May weather in Westfield, MA
The average temperature in Westfield in May is 58.9°F (46.2°F–71.6°F). Average precipitation: 3.71 inches.
May is a spring month in Westfield, and is warmer than the annual average of 49.4°F. Daily temperatures swing about 25.4°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 23m. For travel, May is a comfortable month to visit.
Avg High
71.6°F
Avg Low
46.2°F
Precipitation
3.71 in
Daylight
14h 23m
May records in Westfield
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 88.0°F (2001) | 25.2°F (2008) | 1.13 in (2014) |
| May 2 | 93.0°F (2001) | 30.9°F (2005) | 1.16 in (2003) |
| May 3 | 91.9°F (2001) | 18.1°F (2018) | 1.10 in (1949) |
| May 4 | 91.9°F (2001) | 31.1°F (2017) | 0.81 in (2021) |
| May 5 | 91.9°F (1949) | 28.0°F (2005) | 1.40 in (2025) |
| May 6 | 87.1°F (2000) | 31.1°F (2020) | 0.80 in (2025) |
| May 7 | 93.0°F (2000) | 26.1°F (2001) | 1.32 in (2009) |
| May 8 | 91.0°F (2000) | 28.0°F (2001) | 1.12 in (2024) |
| May 9 | 93.9°F (2000) | 33.1°F (2017) | 1.11 in (2025) |
| May 10 | 91.9°F (2015) | 29.1°F (2016) | 0.98 in (2000) |
| May 11 | 89.1°F (2015) | 27.1°F (2010) | 1.10 in (1951) |
| May 12 | 89.1°F (2001) | 35.1°F (2010) | 2.32 in (2006) |
| May 13 | 84.0°F (2012) | 28.0°F (2005) | 1.83 in (2002) |
| May 14 | 84.9°F (2022) | 30.0°F (1951) | 0.61 in (2006) |
| May 15 | 90.0°F (2004) | 31.1°F (2013) | 0.70 in (2018) |
| May 16 | 89.1°F (1951) | 30.0°F (2000) | 1.45 in (2007) |
| May 17 | 93.9°F (2017) | 35.1°F (2016) | 1.32 in (2014) |
| May 18 | 95.0°F (2017) | 2.1°F (2008) | 1.12 in (2002) |
| May 19 | 90.0°F (2017) | 28.9°F (2002) | 1.54 in (1999) |
| May 20 | 86.0°F (2012) | 27.0°F (2002) | 1.81 in (2023) |
| May 21 | 91.9°F (2013) | 30.0°F (2002) | 0.22 in (2012) |
| May 22 | 93.0°F (2022) | 32.0°F (2002) | 1.14 in (2001) |
| May 23 | 88.0°F (2021) | 34.0°F (2002) | 1.73 in (2013) |
| May 24 | 90.0°F (2007) | 37.0°F (2015) | 1.01 in (1951) |
| May 25 | 93.0°F (2007) | 39.0°F (2006) | 1.11 in (1950) |
| May 26 | 98.1°F (2010) | 36.0°F (1949) | 1.59 in (2003) |
| May 27 | 90.0°F (2011) | 39.0°F (2013) | 0.93 in (2024) |
| May 28 | 91.9°F (2016) | 39.0°F (2013) | 1.20 in (2021) |
| May 29 | 93.0°F (2012) | 39.0°F (2008) | 1.32 in (2013) |
| May 30 | 91.9°F (2013) | 37.9°F (1949) | 0.81 in (2024) |
| May 31 | 96.1°F (2013) | 39.9°F (2001) | 2.36 in (2025) |