May weather in Summit, NJ
The average temperature in Summit in May is 61.4°F (50.4°F–72.3°F). Average precipitation: 4.05 inches.
May is a spring month in Summit, and is warmer than the annual average of 53.3°F. Daily temperatures swing about 21.9°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 16m. For travel, May is a comfortable month to visit.
Avg High
72.3°F
Avg Low
50.4°F
Precipitation
4.05 in
Daylight
14h 16m
May records in Summit
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 91.9°F (2010) | 26.1°F (1931) | 4.02 in (2014) |
| May 2 | 93.0°F (2010) | 26.1°F (1939) | 2.26 in (1976) |
| May 3 | 91.9°F (2001) | 27.0°F (1941) | 2.22 in (1985) |
| May 4 | 93.0°F (2001) | 28.0°F (1941) | 1.67 in (1984) |
| May 5 | 95.0°F (2001) | 26.1°F (1974) | 1.14 in (1975) |
| May 6 | 90.0°F (1949) | 28.0°F (1954) | 1.85 in (1989) |
| May 7 | 91.9°F (1949) | 28.0°F (1954) | 1.72 in (1942) |
| May 8 | 93.0°F (1936) | 28.0°F (1974) | 1.82 in (2017) |
| May 9 | 93.9°F (2000) | 27.0°F (1946) | 1.35 in (1960) |
| May 10 | 91.0°F (2000) | 25.0°F (1986) | 1.35 in (1998) |
| May 11 | 91.0°F (1970) | 27.0°F (1947) | 1.68 in (1989) |
| May 12 | 91.9°F (1953) | 30.0°F (1947) | 2.66 in (1981) |
| May 13 | 91.0°F (2004) | 26.1°F (1938) | 1.96 in (1948) |
| May 14 | 90.0°F (2004) | 28.9°F (1939) | 1.98 in (2002) |
| May 15 | 87.1°F (2004) | 28.0°F (1936) | 2.23 in (2025) |
| May 16 | 91.0°F (2018) | 28.0°F (1935) | 0.92 in (1989) |
| May 17 | 90.0°F (1951) | 30.9°F (1984) | 2.19 in (1940) |
| May 18 | 181.9°F (1949) | 32.0°F (1983) | 1.60 in (2002) |
| May 19 | 95.0°F (2017) | 32.0°F (1941) | 1.45 in (2000) |
| May 20 | 97.0°F (1962) | 32.0°F (1935) | 1.88 in (1943) |
| May 21 | 93.9°F (1996) | 32.0°F (1936) | 1.21 in (1954) |
| May 22 | 95.0°F (2011) | 28.9°F (1936) | 1.47 in (1985) |
| May 23 | 93.0°F (1992) | 30.9°F (1932) | 1.30 in (1953) |
| May 24 | 93.0°F (1964) | 27.0°F (1935) | 2.23 in (1979) |
| May 25 | 93.9°F (1975) | 27.0°F (1956) | 2.42 in (1979) |
| May 26 | 93.0°F (1991) | 34.0°F (1935) | 2.01 in (1952) |
| May 27 | 96.1°F (2010) | 34.0°F (1967) | 1.28 in (1983) |
| May 28 | 96.1°F (2016) | 35.1°F (1994) | 1.70 in (1991) |
| May 29 | 93.0°F (2016) | 30.9°F (1936) | 4.46 in (1968) |
| May 30 | 95.0°F (1969) | 32.0°F (1949) | 3.32 in (1984) |
| May 31 | 95.0°F (1987) | 32.0°F (1936) | 1.90 in (1940) |