Climate averages 1991–2020
San Juan del Río weather
in January.
A mild, very dry month: the coolest and the joint 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
January is a mild month in San Juan del Río: daytime highs average 21.7°C and nights cool to about 7.5°C. By daytime temperature it is the coolest month of the year.
Expect about 13 mm of rain on roughly 3 days, which makes January a very dry month (the joint 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 03 min on an average January day.
The nearest other city in this atlas is Santiago de Querétaro (46 km away). In January its highs average 22.6°C, 0.9°C warmer than San Juan del Río, with 11 mm of rain.
Among the 153 cities listed in Mexico, San Juan del Río ranks 80th of 153 for the warmest January highs and joint 49th of 153 for the driest January (rainfall, lowest first). The mean January high of those 153 cities is 22.4°C; San Juan del Río is 0.7°C cooler than that mean.
From January to February, average highs rise by 2.3°C to 24.0°C, and monthly rainfall rises from 13 mm to 14 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
San Juan del Río climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 21.7°C7.5°C | 7.5°C | 13 | 2.7 | 11.011 h |
| February | 24.0°C8.8°C | 8.8°C | 14 | 2.5 | 11.511 h |
| March | 26.5°C10.4°C | 10.4°C | 13 | 3.0 | 12.012 h |
| April | 28.4°C12.7°C | 12.7°C | 21 | 4.4 | 12.613 h |
| May | 28.3°C14.1°C | 14.1°C | 38 | 8.0 | 13.113 h |
| June | 25.8°C14.5°C | 14.5°C | 90 | 12.4 | 13.313 h |
| July | 24.0°C14.0°C | 14.0°C | 93 | 13.6 | 13.213 h |
| August | 24.3°C14.2°C | 14.2°C | 82 | 12.0 | 12.813 h |
| September | 22.8°C13.9°C | 13.9°C | 98 | 13.3 | 12.312 h |
| October | 22.5°C11.9°C | 11.9°C | 43 | 7.0 | 11.712 h |
| November | 22.2°C9.8°C | 9.8°C | 16 | 3.1 | 11.211 h |
| December | 22.2°C8.4°C | 8.4°C | 4.9 | 1.3 | 10.911 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Santiago de Querétaro in JanuaryMexico · 46 kmHigh 22.6°C · Low 8.2°C · 11 mm rain
- El Pueblito in JanuaryMexico · 49 kmHigh 22.2°C · Low 7.6°C · 11 mm rain
- Celaya in JanuaryMexico · 86 kmHigh 23.1°C · Low 8.1°C · 10 mm rain
- Tepeji del Río de Ocampo in JanuaryMexico · 87 kmHigh 20.9°C · Low 6.3°C · 14 mm rain
- San Miguel de Allende in JanuaryMexico · 97 kmHigh 22.0°C · Low 8.3°C · 12 mm rain
- Heróica Zitácuaro in JanuaryMexico · 112 kmHigh 21.2°C · Low 7.7°C · 23 mm rain
- Zumpango in JanuaryMexico · 114 kmHigh 20.1°C · Low 6.4°C · 8.4 mm rain
- Cuautitlán Izcalli in JanuaryMexico · 116 kmHigh 19.5°C · Low 5.2°C · 17 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for San Juan del Río) is explained once on the San Juan del Río year overview and on the Sources, method and limits page.