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Weather & Climate in La Unión 1ra. Sección (Amatillo), Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
La Unión 1ra. Sección (Amatillo) has a warm climate with an average annual temperature of 80°F (26°C). Winters average 73°F in January while summers reach 83°F in July / relatively mild seasonal variation. The area gets 210 sunny days per year. Annual precipitation totals 70.3 inches (wetter than the 38-inch national average). The city sits at an elevation of 39 feet.
Temperature
73°F Jan (23°C)
83°F Jul (28°C)
| Annual Average | 79.6°F |
| 47% above US avg | |
| January Average | 73°F (23°C) |
| July Average | 83°F (28°C) |
| Sunny Days | 210 days/yr |
Geography
| Elevation | 39 ft (12 m) |
| Area | 3.9 sq mi (10.0 km²) |
| Population Density | 182/sq mi |
| Coordinates | 18.4347°N, 93.3142°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
114 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.4.
| Jan 30, 2019 | 37 km NE of La Horqueta (Poblado Doce), Mexico | M5.4 | 129 km | 172 km |
| Dec 19, 2001 | 34 km WNW of Raudales Malpaso, Mexico | M5.3 | 134 km | 190 km |
| Apr 25, 1998 | 27 km SSW of Las Choapas, Mexico | M5.2 | 125 km | 59 km |
| Jun 3, 1996 | 28 km ESE of Hidalgotitlán, Mexico | M4.9 | 141 km | 169 km |
| Sep 6, 1997 | 1 km NNE of Mundo Nuevo, Mexico | M4.7 | 119 km | 33 km |
| Jun 28, 1995 | 31 km NNE of Helio García Alfaro, Mexico | M4.7 | 137 km | 183 km |
| Jan 3, 1998 | 15 km WNW of Plan de Ayala, Mexico | M4.7 | 107 km | 200 km |
| Apr 13, 2013 | 30 km E of La Horqueta (Poblado Doce), Mexico | M4.7 | 145 km | 178 km |
| Jun 24, 2009 | 32 km NE of La Horqueta (Poblado Doce), Mexico | M4.7 | 135 km | 195 km |
| Jan 4, 2005 | 32 km NNE of La Horqueta (Poblado Doce), Mexico | M4.6 | 134 km | 170 km |
| Mar 12, 2010 | 6 km N of Plan de Ayala, Mexico | M4.6 | 102 km | 223 km |
| Nov 14, 2012 | 7 km SSW of Nuevo Juan del Grijalva, Mexico | M4.6 | 120 km | 21 km |
| Jan 28, 2024 | 13 km ENE of San Juan Volador, Mexico | M4.5 | 129 km | 10 km |
| Jul 18, 1993 | 0 km ESE of Pablo L. Sidar, Mexico | M4.5 | 67 km | 14 km |
| Jan 18, 2012 | 10 km NNE of Puerto Esmeralda, Mexico | M4.5 | 127 km | 48 km |
| Dec 2, 1997 | 36 km NNE of La Horqueta (Poblado Doce), Mexico | M4.5 | 130 km | 150 km |
| Oct 8, 2016 | 18 km NE of La Horqueta (Poblado Doce), Mexico | M4.4 | 148 km | 183 km |
| Mar 15, 2021 | 24 km NE of Niños Héroes, Mexico | M4.4 | 143 km | 179 km |
| Jun 29, 2007 | 26 km W of Plan de Ayala, Mexico | M4.4 | 114 km | 56 km |
| Aug 20, 2000 | 18 km NE of Niños Héroes, Mexico | M4.4 | 149 km | 183 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
9 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2021 | Grace | Category 3 | 121 mph | 241 km |
| 2017 | Franklin | Category 1 | 86 mph | 227 km |
| 2013 | Barbara | Category 1 | 81 mph | 256 km |
| 2011 | Nate | Category 1 | 75 mph | 177 km |
| 2010 | Karl | Category 3 | 127 mph | 130 km |
| 2007 | Dean | Category 1 | 92 mph | 165 km |
| 2005 | Stan | Category 1 | 81 mph | 119 km |
| 1995 | Roxanne | Category 1 | 86 mph | 225 km |
| 1990 | Diana | Category 1 | 86 mph | 291 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Chichon, El (120 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Chichon, El | Lava dome(s) | 1,150 m (3,773 ft) | 1982 | 120 km |
| San Martin | Shield | 1,650 m (5,413 ft) | 1796 | 199 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 73°F (23°C) | 5.9 in | Coldest |
| February | 74°F (24°C) | 3.7 in | |
| March | 78°F (26°C) | 1.6 in | Driest |
| April | 82°F (28°C) | 1.6 in | |
| May | 84°F (29°C) | 2.2 in | Warmest |
| June | 83°F (29°C) | 5.8 in | |
| July | 83°F (28°C) | 4.9 in | |
| August | 83°F (28°C) | 6.4 in | |
| September | 82°F (28°C) | 10.8 in | |
| October | 80°F (27°C) | 13.4 in | Wettest |
| November | 77°F (25°C) | 7.8 in | |
| December | 75°F (24°C) | 6.0 in |
La Unión 1ra. Sección (Amatillo) has a seasonal temperature swing of 11°F / from 73°F in January to 84°F in May. Total annual precipitation is 70.3 inches, with October being the wettest month (13.4") and March the driest (1.6").