Weather on May 22
Boise, ID
55 Years of Data
Avg High
73°F
Avg Low
47°F
Warmest
1988
77°F avg
Coldest
2010
41°F avg
About This Date
May 22nd in Boise, ID typically brings pleasant spring weather, with average highs around 73°F and lows near 47°F — a 26°F daily swing. Over 55 years of records, the warmest May 22nd was in 1988 (77°F average), while the coldest was 2010 (41°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 24% of May 22nd dates historically, with the wettest May 22nd recording 3.58" of rain. The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
Planning for May 22nd in Boise, ID? Great weather for outdoor activities.
Cooling Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 51° | 62° | — | — |
| 2024 | 65° | 43° | 54° | 0.86" | — |
| 2023 | 74° | 56° | 65° | — | — |
| 2022 | 68° | 43° | 55° | — | — |
| 2021 | 57° | 42° | 50° | 1.14" | — |
| 2020 | 57° | 42° | 50° | 0.03" | — |
| 2019 | 60° | 47° | 53° | 0.2" | — |
| 2018 | 80° | 55° | 68° | — | — |
| 2017 | 82° | 53° | 68° | — | — |
| 2016 | 61° | 46° | 53° | — | — |
| 2015 | 75° | 51° | 63° | — | — |
| 2014 | 84° | 48° | 66° | — | — |
| 2013 | 58° | 42° | 50° | — | — |
| 2012 | 72° | 54° | 63° | 0.1" | — |
| 2011 | 71° | 50° | 61° | — | — |
| 2010coldest | 46° | 35° | 41° | 3.58" | — |
| 2009 | 84° | 50° | 67° | — | — |
| 2008 | 65° | 43° | 54° | — | — |
| 2007 | 65° | 44° | 54° | — | — |
| 2006 | 71° | 52° | 61° | 0.08" | — |
| 2005 | 79° | 51° | 65° | — | — |
| 2004 | 69° | 50° | 60° | 0.05" | — |
| 2003 | 86° | 53° | 70° | — | — |
| 2002 | 62° | 43° | 52° | — | — |
| 2001 | 89° | 50° | 70° | — | — |
| 2000 | 84° | 58° | 71° | — | — |
| 1999 | 79° | 44° | 61° | — | — |
| 1998 | 52° | 43° | 47° | 0.25" | — |
| 1997 | 78° | 49° | 63° | — | — |
| 1996 | 60° | 40° | 50° | 0.18" | — |
| 1995 | 74° | 47° | 60° | — | — |
| 1994 | 73° | 50° | 62° | — | — |
| 1993 | 71° | 47° | 59° | — | — |
| 1992 | 82° | 37° | 60° | — | — |
| 1991 | 77° | 43° | 60° | — | — |
| 1990 | 76° | 55° | 65° | 0.48" | — |
| 1989 | 82° | 46° | 64° | — | — |
| 1988warmest | 93° | 60° | 77° | — | — |
| 1987 | 75° | 42° | 59° | — | — |
| 1986 | 58° | 33° | 45° | — | — |
| 1985 | 82° | 52° | 67° | — | — |
| 1984 | 74° | 39° | 56° | — | — |
| 1983 | 74° | 42° | 58° | — | — |
| 1982 | 78° | 54° | 66° | — | — |
| 1981 | 65° | 46° | 55° | — | — |
| 1980 | 79° | 48° | 63° | 0.74" | — |
| 1979 | 90° | 51° | 70° | — | — |
| 1978 | 63° | 47° | 55° | — | — |
| 1977 | 76° | 49° | 62° | 0.18" | — |
| 1976 | 80° | 47° | 63° | — | — |
| 1975 | 68° | 47° | 57° | — | — |
| 1974 | 77° | 46° | 62° | — | — |
| 1973 | 83° | 44° | 63° | — | — |
| 1972 | 64° | 48° | 56° | — | — |
| 1971 | 69° | 47° | 58° | — | — |
55 years of data from BOISE AIR TERMINAL