Weather in Fontana, California, United States in January
In an average January, Fontana sees a daily high around 64°F and a low around 41°F, based on 1981–2026 of local climate records.
| Average high | 64°F |
|---|---|
| Typical high range | 54°F to 75°F |
| Average low | 41°F |
| Typical low range | 34°F to 49°F |
| Average daily precipitation | 0.10 in |
January records
The most extreme January on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total January accumulation.
High
Highest
86°F
2003-01-31
Lowest
42°F
1987-01-16
Low
Highest
56°F
2018-01-08
Lowest
24°F
2007-01-14
Feels-like
Highest
84°F
2003-01-31
Lowest
11°F
1987-01-17
Humidity
Highest
12.4 g/m³
1997-01-02
Lowest
1.1 g/m³
2025-01-21
Wind
Highest
36 mph
2010-01-21
Lowest
4 mph
2015-01-09
Precip
Wettest
13.70 in
1993
Driest
0.09 in
2003
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