May weather in Crystal Lake, IA
The average temperature in Crystal Lake in May is 58.3°F (47.6°F–69.1°F). Average precipitation: 4.48 inches.
May is a spring month in Crystal Lake, and is warmer than the annual average of 45.5°F. Daily temperatures swing about 21.5°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 29m. For travel, May is a comfortable month to visit.
Avg High
69.1°F
Avg Low
47.6°F
Precipitation
4.48 in
Daylight
14h 29m
May records in Crystal Lake
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 90.0°F (1959) | 24.1°F (1909) | 1.66 in (1911) |
| May 2 | 91.0°F (1992) | 24.1°F (1908) | 1.90 in (2001) |
| May 3 | 93.0°F (1949) | 21.9°F (1909) | 1.78 in (1913) |
| May 4 | 90.0°F (1959) | 19.0°F (1907) | 1.10 in (1938) |
| May 5 | 90.0°F (1909) | 27.0°F (1944) | 2.48 in (2003) |
| May 6 | 97.0°F (1934) | 25.0°F (1907) | 1.33 in (2009) |
| May 7 | 91.0°F (1934) | 24.1°F (1906) | 1.85 in (2005) |
| May 8 | 93.9°F (1934) | 28.0°F (1947) | 1.09 in (1938) |
| May 9 | 89.1°F (1911) | 19.9°F (1923) | 2.43 in (1918) |
| May 10 | 89.1°F (1911) | 25.0°F (1909) | 3.06 in (1982) |
| May 11 | 96.1°F (2011) | 25.0°F (1946) | 3.00 in (1982) |
| May 12 | 88.0°F (1900) | 28.9°F (1946) | 2.08 in (1999) |
| May 13 | 93.9°F (1940) | 27.0°F (1918) | 1.74 in (1970) |
| May 14 | 93.9°F (1932) | 30.0°F (1912) | 2.44 in (1905) |
| May 15 | 100.9°F (2013) | 28.0°F (1921) | 1.89 in (1909) |
| May 16 | 93.0°F (1936) | 27.0°F (1907) | 1.03 in (1976) |
| May 17 | 95.0°F (1934) | 30.0°F (1925) | 2.21 in (1902) |
| May 18 | 98.1°F (1934) | 30.9°F (1916) | 1.58 in (1944) |
| May 19 | 100.0°F (1934) | 30.0°F (1929) | 1.68 in (1913) |
| May 20 | 98.1°F (1934) | 27.0°F (1907) | 2.00 in (1941) |
| May 21 | 91.9°F (1948) | 32.0°F (1931) | 7.46 in (1959) |
| May 22 | 99.0°F (1925) | 25.0°F (1982) | 3.00 in (2004) |
| May 23 | 91.0°F (1964) | 30.0°F (1963) | 2.00 in (1915) |
| May 24 | 100.0°F (1939) | 32.0°F (1897) | 1.60 in (1914) |
| May 25 | 99.0°F (1967) | 30.9°F (1925) | 2.63 in (1926) |
| May 26 | 91.9°F (1931) | 30.9°F (1905) | 1.97 in (1921) |
| May 27 | 93.0°F (1900) | 30.9°F (1907) | 2.32 in (1941) |
| May 28 | 93.9°F (1934) | 30.9°F (1947) | 2.03 in (1995) |
| May 29 | 100.9°F (1934) | 30.0°F (1947) | 2.06 in (1957) |
| May 30 | 107.1°F (1934) | 33.1°F (1897) | 3.68 in (1941) |
| May 31 | 108.0°F (1934) | 27.0°F (1897) | 1.75 in (1959) |