Weather on May 21
Nampa, ID
55 Years of Data
Avg High
74°F
Avg Low
44°F
Warmest
1980
71°F avg
Coldest
2005
52°F avg
About This Date
May 21st in Nampa, ID typically brings pleasant spring weather, with average highs around 74°F and lows near 44°F — a 30°F daily swing. Over 45 years of records, the warmest May 21st was in 1980 (71°F average), while the coldest was 2005 (52°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 24% of May 21st dates historically, with the wettest May 21st recording 2.39" of rain.
Planning for May 21st in Nampa, ID? Great weather for outdoor activities.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2015 | 73° | 48° | 61° | 0.25" | — |
| 2014 | 79° | 45° | 62° | — | — |
| 2013 | 77° | 45° | 61° | — | — |
| 2012 | 85° | 50° | 67° | — | — |
| 2011 | 78° | 46° | 62° | — | — |
| 2010 | 73° | 35° | 54° | — | — |
| 2009 | 70° | 38° | 54° | — | — |
| 2008 | 85° | 43° | 64° | 0.66" | — |
| 2007 | 73° | 45° | 59° | 0.08" | — |
| 2006 | 81° | 53° | 67° | — | — |
| 2005coldest | 68° | 35° | 52° | 0.08" | — |
| 2004 | 74° | 42° | 58° | 0.08" | — |
| 2003 | 76° | 45° | 60° | — | — |
| 2002 | 63° | 43° | 53° | — | — |
| 2001 | 70° | 40° | 55° | — | — |
| 2000 | 82° | 51° | 67° | — | — |
| 1999 | 81° | 48° | 64° | 0.08" | — |
| 1998 | 75° | 49° | 62° | — | — |
| 1997 | 75° | 46° | 61° | — | — |
| 1996 | 67° | 45° | 56° | — | — |
| 1995 | 81° | 42° | 61° | — | — |
| 1994 | 59° | 46° | 53° | 2.39" | — |
| 1993 | 82° | 56° | 69° | — | — |
| 1992 | 70° | 41° | 55° | — | — |
| 1991 | 66° | 40° | 53° | — | — |
| 1990 | 66° | 46° | 56° | 0.43" | — |
| 1989 | 77° | 36° | 56° | — | — |
| 1988 | 81° | 45° | 63° | — | — |
| 1987 | 67° | 40° | 53° | — | — |
| 1986 | 81° | 48° | 64° | — | — |
| 1985 | 70° | 49° | 59° | 1.12" | — |
| 1984 | 70° | 46° | 58° | — | — |
| 1983 | 78° | 40° | 59° | — | — |
| 1982 | 75° | 35° | 55° | — | — |
| 1981 | 67° | 49° | 58° | 0.51" | — |
| 1980warmest | 90° | 53° | 71° | — | — |
| 1979 | 82° | 42° | 62° | — | — |
| 1978 | 80° | 48° | 64° | — | — |
| 1977 | 72° | 35° | 53° | — | — |
| 1976 | 80° | 42° | 61° | — | — |
| 1975 | 73° | 43° | 58° | — | — |
| 1974 | 74° | 38° | 56° | — | — |
| 1973 | 74° | 39° | 56° | — | — |
| 1972 | 65° | 43° | 54° | 0.3" | — |
| 1971 | 67° | 44° | 55° | — | — |
45 years of data from NAMPA SUGAR FACTORY