December weather in Merrill, IA
The average temperature in Merrill in December is 22.4°F (12.9°F–32.0°F). Average precipitation: 1.04 inches. Average snowfall is 6.0 inches.
December is a winter month in Merrill, and is cooler than the annual average of 46.9°F. Daily temperatures swing about 19.1°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 8h 52m. For travel, December is cold.
Avg High
32.0°F
Avg Low
12.9°F
Precipitation
1.04 in
Snow
6.0 in
December records in Merrill
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 68.0°F (1998) | -8.0°F (1897) | 0.65 in (2015) |
| December 2 | 63.0°F (2021) | -11.9°F (1919) | 1.40 in (1933) |
| December 3 | 64.0°F (1998) | -15.0°F (1919) | 1.30 in (1953) |
| December 4 | 60.1°F (2001) | -9.9°F (1898) | 0.45 in (2011) |
| December 5 | 62.1°F (1939) | -9.0°F (2005) | 0.50 in (1906) |
| December 6 | 66.0°F (1939) | -18.9°F (1972) | 0.45 in (1902) |
| December 7 | 64.9°F (1984) | -16.1°F (2011) | 1.05 in (1924) |
| December 8 | 59.0°F (1970) | -18.9°F (1976) | 0.60 in (1994) |
| December 9 | 64.9°F (1939) | -25.1°F (1958) | 0.78 in (1899) |
| December 10 | 61.0°F (1979) | -18.0°F (1917) | 0.84 in (1911) |
| December 11 | 57.9°F (1965) | -15.0°F (2000) | 1.50 in (2016) |
| December 12 | 68.0°F (1921) | -20.0°F (1932) | 0.60 in (2010) |
| December 13 | 62.1°F (1921) | -27.0°F (1917) | 1.00 in (2015) |
| December 14 | 57.0°F (1998) | -24.0°F (1901) | 0.81 in (2015) |
| December 15 | 61.0°F (1939) | -31.0°F (1901) | 0.66 in (2012) |
| December 16 | 64.9°F (2021) | -18.9°F (1914) | 0.70 in (2016) |
| December 17 | 63.0°F (1939) | -18.0°F (1922) | 1.20 in (2016) |
| December 18 | 57.0°F (1923) | -25.1°F (2016) | 0.24 in (1948) |
| December 19 | 59.0°F (1979) | -25.1°F (2016) | 0.75 in (2008) |
| December 20 | 57.9°F (1933) | -25.1°F (1961) | 2.15 in (1902) |
| December 21 | 61.0°F (1933) | -25.1°F (1989) | 0.60 in (1920) |
| December 22 | 55.9°F (1933) | -27.9°F (1989) | 0.90 in (1968) |
| December 23 | 55.9°F (1899) | -27.0°F (1989) | 0.65 in (1968) |
| December 24 | 53.1°F (2023) | -22.0°F (1983) | 0.60 in (2016) |
| December 25 | 57.0°F (2021) | -18.0°F (1983) | 0.93 in (1982) |
| December 26 | 54.0°F (1936) | -18.9°F (1914) | 1.10 in (2016) |
| December 27 | 53.1°F (1958) | -16.1°F (1924) | 1.32 in (2018) |
| December 28 | 52.0°F (2013) | -25.1°F (1924) | 0.93 in (1959) |
| December 29 | 59.0°F (2013) | -33.0°F (1917) | 0.86 in (2019) |
| December 30 | 57.0°F (1999) | -20.9°F (1961) | 0.92 in (1972) |
| December 31 | 62.1°F (2004) | -25.1°F (1968) | 0.59 in (1931) |