July weather in Newcastle, WY
The average temperature in Newcastle in July is 73.4°F (60.2°F–86.6°F). Average precipitation: 2.54 inches.
July is a summer month in Newcastle, and is warmer than the annual average of 47.3°F. Daily temperatures swing about 26.4°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 14h 58m. For travel, July is a comfortable month to visit.
Avg High
86.6°F
Avg Low
60.2°F
Precipitation
2.54 in
Daylight
14h 58m
July records in Newcastle
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 100.9°F (1990) | 44.1°F (1945) | 1.01 in (1929) |
| July 2 | 100.9°F (1990) | 42.1°F (1908) | 1.27 in (2009) |
| July 3 | 102.0°F (1936) | 37.0°F (1921) | 1.56 in (1958) |
| July 4 | 104.0°F (1936) | 37.0°F (1915) | 1.31 in (1909) |
| July 5 | 108.0°F (1936) | 39.9°F (1915) | 2.00 in (1992) |
| July 6 | 104.0°F (1973) | 41.0°F (1934) | 1.04 in (1928) |
| July 7 | 104.0°F (1981) | 37.9°F (1931) | 0.87 in (2017) |
| July 8 | 106.0°F (2007) | 42.1°F (1959) | 1.50 in (2013) |
| July 9 | 100.9°F (1921) | 41.0°F (1911) | 0.89 in (1965) |
| July 10 | 104.0°F (1939) | 43.0°F (2019) | 1.14 in (2001) |
| July 11 | 104.0°F (1939) | 43.0°F (1922) | 1.04 in (1937) |
| July 12 | 105.1°F (1954) | 37.9°F (1925) | 1.90 in (1932) |
| July 13 | 100.9°F (1914) | 43.0°F (1950) | 1.68 in (1929) |
| July 14 | 106.0°F (1931) | 44.1°F (1952) | 0.95 in (1907) |
| July 15 | 104.0°F (2000) | 37.9°F (1906) | 1.50 in (2018) |
| July 16 | 108.0°F (2006) | 44.1°F (1907) | 1.63 in (1954) |
| July 17 | 106.0°F (2005) | 43.0°F (1950) | 0.61 in (1925) |
| July 18 | 104.0°F (2007) | 46.0°F (1992) | 1.19 in (1967) |
| July 19 | 104.0°F (1936) | 46.0°F (1973) | 2.25 in (1997) |
| July 20 | 102.9°F (1934) | 48.9°F (1962) | 1.08 in (1973) |
| July 21 | 100.9°F (1934) | 46.0°F (1949) | 1.96 in (1978) |
| July 22 | 102.9°F (1920) | 44.1°F (1909) | 1.11 in (2012) |
| July 23 | 105.1°F (1936) | 45.0°F (1933) | 0.98 in (2025) |
| July 24 | 104.0°F (1931) | 37.9°F (1911) | 1.50 in (1923) |
| July 25 | 106.0°F (1931) | 44.1°F (1911) | 1.51 in (1981) |
| July 26 | 105.1°F (2024) | 44.1°F (1971) | 1.26 in (1942) |
| July 27 | 106.0°F (1931) | 45.0°F (1969) | 1.17 in (1979) |
| July 28 | 105.1°F (1933) | 45.0°F (1971) | 1.90 in (1922) |
| July 29 | 106.0°F (2006) | 42.1°F (1971) | 0.87 in (1997) |
| July 30 | 107.1°F (2006) | 39.0°F (1971) | 1.70 in (1915) |
| July 31 | 106.0°F (2006) | 39.9°F (1913) | 1.50 in (1919) |