Mexico, Missouri Weather
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Climate of Mexico: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Mexico, with average daytime highs around 32°C. January is the coolest, when nights typically fall to about -7°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 39°C, so the seasons feel very different from each other.
The area receives about 1050 mm of rain in a typical year. Most of it falls from April to August (around 53% of the yearly total), and May is the wettest month at roughly 123 mm.
For outdoor plans and travel, September to October usually offer the most comfortable weather in Mexico, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 2° | -7° | 54 mm | 83% |
| Feb | 5° | -6° | 52 mm | 82% |
| Mar | 12° | 0° | 82 mm | 79% |
| Apr | 19° | 6° | 110 mm | 76% |
| May | 24° | 13° | 123 mm | 78% |
| Jun | 29° | 18° | 112 mm | 76% |
| Jul | 32° | 20° | 109 mm | 71% |
| Aug | 31° | 19° | 101 mm | 69% |
| Sep | 27° | 14° | 90 mm | 70% |
| Oct | 19° | 7° | 92 mm | 72% |
| Nov | 12° | 1° | 68 mm | 77% |
| Dec | 5° | -4° | 59 mm | 83% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Mexico. Values describe typical conditions, not a forecast.
About Mexico weather
Mexico lies in Missouri's humid continental-to-subtropical climate, prone to severe spring storms — about 158 km north-west of St. Louis. Expect hot, humid summers (June–August). Winter brings cold winters (December–February) with occasional ice storms. This page shows live, auto-refreshing weather for Mexico: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/Chicago.
Frequently asked questions
Mexico is about 158 km north-west of St. Louis, in Missouri.
Mexico sees cold winters (December–February) with occasional ice storms.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Mexico's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Mexico, with average daytime highs of about 32°C and nights around 20°C.
The coldest nights come in January, when the average low is about -7°C and daytime highs reach around 2°C. Frost is possible on clear, calm nights.
Mexico receives about 1050 mm of rain in a typical year. May is the wettest month at roughly 123 mm, and the main rainy period is April to August.
September to October usually offer the most comfortable weather in Mexico, with mild daytime temperatures and little rain.
In November Mexico typically sees daytime highs near 12°C and lows near 1°C, with about 68 mm of rain over the month and average humidity around 77%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
The current temperature for Mexico updates automatically at the top of this page — scroll to the hourly strip below to see how it's expected to change over the day.
Mexico's day-to-day weather follows the broader pattern of Missouri described above. See the hourly weather forecast or the air quality index for more detail.