Weather on December 21
Nampa, ID
55 Years of Data
About This Date
December 21st in Nampa, ID typically brings cold winter weather, with average highs around 37°F and lows near 21°F. Over 44 years of records, the warmest December 21st was in 1972 (43°F average), while the coldest was 1990 (0°F) — a 43°F range across recorded history. Precipitation has occurred on 43% of recorded December 21st dates, with snow falling 7% of the time (heaviest snowfall: 8").
Planning for December 21st in Nampa, ID? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2014 | 46° | 40° | 43° | 1.22" | — |
| 2013 | 32° | 21° | 27° | 0.53" | — |
| 2012 | 43° | 27° | 35° | — | — |
| 2011 | 43° | 16° | 29° | — | — |
| 2010 | 40° | 24° | 32° | — | — |
| 2009 | 40° | 27° | 33° | 0.03" | — |
| 2008 | 29° | 20° | 24° | 0.38" | 2" |
| 2007 | 45° | 26° | 35° | — | — |
| 2006 | 34° | 15° | 24° | — | — |
| 2005 | 35° | 28° | 32° | 0.03" | — |
| 2004 | 39° | 22° | 30° | — | — |
| 2003 | 42° | 31° | 36° | 0.15" | — |
| 2002 | 45° | 31° | 38° | 0.25" | — |
| 2001 | 49° | 26° | 37° | — | — |
| 2000 | 33° | 22° | 27° | 0.03" | 0.2" |
| 1999 | 47° | 27° | 37° | — | — |
| 1998 | 20° | -4° | 8° | — | — |
| 1997 | 37° | 23° | 30° | — | — |
| 1996 | 30° | 22° | 26° | 1.45" | 8" |
| 1995 | 35° | 19° | 27° | — | — |
| 1994 | 42° | 28° | 35° | — | — |
| 1993 | 35° | 17° | 26° | — | — |
| 1992 | 35° | 16° | 25° | — | — |
| 1991 | 40° | 17° | 28° | — | — |
| 1990coldest | 9° | -10° | 0° | — | — |
| 1989 | 35° | 14° | 25° | — | — |
| 1988 | 39° | 22° | 30° | 0.2" | — |
| 1987 | 46° | 29° | 37° | 0.08" | — |
| 1986 | 29° | 23° | 26° | — | — |
| 1985 | 13° | 0° | 6° | 0.03" | — |
| 1984 | 10° | 1° | 6° | 0.15" | — |
| 1983 | 21° | 6° | 14° | 0.03" | — |
| 1982 | 49° | 34° | 41° | 0.43" | — |
| 1981 | 48° | 37° | 43° | 0.74" | — |
| 1980 | 25° | 20° | 22° | — | — |
| 1979 | 51° | 32° | 42° | 0.15" | — |
| 1978 | 42° | 24° | 33° | — | — |
| 1977 | 31° | 18° | 24° | — | — |
| 1976 | 33° | 7° | 20° | — | — |
| 1975 | 23° | 19° | 21° | — | — |
| 1974 | 53° | 33° | 43° | — | — |
| 1973 | 45° | 36° | 40° | 0.66" | — |
| 1972warmest | 51° | 35° | 43° | 0.08" | — |
| 1971 | 42° | 22° | 32° | — | — |
Nampa, ID Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Nampa, ID Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Nampa, ID Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Nampa, ID
Nampa, ID has no months that meet our "pleasant" threshold — every season has tradeoffs.