May weather in Sinai, SD
The average temperature in Sinai in May is 57.6°F (46.1°F–69.2°F). Average precipitation: 3.97 inches.
May is a spring month in Sinai, and is warmer than the annual average of 44.7°F. Daily temperatures swing about 23.1°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 35m. For travel, May is a comfortable month to visit.
Avg High
69.2°F
Avg Low
46.1°F
Precipitation
3.97 in
Daylight
14h 35m
May records in Sinai
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 84.9°F (2012) | 25.0°F (2005) | 1.40 in (1972) |
| May 2 | 79.0°F (2000) | 24.1°F (2002) | 0.84 in (1944) |
| May 3 | 82.9°F (2000) | 19.0°F (2005) | 1.00 in (1944) |
| May 4 | 87.1°F (2000) | 32.0°F (1996) | 1.64 in (2007) |
| May 5 | 91.9°F (2004) | 35.1°F (2006) | 1.12 in (2012) |
| May 6 | 90.0°F (2004) | 30.0°F (2010) | 1.69 in (2007) |
| May 7 | 80.1°F (2005) | 32.0°F (1996) | 1.66 in (2001) |
| May 8 | 81.0°F (2004) | 33.1°F (2010) | 2.75 in (2002) |
| May 9 | 91.9°F (2004) | 28.9°F (1997) | 1.32 in (1995) |
| May 10 | 89.1°F (2004) | 30.9°F (2002) | 1.27 in (1953) |
| May 11 | 84.0°F (2004) | 28.9°F (2008) | 1.46 in (2008) |
| May 12 | 81.0°F (1993) | 32.0°F (1997) | 1.33 in (1947) |
| May 13 | 86.0°F (2007) | 26.1°F (1997) | 1.89 in (1958) |
| May 14 | 93.0°F (2001) | 28.0°F (2004) | 1.32 in (1990) |
| May 15 | 90.0°F (2001) | 26.1°F (1997) | 1.59 in (1998) |
| May 16 | 82.9°F (1994) | 30.9°F (2009) | 1.30 in (1962) |
| May 17 | 91.0°F (2012) | 30.9°F (2002) | 1.51 in (2004) |
| May 18 | 91.0°F (2012) | 30.0°F (2002) | 1.88 in (2000) |
| May 19 | 95.0°F (2009) | 30.9°F (2002) | 2.01 in (1996) |
| May 20 | 87.1°F (2009) | 30.0°F (1997) | 1.11 in (1957) |
| May 21 | 82.9°F (2005) | 37.0°F (1993) | 1.03 in (1958) |
| May 22 | 84.9°F (2012) | 37.9°F (2001) | 1.70 in (1972) |
| May 23 | 87.1°F (1994) | 37.9°F (2001) | 1.28 in (1996) |
| May 24 | 88.0°F (2010) | 28.9°F (2002) | 0.72 in (1986) |
| May 25 | 86.0°F (2010) | 37.0°F (2002) | 1.61 in (1961) |
| May 26 | 82.0°F (2006) | 39.0°F (2011) | 0.92 in (2009) |
| May 27 | 87.1°F (2006) | 37.0°F (2007) | 1.29 in (1978) |
| May 28 | 93.9°F (2006) | 39.9°F (1996) | 1.31 in (2011) |
| May 29 | 91.9°F (2006) | 42.1°F (2005) | 1.78 in (1991) |
| May 30 | 93.0°F (2002) | 37.0°F (2012) | 1.60 in (1979) |
| May 31 | 84.9°F (2009) | 37.9°F (1993) | 1.87 in (1982) |