Altadena Weather in July
Average highs run from 87°F on July 1 to 90°F on July 31, and lows from 60°F to 63°F. Normal precipitation for the month is 0.06 in over about 1 wet days.
July day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
July at a glance
- Average high
- 89°F
- Average low
- 62°F
- Precipitation
- 0.06 in
- Record high
- 102°FJul 5, 2007
- Record low
- 38°FJul 11, 1974
- Chance of a freeze
- 0%
- Days of 90°F or more
- 15.4
- Daylight
- 14 h 23 min to 13 h 51 min
- Cloud cover
- 19%
- Humidity
- 53%
- Dew point
- 53°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 |
|---|---|---|---|---|---|
| Jul 1 | 87°F | 60°F | 92°F 2007 | 42°F 1992 | 3% |
| Jul 2 | 88°F | 61°F | 94°F 2001 | 48°F 1956 | 3% |
| Jul 3 | 88°F | 61°F | 98°F 1991 | 47°F 1979 | 3% |
| Jul 4 | 88°F | 61°F | 96°F 2007 | 48°F 1964 | 3% |
| Jul 5 | 88°F | 61°F | 102°F 2007 | 50°F 1979 | 3% |
| Jul 6 | 88°F | 61°F | 98°F 1989 | 50°F 1969 | 3% |
| Jul 7 | 88°F | 61°F | 93°F 1989 | 50°F 1969 | 3% |
| Jul 8 | 89°F | 61°F | 96°F 2008 | 50°F 1969 | 2% |
| Jul 9 | 89°F | 62°F | 97°F 2008 | 46°F 2015 | 2% |
| Jul 10 | 89°F | 62°F | 98°F 1961 | 45°F 1974 | 2% |
| Jul 11 | 89°F | 62°F | 97°F 1961 | 38°F 1974 | 2% |
| Jul 12 | 89°F | 62°F | 92°F 1961 | 50°F 1997 | 2% |
| Jul 13 | 89°F | 62°F | 95°F 1972 | 49°F 1966 | 2% |
| Jul 14 | 89°F | 62°F | 99°F 1972 | 49°F 1966 | 2% |
| Jul 15 | 89°F | 62°F | 97°F 1972 | 50°F 2011 | 2% |
| Jul 16 | 89°F | 62°F | 99°F 2006 | 48°F 2011 | 2% |
| Jul 17 | 89°F | 62°F | 98°F 1960 | 44°F 1987 | 2% |
| Jul 18 | 89°F | 62°F | 100°F 2005 | 38°F 1987 | 2% |
| Jul 19 | 90°F | 62°F | 94°F 2005 | 48°F 1987 | 2% |
| Jul 20 | 90°F | 63°F | 93°F 1960 | 50°F 1987 | 2% |
| Jul 21 | 90°F | 63°F | 100°F 2006 | 42°F 1987 | 2% |
| Jul 22 | 90°F | 63°F | 100°F 2006 | 47°F 1987 | 2% |
| Jul 23 | 90°F | 63°F | 96°F 2016 | 51°F 1984 | 2% |
| Jul 24 | 90°F | 63°F | 96°F 2006 | 53°F 1958 | 2% |
| Jul 25 | 90°F | 63°F | 92°F 1996 | 55°F 2025 | 2% |
| Jul 26 | 90°F | 63°F | 92°F 1998 | 54°F 2025 | 2% |
| Jul 27 | 90°F | 63°F | 94°F 1998 | 56°F 2025 | 2% |
| Jul 28 | 90°F | 63°F | 98°F 1995 | 55°F 1948 | 2% |
| Jul 29 | 90°F | 63°F | 97°F 1995 | 54°F 1948 | 2% |
| Jul 30 | 90°F | 63°F | 94°F 1995 | 51°F 1975 | 2% |
| Jul 31 | 90°F | 63°F | 96°F 1982 | 51°F 1976 | 2% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PDT).
- July 1
- sunrise 5:45 AM, sunset 8:08 PM
- July 31
- sunrise 6:03 AM, sunset 7:54 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.