Weather on December 20
Nampa, ID
55 Years of Data
Avg High
36°F
Avg Low
20°F
Warmest
1981
44°F avg
Coldest
1985
6°F avg
About This Date
December 20th in Nampa, ID typically brings cold winter weather, with average highs around 36°F and lows near 20°F. Over 44 years of records, the warmest December 20th was in 1981 (44°F average), while the coldest was 1985 (6°F) — a 38°F range across recorded history. Precipitation has occurred on 30% of recorded December 20th dates, with snow falling 7% of the time (heaviest snowfall: 1.5").
Planning for December 20th in Nampa, ID? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2014 | 45° | 36° | 40° | 0.64" | — |
| 2013 | 33° | 12° | 23° | — | — |
| 2012 | 37° | 19° | 28° | — | — |
| 2011 | 46° | 16° | 31° | — | — |
| 2010 | 37° | 25° | 31° | 1.07" | 1" |
| 2009 | 38° | 27° | 32° | — | — |
| 2008 | 35° | 15° | 25° | — | — |
| 2007 | 45° | 36° | 40° | 1.04" | — |
| 2006 | 33° | 13° | 23° | — | — |
| 2005 | 33° | 25° | 29° | 0.41" | 1.5" |
| 2004 | 37° | 30° | 34° | — | — |
| 2003 | 48° | 25° | 36° | — | — |
| 2002 | 40° | 25° | 32° | — | — |
| 2001 | 43° | 35° | 39° | — | — |
| 2000 | 36° | 22° | 29° | — | — |
| 1999 | 45° | 30° | 37° | — | — |
| 1998 | 24° | 8° | 16° | — | — |
| 1997 | 37° | 23° | 30° | — | — |
| 1996 | 32° | 21° | 27° | 0.15" | 0.3" |
| 1995 | 39° | 19° | 29° | — | — |
| 1994 | 45° | 28° | 36° | — | — |
| 1993 | 42° | 16° | 29° | — | — |
| 1992 | 29° | 6° | 17° | 0.03" | — |
| 1991 | 40° | 18° | 29° | — | — |
| 1990 | 29° | 4° | 16° | 0.48" | — |
| 1989 | 53° | 14° | 34° | — | — |
| 1988 | 31° | 19° | 25° | 0.1" | — |
| 1987 | 35° | 18° | 26° | — | — |
| 1986 | 28° | 24° | 26° | — | — |
| 1985coldest | 13° | -1° | 6° | — | — |
| 1984 | 18° | -1° | 9° | 0.03" | — |
| 1983 | 30° | 7° | 18° | 0.18" | — |
| 1982 | 43° | 31° | 37° | — | — |
| 1981warmest | 49° | 39° | 44° | 0.94" | — |
| 1980 | 22° | 21° | 21° | — | — |
| 1979 | 39° | 22° | 30° | — | — |
| 1978 | 35° | 17° | 26° | — | — |
| 1977 | 39° | 15° | 27° | — | — |
| 1976 | 40° | 9° | 24° | — | — |
| 1975 | 22° | 18° | 20° | — | — |
| 1974 | 43° | 33° | 38° | 0.76" | — |
| 1973 | 42° | 32° | 37° | — | — |
| 1972 | 40° | 28° | 34° | 0.03" | — |
| 1971 | 32° | 18° | 25° | — | — |
44 years of data from NAMPA SUGAR FACTORY