Julian Weather in January
Average highs run from 52°F on January 1 to 54°F on January 31, and lows from 38°F to 39°F. Normal precipitation for the month is 4.66 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
- 53°F
- Average low
- 39°F
- Precipitation
- 4.66 in
- Snowfall
- 1.1 in
- Record high
- 89°FJan 15, 2021
- Record low
- 16°FJan 17, 2007
- Chance of a freeze
- 90%
- Daylight
- 10 h 01 min to 10 h 36 min
- Cloud cover
- 42%
- Humidity
- 54%
- Dew point
- 33°F
- Wind
- 6.7 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 | 52°F | 38°F | 86°F 2012 | 25°F 2015 | 20% | 1% |
| Jan 2 | 52°F | 38°F | 86°F 2012 | 25°F 2015 | 20% | 1% |
| Jan 3 | 52°F | 39°F | 82°F 2012 | 24°F 2013 | 20% | 1% |
| Jan 4 | 52°F | 39°F | 86°F 2012 | 25°F 2019 | 20% | 1% |
| Jan 5 | 52°F | 39°F | 83°F 2012 | 23°F 2013 | 20% | 1% |
| Jan 6 | 52°F | 39°F | 84°F 2006 | 26°F 2024 | 20% | 1% |
| Jan 7 | 52°F | 39°F | 81°F 2020 | 27°F 1999 | 20% | 1% |
| Jan 8 | 52°F | 39°F | 82°F 2007 | 22°F 2024 | 20% | 1% |
| Jan 9 | 52°F | 39°F | 82°F 2007 | 24°F 2000 | 20% | 1% |
| Jan 10 | 53°F | 39°F | 81°F 2004 | 24°F 2024 | 20% | 1% |
| Jan 11 | 53°F | 39°F | 83°F 2009 | 24°F 2013 | 20% | 1% |
| Jan 12 | 53°F | 39°F | 82°F 2009 | 23°F 2013 | 19% | 1% |
| Jan 13 | 53°F | 39°F | 83°F 2000 | 21°F 2013 | 19% | 1% |
| Jan 14 | 53°F | 39°F | 86°F 2021 | 20°F 2007 | 19% | 1% |
| Jan 15 | 53°F | 39°F | 89°F 2021 | 24°F 2013 | 19% | 1% |
| Jan 16 | 53°F | 39°F | 88°F 2021 | 22°F 2007 | 19% | 1% |
| Jan 17 | 53°F | 39°F | 84°F 2021 | 16°F 2007 | 19% | 1% |
| Jan 18 | 53°F | 39°F | 83°F 2011 | 17°F 2007 | 19% | 1% |
| Jan 19 | 53°F | 39°F | 81°F 2009 | 23°F 2012 | 19% | 1% |
| Jan 20 | 53°F | 39°F | 80°F 2009 | 24°F 2002 | 19% | 1% |
| Jan 21 | 53°F | 39°F | 80°F 2014 | 22°F 2006 | 19% | 1% |
| Jan 22 | 53°F | 39°F | 82°F 2013 | 23°F 2007 | 19% | 1% |
| Jan 23 | 54°F | 39°F | 78°F 2013 | 23°F 2007 | 19% | 1% |
| Jan 24 | 54°F | 39°F | 78°F 2018 | 25°F 2011 | 19% | 1% |
| Jan 25 | 54°F | 39°F | 82°F 2003 | 26°F 2025 | 20% | 1% |
| Jan 26 | 54°F | 39°F | 82°F 2012 | 27°F 2002 | 20% | 1% |
| Jan 27 | 54°F | 39°F | 78°F 2003 | 25°F 2009 | 20% | 1% |
| Jan 28 | 54°F | 39°F | 79°F 2018 | 24°F 2009 | 20% | 1% |
| Jan 29 | 54°F | 39°F | 84°F 2018 | 27°F 1999 | 20% | 1% |
| Jan 30 | 54°F | 39°F | 84°F 2003 | 22°F 2002 | 21% | 1% |
| Jan 31 | 54°F | 39°F | 88°F 2003 | 21°F 2002 | 21% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- January 1
- sunrise 6:50 AM, sunset 4:51 PM
- January 31
- sunrise 6:42 AM, sunset 5:18 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00044412 (Julian Cdf), public domain. Records: NOAA GHCN-Daily, station USW00053120, 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.