Weather on September 21
Provo, UT
55 Years of Data
Avg High
78°F
Avg Low
47°F
Warmest
2014
75°F avg
Coldest
2004
48°F avg
About This Date
September 21st in Provo, UT typically brings pleasant fall weather, with average highs around 78°F and lows near 47°F — a 31°F daily swing. Over 50 years of records, the warmest September 21st was in 2014 (75°F average), while the coldest was 2004 (48°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 16% of September 21st dates historically, with the wettest September 21st recording 1.04" of rain. The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
Planning for September 21st in Provo, UT? Great weather for outdoor activities.
Warming Trend
2.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 85° | 57° | 71° | — | — |
| 2024 | 81° | 51° | 66° | — | — |
| 2023 | 83° | 59° | 71° | — | — |
| 2022 | 84° | 59° | 72° | 0.89" | — |
| 2021 | 74° | 41° | 57° | — | — |
| 2020 | 90° | 51° | 70° | — | — |
| 2019 | 66° | 42° | 54° | — | — |
| 2018 | 85° | 46° | 65° | — | — |
| 2017 | 76° | 53° | 64° | — | — |
| 2016 | 82° | 57° | 70° | — | — |
| 2015 | 89° | 49° | 69° | — | — |
| 2014warmest | 89° | 61° | 75° | — | — |
| 2013 | 86° | 52° | 69° | — | — |
| 2012 | 85° | 48° | 66° | — | — |
| 2011 | 81° | 50° | 65° | — | — |
| 2010 | 87° | 49° | 68° | — | — |
| 2009 | 78° | 47° | 62° | — | — |
| 2008 | 79° | 53° | 66° | — | — |
| 2007 | 85° | 50° | 67° | — | — |
| 2006 | 58° | 44° | 51° | — | — |
| 2005 | 76° | 55° | 65° | 0.43" | — |
| 2004coldest | 58° | 38° | 48° | — | — |
| 2003 | 80° | 42° | 61° | — | — |
| 2002 | 78° | 48° | 63° | — | — |
| 2001 | 90° | 54° | 72° | — | — |
| 2000 | 79° | 54° | 66° | 0.13" | — |
| 1999 | 81° | 49° | 65° | — | — |
| 1998 | 65° | 50° | 57° | 0.03" | — |
| 1997 | 67° | 47° | 57° | — | — |
| 1996 | 81° | 43° | 62° | — | — |
| 1995 | 74° | 41° | 57° | — | — |
| 1994 | 79° | 45° | 62° | — | — |
| 1993 | 82° | 45° | 63° | — | — |
| 1992 | 81° | 48° | 64° | — | — |
| 1991 | 84° | 50° | 67° | — | — |
| 1990 | 80° | 48° | 64° | — | — |
| 1989 | 69° | 43° | 56° | 0.15" | — |
| 1988 | 65° | 47° | 56° | 0.53" | — |
| 1987 | 84° | 47° | 65° | — | — |
| 1986 | 69° | 40° | 54° | — | — |
| 1985 | 66° | 38° | 52° | — | — |
| 1984 | 65° | 55° | 60° | 1.04" | — |
| 1983 | 75° | 32° | 54° | — | — |
| 1982 | 88° | 53° | 70° | — | — |
| 1981 | 84° | 52° | 68° | 0.13" | — |
| 1975 | 71° | 37° | 54° | — | — |
| 1974 | 83° | 38° | 60° | — | — |
| 1973 | 84° | 37° | 61° | — | — |
| 1972 | 77° | 35° | 56° | — | — |
| 1971 | 65° | 34° | 49° | — | — |
50 years of data from PROVO RADIO KAYK