May weather in Walnut Creek, CA
The average temperature in Walnut Creek in May is 65.5°F (53.1°F–78.0°F). Average precipitation: 0.61 inches.
May is a spring month in Walnut Creek, and is warmer than the annual average of 62.4°F. Daily temperatures swing about 24.9°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 14h 3m. For travel, May is one of the best months of the year to visit.
Avg High
78.0°F
Avg Low
53.1°F
Precipitation
0.61 in
Daylight
14h 3m
May records in Walnut Creek
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 93.0°F (2014) | 45.0°F (2008) | 0.48 in (1995) |
| May 2 | 91.9°F (2014) | 48.0°F (2010) | 0.45 in (2009) |
| May 3 | 91.0°F (2004) | 46.9°F (2007) | 0.05 in (1993) |
| May 4 | 91.0°F (2004) | 46.0°F (2002) | 0.50 in (1998) |
| May 5 | 91.9°F (2011) | 46.0°F (2003) | 0.40 in (1998) |
| May 6 | 91.0°F (2011) | 46.0°F (2010) | 0.46 in (1994) |
| May 7 | 93.9°F (2001) | 46.9°F (2003) | 0.82 in (1994) |
| May 8 | 95.0°F (2001) | 46.9°F (1999) | 0.20 in (2005) |
| May 9 | 91.9°F (2007) | 44.1°F (2003) | 0.20 in (2005) |
| May 10 | 93.0°F (2001) | 46.9°F (2003) | 0.30 in (2005) |
| May 11 | 95.0°F (2001) | 42.1°F (2010) | 0.06 in (1998) |
| May 12 | 91.9°F (1996) | 46.0°F (1993) | 0.24 in (1998) |
| May 13 | 91.9°F (1996) | 41.0°F (1999) | 0.20 in (1995) |
| May 14 | 95.0°F (2014) | 48.0°F (1999) | 0.09 in (2015) |
| May 15 | 96.1°F (2008) | 45.0°F (2011) | 0.68 in (1996) |
| May 16 | 98.1°F (2008) | 46.9°F (2011) | 1.16 in (1996) |
| May 17 | 98.1°F (1997) | 44.1°F (1998) | 0.16 in (2011) |
| May 18 | 99.0°F (1997) | 48.0°F (1998) | 0.27 in (2011) |
| May 19 | 96.1°F (1997) | 48.9°F (2011) | 0.40 in (2002) |
| May 20 | 93.0°F (2001) | 46.9°F (1998) | 0.30 in (2002) |
| May 21 | 99.0°F (2001) | 48.0°F (1998) | 0.37 in (2006) |
| May 22 | 99.0°F (2001) | 46.0°F (2002) | 0.25 in (2006) |
| May 23 | 93.0°F (2017) | 46.9°F (2002) | 0.42 in (1997) |
| May 24 | 89.1°F (2001) | 42.1°F (1999) | 0.23 in (1993) |
| May 25 | 90.0°F (2014) | 50.0°F (2009) | 0.06 in (2011) |
| May 26 | 90.0°F (2014) | 48.0°F (2011) | 0.13 in (2010) |
| May 27 | 90.0°F (2003) | 48.9°F (2010) | 0.33 in (2010) |
| May 28 | 95.0°F (2003) | 46.0°F (2010) | 0.65 in (1998) |
| May 29 | 93.0°F (2018) | 48.0°F (2011) | 0.33 in (1998) |
| May 30 | 98.1°F (2001) | 50.0°F (1998) | 0.03 in (2011) |
| May 31 | 100.9°F (2001) | 52.0°F (1996) | 0.24 in (1993) |