Weather on September 21 in Monterrey
Historical weather data for September 21 in Monterrey, Mexico
Based on 44 years of data from TOPO CHICO
About This Date
September 21st in Monterrey, Mexico typically brings hot fall weather, with average highs around 32°C and lows near 21°C. Over 44 years of records, the warmest September 21st was in 2021 (32°C average), while the coldest was 1971 (17°C) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 30% of September 21st dates historically, with the wettest September 21st recording 8.89" of rain. The last decade has been 7.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.2°F warmer on this date compared to 20-30 years ago.
Planning for September 21st 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 (mm) |
|---|---|---|---|
| 2024 | 33°C (92°F) | 25°C (77°F) | 1 mm |
| 2023 | 38°C (100°F) | 24°C (75°F) | 0 mm |
| 2022 | 34°C (94°F) | 23°C (74°F) | -- |
| 2021 | 39°C (102°F) | 25°C (77°F) | 0 mm |
| 2016 | 36°C (97°F) | 23°C (74°F) | 0 mm |
| 2011 | 36°C (96°F) | 22°C (72°F) | 0 mm |
| 2010 | 28°C (82°F) | 22°C (71°F) | 226 mm |
| 2009 | 32°C (89°F) | 22°C (71°F) | 0 mm |
| 2008 | 31°C (87°F) | 20°C (68°F) | 0 mm |
| 2006 | 35°C (95°F) | 16°C (61°F) | 0 mm |
| 2005 | 33°C (91°F) | 21°C (69°F) | 0 mm |
| 2004 | 29°C (84°F) | 19°C (66°F) | 0 mm |
| 2003 | 23°C (73°F) | 18°C (64°F) | 0 mm |
| 2002 | 29°C (84°F) | 13°C (55°F) | 0 mm |
| 2001 | 36°C (96°F) | 14°C (57°F) | 28 mm |
| 2000 | 34°C (93°F) | 20°C (68°F) | 0 mm |
| 1999 | 37°C (99°F) | 21°C (70°F) | 0 mm |
| 1998 | 34°C (94°F) | 22°C (72°F) | 0 mm |
| 1997 | 35°C (95°F) | 23°C (73°F) | 0 mm |
| 1996 | 39°C (102°F) | 23°C (73°F) | 0 mm |
| 1995 | 34°C (94°F) | -- | 0 mm |
| 1994 | 33°C (91°F) | 20°C (68°F) | 0 mm |
| 1993 | 29°C (84°F) | 21°C (69°F) | 34 mm |
| 1992 | 38°C (100°F) | 22°C (71°F) | 0 mm |
| 1991 | 24°C (75°F) | 13°C (55°F) | 0 mm |
| 1990 | 30°C (86°F) | 22°C (71°F) | 0 mm |
| 1989 | 33°C (91°F) | 22°C (71°F) | 79 mm |
| 1988 | 30°C (86°F) | 23°C (73°F) | 0 mm |
| 1987 | 27°C (80°F) | 22°C (71°F) | 74 mm |
| 1986 | 30°C (86°F) | 22°C (71°F) | 0 mm |
| 1985 | 34°C (93°F) | 22°C (71°F) | 0 mm |
| 1983 | 30°C (86°F) | 16°C (60°F) | 0 mm |
| 1982 | 34°C (93°F) | 21°C (70°F) | 37 mm |
| 1981 | 34°C (94°F) | 18°C (64°F) | 0 mm |
| 1980 | 38°C (100°F) | 24°C (75°F) | 0 mm |
| 1979 | 33°C (91°F) | 20°C (68°F) | 0 mm |
| 1978 | 34°C (93°F) | 22°C (71°F) | 19 mm |
| 1977 | 35°C (95°F) | 22°C (71°F) | 0 mm |
| 1976 | 23°C (73°F) | 20°C (68°F) | 5 mm |
| 1975 | 32°C (89°F) | 21°C (69°F) | 53 mm |
| 1974 | 32°C (89°F) | 22°C (71°F) | 213 mm |
| 1973 | 28°C (82°F) | 21°C (69°F) | 0 mm |
| 1972 | 34°C (93°F) | 22°C (71°F) | 50 mm |
| 1971 | 20°C (68°F) | 14°C (57°F) | 2 mm |