Weather on October 21
Salt Lake City, UT
55 Years of Data
Avg High
65°F
Avg Low
40°F
Warmest
2022
64°F avg
Coldest
1996
35°F avg
About This Date
October 21st in Salt Lake City, UT typically brings mild fall weather, with average highs around 65°F and lows near 40°F — a 25°F daily swing. Over 55 years of records, the warmest October 21st was in 2022 (64°F average), while the coldest was 1996 (35°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 11% of October 21st dates historically, with the wettest October 21st recording 0.51" of rain. The last decade has been 4.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.5°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Salt Lake City, UT? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 59° | 37° | 48° | — | — |
| 2024 | 70° | 48° | 59° | — | — |
| 2023 | 75° | 50° | 63° | — | — |
| 2022warmest | 77° | 50° | 64° | — | — |
| 2021 | 68° | 42° | 55° | — | — |
| 2020 | 73° | 46° | 60° | — | — |
| 2019 | 56° | 42° | 49° | — | — |
| 2018 | 73° | 46° | 60° | — | — |
| 2017 | 55° | 39° | 47° | — | — |
| 2016 | 68° | 37° | 53° | — | — |
| 2015 | 68° | 46° | 57° | — | — |
| 2014 | 71° | 41° | 56° | — | — |
| 2013 | 65° | 38° | 51° | — | — |
| 2012 | 66° | 46° | 56° | — | — |
| 2011 | 70° | 45° | 57° | — | — |
| 2010 | 68° | 42° | 55° | — | — |
| 2009 | 57° | 38° | 47° | — | — |
| 2008 | 54° | 34° | 44° | — | — |
| 2007 | 48° | 34° | 41° | — | — |
| 2006 | 53° | 33° | 43° | — | — |
| 2005 | 67° | 41° | 54° | — | — |
| 2004 | 49° | 44° | 46° | 0.36" | — |
| 2003 | 75° | 46° | 61° | — | — |
| 2002 | 69° | 38° | 53° | — | — |
| 2001 | 70° | 42° | 56° | — | — |
| 2000 | 64° | 43° | 53° | 0.36" | — |
| 1999 | 67° | 36° | 51° | — | — |
| 1998 | 69° | 37° | 53° | — | — |
| 1997 | 65° | 38° | 51° | — | — |
| 1996coldest | 45° | 25° | 35° | — | — |
| 1995 | 60° | 37° | 49° | — | — |
| 1994 | 67° | 42° | 54° | — | — |
| 1993 | 63° | 37° | 50° | — | — |
| 1992 | 73° | 50° | 62° | — | — |
| 1991 | 69° | 38° | 53° | — | — |
| 1990 | 54° | 30° | 42° | — | — |
| 1989 | 68° | 52° | 60° | 0.05" | — |
| 1988 | 72° | 40° | 56° | — | — |
| 1987 | 67° | 35° | 51° | — | — |
| 1986 | 59° | 38° | 48° | — | — |
| 1985 | 73° | 42° | 58° | 0.38" | — |
| 1984 | 47° | 31° | 39° | — | — |
| 1983 | 70° | 41° | 55° | — | — |
| 1982 | 61° | 32° | 46° | — | — |
| 1981 | 60° | 37° | 49° | — | — |
| 1980 | 68° | 40° | 54° | — | — |
| 1979 | 53° | 33° | 43° | — | — |
| 1978 | 65° | 45° | 55° | — | — |
| 1977 | 65° | 42° | 53° | — | — |
| 1976 | 63° | 27° | 45° | — | — |
| 1975 | 75° | 41° | 58° | — | — |
| 1974 | 72° | 39° | 55° | 0.51" | — |
| 1973 | 76° | 42° | 59° | — | — |
| 1972 | 58° | 38° | 48° | 0.03" | — |
| 1971 | 58° | 40° | 49° | — | — |
55 years of data from SALT LAKE CITY SUB SEW