Eureka Weather in January
Average highs run from 37°F on January 1 to 38°F on January 31, and lows from 17°F to 18°F. Normal precipitation for the month is 0.85 in over about 6 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
- 38°F
- Average low
- 18°F
- Precipitation
- 0.85 in
- Snowfall
- 8.8 in
- Record high
- 63°FJan 5, 2012
- Record low
- -25°FJan 30, 2002
- Chance of a freeze
- 100%
- Daylight
- 9 h 27 min to 10 h 11 min
- Cloud cover
- 59%
- Humidity
- 67%
- Dew point
- 17°F
- Wind
- 8.3 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 | 37°F | 17°F | 54°F 2018 | -21°F 2016 | 20% | 11% |
| Jan 2 | 37°F | 17°F | 59°F 2012 | -14°F 2013 | 20% | 11% |
| Jan 3 | 37°F | 17°F | 60°F 2012 | -16°F 2013 | 20% | 11% |
| Jan 4 | 37°F | 17°F | 62°F 2012 | -18°F 2009 | 20% | 11% |
| Jan 5 | 37°F | 17°F | 63°F 2012 | -20°F 2017 | 20% | 11% |
| Jan 6 | 37°F | 18°F | 56°F 2012 | -24°F 2017 | 20% | 11% |
| Jan 7 | 37°F | 18°F | 53°F 2001 | -6°F 2017 | 20% | 10% |
| Jan 8 | 37°F | 18°F | 54°F 2015 | -7°F 2024 | 20% | 10% |
| Jan 9 | 37°F | 18°F | 52°F 2015 | 1°F 2007 | 20% | 10% |
| Jan 10 | 38°F | 18°F | 54°F 1999 | 0°F 2009 | 20% | 10% |
| Jan 11 | 38°F | 18°F | 59°F 2000 | -11°F 2013 | 20% | 10% |
| Jan 12 | 38°F | 18°F | 55°F 2002 | -20°F 2013 | 20% | 10% |
| Jan 13 | 38°F | 18°F | 56°F 2000 | -23°F 2007 | 19% | 10% |
| Jan 14 | 38°F | 18°F | 56°F 2012 | -13°F 2007 | 19% | 10% |
| Jan 15 | 38°F | 18°F | 54°F 2018 | -20°F 2007 | 19% | 10% |
| Jan 16 | 38°F | 18°F | 56°F 2000 | -13°F 2007 | 19% | 10% |
| Jan 17 | 38°F | 18°F | 58°F 2011 | -13°F 2001 | 19% | 10% |
| Jan 18 | 38°F | 18°F | 57°F 2000 | -11°F 2013 | 19% | 10% |
| Jan 19 | 38°F | 18°F | 55°F 2003 | -9°F 2007 | 19% | 10% |
| Jan 20 | 38°F | 18°F | 56°F 2003 | -10°F 2013 | 20% | 10% |
| Jan 21 | 38°F | 18°F | 51°F 2025 | -7°F 2004 | 20% | 10% |
| Jan 22 | 38°F | 18°F | 53°F 2026 | -13°F 2004 | 20% | 10% |
| Jan 23 | 38°F | 18°F | 57°F 2003 | -13°F 2008 | 20% | 9% |
| Jan 24 | 38°F | 18°F | 51°F 2000 | -1°F 2007 | 20% | 9% |
| Jan 25 | 38°F | 18°F | 57°F 2015 | 3°F 2007 | 20% | 9% |
| Jan 26 | 38°F | 18°F | 59°F 2015 | -1°F 2004 | 20% | 9% |
| Jan 27 | 38°F | 18°F | 52°F 2011 | -10°F 1999 | 20% | 9% |
| Jan 28 | 38°F | 18°F | 59°F 2024 | -8°F 1999 | 20% | 9% |
| Jan 29 | 38°F | 18°F | 59°F 2024 | -23°F 2002 | 20% | 9% |
| Jan 30 | 38°F | 18°F | 59°F 2003 | -25°F 2002 | 20% | 9% |
| Jan 31 | 38°F | 18°F | 63°F 2003 | -15°F 2023 | 20% | 9% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- January 1
- sunrise 7:04 AM, sunset 4:31 PM
- January 31
- sunrise 6:52 AM, sunset 5:03 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00262708 (Eureka), public domain. Records: NOAA GHCN-Daily, station USW00003170, 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.