Weather on September 18 in Monterrey
Historical weather data for September 18 in Monterrey, Mexico
Avg High32°C (90°F)
Avg Low21°C (70°F)
Warmest198031°C
Coldest198121°C
Based on 45 years of data from TOPO CHICO
About This Date
September 18th in Monterrey, Mexico typically brings hot fall weather, with average highs around 32°C and lows near 21°C. Over 45 years of records, the warmest September 18th was in 1980 (31°C average), while the coldest was 1981 (21°C) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 33% of September 18th dates historically, with the wettest September 18th recording 17.3" of rain.
Planning for September 18th in Monterrey? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 32°C (90°F) | 24°C (75°F) | -- |
| 2023 | 36°C (97°F) | 23°C (73°F) | 0.28" |
| 2020 | 30°C (86°F) | 22°C (72°F) | 0.51" |
| 2019 | 36°C (97°F) | 24°C (75°F) | 0" |
| 2015 | 34°C (93°F) | 23°C (73°F) | 0" |
| 2011 | 34°C (94°F) | 22°C (72°F) | 0.43" |
| 2010 | 34°C (94°F) | 22°C (72°F) | 5.03" |
| 2009 | 34°C (93°F) | 24°C (75°F) | 0" |
| 2008 | 29°C (84°F) | 16°C (61°F) | 0" |
| 2007 | 32°C (89°F) | 22°C (72°F) | 0" |
| 2006 | 33°C (91°F) | 23°C (73°F) | 0.94" |
| 2005 | 33°C (91°F) | 22°C (71°F) | 0" |
| 2004 | 32°C (89°F) | 20°C (68°F) | 0" |
| 2003 | 29°C (84°F) | 19°C (66°F) | 0.99" |
| 2002 | 31°C (87°F) | 19°C (66°F) | 0" |
| 2001 | 30°C (86°F) | 16°C (60°F) | 0" |
| 2000 | 31°C (87°F) | 18°C (64°F) | 0" |
| 1999 | 31°C (88°F) | 22°C (72°F) | 0" |
| 1998 | 28°C (83°F) | 22°C (72°F) | 0.03" |
| 1997 | 38°C (100°F) | 23°C (73°F) | 0" |
| 1996 | 34°C (93°F) | 25°C (77°F) | 0" |
| 1995 | 35°C (95°F) | -- | 0" |
| 1994 | 30°C (86°F) | 20°C (68°F) | 0" |
| 1993 | 32°C (89°F) | 20°C (68°F) | 0" |
| 1992 | 35°C (95°F) | 22°C (71°F) | 0" |
| 1991 | 32°C (89°F) | 21°C (69°F) | 0" |
| 1990 | 30°C (86°F) | 21°C (69°F) | 0.33" |
| 1989 | 29°C (84°F) | 21°C (69°F) | 1.14" |
| 1988 | 27°C (81°F) | 21°C (70°F) | 17.3" |
| 1987 | 36°C (96°F) | 24°C (75°F) | 1.78" |
| 1986 | 33°C (91°F) | 21°C (69°F) | 0" |
| 1985 | 33°C (91°F) | 22°C (71°F) | 0" |
| 1983 | 33°C (91°F) | 23°C (73°F) | 0" |
| 1982 | 36°C (96°F) | 21°C (69°F) | 0" |
| 1981 | 27°C (80°F) | 16°C (60°F) | 0" |
| 1980 | 39°C (102°F) | 22°C (71°F) | 0" |
| 1979 | 28°C (82°F) | 20°C (68°F) | 0.13" |
| 1978 | 32°C (89°F) | 22°C (71°F) | 0" |
| 1977 | 32°C (89°F) | 22°C (71°F) | 0" |
| 1976 | 27°C (80°F) | 21°C (69°F) | 0.18" |
| 1975 | 36°C (96°F) | 21°C (69°F) | 0" |
| 1974 | 38°C (100°F) | 22°C (71°F) | 0" |
| 1973 | 27°C (80°F) | 20°C (68°F) | 1.04" |
| 1972 | 33°C (91°F) | 23°C (73°F) | 0" |
| 1971 | 28°C (82°F) | 21°C (69°F) | 2.29" |