December weather in Stanley, IA
The average temperature in Stanley in December is 22.4°F (14.0°F–30.9°F). Average precipitation: 1.59 inches.
December is a winter month in Stanley, and is cooler than the annual average of 45.4°F. Daily temperatures swing about 16.9°F between overnight low and afternoon high. Daylight averages about 8h 53m. For travel, December is cold.
Avg High
30.9°F
Avg Low
14.0°F
Precipitation
1.59 in
Daylight
8h 53m
December records in Stanley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 51.1°F (2021) | 1.0°F (2025) | 0.16 in (2015) |
| December 2 | 55.0°F (2009) | 3.9°F (2008) | 1.44 in (2007) |
| December 3 | 57.9°F (2012) | 3.0°F (2006) | 0.54 in (2011) |
| December 4 | 66.0°F (2012) | -15.0°F (2025) | 0.93 in (2011) |
| December 5 | 62.1°F (2017) | -15.0°F (2025) | 0.09 in (2007) |
| December 6 | 50.0°F (2019) | -2.0°F (2007) | 0.00 in (2006) |
| December 7 | 45.0°F (2012) | -8.0°F (2010) | 0.14 in (2007) |
| December 8 | 59.0°F (2024) | -6.0°F (2025) | 0.13 in (2014) |
| December 9 | 55.9°F (2024) | -5.1°F (2010) | 1.47 in (2009) |
| December 10 | 52.0°F (2020) | -13.0°F (2013) | 0.12 in (2012) |
| December 11 | 54.0°F (2020) | -11.9°F (2009) | 0.21 in (2007) |
| December 12 | 45.0°F (2006) | -9.9°F (2009) | 0.55 in (2010) |
| December 13 | 57.0°F (2015) | -6.0°F (2010) | 1.51 in (2015) |
| December 14 | 57.9°F (2015) | -8.0°F (2025) | 1.62 in (2015) |
| December 15 | 57.0°F (2021) | -9.0°F (2025) | 0.47 in (2012) |
| December 16 | 69.1°F (2021) | -15.0°F (2009) | 0.51 in (2021) |
| December 17 | 51.1°F (2006) | -6.0°F (2009) | 0.19 in (2008) |
| December 18 | 39.0°F (2006) | -2.9°F (2008) | 0.09 in (2025) |
| December 19 | 48.0°F (2011) | -13.0°F (2010) | 0.29 in (2008) |
| December 20 | 48.9°F (2018) | -11.9°F (2010) | 1.04 in (2012) |
| December 21 | 46.0°F (2019) | -11.9°F (2008) | 1.28 in (2006) |
| December 22 | 46.9°F (2019) | -13.0°F (2008) | 0.22 in (2009) |
| December 23 | 50.0°F (2019) | -15.0°F (2008) | 0.56 in (2007) |
| December 24 | 50.0°F (2023) | -22.0°F (2013) | 0.70 in (2015) |
| December 25 | 54.0°F (2023) | -22.0°F (2013) | 1.08 in (2009) |
| December 26 | 57.0°F (2019) | -9.0°F (2017) | 0.52 in (2023) |
| December 27 | 46.0°F (2008) | -16.1°F (2017) | 1.27 in (2018) |
| December 28 | 46.9°F (2018) | -17.0°F (2017) | 0.92 in (2024) |
| December 29 | 53.1°F (2019) | -2.0°F (2009) | 0.74 in (2015) |
| December 30 | 50.0°F (2019) | -18.0°F (2013) | 0.49 in (2011) |
| December 31 | 46.9°F (2006) | -20.0°F (2013) | 0.41 in (2006) |