Weather on May 18
Nampa, ID
55 Years of Data
Avg High
74°F
Avg Low
45°F
Warmest
1973
77°F avg
Coldest
1994
45°F avg
About This Date
May 18th in Nampa, ID typically brings pleasant spring weather, with average highs around 74°F and lows near 45°F — a 29°F daily swing. Over 45 years of records, the warmest May 18th was in 1973 (77°F average), while the coldest was 1994 (45°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 27% of May 18th dates historically, with the wettest May 18th recording 1.04" of rain.
Planning for May 18th in Nampa, ID? Great weather for outdoor activities.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2015 | 76° | 46° | 61° | 0.25" | — |
| 2014 | 81° | 58° | 69° | — | — |
| 2013 | 70° | 48° | 59° | — | — |
| 2012 | 71° | 45° | 58° | — | — |
| 2011 | 63° | 33° | 48° | 0.03" | — |
| 2010 | 79° | 53° | 66° | 0.3" | — |
| 2009 | 90° | 46° | 68° | — | — |
| 2008 | 94° | 50° | 72° | — | — |
| 2007 | 89° | 55° | 72° | — | — |
| 2006 | 94° | 58° | 76° | — | — |
| 2005 | 63° | 49° | 56° | 0.05" | — |
| 2004 | 71° | 46° | 59° | 0.2" | — |
| 2003 | 60° | 34° | 47° | — | — |
| 2002 | 81° | 47° | 64° | — | — |
| 2001 | 73° | 47° | 60° | — | — |
| 2000 | 76° | 48° | 62° | — | — |
| 1999 | 77° | 45° | 61° | — | — |
| 1998 | 63° | 34° | 48° | 0.03" | — |
| 1997 | 73° | 46° | 60° | — | — |
| 1996 | 68° | 45° | 56° | 0.3" | — |
| 1995 | 76° | 42° | 59° | — | — |
| 1994coldest | 54° | 36° | 45° | 0.2" | — |
| 1993 | 85° | 52° | 68° | — | — |
| 1992 | 89° | 45° | 67° | — | — |
| 1991 | 56° | 37° | 46° | 1.04" | — |
| 1990 | 78° | 44° | 61° | — | — |
| 1989 | 71° | 37° | 54° | 0.41" | — |
| 1988 | 67° | 41° | 54° | — | — |
| 1987 | 79° | 53° | 66° | — | — |
| 1986 | 78° | 45° | 61° | — | — |
| 1985 | 80° | 44° | 62° | — | — |
| 1984 | 69° | 37° | 53° | — | — |
| 1983 | 71° | 45° | 58° | — | — |
| 1982 | 77° | 43° | 60° | 0.13" | — |
| 1981 | 72° | 46° | 59° | — | — |
| 1980 | 72° | 44° | 58° | — | — |
| 1979 | 75° | 44° | 60° | — | — |
| 1978 | 68° | 44° | 56° | — | — |
| 1977 | 60° | 42° | 51° | 0.05" | — |
| 1976 | 78° | 44° | 61° | — | — |
| 1975 | 83° | 50° | 66° | — | — |
| 1974 | 62° | 35° | 49° | — | — |
| 1973warmest | 93° | 61° | 77° | — | — |
| 1972 | 70° | 42° | 56° | — | — |
| 1971 | 68° | 36° | 52° | — | — |
45 years of data from NAMPA SUGAR FACTORY