May weather in Rock River, WY
The average temperature in Rock River in May is 49.1°F (33.3°F–64.8°F). Average precipitation: 1.74 inches. Average snowfall is 2.4 inches.
May is a spring month in Rock River, and is warmer than the annual average of 42.2°F. Daily temperatures swing about 31.5°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 21m. For travel, May is cool.
Avg High
64.8°F
Avg Low
33.3°F
Precipitation
1.74 in
Snow
2.4 in
May records in Rock River
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 77.0°F (1981) | 15.1°F (2005) | 0.46 in (2006) |
| May 2 | 77.0°F (1981) | 14.0°F (1954) | 0.30 in (1953) |
| May 3 | 78.1°F (1952) | 12.9°F (1954) | 1.30 in (1981) |
| May 4 | 80.1°F (2000) | 12.0°F (2008) | 0.26 in (1959) |
| May 5 | 82.0°F (2000) | 19.0°F (2010) | 0.88 in (1949) |
| May 6 | 81.0°F (2000) | 21.0°F (1965) | 0.48 in (2015) |
| May 7 | 79.0°F (1963) | 19.9°F (2010) | 0.50 in (1959) |
| May 8 | 78.1°F (1977) | 19.9°F (2010) | 0.70 in (1965) |
| May 9 | 79.0°F (1977) | 12.9°F (2002) | 0.30 in (1964) |
| May 10 | 78.1°F (2004) | 19.0°F (2006) | 0.48 in (2003) |
| May 11 | 79.0°F (2012) | 16.0°F (1965) | 1.25 in (2005) |
| May 12 | 82.0°F (1960) | 21.9°F (1964) | 0.41 in (2010) |
| May 13 | 82.0°F (1996) | 24.1°F (2000) | 0.88 in (1967) |
| May 14 | 82.0°F (1976) | 21.0°F (1967) | 0.65 in (1958) |
| May 15 | 82.9°F (1978) | 25.0°F (1962) | 1.13 in (1949) |
| May 16 | 82.9°F (1964) | 23.0°F (1976) | 2.15 in (1991) |
| May 17 | 82.0°F (1988) | 19.9°F (1955) | 2.19 in (2000) |
| May 18 | 81.0°F (1976) | 24.1°F (1971) | 0.55 in (1978) |
| May 19 | 82.0°F (1954) | 19.0°F (1966) | 0.77 in (2011) |
| May 20 | 87.1°F (1954) | 21.9°F (1963) | 0.36 in (1988) |
| May 21 | 82.0°F (1954) | 24.1°F (2001) | 0.54 in (1992) |
| May 22 | 82.0°F (2006) | 27.0°F (1977) | 0.56 in (1993) |
| May 23 | 84.0°F (2012) | 28.0°F (1966) | 0.55 in (1995) |
| May 24 | 81.0°F (1964) | 25.0°F (1964) | 0.41 in (2008) |
| May 25 | 82.0°F (1969) | 28.0°F (2002) | 0.56 in (2009) |
| May 26 | 84.9°F (1969) | 0.0°F (1996) | 0.55 in (1956) |
| May 27 | 87.1°F (1969) | 24.1°F (1950) | 1.25 in (1992) |
| May 28 | 86.0°F (2003) | 25.0°F (1954) | 1.01 in (1975) |
| May 29 | 86.0°F (2003) | 21.9°F (1954) | 0.53 in (1995) |
| May 30 | 87.1°F (2002) | 28.0°F (2006) | 0.73 in (2005) |
| May 31 | 90.0°F (2002) | 28.0°F (1975) | 0.30 in (1989) |