Portland Weather in January
Average highs run from 45°F on January 1 to 49°F on January 31, and lows from 37°F to 38°F. Normal precipitation for the month is 6.36 in over about 20 wet days.
January day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
January at a glance
- Average high
- 47°F
- Average low
- 37°F
- Precipitation
- 6.36 in
- Snowfall
- 1.3 in
- Record high
- 66°FJan 18, 2005
- Record low
- -2°FJan 31, 1950
- Chance of a freeze
- 86%
- Daylight
- 8 h 47 min to 9 h 43 min
- Cloud cover
- 76%
- Humidity
- 92%
- Dew point
- 36°F
- Wind
- 6.5 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Jan 1 | 45°F | 37°F | 60°F 1981 | 14°F 1979 | 64% | 3% |
| Jan 2 | 46°F | 37°F | 58°F 1953 | 16°F 1979 | 64% | 3% |
| Jan 3 | 46°F | 37°F | 62°F 2020 | 16°F 1950 | 64% | 3% |
| Jan 4 | 46°F | 37°F | 59°F 1984 | 19°F 1959 | 64% | 3% |
| Jan 5 | 46°F | 37°F | 58°F 1954 | 17°F 2017 | 64% | 3% |
| Jan 6 | 46°F | 37°F | 57°F 1956 | 14°F 1982 | 64% | 3% |
| Jan 7 | 46°F | 37°F | 62°F 1945 | 14°F 1974 | 64% | 3% |
| Jan 8 | 46°F | 37°F | 57°F 1953 | 14°F 1974 | 64% | 3% |
| Jan 9 | 46°F | 37°F | 61°F 1990 | 12°F 1974 | 64% | 3% |
| Jan 10 | 46°F | 37°F | 57°F 1945 | 16°F 1949 | 63% | 2% |
| Jan 11 | 46°F | 37°F | 58°F 2014 | 11°F 1963 | 63% | 2% |
| Jan 12 | 47°F | 37°F | 62°F 1991 | 13°F 1963 | 63% | 2% |
| Jan 13 | 47°F | 37°F | 61°F 1991 | 11°F 2017 | 63% | 2% |
| Jan 14 | 47°F | 37°F | 60°F 1974 | 9°F 1950 | 63% | 2% |
| Jan 15 | 47°F | 37°F | 62°F 1958 | 19°F 1947 | 63% | 2% |
| Jan 16 | 47°F | 37°F | 60°F 1971 | 8°F 1950 | 62% | 2% |
| Jan 17 | 47°F | 37°F | 59°F 1975 | 8°F 1950 | 62% | 2% |
| Jan 18 | 47°F | 37°F | 66°F 2005 | 10°F 1943 | 62% | 2% |
| Jan 19 | 47°F | 38°F | 60°F 1971 | 18°F 1950 | 62% | 2% |
| Jan 20 | 47°F | 38°F | 60°F 2022 | 15°F 1949 | 61% | 2% |
| Jan 21 | 47°F | 38°F | 59°F 1970 | 9°F 1962 | 61% | 2% |
| Jan 22 | 48°F | 38°F | 61°F 1970 | 9°F 1949 | 61% | 2% |
| Jan 23 | 48°F | 38°F | 60°F 1953 | 10°F 1943 | 61% | 2% |
| Jan 24 | 48°F | 38°F | 61°F 1984 | 3°F 1943 | 60% | 2% |
| Jan 25 | 48°F | 38°F | 59°F 1993 | 11°F 1949 | 60% | 2% |
| Jan 26 | 48°F | 38°F | 62°F 2003 | 6°F 1957 | 60% | 2% |
| Jan 27 | 48°F | 38°F | 56°F 1940 | 8°F 1957 | 60% | 2% |
| Jan 28 | 48°F | 38°F | 59°F 1992 | 10°F 1949 | 59% | 2% |
| Jan 29 | 48°F | 38°F | 62°F 1984 | 8°F 1950 | 59% | 2% |
| Jan 30 | 48°F | 38°F | 62°F 1995 | 10°F 1950 | 59% | 2% |
| Jan 31 | 49°F | 38°F | 62°F 2020 | -2°F 1950 | 59% | 2% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- January 1
- sunrise 7:51 AM, sunset 4:38 PM
- January 31
- sunrise 7:33 AM, sunset 5:16 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00356749 (Portland Kgw-TV), public domain. Records: NOAA GHCN-Daily, station USW00024229, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.