Weather on January 18
Boise, ID
55 Years of Data
About This Date
January 18th in Boise, ID typically brings cold winter weather, with average highs around 39°F and lows near 25°F. Over 56 years of records, the warmest January 18th was in 1998 (48°F average), while the coldest was 1984 (-3°F) — a 51°F range across recorded history. Precipitation has occurred on 38% of recorded January 18th dates, with snow falling 14% of the time (heaviest snowfall: 4.8"). 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 January 18th in Boise, ID? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 31° | 26° | 28° | — | — |
| 2025 | 34° | 16° | 25° | — | — |
| 2024 | 35° | 20° | 28° | 0.02" | — |
| 2023 | 43° | 25° | 34° | — | — |
| 2022 | 32° | 28° | 30° | — | — |
| 2021 | 45° | 26° | 36° | — | — |
| 2020 | 42° | 30° | 36° | — | — |
| 2019 | 45° | 37° | 41° | 0.05" | — |
| 2018 | 58° | 39° | 48° | 0.24" | — |
| 2017 | 38° | 7° | 23° | 0.46" | 1.7" |
| 2016 | 47° | 34° | 40° | 0.07" | — |
| 2015 | 50° | 35° | 43° | 0.13" | — |
| 2014 | 32° | 22° | 27° | — | — |
| 2013 | 17° | 1° | 9° | — | — |
| 2012 | 40° | 32° | 36° | 0.82" | 4.8" |
| 2011 | 45° | 31° | 38° | 0.11" | — |
| 2010 | 53° | 42° | 48° | — | — |
| 2009 | 31° | 26° | 28° | — | — |
| 2008 | 36° | 19° | 27° | — | — |
| 2007 | 34° | 15° | 24° | — | — |
| 2006 | 44° | 34° | 39° | — | — |
| 2005 | 46° | 33° | 40° | 0.02" | — |
| 2004 | 28° | 21° | 25° | — | — |
| 2003 | 33° | 32° | 33° | — | — |
| 2002 | 35° | 23° | 29° | 0.01" | 0.2" |
| 2001 | 30° | 21° | 26° | — | — |
| 2000 | 39° | 29° | 34° | 0.12" | 0.8" |
| 1999 | 51° | 37° | 44° | 0.15" | — |
| 1998warmest | 57° | 39° | 48° | — | — |
| 1997 | 42° | 28° | 35° | — | — |
| 1996 | 33° | 24° | 29° | 0.08" | 0.8" |
| 1995 | 38° | 33° | 35° | 0.09" | — |
| 1994 | 29° | 22° | 25° | — | — |
| 1993 | 31° | 16° | 23° | 0.01" | 0.3" |
| 1992 | 40° | 23° | 31° | — | — |
| 1991 | 49° | 29° | 39° | — | — |
| 1990 | 41° | 21° | 31° | — | — |
| 1989 | 43° | 24° | 33° | — | — |
| 1988 | 24° | -1° | 12° | — | — |
| 1987 | 29° | 13° | 21° | — | — |
| 1986 | 41° | 33° | 37° | — | — |
| 1985 | 28° | 9° | 18° | — | — |
| 1984coldest | 7° | -13° | -3° | — | — |
| 1983 | 49° | 34° | 41° | — | — |
| 1982 | 40° | 31° | 35° | 0.01" | 0.2" |
| 1981 | 47° | 24° | 35° | — | — |
| 1980 | 40° | 25° | 32° | — | — |
| 1979 | 24° | 6° | 15° | 0.01" | 0.2" |
| 1978 | 46° | 31° | 38° | — | — |
| 1977 | 40° | 17° | 28° | — | — |
| 1976 | 45° | 30° | 37° | — | — |
| 1975 | 46° | 29° | 37° | — | — |
| 1974 | 50° | 38° | 44° | 0.14" | — |
| 1973 | 48° | 36° | 42° | 0.03" | — |
| 1972 | 43° | 38° | 40° | 0.49" | — |
| 1971 | 45° | 39° | 42° | 0.22" | — |
Boise, ID Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Boise, ID Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Boise, ID Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Boise, ID
Most pleasant months in Boise, ID: May, June, September, October.
What to expect on January 18th
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
January 18th outlook →