May weather in New London, CT
The average temperature in New London in May is 56.8°F (48.8°F–64.8°F). Average precipitation: 3.31 inches.
May is a spring month in New London, and is warmer than the annual average of 51.4°F. Daily temperatures swing about 16°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 19m. For travel, May is a comfortable month to visit.
Avg High
64.8°F
Avg Low
48.8°F
Precipitation
3.31 in
Daylight
14h 19m
May records in New London
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 73.9°F (2001) | 30.2°F (2008) | 0.71 in (2014) |
| May 2 | 82.0°F (2001) | 35.1°F (2005) | 0.59 in (2017) |
| May 3 | 79.0°F (2001) | 35.1°F (2000) | 0.90 in (2006) |
| May 4 | 82.0°F (2001) | 35.1°F (2005) | 0.68 in (2021) |
| May 5 | 78.1°F (2000) | 34.0°F (2003) | 1.50 in (2025) |
| May 6 | 79.0°F (2010) | 36.0°F (2007) | 0.50 in (2009) |
| May 7 | 79.0°F (2004) | 30.9°F (2001) | 1.02 in (2009) |
| May 8 | 81.0°F (2000) | 33.1°F (2001) | 1.27 in (2024) |
| May 9 | 77.0°F (2000) | 35.1°F (2020) | 2.36 in (2012) |
| May 10 | 75.0°F (2001) | 35.1°F (2020) | 0.56 in (2000) |
| May 11 | 80.1°F (2001) | 32.0°F (2010) | 0.33 in (2013) |
| May 12 | 82.0°F (2023) | 39.0°F (2010) | 3.26 in (2006) |
| May 13 | 82.9°F (2023) | 35.1°F (2005) | 1.39 in (2002) |
| May 14 | 70.0°F (2000) | 33.1°F (2020) | 0.47 in (2010) |
| May 15 | 73.9°F (2004) | 36.0°F (2013) | 0.58 in (2012) |
| May 16 | 75.9°F (2004) | 36.0°F (2002) | 0.67 in (2012) |
| May 17 | 77.0°F (2010) | 37.0°F (2003) | 2.26 in (2011) |
| May 18 | 84.9°F (2017) | 33.1°F (2023) | 1.56 in (2010) |
| May 19 | 84.9°F (2017) | 37.9°F (2002) | 0.81 in (2018) |
| May 20 | 78.1°F (2014) | 37.9°F (2002) | 1.73 in (2023) |
| May 21 | 78.1°F (2010) | 36.0°F (2020) | 0.17 in (2003) |
| May 22 | 78.1°F (2021) | 39.9°F (2002) | 1.74 in (2025) |
| May 23 | 88.0°F (2021) | 43.0°F (2006) | 1.23 in (2001) |
| May 24 | 79.0°F (2024) | 43.0°F (2020) | 0.78 in (2000) |
| May 25 | 82.9°F (2007) | 44.1°F (2006) | 0.69 in (2017) |
| May 26 | 86.0°F (2010) | 43.0°F (2013) | 2.50 in (2003) |
| May 27 | 82.9°F (2019) | 41.0°F (2013) | 0.37 in (2004) |
| May 28 | 78.1°F (2007) | 43.0°F (2013) | 1.13 in (2021) |
| May 29 | 80.1°F (2012) | 39.0°F (2014) | 0.82 in (2021) |
| May 30 | 84.0°F (2010) | 41.0°F (2014) | 1.08 in (2016) |
| May 31 | 93.0°F (2022) | 41.0°F (2014) | 0.53 in (2017) |