Guanajuato, Mexico · population 60,528 · 684 weather stations within 200 km · records 1769 to 2025
Valle de Santiago has an average annual daytime high of 26.5°C, based on the 1951 to 1980 baseline. Its warmest month is May, when highs typically reach 30.8°C, and its coldest is January, with overnight lows near 5.5°C.
These figures reflect annual averages, not single-day records. Daily observations are outside this dataset's precision.
Since 1900, Valle de Santiago's average temperature has risen by +1.6°C. Compared to the earliest station records that begin in 1769, warming totals +1.9°C.
20-year smoothed annual temperature reconstructed from station anomalies. Dashed line: 1951–1980 baseline.
Daytime highs sit within a comfortable 15°C to 26°C range.
Valle de Santiago's average annual daytime high is 26.5°C, based on the 1951 to 1980 baseline period. The warmest month is May, with highs averaging 30.8°C, and the coldest is January, with lows averaging 5.5°C.
May is the warmest month in Valle de Santiago, with typical daytime highs of 30.8°C.
2023 is the hottest year on record for Valle de Santiago, running +1.6°C above the 1951 to 1980 baseline.
Yes. Since 1900, Valle de Santiago has warmed by roughly +1.6°C.
January to December typically offers the most comfortable daytime highs, in the 15°C to 26°C range.
Baseline period 1951 to 1980. Monthly averages are the mean of station observations weighted by proximity. Warming trend is the 20-year smoothed anomaly against that baseline.