Weather on May 18
Baton Rouge, LA
55 Years of Data
Avg High
86°F
Avg Low
65°F
Warmest
2025
83°F avg
Coldest
2009
64°F avg
About This Date
May 18th in Baton Rouge, LA typically brings warm spring weather, with average highs around 86°F and lows near 65°F. Over 55 years of records, the warmest May 18th was in 2025 (83°F average), while the coldest was 2009 (64°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 31% of May 18th dates historically, with the wettest May 18th recording 5.77" of rain. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for May 18th in Baton Rouge, LA? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 90° | 77° | 83° | — | — |
| 2024 | 89° | 71° | 80° | 0.03" | — |
| 2023 | 88° | 69° | 78° | — | — |
| 2022 | 91° | 72° | 81° | — | — |
| 2021 | 81° | 67° | 74° | 0.38" | — |
| 2020 | 82° | 66° | 74° | 0.1" | — |
| 2019 | 89° | 68° | 79° | 0.23" | — |
| 2018 | 93° | 71° | 82° | — | — |
| 2017 | 85° | 70° | 77° | — | — |
| 2016 | 83° | 67° | 75° | 0.71" | — |
| 2015 | 89° | 73° | 81° | — | — |
| 2014 | 80° | 57° | 69° | — | — |
| 2013 | 84° | 68° | 76° | — | — |
| 2012 | 88° | 64° | 76° | — | — |
| 2011 | 76° | 52° | 64° | — | — |
| 2010 | 89° | 71° | 80° | — | — |
| 2009coldest | 75° | 53° | 64° | 0.33" | — |
| 2008 | 76° | 57° | 66° | — | — |
| 2007 | 84° | 58° | 71° | — | — |
| 2006 | 82° | 54° | 68° | — | — |
| 2005 | 87° | 62° | 75° | 0.03" | — |
| 2004 | 84° | 67° | 75° | 4.67" | — |
| 2003 | 88° | 68° | 78° | — | — |
| 2002 | 89° | 63° | 76° | 2.69" | — |
| 2001 | 88° | 65° | 76° | — | — |
| 2000 | 89° | 65° | 77° | — | — |
| 1999 | 89° | 69° | 79° | — | — |
| 1998 | 93° | 65° | 79° | — | — |
| 1997 | 87° | 67° | 77° | — | — |
| 1996 | 89° | 66° | 78° | — | — |
| 1995 | 90° | 74° | 82° | — | — |
| 1994 | 77° | 64° | 71° | 5.77" | — |
| 1993 | 85° | 62° | 73° | — | — |
| 1992 | 86° | 63° | 74° | — | — |
| 1991 | 88° | 70° | 79° | — | — |
| 1990 | 83° | 65° | 74° | 0.03" | — |
| 1989 | 87° | 59° | 73° | — | — |
| 1988 | 91° | 64° | 78° | — | — |
| 1987 | 89° | 68° | 79° | 1.88" | — |
| 1986 | 84° | 62° | 73° | — | — |
| 1985 | 89° | 61° | 75° | — | — |
| 1984 | 86° | 65° | 75° | — | — |
| 1983 | 79° | 66° | 72° | — | — |
| 1982 | 85° | 65° | 75° | 0.33" | — |
| 1981 | 91° | 67° | 79° | — | — |
| 1980 | 80° | 63° | 71° | 0.13" | — |
| 1979 | 87° | 58° | 72° | — | — |
| 1978 | 81° | 66° | 73° | 0.97" | — |
| 1977 | 86° | 67° | 76° | — | — |
| 1976 | 82° | 56° | 69° | — | — |
| 1975 | 84° | 61° | 72° | — | — |
| 1974 | 90° | 68° | 79° | 0.2" | — |
| 1973 | 84° | 62° | 73° | — | — |
| 1972 | 85° | 63° | 74° | 0.56" | — |
| 1971 | 84° | 58° | 71° | — | — |
55 years of data from LSU BEN-HUR FARM