May weather in Casa Grande, AZ
The average temperature in Casa Grande in May is 78.4°F (60.4°F–96.4°F). Average precipitation: 0.18 inches.
May is a spring month in Casa Grande, and is warmer than the annual average of 72.4°F. Daily temperatures swing about 36°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 13h 42m. For travel, May is hot.
Avg High
96.4°F
Avg Low
60.4°F
Precipitation
0.18 in
Daylight
13h 42m
May records in Casa Grande
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 102.9°F (1943) | 39.9°F (1942) | 0.20 in (1941) |
| May 2 | 105.1°F (1943) | 37.9°F (1954) | 0.66 in (1941) |
| May 3 | 109.9°F (1947) | 39.0°F (1955) | 0.10 in (1935) |
| May 4 | 113.0°F (1947) | 39.9°F (1930) | 0.30 in (1976) |
| May 5 | 109.9°F (1947) | 39.9°F (1905) | 0.43 in (1982) |
| May 6 | 109.9°F (1947) | 39.0°F (1933) | 0.14 in (2025) |
| May 7 | 109.0°F (1947) | 36.0°F (1975) | 0.07 in (1987) |
| May 8 | 109.0°F (1947) | 36.0°F (1975) | 0.02 in (1957) |
| May 9 | 107.1°F (1910) | 41.0°F (1905) | 0.06 in (1979) |
| May 10 | 109.0°F (1934) | 42.1°F (1905) | 0.77 in (1944) |
| May 11 | 111.9°F (1934) | 39.9°F (1922) | 0.22 in (1957) |
| May 12 | 109.9°F (1934) | 42.1°F (1922) | 0.14 in (1965) |
| May 13 | 109.9°F (1978) | 43.0°F (1942) | 0.11 in (1932) |
| May 14 | 109.9°F (1936) | 44.1°F (1933) | 0.29 in (1903) |
| May 15 | 109.9°F (1927) | 46.0°F (1942) | 0.57 in (1984) |
| May 16 | 109.9°F (1937) | 39.9°F (1955) | 0.03 in (1987) |
| May 17 | 111.0°F (1956) | 42.1°F (1982) | 0.00 in (1899) |
| May 18 | 109.0°F (1948) | 39.9°F (1977) | 0.02 in (2009) |
| May 19 | 113.0°F (1970) | 41.0°F (1977) | 0.31 in (1997) |
| May 20 | 109.9°F (2008) | 44.1°F (1921) | 0.49 in (1979) |
| May 21 | 111.0°F (2005) | 44.1°F (1974) | 0.50 in (1992) |
| May 22 | 111.0°F (2005) | 43.0°F (1975) | 0.40 in (2008) |
| May 23 | 109.9°F (1984) | 39.0°F (1971) | 0.75 in (2008) |
| May 24 | 111.0°F (1984) | 46.9°F (1912) | 0.10 in (1994) |
| May 25 | 109.9°F (1936) | 45.0°F (1975) | 0.30 in (1994) |
| May 26 | 109.9°F (1951) | 48.9°F (1926) | 0.06 in (1992) |
| May 27 | 115.0°F (1951) | 44.1°F (1929) | 0.15 in (1937) |
| May 28 | 113.0°F (1951) | 43.0°F (1929) | 0.68 in (2005) |
| May 29 | 111.9°F (1958) | 48.0°F (1953) | 0.34 in (1992) |
| May 30 | 120.0°F (1910) | 48.0°F (1945) | 0.29 in (1972) |
| May 31 | 120.0°F (1910) | 48.0°F (1930) | 0.05 in (1972) |