Weather on October 21
Billings, MT
55 Years of Data
Avg High
65°F
Avg Low
34°F
Warmest
2003
65°F avg
Coldest
1984
30°F avg
About This Date
October 21st in Billings, MT typically brings mild fall weather, with average highs around 65°F and lows near 34°F — a 31°F daily swing. Over 55 years of records, the warmest October 21st was in 2003 (65°F average), while the coldest was 1984 (30°F) — a 35°F range across recorded history. Rain or other precipitation has occurred on about 18% of October 21st dates historically, with the wettest October 21st recording 2.01" 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 21st in Billings, MT? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 58° | 30° | 44° | — | — |
| 2024 | 79° | 41° | 60° | — | — |
| 2023 | 83° | 39° | 61° | — | — |
| 2022 | 80° | 46° | 63° | — | — |
| 2021 | 53° | 34° | 43° | — | — |
| 2020 | 43° | 33° | 38° | 0.03" | — |
| 2019 | 49° | 30° | 39° | 0.25" | — |
| 2018 | 75° | 30° | 53° | — | — |
| 2017 | 74° | 43° | 58° | — | — |
| 2016 | 64° | 34° | 49° | — | — |
| 2015 | 55° | 35° | 45° | 0.51" | — |
| 2014 | 82° | 37° | 60° | — | — |
| 2013 | 63° | 41° | 52° | — | — |
| 2012 | 69° | 41° | 55° | 0.58" | — |
| 2011 | 68° | 48° | 58° | 0.05" | — |
| 2010 | 75° | 32° | 54° | — | — |
| 2009 | 52° | 39° | 45° | — | — |
| 2008 | 55° | 42° | 49° | — | — |
| 2007 | 52° | 34° | 43° | 0.05" | — |
| 2006 | 47° | 37° | 42° | 0.05" | — |
| 2005 | 64° | 43° | 53° | — | — |
| 2004 | 58° | 38° | 48° | — | — |
| 2003warmest | 87° | 43° | 65° | — | — |
| 2002 | 70° | 29° | 49° | — | — |
| 2001 | 60° | 31° | 45° | — | — |
| 2000 | 73° | 41° | 57° | — | — |
| 1999 | 77° | 39° | 58° | — | — |
| 1998 | 63° | 30° | 46° | — | — |
| 1997 | 61° | 28° | 44° | — | — |
| 1996 | 48° | 23° | 36° | — | — |
| 1995 | 55° | 28° | 42° | 0.08" | — |
| 1994 | 62° | 41° | 52° | — | — |
| 1993 | 68° | 29° | 48° | — | — |
| 1992 | 83° | 35° | 59° | — | — |
| 1991 | 74° | 29° | 51° | — | — |
| 1990 | 60° | 22° | 41° | — | — |
| 1989 | 73° | 33° | 53° | — | — |
| 1988 | 73° | 36° | 54° | — | — |
| 1987 | 67° | 24° | 45° | — | — |
| 1986 | 66° | 35° | 51° | — | — |
| 1985 | 73° | 41° | 57° | — | — |
| 1984coldest | 39° | 21° | 30° | — | — |
| 1983 | 69° | 33° | 51° | — | — |
| 1982 | 65° | 27° | 46° | — | — |
| 1981 | 38° | 24° | 31° | — | — |
| 1980 | 66° | 35° | 51° | — | — |
| 1979 | 46° | 29° | 37° | 0.89" | — |
| 1978 | 70° | 38° | 54° | — | — |
| 1977 | 66° | 35° | 51° | — | — |
| 1976 | 56° | 23° | 39° | — | — |
| 1975 | 61° | 34° | 47° | 2.01" | — |
| 1974 | 79° | 42° | 60° | — | — |
| 1973 | 75° | 36° | 55° | — | — |
| 1972 | 68° | 27° | 47° | — | — |
| 1971 | 63° | 39° | 51° | — | — |
55 years of data from BILLINGS WTP