Weather on October 18
West Yellowstone, MT
55 Years of Data
About This Date
October 18th in West Yellowstone, MT typically brings chilly fall weather, with average highs around 45°F and lows near 25°F. Over 55 years of records, the warmest October 18th was in 2022 (52°F average), while the coldest was 2006 (20°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 27% of October 18th dates historically, with the wettest October 18th recording 1.78" of rain. 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 October 18th in West Yellowstone, MT? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 32° | 17° | 25° | 0.25" | — |
| 2024 | 28° | 19° | 24° | 0.25" | — |
| 2023 | 58° | 30° | 44° | — | — |
| 2022warmest | 65° | 39° | 52° | — | — |
| 2021 | 56° | 30° | 43° | — | — |
| 2020 | 35° | 26° | 30° | 1.78" | — |
| 2019 | 27° | 14° | 21° | 0.25" | — |
| 2018 | 53° | 33° | 43° | — | — |
| 2017 | 46° | 30° | 38° | — | — |
| 2016 | 35° | 17° | 26° | 0.25" | — |
| 2015 | 47° | 37° | 42° | — | — |
| 2014 | 56° | 35° | 45° | 0.25" | — |
| 2013 | 40° | 9° | 25° | 0.25" | — |
| 2012 | 46° | 18° | 32° | 0.25" | — |
| 2011 | 48° | 20° | 34° | — | — |
| 2010 | 47° | 28° | 38° | — | — |
| 2009 | 48° | 35° | 42° | — | — |
| 2008 | 54° | 34° | 44° | — | — |
| 2007 | 25° | 15° | 20° | 0.51" | — |
| 2006coldest | 30° | 10° | 20° | 0.25" | — |
| 2005 | 56° | 33° | 44° | — | — |
| 2004 | 31° | 15° | 23° | 1.27" | — |
| 2003 | 58° | 39° | 49° | — | — |
| 2002 | 50° | 32° | 41° | — | — |
| 2001 | 33° | 15° | 24° | — | — |
| 2000 | 49° | 33° | 41° | — | — |
| 1999 | 37° | 18° | 27° | — | — |
| 1998 | 41° | 18° | 30° | — | — |
| 1997 | 48° | 27° | 38° | — | — |
| 1996 | 29° | 15° | 22° | 0.25" | — |
| 1995 | 34° | 14° | 24° | 0.25" | — |
| 1994 | 34° | 22° | 28° | — | — |
| 1993 | 48° | 24° | 36° | — | — |
| 1992 | 47° | 28° | 37° | — | — |
| 1991 | 40° | 11° | 26° | — | — |
| 1990 | 33° | 18° | 25° | 1.02" | — |
| 1989 | 49° | 26° | 37° | — | — |
| 1988 | 49° | 27° | 38° | — | — |
| 1987 | 39° | 19° | 29° | — | — |
| 1986 | 46° | 30° | 38° | — | — |
| 1985 | 50° | 26° | 38° | — | — |
| 1984 | 25° | 61° | 43° | — | — |
| 1983 | 30° | 14° | 22° | — | — |
| 1982 | 50° | 26° | 38° | 0.25" | — |
| 1981 | 54° | 25° | 39° | — | — |
| 1980 | 46° | 31° | 38° | — | — |
| 1979 | 49° | 32° | 40° | — | — |
| 1978 | 57° | 29° | 43° | — | — |
| 1977 | 59° | 26° | 43° | — | — |
| 1976 | 47° | 19° | 33° | — | — |
| 1975 | 61° | 29° | 45° | — | — |
| 1974 | 63° | 28° | 45° | — | — |
| 1973 | 65° | 29° | 47° | — | — |
| 1972 | 49° | 27° | 38° | — | — |
| 1971 | 41° | 32° | 37° | — | — |
West Yellowstone, MT Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
West Yellowstone, MT Monthly Precipitation
Average rainfall and snowfall per month, in inches.
West Yellowstone, MT 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 West Yellowstone, MT
West Yellowstone, MT has no months that meet our "pleasant" threshold — every season has tradeoffs.