Texas, United States of America · population 153,784 · 193 weather stations within 200 km · records 1799 to 2025
Pasadena has an average annual daytime high of 25.3°C, based on the 1951 to 1980 baseline. Its warmest month is August, when highs typically reach 32.8°C, and its coldest is January, with overnight lows near 6.9°C.
These figures reflect annual averages, not single-day records. Daily observations are outside this dataset's precision.
Since 1900, Pasadena's average temperature has risen by +1.9°C. Compared to the earliest station records that begin in 1799, warming totals +2.1°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.
Pasadena's average annual daytime high is 25.3°C, based on the 1951 to 1980 baseline period. The warmest month is August, with highs averaging 32.8°C, and the coldest is January, with lows averaging 6.9°C.
August is the warmest month in Pasadena, with typical daytime highs of 32.8°C.
2016 is the hottest year on record for Pasadena, running +2.3°C above the 1951 to 1980 baseline.
Yes. Since 1900, Pasadena has warmed by roughly +1.9°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.