May weather in Riley, IN
The average temperature in Riley in May is 64.0°F (53.4°F–74.6°F). Average precipitation: 4.71 inches.
May is a spring month in Riley, and is warmer than the annual average of 53.5°F. Daily temperatures swing about 21.2°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 10m. For travel, May is a comfortable month to visit.
Avg High
74.6°F
Avg Low
53.4°F
Precipitation
4.71 in
Daylight
14h 10m
May records in Riley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 82.9°F (2001) | 32.0°F (2005) | 0.96 in (2009) |
| May 2 | 88.0°F (2012) | 34.0°F (2005) | 0.86 in (2011) |
| May 3 | 88.0°F (2012) | 30.0°F (2005) | 1.17 in (2022) |
| May 4 | 86.0°F (2001) | 28.9°F (2005) | 2.53 in (2017) |
| May 5 | 88.0°F (2012) | 33.1°F (2011) | 0.61 in (1999) |
| May 6 | 89.1°F (2012) | 37.0°F (2005) | 0.92 in (2002) |
| May 7 | 84.9°F (2015) | 35.1°F (2021) | 2.12 in (2023) |
| May 8 | 87.1°F (2004) | 31.1°F (2021) | 2.74 in (2002) |
| May 9 | 86.0°F (2004) | 30.2°F (2020) | 0.79 in (2021) |
| May 10 | 88.0°F (2022) | 34.0°F (2021) | 1.33 in (2006) |
| May 11 | 90.0°F (2022) | 36.0°F (2020) | 1.07 in (2008) |
| May 12 | 98.1°F (1998) | 34.0°F (2020) | 5.71 in (2002) |
| May 13 | 90.0°F (2018) | 32.0°F (2001) | 2.64 in (2002) |
| May 14 | 90.0°F (1998) | 39.0°F (2019) | 0.99 in (2008) |
| May 15 | 91.0°F (2001) | 39.0°F (2016) | 0.89 in (2015) |
| May 16 | 93.9°F (2001) | 39.0°F (2016) | 4.29 in (2001) |
| May 17 | 91.9°F (1962) | 39.0°F (2014) | 2.72 in (2021) |
| May 18 | 91.0°F (1962) | 37.0°F (2002) | 0.74 in (2004) |
| May 19 | 91.0°F (1998) | 33.1°F (2002) | 1.55 in (1998) |
| May 20 | 91.9°F (2012) | 37.9°F (2002) | 1.21 in (2025) |
| May 21 | 90.0°F (1962) | 34.0°F (2002) | 1.30 in (2010) |
| May 22 | 90.0°F (1962) | 37.0°F (2002) | 1.59 in (1998) |
| May 23 | 88.0°F (2007) | 41.0°F (2006) | 1.85 in (1998) |
| May 24 | 89.1°F (2010) | 39.0°F (2013) | 0.85 in (2006) |
| May 25 | 91.0°F (2012) | 43.0°F (2013) | 0.78 in (2009) |
| May 26 | 93.9°F (2012) | 44.1°F (2002) | 0.74 in (2022) |
| May 27 | 96.1°F (2012) | 44.1°F (1999) | 1.41 in (2000) |
| May 28 | 96.1°F (2012) | 45.0°F (2001) | 0.37 in (2017) |
| May 29 | 90.0°F (2006) | 43.0°F (2005) | 0.74 in (1998) |
| May 30 | 90.0°F (2011) | 41.0°F (2021) | 1.56 in (2004) |
| May 31 | 90.0°F (2011) | 46.9°F (2003) | 1.40 in (2002) |