°F (1942) | -0.9°F (2020) | 2.00 in (1978) |
| January 19 | 37.9°F (1942) | -8.0°F (2022) | 0.50 in (2020) |
| January 20 | 45.0°F (2022) | -7.1°F (2020) | 0.29 in (1952) |
| January 21 | 39.9°F (2021) | -11.9°F (2022) | 1.03 in (1978) |
| January 22 | 35.1°F (2023) | -22.0°F (2022) | 0.54 in (1946) |
| January 23 | 48.0°F (2020) | -8.0°F (2022) | 0.94 in (1957) |
| January 24 | 48.9°F (2020) | -29.9°F (2026) | 1.08 in (2019) |
| January 25 | 42.1°F (2020) | -17.0°F (2026) | 0.81 in (1953) |
| January 26 | 43.0°F (2020) | -18.0°F (2022) | 2.00 in (2021) |
| January 27 | 48.9°F (2020) | -15.0°F (2022) | 1.45 in (2020) |
| January 28 | 50.0°F (2020) | -13.0°F (2026) | 0.66 in (1953) |
| January 29 | 43.0°F (2020) | -14.1°F (2022) | 0.42 in (1973) |
| January 30 | 37.0°F (2020) | -18.0°F (2022) | 0.90 in (2020) |
| January 31 | 45.0°F (2020) | -14.1°F (2022) | 1.07 in (1969) |