January weather in Upland, CA
The average temperature in Upland in January is 56.1°F (44.6°F–67.7°F). Average precipitation: 2.57 inches.
January is a winter month in Upland, and is cooler than the annual average of 66.8°F. Daily temperatures swing about 23.1°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 9h 58m. For travel, January is a comfortable month to visit.
Avg High
67.7°F
Avg Low
44.6°F
Precipitation
2.57 in
Daylight
9h 58m
January records in Upland
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 84.0°F (2012) | 31.1°F (2015) | 0.86 in (2026) |
| January 2 | 84.9°F (2025) | 30.2°F (2015) | 0.70 in (2006) |
| January 3 | 82.0°F (2012) | 33.1°F (2000) | 0.58 in (2005) |
| January 4 | 84.9°F (2012) | 34.0°F (2011) | 1.18 in (2008) |
| January 5 | 82.9°F (2006) | 34.0°F (2009) | 0.87 in (2023) |
| January 6 | 84.9°F (2015) | 37.0°F (2004) | 1.31 in (2008) |
| January 7 | 81.0°F (2015) | 37.9°F (2000) | 0.80 in (2005) |
| January 8 | 87.1°F (2007) | 33.1°F (2000) | 0.67 in (2005) |
| January 9 | 82.9°F (2007) | 36.0°F (2000) | 3.23 in (2005) |
| January 10 | 78.1°F (1999) | 37.0°F (2024) | 1.57 in (2005) |
| January 11 | 82.9°F (2009) | 32.0°F (2013) | 1.86 in (2001) |
| January 12 | 87.1°F (2009) | 28.2°F (2013) | 1.20 in (2017) |
| January 13 | 84.0°F (2018) | 29.1°F (2013) | 0.16 in (2010) |
| January 14 | 87.1°F (2021) | 25.2°F (2007) | 1.72 in (2023) |
| January 15 | 88.0°F (2021) | 31.1°F (2013) | 0.78 in (2023) |
| January 16 | 88.0°F (2021) | 34.0°F (2006) | 0.71 in (2019) |
| January 17 | 86.0°F (2014) | 32.0°F (2007) | 1.31 in (2019) |
| January 18 | 82.9°F (2014) | 35.1°F (2007) | 1.35 in (2010) |
| January 19 | 82.9°F (2005) | 34.0°F (2002) | 0.83 in (2010) |
| January 20 | 84.0°F (2014) | 33.1°F (2002) | 1.36 in (2017) |
| January 21 | 82.0°F (2013) | 33.1°F (2006) | 1.25 in (2010) |
| January 22 | 81.0°F (2013) | 36.0°F (2006) | 1.91 in (2017) |
| January 23 | 80.1°F (2013) | 36.0°F (2002) | 0.87 in (2017) |
| January 24 | 77.0°F (2007) | 35.1°F (2002) | 0.33 in (2013) |
| January 25 | 82.9°F (2003) | 35.1°F (2017) | 0.71 in (2000) |
| January 26 | 84.0°F (2003) | 34.0°F (2002) | 1.05 in (1999) |
| January 27 | 80.1°F (2024) | 37.0°F (2022) | 1.07 in (2008) |
| January 28 | 84.0°F (2018) | 36.0°F (1999) | 0.42 in (2008) |
| January 29 | 86.0°F (2018) | 34.0°F (2002) | 1.19 in (2021) |
| January 30 | 82.9°F (2003) | 32.0°F (2002) | 0.29 in (2011) |
| January 31 | 90.0°F (2003) | 30.9°F (2002) | 0.41 in (2016) |