Weather on May 21
Nampa, ID
55 Years of Data
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.
| 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° | — | — |
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.