Weather on May 12
Boise, ID
55 Years of Data
Avg High
72°F
Avg Low
45°F
Warmest
2013
78°F avg
Coldest
1985
41°F avg
About This Date
May 12th in Boise, ID typically brings pleasant spring weather, with average highs around 72°F and lows near 45°F — a 27°F daily swing. Over 55 years of records, the warmest May 12th was in 2013 (78°F average), while the coldest was 1985 (41°F) — a 37°F range across recorded history. Rain or other precipitation has occurred on about 18% of May 12th dates historically, with the wettest May 12th recording 0.91" of rain. The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for May 12th in Boise, ID? Great weather for outdoor activities.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 68° | 49° | 58° | — | — |
| 2024 | 84° | 52° | 68° | — | — |
| 2023 | 78° | 46° | 62° | — | — |
| 2022 | 63° | 34° | 48° | 0.43" | — |
| 2021 | 82° | 46° | 64° | — | — |
| 2020 | 67° | 51° | 59° | — | — |
| 2019 | 86° | 53° | 70° | — | — |
| 2018 | 66° | 45° | 55° | — | — |
| 2017 | 67° | 40° | 53° | 0.15" | — |
| 2016 | 84° | 51° | 68° | — | — |
| 2015 | 75° | 46° | 61° | 0.91" | — |
| 2014 | 66° | 38° | 52° | — | — |
| 2013warmest | 93° | 63° | 78° | — | — |
| 2012 | 75° | 41° | 58° | — | — |
| 2011 | 79° | 54° | 66° | — | — |
| 2010 | 69° | 44° | 57° | — | — |
| 2009 | 59° | 41° | 50° | — | — |
| 2008 | 62° | 38° | 50° | — | — |
| 2007 | 86° | 57° | 72° | — | — |
| 2006 | 74° | 49° | 61° | — | — |
| 2005 | 70° | 45° | 57° | — | — |
| 2004 | 58° | 43° | 50° | 0.48" | — |
| 2003 | 62° | 46° | 54° | 0.2" | — |
| 2002 | 77° | 41° | 59° | — | — |
| 2001 | 92° | 58° | 75° | — | — |
| 2000 | 60° | 32° | 46° | — | — |
| 1999 | 65° | 46° | 55° | — | — |
| 1998 | 63° | 49° | 56° | 0.15" | — |
| 1997 | 84° | 54° | 69° | — | — |
| 1996 | 83° | 53° | 68° | — | — |
| 1995 | 58° | 37° | 47° | — | — |
| 1994 | 80° | 57° | 69° | 0.05" | — |
| 1993 | 94° | 58° | 76° | — | — |
| 1992 | 75° | 31° | 53° | — | — |
| 1991 | 66° | 41° | 54° | 0.23" | — |
| 1990 | 63° | 42° | 52° | — | — |
| 1989 | 65° | 37° | 51° | — | — |
| 1988 | 93° | 59° | 76° | — | — |
| 1987 | 85° | 54° | 69° | — | — |
| 1986 | 63° | 36° | 49° | — | — |
| 1985coldest | 58° | 24° | 41° | — | — |
| 1984 | 72° | 53° | 62° | — | — |
| 1983 | 58° | 31° | 44° | — | — |
| 1982 | 66° | 40° | 53° | — | — |
| 1981 | 65° | 28° | 46° | — | — |
| 1980 | 70° | 38° | 54° | — | — |
| 1979 | 75° | 40° | 57° | — | — |
| 1978 | 69° | 37° | 53° | — | — |
| 1977 | 76° | 46° | 61° | — | — |
| 1976 | 75° | 34° | 54° | — | — |
| 1975 | 68° | 42° | 55° | — | — |
| 1974 | 56° | 38° | 47° | 0.15" | — |
| 1973 | 81° | 47° | 64° | — | — |
| 1972 | 75° | 39° | 57° | — | — |
| 1971 | 80° | 55° | 68° | 0.18" | — |
55 years of data from BOISE AIR TERMINAL