May weather in Rio, IL
The average temperature in Rio in May is °F (°F–°F). Average precipitation: 4.83 inches.
May is a spring month in Rio, and is cooler than the annual average of 0°F. Expect about 11 days with precipitation. Daylight averages about 14h 18m.
Avg High
°F
Avg Low
°F
Precipitation
4.83 in
Daylight
14h 18m
May records in Rio
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | — | — | 3.70 in (2003) |
| May 2 | — | — | 1.61 in (1998) |
| May 3 | — | — | 0.65 in (2004) |
| May 4 | — | — | 0.35 in (2001) |
| May 5 | — | — | 1.43 in (2003) |
| May 6 | — | — | 0.68 in (1994) |
| May 7 | — | — | 1.28 in (2010) |
| May 8 | — | — | 1.77 in (1995) |
| May 9 | — | — | 1.75 in (2003) |
| May 10 | — | — | 1.54 in (1996) |
| May 11 | — | — | 2.00 in (2008) |
| May 12 | — | — | 2.37 in (2002) |
| May 13 | — | — | 2.21 in (2010) |
| May 14 | — | — | 0.45 in (2001) |
| May 15 | — | — | 0.97 in (2011) |
| May 16 | — | — | 2.44 in (2009) |
| May 17 | — | — | 1.25 in (2001) |
| May 18 | — | — | 0.58 in (2004) |
| May 19 | — | — | 0.39 in (2004) |
| May 20 | — | — | 0.45 in (2003) |
| May 21 | — | — | 0.79 in (2004) |
| May 22 | — | — | 0.12 in (2004) |
| May 23 | — | — | 1.52 in (1993) |
| May 24 | — | — | 1.18 in (1995) |
| May 25 | — | — | 1.31 in (2002) |
| May 26 | — | — | 3.56 in (2011) |
| May 27 | — | — | 1.26 in (2007) |
| May 28 | — | — | 1.02 in (1995) |
| May 29 | — | — | 0.24 in (1993) |
| May 30 | — | — | 3.07 in (2011) |
| May 31 | — | — | 1.78 in (2004) |