Weather on August 31
Nampa, ID
55 Years of Data
Avg High
86°F
Avg Low
51°F
Warmest
2007
78°F avg
Coldest
1977
55°F avg
About This Date
August 31st in Nampa, ID typically brings warm summer weather, with average highs around 86°F and lows near 51°F — a 35°F daily swing. Over 44 years of records, the warmest August 31st was in 2007 (78°F average), while the coldest was 1977 (55°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 31st dates historically, with the wettest August 31st recording 0.76" of rain.
Planning for August 31st in Nampa, ID? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2014 | 91° | 51° | 71° | — | — |
| 2013 | 88° | 60° | 74° | — | — |
| 2012 | 78° | 50° | 64° | — | — |
| 2011 | 92° | 58° | 75° | — | — |
| 2010 | 73° | 44° | 59° | — | — |
| 2009 | 89° | 57° | 73° | — | — |
| 2008 | 89° | 55° | 72° | — | — |
| 2007warmest | 97° | 60° | 78° | — | — |
| 2006 | 73° | 42° | 58° | — | — |
| 2005 | 76° | 47° | 61° | — | — |
| 2004 | 93° | 56° | 74° | — | — |
| 2003 | 89° | 54° | 71° | — | — |
| 2002 | 81° | 56° | 68° | — | — |
| 2001 | 96° | 54° | 75° | — | — |
| 2000 | 86° | 50° | 68° | — | — |
| 1999 | 90° | 41° | 65° | — | — |
| 1998 | 93° | 52° | 72° | — | — |
| 1997 | 92° | 52° | 72° | — | — |
| 1996 | 90° | 57° | 73° | — | — |
| 1995 | 86° | 46° | 66° | — | — |
| 1994 | 83° | 46° | 64° | — | — |
| 1993 | 80° | 41° | 61° | — | — |
| 1992 | 88° | 60° | 74° | — | — |
| 1991 | 92° | 48° | 70° | — | — |
| 1990 | 84° | 40° | 62° | — | — |
| 1989 | 75° | 47° | 61° | — | — |
| 1988 | 89° | 49° | 69° | — | — |
| 1987 | 91° | 51° | 71° | — | — |
| 1986 | 85° | 50° | 67° | — | — |
| 1985 | 86° | 49° | 67° | — | — |
| 1984 | 85° | 53° | 69° | — | — |
| 1983 | 92° | 53° | 72° | — | — |
| 1982 | 79° | 48° | 63° | — | — |
| 1981 | 84° | 45° | 64° | — | — |
| 1980 | 78° | 44° | 61° | — | — |
| 1979 | 70° | 52° | 61° | 0.76" | — |
| 1978 | — | 50° | — | — | — |
| 1977coldest | 73° | 37° | 55° | — | — |
| 1976 | 96° | 52° | 74° | — | — |
| 1975 | 81° | 48° | 64° | — | — |
| 1974 | 96° | 55° | 76° | — | — |
| 1973 | 86° | 55° | 71° | — | — |
| 1972 | 88° | 52° | 70° | — | — |
| 1971 | 90° | 60° | 75° | — | — |
44 years of data from NAMPA SUGAR FACTORY