Rosemont, Sunday, 9 August, 06:19
Clear. Feels like 65°. High 103°, low 65°.
In January, Rosemont, CA averages a high of 55.4° and a low of 39.1°. About 4.8 inches of precipitation fall over the month (10 wet days). The record high is 73.2° (2014) and the record low 24.8° (1997). Normals are computed over the last 60 years.
| Day | High | Low | Chance of precip. | Record high | Record low |
|---|---|---|---|---|---|
| 1 | 53.2° | 37.4° | 22% | 64.6° (2012) | 26.4° (1960) |
| 2 | 53.2° | 37° | 28% | 64.4° (2014) | 27° (1960) |
| 3 | 53.2° | 37.8° | 28% | 64.2° (2014) | 27.7° (1975) |
| 4 | 53.8° | 38.5° | 35% | 65.7° (2014) | 26.6° (1993) |
| 5 | 53.6° | 38.7° | 33% | 65.1° (2012) | 25.3° (1961) |
| 6 | 52.9° | 37.8° | 23% | 67.3° (1962) | 26.8° (1970) |
| 7 | 54° | 38.8° | 37% | 66.6° (1962) | 27.7° (1973) |
| 8 | 53.8° | 39.6° | 35% | 68.7° (1962) | 27.1° (1989) |
| 9 | 54.3° | 40.1° | 42% | 66.4° (1962) | 28.9° (1977) |
| 10 | 54.5° | 39.4° | 35% | 63.1° (2012) | 27.3° (2011) |
| 11 | 55.2° | 39.4° | 37% | 64.2° (2009) | 28.4° (1968) |
| 12 | 55.6° | 39.2° | 32% | 70° (2009) | 28.2° (2013) |
| 13 | 56.3° | 39.9° | 25% | 65.7° (1967) | 27.1° (1963) |
| 14 | 55.8° | 39.6° | 30% | 65.7° (2014) | 24.8° (1997) |
| 15 | 55.8° | 39.6° | 28% | 68.7° (2014) | 25.5° (1963) |
| 16 | 56.1° | 41° | 43% | 68° (2014) | 25.2° (1963) |
| 17 | 55.9° | 39.6° | 27% | 69.1° (2014) | 25.5° (1963) |
| 18 | 56.7° | 39.6° | 32% | 70.2° (2021) | 27.7° (1963) |
| 19 | 56.7° | 39.7° | 30% | 68° (2014) | 29.5° (2013) |
| 20 | 56.3° | 39.4° | 22% | 67.3° (2014) | 27.3° (1963) |
| 21 | 56.3° | 39.6° | 33% | 68.2° (2014) | 27° (1963) |
| 22 | 55.9° | 39.9° | 40% | 65.5° (1968) | 26.8° (1963) |
| 23 | 56.5° | 39.6° | 37% | 68.7° (2014) | 28.6° (1962) |
| 24 | 56.3° | 39.2° | 32% | 73.2° (2014) | 25.9° (1962) |
| 25 | 57.4° | 39° | 28% | 70.9° (2014) | 28.9° (1962) |
| 26 | 56.5° | 39.9° | 33% | 66.4° (2014) | 27.5° (2021) |
| 27 | 56.7° | 39° | 27% | 65.5° (1986) | 29.1° (1963) |
| 28 | 56.5° | 38.5° | 27% | 65.7° (1976) | 25.9° (1975) |
| 29 | 56.1° | 38.8° | 28% | 66.7° (2024) | 25.7° (1969) |
| 30 | 56.7° | 39.2° | 30% | 68° (2024) | 26.2° (2002) |
| 31 | 56.5° | 38.8° | 27% | 70.2° (2015) | 27.7° (2002) |