May weather in Island Lake, IL
The average temperature in Island Lake in May is 58.8°F (47.2°F–70.4°F). Average precipitation: 4.47 inches.
May is a spring month in Island Lake, and is warmer than the annual average of 48.6°F. Daily temperatures swing about 23.2°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 24m. For travel, May is a comfortable month to visit.
Avg High
70.4°F
Avg Low
47.2°F
Precipitation
4.47 in
Daylight
14h 24m
May records in Island Lake
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 84.9°F (2001) | 30.9°F (1994) | 0.96 in (1997) |
| May 2 | 89.1°F (2018) | 30.9°F (2005) | 0.93 in (1983) |
| May 3 | 90.0°F (2018) | 26.1°F (2004) | 0.66 in (1979) |
| May 4 | 84.0°F (2001) | 28.9°F (2002) | 0.41 in (1984) |
| May 5 | 82.9°F (2000) | 32.0°F (2005) | 0.71 in (1977) |
| May 6 | 87.1°F (2018) | 30.9°F (1994) | 1.18 in (1976) |
| May 7 | 84.9°F (2000) | 30.9°F (2017) | 1.63 in (2012) |
| May 8 | 88.0°F (2023) | 30.0°F (2017) | 0.95 in (1998) |
| May 9 | 87.1°F (2014) | 26.1°F (2020) | 1.90 in (2019) |
| May 10 | 86.0°F (2004) | 30.9°F (2017) | 1.66 in (1996) |
| May 11 | 91.0°F (2022) | 30.0°F (2021) | 1.32 in (2001) |
| May 12 | 93.0°F (2022) | 28.0°F (2021) | 2.80 in (2011) |
| May 13 | 93.9°F (2022) | 28.9°F (1996) | 2.40 in (2010) |
| May 14 | 91.9°F (2022) | 34.0°F (1996) | 1.42 in (2024) |
| May 15 | 89.1°F (2007) | 30.9°F (2016) | 1.63 in (2020) |
| May 16 | 91.0°F (2025) | 33.1°F (1997) | 0.54 in (1986) |
| May 17 | 87.1°F (2001) | 33.1°F (2009) | 1.52 in (1977) |
| May 18 | 88.0°F (1996) | 30.9°F (2002) | 2.84 in (2004) |
| May 19 | 91.0°F (1996) | 34.0°F (1994) | 2.75 in (2000) |
| May 20 | 89.1°F (1998) | 35.1°F (2006) | 2.10 in (1996) |
| May 21 | 89.1°F (2012) | 27.0°F (2002) | 1.90 in (1996) |
| May 22 | 88.0°F (2024) | 33.1°F (1997) | 1.57 in (2004) |
| May 23 | 89.1°F (2021) | 36.0°F (2006) | 1.07 in (2004) |
| May 24 | 89.1°F (2010) | 35.1°F (2013) | 1.68 in (2020) |
| May 25 | 91.0°F (2010) | 39.9°F (1999) | 1.72 in (1997) |
| May 26 | 91.0°F (2018) | 35.1°F (2023) | 1.90 in (2022) |
| May 27 | 93.0°F (2018) | 32.0°F (1994) | 1.34 in (2009) |
| May 28 | 99.0°F (2018) | 37.0°F (1994) | 0.73 in (1995) |
| May 29 | 93.9°F (2018) | 34.0°F (2021) | 0.88 in (1996) |
| May 30 | 90.0°F (2006) | 32.0°F (2021) | 0.61 in (2011) |
| May 31 | 89.1°F (2010) | 37.0°F (1996) | 1.74 in (2004) |