Weather on June 20
Boise, ID
55 Years of Data
Avg High
83°F
Avg Low
53°F
Warmest
1988
86°F avg
Coldest
1995
52°F avg
About This Date
June 20th in Boise, ID typically brings warm summer weather, with average highs around 83°F and lows near 53°F — a 30°F daily swing. Over 55 years of records, the warmest June 20th was in 1988 (86°F average), while the coldest was 1995 (52°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 11% of June 20th dates historically, with the wettest June 20th recording 0.69" of rain. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for June 20th in Boise, ID? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 51° | 61° | 0.03" | — |
| 2024 | 89° | 59° | 74° | — | — |
| 2023 | 66° | 41° | 54° | — | — |
| 2022 | 74° | 45° | 59° | — | — |
| 2021 | 91° | 63° | 77° | — | — |
| 2020 | 86° | 60° | 73° | — | — |
| 2019 | 65° | 46° | 55° | 0.03" | — |
| 2018 | 88° | 58° | 73° | — | — |
| 2017 | 96° | 70° | 83° | — | — |
| 2016 | 95° | 57° | 76° | — | — |
| 2015 | 88° | 56° | 72° | — | — |
| 2014 | 87° | 58° | 72° | — | — |
| 2013 | 70° | 44° | 57° | — | — |
| 2012 | 82° | 44° | 63° | — | — |
| 2011 | 79° | 50° | 64° | — | — |
| 2010 | 72° | 52° | 62° | 0.69" | — |
| 2009 | 74° | 54° | 64° | — | — |
| 2008 | 97° | 59° | 78° | — | — |
| 2007 | 95° | 64° | 80° | — | — |
| 2006 | 79° | 51° | 65° | — | — |
| 2005 | 95° | 53° | 74° | — | — |
| 2004 | 80° | 52° | 66° | — | — |
| 2003 | 70° | 54° | 62° | 0.33" | — |
| 2002 | 87° | 49° | 68° | — | — |
| 2001 | 90° | 51° | 70° | — | — |
| 2000 | 79° | 46° | 62° | — | — |
| 1999 | 93° | 55° | 74° | — | — |
| 1998 | 75° | 44° | 60° | — | — |
| 1997 | 75° | 49° | 62° | — | — |
| 1996 | 75° | 48° | 62° | — | — |
| 1995coldest | 67° | 38° | 52° | — | — |
| 1994 | 98° | 56° | 77° | — | — |
| 1993 | 98° | 59° | 79° | — | — |
| 1992 | 90° | 58° | 74° | — | — |
| 1991 | 77° | 50° | 64° | — | — |
| 1990 | 87° | 51° | 69° | — | — |
| 1989 | 65° | 46° | 55° | — | — |
| 1988warmest | 97° | 76° | 86° | — | — |
| 1987 | 91° | 56° | 73° | — | — |
| 1986 | 80° | 46° | 63° | — | — |
| 1985 | 88° | 59° | 73° | — | — |
| 1984 | 77° | 52° | 64° | 0.53" | — |
| 1983 | 71° | 42° | 57° | — | — |
| 1982 | 93° | 58° | 75° | — | — |
| 1981 | 79° | 52° | 65° | — | — |
| 1980 | 88° | 64° | 76° | — | — |
| 1979 | 82° | 48° | 65° | — | — |
| 1978 | 83° | 49° | 66° | — | — |
| 1977 | 80° | 60° | 70° | 0.1" | — |
| 1976 | 85° | 58° | 71° | — | — |
| 1975 | 77° | 53° | 65° | — | — |
| 1974 | 80° | 61° | 70° | — | — |
| 1973 | 93° | 58° | 75° | — | — |
| 1972 | 87° | 51° | 69° | — | — |
| 1971 | 87° | 57° | 72° | — | — |
55 years of data from BOISE AIR TERMINAL