Weather on March 31
Boise, ID
55 Years of Data
Avg High
59°F
Avg Low
35°F
Warmest
2012
63°F avg
Coldest
1999
35°F avg
About This Date
March 31st in Boise, ID typically brings cool spring weather, with average highs around 59°F and lows near 35°F. Over 56 years of records, the warmest March 31st was in 2012 (63°F average), while the coldest was 1999 (35°F) — a 28°F range across recorded history. Precipitation has occurred on 25% of recorded March 31st dates, with snow falling 5% of the time (heaviest snowfall: 5.1"). Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for March 31st in Boise, ID? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 61° | 40° | 50° | 0.28" | — |
| 2025 | 50° | 34° | 42° | 0.69" | 0.2" |
| 2024 | 60° | 35° | 48° | — | — |
| 2023 | 51° | 37° | 44° | — | — |
| 2022 | 53° | 32° | 43° | — | — |
| 2021 | 60° | 29° | 45° | — | — |
| 2020 | 53° | 37° | 45° | 1.12" | — |
| 2019 | 61° | 36° | 48° | — | — |
| 2018 | 61° | 43° | 52° | — | — |
| 2017 | 61° | 40° | 50° | — | — |
| 2016 | 68° | 37° | 53° | — | — |
| 2015 | 68° | 41° | 55° | — | — |
| 2014 | 56° | 37° | 46° | — | — |
| 2013 | 73° | 41° | 57° | — | — |
| 2012warmest | 77° | 49° | 63° | — | — |
| 2011 | 69° | 49° | 59° | — | — |
| 2010 | 50° | 33° | 42° | — | — |
| 2009 | 48° | 29° | 38° | 0.23" | — |
| 2008 | 45° | 26° | 35° | — | — |
| 2007 | 62° | 41° | 52° | — | — |
| 2006 | 55° | 42° | 49° | 0.81" | — |
| 2005 | 54° | 26° | 40° | — | — |
| 2004 | 55° | 41° | 48° | — | — |
| 2003 | 72° | 51° | 61° | — | — |
| 2002 | 70° | 36° | 53° | — | — |
| 2001 | 58° | 34° | 46° | 0.2" | — |
| 2000 | 62° | 28° | 45° | — | — |
| 1999coldest | 39° | 31° | 35° | 0.51" | 5.1" |
| 1998 | 59° | 36° | 47° | — | — |
| 1997 | 50° | 32° | 41° | — | — |
| 1996 | 67° | 41° | 54° | — | — |
| 1995 | 67° | 34° | 50° | — | — |
| 1994 | 64° | 45° | 54° | — | — |
| 1993 | 63° | 34° | 48° | — | — |
| 1992 | 75° | 37° | 56° | — | — |
| 1991 | 74° | 40° | 57° | — | — |
| 1990 | 70° | 35° | 52° | — | — |
| 1989 | 54° | 37° | 45° | 1.17" | — |
| 1988 | 53° | 22° | 37° | — | — |
| 1987 | 67° | 31° | 49° | — | — |
| 1986 | 55° | 26° | 41° | — | — |
| 1985 | 59° | 40° | 49° | 0.15" | — |
| 1984 | 54° | 35° | 44° | — | — |
| 1983 | 53° | 34° | 43° | — | — |
| 1982 | 56° | 33° | 44° | 0.08" | 0.1" |
| 1981 | 58° | 35° | 46° | — | — |
| 1980 | 48° | 27° | 37° | — | — |
| 1979 | 48° | 24° | 36° | — | — |
| 1978 | 66° | 44° | 55° | 0.36" | — |
| 1977 | 49° | 25° | 37° | 0.33" | — |
| 1976 | 66° | 40° | 53° | 0.03" | — |
| 1975 | 47° | 29° | 38° | — | — |
| 1974 | 53° | 30° | 42° | — | — |
| 1973 | 52° | 40° | 46° | 0.05" | — |
| 1972 | 64° | 34° | 49° | — | — |
| 1971 | 48° | 32° | 40° | — | — |
56 years of data from BOISE AIR TERMINAL