Weather on August 18 in Monterrey
Historical weather data for August 18 in Monterrey, Mexico
Based on 47 years of data from TOPO CHICO
About This Date
August 18th in Monterrey, Mexico typically brings hot summer weather, with average highs around 36°C and lows near 22°C — a 25°F daily swing. Over 47 years of records, the warmest August 18th was in 2023 (33°C average), while the coldest was 2004 (22°C) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 11% of August 18th dates historically, with the wettest August 18th recording 2.87" of rain. The last decade has been 7.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.5°F warmer on this date compared to 20-30 years ago.
Planning for August 18th in Monterrey? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 39°C (103°F) | 24°C (75°F) | 0 mm |
| 2024 | 36°C (97°F) | 25°C (77°F) | 0 mm |
| 2023 | 41°C (105°F) | 27°C (80°F) | 0 mm |
| 2019 | 41°C (105°F) | 25°C (77°F) | 0 mm |
| 2018 | 39°C (103°F) | 23°C (73°F) | 0 mm |
| 2017 | 39°C (102°F) | 25°C (77°F) | 0 mm |
| 2015 | 37°C (99°F) | 23°C (74°F) | 0 mm |
| 2011 | 38°C (101°F) | 24°C (75°F) | 0 mm |
| 2010 | 37°C (99°F) | 25°C (77°F) | -- |
| 2009 | 38°C (100°F) | 25°C (77°F) | 0 mm |
| 2008 | 32°C (90°F) | 23°C (74°F) | 20 mm |
| 2007 | 37°C (98°F) | 24°C (76°F) | 0 mm |
| 2006 | 39°C (102°F) | 23°C (73°F) | 0 mm |
| 2005 | 33°C (91°F) | 21°C (69°F) | 0 mm |
| 2004 | 31°C (87°F) | 13°C (55°F) | 0 mm |
| 2003 | 31°C (87°F) | 19°C (66°F) | 0 mm |
| 2002 | 34°C (93°F) | 21°C (69°F) | 0 mm |
| 2001 | 36°C (96°F) | 21°C (69°F) | 0 mm |
| 2000 | 36°C (96°F) | 21°C (70°F) | 0 mm |
| 1999 | 37°C (98°F) | 23°C (73°F) | 0 mm |
| 1998 | 33°C (92°F) | 23°C (74°F) | 2 mm |
| 1997 | 39°C (102°F) | 23°C (73°F) | 0 mm |
| 1996 | 40°C (104°F) | 23°C (73°F) | 0 mm |
| 1995 | 33°C (92°F) | -- | 0 mm |
| 1994 | 39°C (102°F) | 23°C (73°F) | 0 mm |
| 1993 | 38°C (100°F) | 23°C (73°F) | 0 mm |
| 1992 | 34°C (93°F) | 20°C (68°F) | 0 mm |
| 1991 | 39°C (102°F) | 24°C (75°F) | 0 mm |
| 1990 | 34°C (93°F) | 23°C (73°F) | 0 mm |
| 1989 | 34°C (93°F) | 23°C (73°F) | 0 mm |
| 1988 | 26°C (78°F) | 22°C (71°F) | 73 mm |
| 1987 | 38°C (100°F) | 24°C (75°F) | 0 mm |
| 1986 | 39°C (102°F) | 24°C (75°F) | 0 mm |
| 1985 | 38°C (100°F) | 22°C (71°F) | 0 mm |
| 1983 | 40°C (104°F) | 23°C (73°F) | 0 mm |
| 1982 | 40°C (104°F) | 22°C (71°F) | 0 mm |
| 1981 | 36°C (96°F) | 22°C (71°F) | 5 mm |
| 1980 | 32°C (89°F) | 24°C (75°F) | 0 mm |
| 1979 | 38°C (100°F) | 22°C (71°F) | 0 mm |
| 1978 | 41°C (105°F) | 23°C (73°F) | 0 mm |
| 1977 | 40°C (104°F) | 23°C (73°F) | 0 mm |
| 1976 | 36°C (96°F) | 19°C (66°F) | 2 mm |
| 1975 | 31°C (87°F) | 22°C (71°F) | 0 mm |
| 1974 | 38°C (100°F) | 21°C (69°F) | 0 mm |
| 1973 | 28°C (82°F) | 20°C (68°F) | 0 mm |
| 1972 | 34°C (93°F) | 22°C (71°F) | 0 mm |
| 1971 | 31°C (87°F) | 22°C (71°F) | 0 mm |