May weather in Grand Lake, CO
The average temperature in Grand Lake in May is 43.4°F (27.7°F–59.2°F). Average precipitation: 1.59 inches. Average snowfall is 5.3 inches.
May is a spring month in Grand Lake, and is warmer than the annual average of 36.9°F. Daily temperatures swing about 31.5°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 14m. For travel, May is cool.
Avg High
59.2°F
Avg Low
27.7°F
Precipitation
1.59 in
Snow
5.3 in
May records in Grand Lake
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 72.0°F (1992) | 6.1°F (1970) | 0.80 in (1973) |
| May 2 | 75.0°F (1947) | 1.0°F (2013) | 0.61 in (1914) |
| May 3 | 73.0°F (1947) | 6.1°F (2008) | 0.68 in (2018) |
| May 4 | 75.0°F (1947) | 10.9°F (1973) | 0.65 in (2022) |
| May 5 | 75.0°F (2000) | 3.9°F (1973) | 1.07 in (1960) |
| May 6 | 75.0°F (2000) | 12.9°F (1982) | 1.57 in (1973) |
| May 7 | 73.0°F (2004) | 15.1°F (1968) | 1.97 in (1969) |
| May 8 | 71.1°F (1963) | 17.1°F (1984) | 0.58 in (1986) |
| May 9 | 71.1°F (1954) | 8.1°F (1978) | 0.98 in (1957) |
| May 10 | 72.0°F (1941) | 15.1°F (1943) | 0.56 in (1957) |
| May 11 | 73.0°F (1941) | 12.0°F (1999) | 0.36 in (1985) |
| May 12 | 75.9°F (1960) | 7.0°F (1988) | 0.64 in (1912) |
| May 13 | 75.0°F (1960) | 12.0°F (2014) | 0.71 in (1982) |
| May 14 | 77.0°F (1941) | 16.0°F (1967) | 1.10 in (1977) |
| May 15 | 73.9°F (1978) | 18.0°F (1967) | 0.80 in (1977) |
| May 16 | 75.0°F (1948) | 10.9°F (1975) | 0.86 in (1991) |
| May 17 | 78.1°F (1941) | 15.1°F (1955) | 0.97 in (1983) |
| May 18 | 75.9°F (2020) | 19.0°F (1983) | 0.73 in (2017) |
| May 19 | 75.0°F (2020) | 18.0°F (1968) | 1.15 in (1988) |
| May 20 | 79.0°F (2005) | 10.9°F (1943) | 0.75 in (1916) |
| May 21 | 79.0°F (2005) | 18.0°F (2001) | 1.00 in (1910) |
| May 22 | 77.0°F (2005) | 18.0°F (1974) | 0.65 in (1997) |
| May 23 | 77.0°F (2005) | 19.9°F (2002) | 0.68 in (2006) |
| May 24 | 81.0°F (1989) | 19.9°F (1966) | 0.70 in (1909) |
| May 25 | 75.0°F (1942) | 14.0°F (1997) | 0.50 in (1950) |
| May 26 | 80.1°F (1942) | 19.9°F (1975) | 0.65 in (1996) |
| May 27 | 78.1°F (1942) | 21.0°F (1943) | 0.75 in (1992) |
| May 28 | 79.0°F (2000) | 16.0°F (1954) | 1.07 in (1914) |
| May 29 | 82.0°F (2003) | 18.0°F (1955) | 0.90 in (1997) |
| May 30 | 80.1°F (2000) | 23.0°F (1955) | 0.84 in (1912) |
| May 31 | 81.0°F (2002) | 19.0°F (1964) | 0.31 in (1978) |