Weather on August 20
Nampa, ID
55 Years of Data
Avg High
90°F
Avg Low
54°F
Warmest
1977
82°F avg
Coldest
1980
58°F avg
About This Date
August 20th in Nampa, ID typically brings hot summer weather, with average highs around 90°F and lows near 54°F — a 36°F daily swing. Over 44 years of records, the warmest August 20th was in 1977 (82°F average), while the coldest was 1980 (58°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 11% of August 20th dates historically.
Planning for August 20th in Nampa, ID? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2014 | 95° | 61° | 78° | — | — |
| 2013 | 92° | 64° | 78° | — | — |
| 2012 | 91° | 60° | 76° | — | — |
| 2011 | 90° | 56° | 73° | — | — |
| 2010 | 94° | 53° | 73° | — | — |
| 2009 | 94° | 57° | 75° | — | — |
| 2008 | 90° | 58° | 74° | — | — |
| 2007 | 77° | 50° | 64° | 0.13" | — |
| 2006 | 92° | 53° | 72° | — | — |
| 2005 | 91° | 56° | 73° | — | — |
| 2004 | 93° | 62° | 78° | — | — |
| 2003 | 101° | 62° | 81° | — | — |
| 2002 | 88° | 54° | 71° | — | — |
| 2001 | 87° | 48° | 68° | — | — |
| 2000 | 89° | 53° | 71° | — | — |
| 1999 | 95° | 55° | 75° | — | — |
| 1998 | 92° | 50° | 71° | — | — |
| 1997 | 95° | 54° | 74° | — | — |
| 1996 | 89° | 49° | 69° | — | — |
| 1995 | 85° | 44° | 64° | — | — |
| 1994 | 95° | 55° | 75° | — | — |
| 1993 | 93° | 53° | 73° | — | — |
| 1992 | 101° | 59° | 80° | — | — |
| 1991 | 98° | 63° | 80° | — | — |
| 1990 | 84° | 58° | 71° | 0.3" | — |
| 1989 | 88° | 50° | 69° | — | — |
| 1988 | 82° | 41° | 62° | — | — |
| 1987 | 87° | 50° | 69° | — | — |
| 1986 | 94° | 55° | 74° | — | — |
| 1985 | 85° | 45° | 65° | — | — |
| 1984 | 85° | 56° | 70° | — | — |
| 1983 | 78° | 59° | 69° | — | — |
| 1982 | 94° | 60° | 77° | — | — |
| 1981 | 95° | 55° | 75° | 0.08" | — |
| 1980coldest | 73° | 42° | 58° | — | — |
| 1979 | 78° | 53° | 66° | — | — |
| 1978 | 88° | 45° | 66° | — | — |
| 1977warmest | 98° | 67° | 82° | — | — |
| 1976 | 90° | 52° | 71° | — | — |
| 1975 | 74° | 55° | 64° | 0.05" | — |
| 1974 | 77° | 47° | 62° | 0.05" | — |
| 1973 | 99° | 63° | 81° | — | — |
| 1972 | 89° | 53° | 71° | — | — |
| 1971 | 99° | 62° | 80° | — | — |
44 years of data from NAMPA SUGAR FACTORY