May weather in Merrill, WI
The average temperature in Merrill in May is 54.6°F (42.6°F–66.6°F). Average precipitation: 3.72 inches.
May is a spring month in Merrill, and is warmer than the annual average of 42.1°F. Daily temperatures swing about 24°F between overnight low and afternoon high. Expect about 14 days with precipitation. Daylight averages about 14h 40m. For travel, May is a comfortable month to visit.
Avg High
66.6°F
Avg Low
42.6°F
Precipitation
3.72 in
Snow
0.1 in
May records in Merrill
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 90.0°F (1952) | 21.0°F (1978) | 2.17 in (1973) |
| May 2 | 93.9°F (1959) | 19.9°F (1911) | 1.17 in (1973) |
| May 3 | 86.0°F (1949) | 21.0°F (2004) | 1.24 in (1954) |
| May 4 | 87.1°F (1952) | 21.0°F (1976) | 1.12 in (1928) |
| May 5 | 90.0°F (1934) | 18.0°F (1907) | 0.83 in (1964) |
| May 6 | 84.9°F (1926) | 15.1°F (1950) | 2.45 in (1936) |
| May 7 | 88.0°F (2016) | 21.9°F (1958) | 1.80 in (1999) |
| May 8 | 90.0°F (1934) | 21.9°F (1976) | 0.92 in (1961) |
| May 9 | 88.0°F (1936) | 19.9°F (1923) | 1.42 in (2019) |
| May 10 | 87.1°F (1922) | 21.0°F (1966) | 1.61 in (1990) |
| May 11 | 86.0°F (1922) | 19.0°F (1907) | 1.12 in (1920) |
| May 12 | 82.9°F (1915) | 24.1°F (1976) | 1.11 in (2014) |
| May 13 | 93.9°F (2022) | 19.9°F (1923) | 1.08 in (1906) |
| May 14 | 91.0°F (2022) | 25.0°F (1937) | 1.47 in (1968) |
| May 15 | 88.0°F (1991) | 26.1°F (1920) | 1.16 in (1957) |
| May 16 | 91.9°F (1911) | 24.1°F (1957) | 2.00 in (1976) |
| May 17 | 87.1°F (1962) | 23.0°F (1925) | 1.54 in (2017) |
| May 18 | 91.9°F (1934) | 24.1°F (1925) | 1.31 in (1938) |
| May 19 | 98.1°F (1911) | 23.0°F (1929) | 1.44 in (2019) |
| May 20 | 91.0°F (1934) | 26.1°F (2002) | 1.72 in (1951) |
| May 21 | 89.1°F (1970) | 27.0°F (1907) | 1.16 in (1915) |
| May 22 | 90.0°F (1925) | 26.1°F (1967) | 2.43 in (1970) |
| May 23 | 89.1°F (1921) | 25.0°F (1931) | 1.32 in (1946) |
| May 24 | 91.0°F (1928) | 30.0°F (1956) | 1.65 in (1971) |
| May 25 | 91.9°F (2010) | 28.0°F (1979) | 1.23 in (1939) |
| May 26 | 91.9°F (1914) | 27.0°F (1930) | 1.32 in (1978) |
| May 27 | 91.9°F (1919) | 28.0°F (1971) | 2.08 in (1941) |
| May 28 | 93.9°F (2018) | 30.0°F (1906) | 1.51 in (2009) |
| May 29 | 91.9°F (1934) | 28.9°F (1965) | 1.71 in (1943) |
| May 30 | 104.0°F (1934) | 30.0°F (1930) | 1.99 in (1942) |
| May 31 | 100.9°F (1934) | 30.0°F (1972) | 1.40 in (1943) |