- Pasadena ›
- Weather by month
Pasadena Weather by Month
Average temperatures, rainfall and humidity for Pasadena, United States, month by month, built from OpenWeather’s historical records. Use it to see what a typical Pasadena month looks like before you travel — then check the live Pasadena forecast for the days ahead.
Warmest month
August
31°C average high
Coolest month
January
9°C average low
Wettest month
October
94 mm of rain
Driest month
June
3 mm of rain
Average temperature and rainfall in Pasadena by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 19°C | 9°C | -7°C / 30°C | 58 mm | 56% | 6 km/h |
| February | 20°C | 9°C | -4°C / 34°C | 58 mm | 57% | 7 km/h |
| March | 21°C | 10°C | 0°C / 36°C | 45 mm | 60% | 7 km/h |
| April | 23°C | 12°C | 1°C / 35°C | 20 mm | 59% | 8 km/h |
| May | 24°C | 13°C | 5°C / 38°C | 19 mm | 65% | 7 km/h |
| June | 28°C | 16°C | 10°C / 43°C | 3 mm | 66% | 7 km/h |
| July | 31°C | 18°C | 12°C / 43°C | 5 mm | 61% | 7 km/h |
| August | 31°C | 19°C | 11°C / 41°C | 3 mm | 59% | 7 km/h |
| September | 30°C | 18°C | 9°C / 44°C | 7 mm | 60% | 6 km/h |
| October | 27°C | 14°C | 2°C / 39°C | 94 mm | 55% | 6 km/h |
| November | 23°C | 11°C | -4°C / 34°C | 22 mm | 52% | 6 km/h |
| December | 19°C | 9°C | -5°C / 29°C | 63 mm | 56% | 6 km/h |
Best time to visit Pasadena
The most comfortable time to visit Pasadena is generally April to May and November, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around October, totalling about 396 mm a year.
Travellers who prefer heat should aim for August, when highs average 31°C. October is the month to avoid if rain would spoil your plans — it averages 94 mm, roughly 36× the rainfall of the driest month (June).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Pasadena forecast for what is happening now.
Weather across United States right now
- Atlanta27°C
- Austin27°C
- Baltimore26°C
- Boston21°C
- Brooklyn25°C
- Chicago25°C
- Dallas27°C
- Denver16°C
- Detroit21°C
- Houston28°C
- Indianapolis27°C
- Las Vegas23°C
- Los Angeles14°C
- Miami28°C
- Minneapolis24°C
- New York25°C
- Orlando27°C
- Philadelphia26°C
- Phoenix29°C
- Pittsburgh22°C
- Portland13°C
- Queens25°C
- Riverside16°C
- Sacramento16°C
- San Antonio27°C
- San Diego19°C
- San Francisco12°C
- San Jose15°C
- Seattle10°C
- St. Louis28°C
- Tampa27°C
- Washington25°C
