May weather in Newcastle, WY
The average temperature in Newcastle in May is 54.8°F (43.3°F–66.3°F). Average precipitation: 2.90 inches. Average snowfall is 0.6 inches.
May is a spring month in Newcastle, and is warmer than the annual average of 47.3°F. Daily temperatures swing about 23°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 14h 33m. For travel, May is a comfortable month to visit.
Avg High
66.3°F
Avg Low
43.3°F
Precipitation
2.90 in
Snow
0.6 in
May records in Newcastle
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 84.0°F (1918) | 15.1°F (1967) | 0.88 in (2008) |
| May 2 | 82.9°F (1957) | 10.9°F (1954) | 0.92 in (1928) |
| May 3 | 89.1°F (1918) | 15.1°F (2005) | 0.65 in (1981) |
| May 4 | 93.9°F (1918) | 19.9°F (2008) | 0.52 in (1981) |
| May 5 | 91.9°F (1918) | 25.0°F (1944) | 1.21 in (1964) |
| May 6 | 91.9°F (2000) | 23.0°F (1929) | 1.10 in (1969) |
| May 7 | 90.0°F (1934) | 26.1°F (1924) | 2.65 in (2024) |
| May 8 | 90.0°F (1934) | 19.9°F (2010) | 1.02 in (1970) |
| May 9 | 86.0°F (1962) | 21.9°F (2002) | 0.93 in (1986) |
| May 10 | 89.1°F (1961) | 21.0°F (1927) | 2.76 in (2011) |
| May 11 | 86.0°F (1940) | 19.0°F (1918) | 1.13 in (2000) |
| May 12 | 89.1°F (2025) | 17.1°F (1953) | 1.02 in (1991) |
| May 13 | 90.0°F (1941) | 25.0°F (1918) | 1.07 in (2022) |
| May 14 | 95.0°F (2001) | 25.0°F (2014) | 0.80 in (1962) |
| May 15 | 90.0°F (1936) | 30.9°F (1929) | 0.73 in (1952) |
| May 16 | 91.0°F (1934) | 28.9°F (1925) | 1.58 in (1991) |
| May 17 | 91.9°F (1934) | 24.1°F (1910) | 1.27 in (1955) |
| May 18 | 93.0°F (1934) | 27.0°F (1942) | 0.71 in (1979) |
| May 19 | 93.9°F (1992) | 26.1°F (1997) | 1.10 in (1938) |
| May 20 | 95.0°F (2009) | 21.9°F (1931) | 1.12 in (1945) |
| May 21 | 89.1°F (1992) | 24.1°F (1908) | 1.02 in (1952) |
| May 22 | 89.1°F (1980) | 28.0°F (2022) | 1.56 in (2011) |
| May 23 | 91.9°F (1926) | 30.0°F (1924) | 1.88 in (1933) |
| May 24 | 89.1°F (1985) | 27.0°F (2002) | 1.30 in (2008) |
| May 25 | 97.0°F (1934) | 28.0°F (2004) | 1.10 in (1907) |
| May 26 | 93.0°F (1934) | 26.1°F (1918) | 2.34 in (1929) |
| May 27 | 91.9°F (1934) | 25.0°F (1918) | 1.25 in (1978) |
| May 28 | 98.1°F (1934) | 26.1°F (1952) | 1.50 in (2018) |
| May 29 | 95.0°F (1934) | 28.0°F (1947) | 1.33 in (1929) |
| May 30 | 96.1°F (1939) | 30.0°F (1973) | 1.80 in (2018) |
| May 31 | 91.9°F (1925) | 32.0°F (1974) | 2.32 in (2013) |