Weather on April 9
Boise, ID
55 Years of Data
Avg High
59°F
Avg Low
37°F
Warmest
1996
63°F avg
Coldest
1999
36°F avg
About This Date
April 9th in Boise, ID typically brings cool spring weather, with average highs around 59°F and lows near 37°F. Over 56 years of records, the warmest April 9th was in 1996 (63°F average), while the coldest was 1999 (36°F) — a 27°F range across recorded history. Precipitation has occurred on 27% of recorded April 9th dates, with snow falling 2% of the time. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for April 9th in Boise, ID? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 73° | 42° | 58° | — | — |
| 2025 | 67° | 41° | 54° | — | — |
| 2024 | 66° | 40° | 53° | — | — |
| 2023 | 73° | 42° | 58° | — | — |
| 2022 | 51° | 32° | 42° | — | — |
| 2021 | 62° | 28° | 45° | — | — |
| 2020 | 71° | 39° | 55° | — | — |
| 2019 | 55° | 43° | 49° | 0.1" | — |
| 2018 | 62° | 34° | 48° | — | — |
| 2017 | 52° | 29° | 41° | — | — |
| 2016 | 78° | 48° | 63° | — | — |
| 2015 | 61° | 33° | 47° | — | — |
| 2014 | 70° | 44° | 57° | — | — |
| 2013 | 62° | 37° | 50° | — | — |
| 2012 | 71° | 44° | 58° | — | — |
| 2011 | 54° | 37° | 45° | 0.03" | — |
| 2010 | 48° | 25° | 36° | — | — |
| 2009 | 59° | 40° | 49° | — | — |
| 2008 | 51° | 33° | 42° | 0.25" | — |
| 2007 | 55° | 38° | 46° | 0.18" | — |
| 2006 | 54° | 37° | 45° | — | — |
| 2005 | 56° | 36° | 46° | — | — |
| 2004 | 67° | 40° | 53° | — | — |
| 2003 | 70° | 42° | 56° | — | — |
| 2002 | 61° | 46° | 53° | 0.38" | — |
| 2001 | 50° | 26° | 38° | — | — |
| 2000 | 58° | 45° | 51° | 0.64" | — |
| 1999coldest | 45° | 28° | 36° | — | — |
| 1998 | 59° | 42° | 51° | 0.05" | — |
| 1997 | 61° | 31° | 46° | — | — |
| 1996warmest | 74° | 52° | 63° | — | — |
| 1995 | 50° | 34° | 42° | 0.03" | — |
| 1994 | 50° | 42° | 46° | 0.64" | — |
| 1993 | 55° | 37° | 46° | — | — |
| 1992 | 61° | 45° | 53° | 0.28" | — |
| 1991 | 54° | 35° | 44° | 0.46" | — |
| 1990 | 63° | 30° | 46° | — | — |
| 1989 | 59° | 33° | 46° | — | — |
| 1988 | 57° | 28° | 43° | — | — |
| 1987 | 58° | 23° | 40° | — | — |
| 1986 | 64° | 40° | 52° | — | — |
| 1985 | 74° | 44° | 59° | — | — |
| 1984 | 46° | 31° | 38° | — | — |
| 1983 | 56° | 41° | 48° | — | — |
| 1982 | 54° | 32° | 43° | — | — |
| 1981 | 52° | 33° | 42° | — | — |
| 1980 | 56° | 38° | 47° | 0.03" | — |
| 1979 | 52° | 33° | 42° | 1.19" | — |
| 1978 | 62° | 36° | 49° | — | — |
| 1977 | 59° | 38° | 48° | — | — |
| 1976 | 59° | 44° | 52° | — | — |
| 1975 | 48° | 35° | 42° | 0.25" | 0.3" |
| 1974 | 59° | 40° | 49° | 0.53" | — |
| 1973 | 63° | 41° | 52° | — | — |
| 1972 | 54° | 35° | 44° | — | — |
| 1971 | 68° | 45° | 56° | — | — |
56 years of data from BOISE AIR TERMINAL