Weather on December 18
Nampa, ID
55 Years of Data
Avg High
39°F
Avg Low
21°F
Warmest
1999
42°F avg
Coldest
1985
10°F avg
About This Date
December 18th in Nampa, ID typically brings cold winter weather, with average highs around 39°F and lows near 21°F. Over 44 years of records, the warmest December 18th was in 1999 (42°F average), while the coldest was 1985 (10°F) — a 32°F range across recorded history. Precipitation has occurred on 18% of recorded December 18th dates, with snow falling 5% of the time.
Planning for December 18th in Nampa, ID? Bundle up with warm layers and protect extremities from the cold.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2014 | 47° | 29° | 38° | — | — |
| 2013 | 22° | 18° | 20° | — | — |
| 2012 | 48° | 27° | 37° | — | — |
| 2011 | 41° | 16° | 28° | — | — |
| 2010 | 38° | 21° | 29° | 0.05" | 0.3" |
| 2009 | 42° | 31° | 36° | 0.05" | — |
| 2008 | 24° | 6° | 15° | — | — |
| 2007 | 47° | 33° | 40° | — | — |
| 2006 | 36° | 13° | 24° | — | — |
| 2005 | 27° | 5° | 16° | — | — |
| 2004 | 38° | 28° | 33° | — | — |
| 2003 | 45° | 27° | 36° | — | — |
| 2002 | 45° | 23° | 34° | — | — |
| 2001 | 43° | 23° | 33° | — | — |
| 2000 | 43° | 19° | 31° | — | — |
| 1999warmest | 48° | 35° | 42° | 0.05" | — |
| 1998 | 39° | 19° | 29° | — | — |
| 1997 | 45° | 32° | 38° | 0.13" | — |
| 1996 | 34° | 16° | 25° | — | — |
| 1995 | 43° | 23° | 33° | — | — |
| 1994 | 46° | 36° | 41° | — | — |
| 1993 | 39° | 31° | 35° | — | — |
| 1992 | 35° | 18° | 26° | 0.08" | 1" |
| 1991 | 40° | 17° | 28° | — | — |
| 1990 | 45° | 17° | 31° | — | — |
| 1989 | 47° | 14° | 30° | — | — |
| 1988 | 46° | 15° | 31° | — | — |
| 1987 | 35° | 20° | 27° | — | — |
| 1986 | 28° | 22° | 25° | — | — |
| 1985coldest | 20° | 0° | 10° | — | — |
| 1984 | 24° | 4° | 14° | — | — |
| 1983 | 37° | 24° | 31° | — | — |
| 1982 | 50° | 27° | 38° | — | — |
| 1981 | 45° | 26° | 35° | — | — |
| 1980 | 27° | 17° | 22° | — | — |
| 1979 | 45° | 16° | 30° | — | — |
| 1978 | 34° | 26° | 30° | 0.3" | — |
| 1977 | 48° | 30° | 39° | 0.36" | — |
| 1976 | 37° | 12° | 25° | — | — |
| 1975 | 27° | 17° | 22° | — | — |
| 1974 | 45° | 25° | 35° | — | — |
| 1973 | 50° | 32° | 41° | — | — |
| 1972 | 38° | 29° | 33° | 0.03" | — |
| 1971 | 37° | 18° | 27° | — | — |
44 years of data from NAMPA SUGAR FACTORY