Weather on June 30
Boise, ID
55 Years of Data
Avg High
88°F
Avg Low
57°F
Warmest
2021
91°F avg
Coldest
1992
57°F avg
About This Date
June 30th in Boise, ID typically brings warm summer weather, with average highs around 88°F and lows near 57°F — a 31°F daily swing. Over 55 years of records, the warmest June 30th was in 2021 (91°F average), while the coldest was 1992 (57°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 11% of June 30th dates historically, with the wettest June 30th recording 1.47" of rain. The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
Planning for June 30th in Boise, ID? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
2.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 97° | 62° | 79° | — | — |
| 2024 | 86° | 67° | 76° | — | — |
| 2023 | 96° | 65° | 80° | — | — |
| 2022 | 93° | 58° | 75° | — | — |
| 2021warmest | 104° | 78° | 91° | — | — |
| 2020 | 74° | 51° | 62° | 0.28" | — |
| 2019 | 89° | 58° | 73° | — | — |
| 2018 | 82° | 53° | 68° | — | — |
| 2017 | 90° | 59° | 74° | — | — |
| 2016 | 97° | 69° | 83° | — | — |
| 2015 | 102° | 74° | 88° | — | — |
| 2014 | 84° | 50° | 67° | — | — |
| 2013 | 104° | 68° | 86° | — | — |
| 2012 | 97° | 57° | 77° | — | — |
| 2011 | 78° | 57° | 68° | — | — |
| 2010 | 85° | 57° | 71° | — | — |
| 2009 | 91° | 61° | 76° | — | — |
| 2008 | 100° | 73° | 87° | — | — |
| 2007 | 88° | 57° | 72° | — | — |
| 2006 | 88° | 59° | 73° | — | — |
| 2005 | 88° | 57° | 72° | — | — |
| 2004 | 88° | 56° | 72° | — | — |
| 2003 | 92° | 70° | 81° | — | — |
| 2002 | 87° | 59° | 73° | — | — |
| 2001 | 92° | 59° | 75° | — | — |
| 2000 | 98° | 64° | 81° | — | — |
| 1999 | 84° | 57° | 71° | — | — |
| 1998 | 91° | 60° | 76° | — | — |
| 1997 | 63° | 51° | 57° | 0.79" | — |
| 1996 | 90° | 56° | 73° | — | — |
| 1995 | 89° | 59° | 74° | — | — |
| 1994 | 97° | 57° | 77° | — | — |
| 1993 | 78° | 46° | 62° | — | — |
| 1992coldest | 65° | 49° | 57° | 1.47" | — |
| 1991 | 76° | 49° | 62° | — | — |
| 1990 | 101° | 60° | 80° | — | — |
| 1989 | 83° | 61° | 72° | — | — |
| 1988 | 82° | 38° | 60° | — | — |
| 1987 | 93° | 67° | 80° | — | — |
| 1986 | 84° | 49° | 66° | — | — |
| 1985 | 90° | 50° | 70° | — | — |
| 1984 | 75° | 49° | 62° | — | — |
| 1983 | 79° | 48° | 63° | — | — |
| 1982 | 80° | 55° | 68° | — | — |
| 1981 | 97° | 59° | 78° | 0.03" | — |
| 1980 | 79° | 60° | 69° | 0.03" | — |
| 1979 | 75° | 55° | 65° | — | — |
| 1978 | 84° | 58° | 71° | 0.43" | — |
| 1977 | 87° | 45° | 66° | — | — |
| 1976 | 89° | 52° | 70° | — | — |
| 1975 | 87° | 50° | 69° | — | — |
| 1974 | 96° | 56° | 76° | — | — |
| 1973 | 81° | 55° | 68° | — | — |
| 1972 | 92° | 54° | 73° | — | — |
| 1971 | 81° | 50° | 65° | — | — |
55 years of data from BOISE AIR TERMINAL