Fontana (CA)
January
Weather in Fontana, California for January 2026
Your guide to Fontana weather in January - trends and predictions
In general, the average temperature in Fontana at the beginning of January is 15.9 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 14.6 °F by the end of January.
Fontana experiences moderate rainfall in January, with an average of 6 rainy days and a total precipitation of 55.7 mm.
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Temperatures
Rain 🌧️
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25
Dry days
6
Rainy days
0
Snow days
15°/6°
Temperatures
11 km/h
Avg max wind
43 %
Avg humidity
Fontana Weather January
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Temperatures trend during January in Fontana
See the weather trend as well as the moving average line
January weather in Fontana day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jan. 1 |  Partly cloudy | 18° /7° | 0 mm | 5 | |
| Jan. 2 |  Overcast | 20° /9° | 0 mm | 5 | |
| Jan. 3 |  Light rain shower | 14° /9° | 4.4 mm | 4 | |
| Jan. 4 | Partly cloudy | 16° /5° | 0 mm | 5 | |
| Jan. 5 | Partly cloudy | 17° /7° | 0 mm | 5 | |
| Jan. 6 |  Sunny | 15° /8° | 0 mm | 5 | |
| Jan. 7 | Patchy rain possible | 11° /5° | 0.9 mm | 3 | |
| Jan. 8 | Partly cloudy | 12° /4° | 0.1 mm | 4 | |
| Jan. 9 | Sunny | 16° /7° | 0 mm | 5 | |
| Jan. 10 | Sunny | 14° /4° | 0 mm | 5 | |
| Jan. 11 | Patchy rain possible | 13° /5° | 0.1 mm | 4 | |
| Jan. 12 | Sunny | 13° /3° | 0 mm | 4 | |
| Jan. 13 | Sunny | 13° /4° | 0 mm | 4 | |
| Jan. 14 | Sunny | 14° /4° | 0 mm | 5 | |
| Jan. 15 | Overcast | 15° /6° | 0 mm | 4 | |
| Jan. 16 | Sunny | 18° /6° | 0 mm | 5 | |
| Jan. 17 | Partly cloudy | 11° /4° | 0 mm | 4 | |
| Jan. 18 | Sunny | 16° /6° | 0 mm | 5 | |
| Jan. 19 | Overcast | 17° /7° | 0 mm | 5 | |
| Jan. 20 |  Light drizzle | 15° /5° | 2.4 mm | 4 | |
| Jan. 21 | Light rain shower | 13° /4° | 5.8 mm | 4 | |
| Jan. 22 |  Moderate rain | 16° /7° | 12 mm | 4 | |
| Jan. 23 | Patchy rain possible | 16° /7° | 0 mm | 4 | |
| Jan. 24 | Overcast | 17° /5° | 0 mm | 5 | |
| Jan. 25 | Patchy rain possible | 14° /6° | 0 mm | 3 | |
| Jan. 26 | Sunny | 12° /5° | 11.3 mm | 4 | |
| Jan. 27 | Sunny | 13° /6° | 18.6 mm | 4 | |
| Jan. 28 | Overcast | 15° /8° | 0 mm | 4 | |
| Jan. 29 | Partly cloudy | 16° /7° | 0 mm | 5 | |
| Jan. 30 | Overcast | 15° /8° | 0 mm | 4 | |
| Jan. 31 | Partly cloudy | 17° /8° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Fontana in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Fontana forecast closer to your planned date for the most up-to-date weather information.
Change Month
Fontana in January - FAQ
What are the expected maximum and minimum temperatures in Fontana during January?
During January, expect a variety of temperatures with highs around 15° and lows near 6°, suitable for diverse activities and preferences.
How much rainfall should be expected in Fontana during January?
Moderate rainfall is anticipated in Fontana during January, with a total of 55.7 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Fontana during January?
The average wind speed in Fontana during January is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
January rainfall patterns in Fontana
Explore the daily rainfall trends and prepare for Fontanas January weather 💧
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