Pasadena Weather in August
Average highs run from 90°F on August 1 to 92°F on August 31, and lows from 63°F to 63°F. Normal precipitation for the month is 0.03 in over about 0 wet days.
August day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 91°F
- Average low
- 63°F
- Precipitation
- 0.03 in
- Record high
- 101°FAug 24, 2010
- Record low
- 37°FAug 20, 1959
- Chance of a freeze
- 0%
- Days of 90°F or more
- 19.4
- Daylight
- 13 h 49 min to 12 h 54 min
- Cloud cover
- 16%
- Humidity
- 49%
- Dew point
- 52°F
- Wind
- 5.4 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Aug 1 | 90°F | 63°F | 94°F 1993 | 50°F 1976 | 2% |
| Aug 2 | 90°F | 63°F | 92°F 1993 | 50°F 1976 | 1% |
| Aug 3 | 90°F | 63°F | 94°F 1998 | 45°F 1976 | 1% |
| Aug 4 | 90°F | 63°F | 97°F 1998 | 48°F 1976 | 1% |
| Aug 5 | 90°F | 63°F | 97°F 1998 | 51°F 1956 | 1% |
| Aug 6 | 91°F | 63°F | 96°F 1997 | 50°F 1976 | 1% |
| Aug 7 | 91°F | 63°F | 93°F 1981 | 49°F 2009 | 1% |
| Aug 8 | 91°F | 63°F | 96°F 1981 | 52°F 2009 | 1% |
| Aug 9 | 91°F | 63°F | 95°F 2012 | 42°F 1949 | 1% |
| Aug 10 | 91°F | 63°F | 96°F 2012 | 49°F 1949 | 1% |
| Aug 11 | 91°F | 63°F | 96°F 2012 | 47°F 1949 | 1% |
| Aug 12 | 91°F | 63°F | 95°F 1973 | 52°F 1949 | 1% |
| Aug 13 | 91°F | 63°F | 96°F 2012 | 49°F 1954 | 1% |
| Aug 14 | 91°F | 63°F | 94°F 2016 | 47°F 1968 | 1% |
| Aug 15 | 91°F | 63°F | 93°F 2015 | 39°F 1987 | 1% |
| Aug 16 | 91°F | 63°F | 92°F 2010 | 51°F 1980 | 1% |
| Aug 17 | 92°F | 63°F | 92°F 1950 | 42°F 1968 | 1% |
| Aug 18 | 92°F | 63°F | 93°F 1950 | 42°F 1976 | 1% |
| Aug 19 | 92°F | 63°F | 93°F 1950 | 42°F 1980 | 1% |
| Aug 20 | 92°F | 63°F | 90°F 1982 | 37°F 1959 | 1% |
| Aug 21 | 92°F | 63°F | 93°F 2006 | 43°F 1968 | 1% |
| Aug 22 | 92°F | 63°F | 91°F 1998 | 45°F 1968 | 1% |
| Aug 23 | 92°F | 63°F | 92°F 2010 | 47°F 1960 | 1% |
| Aug 24 | 92°F | 63°F | 101°F 2010 | 51°F 1963 | 1% |
| Aug 25 | 92°F | 63°F | 98°F 2010 | 50°F 1990 | 1% |
| Aug 26 | 92°F | 63°F | 94°F 2010 | 42°F 1973 | 1% |
| Aug 27 | 92°F | 63°F | 94°F 2009 | 43°F 1973 | 1% |
| Aug 28 | 92°F | 63°F | 99°F 2008 | 48°F 1951 | 1% |
| Aug 29 | 92°F | 63°F | 99°F 2007 | 41°F 1953 | 1% |
| Aug 30 | 92°F | 63°F | 99°F 2007 | 41°F 1957 | 1% |
| Aug 31 | 92°F | 63°F | 95°F 2007 | 39°F 1964 | 2% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PDT).
- August 1
- sunrise 6:04 AM, sunset 7:53 PM
- August 31
- sunrise 6:26 AM, sunset 7:20 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00046719 (Pasadena), public domain. Records: NOAA GHCN-Daily, station USC00046006, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.