Weather on September 18
Provo, UT
55 Years of Data
Avg High
81°F
Avg Low
49°F
Warmest
2014
76°F avg
Coldest
1971
45°F avg
About This Date
September 18th in Provo, UT typically brings warm fall weather, with average highs around 81°F and lows near 49°F — a 32°F daily swing. Over 51 years of records, the warmest September 18th was in 2014 (76°F average), while the coldest was 1971 (45°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 16% of September 18th dates historically, with the wettest September 18th recording 3.15" of rain. The last decade has been 5.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.7°F warmer on this date compared to 20-30 years ago.
Planning for September 18th in Provo, UT? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 52° | 67° | — | — |
| 2024 | 73° | 46° | 60° | — | — |
| 2023 | 87° | 58° | 72° | — | — |
| 2022 | 88° | 54° | 71° | — | — |
| 2021 | 86° | 60° | 73° | 0.41" | — |
| 2020 | 91° | 54° | 72° | — | — |
| 2019 | 84° | 47° | 65° | — | — |
| 2018 | 90° | 57° | 73° | — | — |
| 2017 | 83° | 51° | 67° | — | — |
| 2016 | 87° | 48° | 68° | — | — |
| 2015 | 71° | 48° | 60° | — | — |
| 2014warmest | 94° | 58° | 76° | — | — |
| 2013 | 87° | 58° | 72° | — | — |
| 2012 | 82° | 47° | 64° | — | — |
| 2011 | 78° | 49° | 63° | — | — |
| 2010 | 90° | 50° | 70° | — | — |
| 2009 | 86° | 56° | 71° | — | — |
| 2008 | 83° | 51° | 67° | — | — |
| 2007 | 79° | 47° | 63° | — | — |
| 2006 | 67° | 35° | 51° | — | — |
| 2005 | 76° | 45° | 60° | — | — |
| 2004 | 86° | 58° | 72° | — | — |
| 2003 | 68° | 37° | 53° | — | — |
| 2002 | 62° | 49° | 55° | 0.74" | — |
| 2001 | 81° | 51° | 66° | — | — |
| 2000 | 83° | 54° | 68° | — | — |
| 1999 | 84° | 51° | 68° | — | — |
| 1998 | 89° | 58° | 73° | — | — |
| 1997 | 82° | 56° | 69° | 1.6" | — |
| 1996 | 58° | 37° | 47° | — | — |
| 1995 | 78° | 50° | 64° | 0.1" | — |
| 1994 | 89° | 53° | 71° | — | — |
| 1993 | 62° | 45° | 53° | 0.86" | — |
| 1992 | 84° | 52° | 68° | — | — |
| 1991 | 81° | 45° | 63° | — | — |
| 1990 | 84° | 52° | 68° | 0.05" | — |
| 1989 | 75° | 51° | 63° | 3.15" | — |
| 1988 | 80° | 44° | 62° | — | — |
| 1987 | 80° | 38° | 59° | — | — |
| 1986 | 74° | 51° | 62° | — | — |
| 1985 | 79° | 52° | 65° | 0.38" | — |
| 1984 | 90° | 53° | 71° | — | — |
| 1983 | 90° | 50° | 70° | — | — |
| 1982 | 80° | 48° | 64° | — | — |
| 1981 | 89° | 50° | 70° | — | — |
| 1976 | 82° | — | — | — | — |
| 1975 | 85° | 44° | 64° | — | — |
| 1974 | 83° | 43° | 63° | — | — |
| 1973 | 85° | 41° | 63° | — | — |
| 1972 | 82° | 54° | 68° | — | — |
| 1971coldest | 62° | 28° | 45° | — | — |
51 years of data from PROVO RADIO KAYK