Weather in Fontana in January
In an average January, Fontana sees a daily high around 64°F and a low around 43°F, based on 1980–2026 of local climate records.
| Average high | 64°F |
|---|---|
| Typical high range | 55°F to 74°F |
| Average low | 43°F |
| Typical low range | 35°F to 49°F |
| Average daily precipitation | 0.10 in |
January records
The most extreme January on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total January accumulation.
High
Highest
85°F
2021-01-15
Lowest
45°F
1999-01-26
Low
Highest
58°F
2018-01-08
Lowest
25°F
2007-01-14
Feels-like
Highest
84°F
2011-01-17
Lowest
18°F
2007-01-14
Humidity
Highest
12.0 g/m³
1997-01-02
Lowest
1.1 g/m³
2025-01-24
Wind
Highest
18 mph
1997-01-06
Lowest
2 mph
1991-01-10
Gust
Highest
49 mph
2006-01-02
Lowest
8 mph
2015-01-10
Precip
Wettest
19.85 in
1993
Driest
0.11 in
2003
See Fontana's live weather grade →
Visiting Fontana in January? See how its comfort stacks up against where you live.
Compare Fontana with your city →