January weather in St. Johns, AZ
The average temperature in St. Johns in January is 34.4°F (19.4°F–49.5°F). Average precipitation: 0.43 inches.
January is a winter month in St. Johns, and is cooler than the annual average of 54.1°F. Daily temperatures swing about 30.1°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 9h 56m. For travel, January is cool.
Avg High
49.5°F
Avg Low
19.4°F
Precipitation
0.43 in
Daylight
9h 56m
January records in St. Johns
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 60.1°F (2003) | -21.8°F (2011) | 0.16 in (2019) |
| January 2 | 70.0°F (2006) | -11.7°F (2011) | 0.07 in (2015) |
| January 3 | 68.0°F (2025) | -12.8°F (2019) | 0.17 in (2005) |
| January 4 | 70.0°F (2003) | -5.8°F (2019) | 0.16 in (2005) |
| January 5 | 73.9°F (2003) | 0.1°F (2011) | 0.05 in (2007) |
| January 6 | 64.9°F (2018) | 6.3°F (2011) | 0.04 in (2017) |
| January 7 | 78.1°F (2003) | 1.9°F (2000) | 0.11 in (2026) |
| January 8 | 73.9°F (2003) | 6.1°F (2000) | 0.09 in (2016) |
| January 9 | 66.9°F (2018) | 10.2°F (2010) | 0.07 in (2003) |
| January 10 | 63.0°F (2005) | 6.1°F (2026) | 0.28 in (2018) |
| January 11 | 64.9°F (2000) | 8.1°F (2026) | 0.16 in (2005) |
| January 12 | 63.0°F (2000) | 4.1°F (2025) | 0.29 in (2015) |
| January 13 | 63.0°F (2006) | 4.1°F (2013) | 0.17 in (2015) |
| January 14 | 70.0°F (2006) | 5.2°F (2013) | 0.01 in (2017) |
| January 15 | 69.1°F (2000) | -1.8°F (2013) | 0.15 in (2016) |
| January 16 | 72.0°F (2000) | 3.2°F (2013) | 0.23 in (2020) |
| January 17 | 68.0°F (2000) | 2.1°F (2008) | 0.01 in (2002) |
| January 18 | 70.0°F (2000) | 6.3°F (2008) | 0.17 in (2010) |
| January 19 | 68.0°F (2012) | 5.2°F (2008) | 0.13 in (2021) |
| January 20 | 63.0°F (2000) | 5.2°F (2025) | 0.15 in (2010) |
| January 21 | 60.1°F (2005) | -7.8°F (2025) | 0.29 in (2020) |
| January 22 | 68.0°F (2005) | 2.1°F (2025) | 0.46 in (2010) |
| January 23 | 66.9°F (2016) | 1.2°F (2025) | 0.28 in (2001) |
| January 24 | 66.0°F (2003) | -0.8°F (2025) | 0.24 in (2026) |
| January 25 | 66.0°F (2000) | 8.1°F (2002) | 0.06 in (2013) |
| January 26 | 61.0°F (2003) | 10.0°F (2004) | 0.16 in (2005) |
| January 27 | 69.1°F (2003) | 1.2°F (2021) | 0.17 in (2010) |
| January 28 | 64.0°F (2003) | 9.1°F (2017) | 0.44 in (2008) |
| January 29 | 64.9°F (2016) | 7.0°F (2000) | 0.26 in (2015) |
| January 30 | 64.9°F (2014) | 11.1°F (2009) | 0.37 in (2015) |
| January 31 | 66.0°F (2003) | -2.0°F (2002) | 0.15 in (2011) |