Vacaville (CA)
January
Weather in Vacaville, California for January 2026
Your guide to Vacaville weather in January - trends and predictions
In general, the average temperature in Vacaville at the beginning of January is 12.3 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 11.6 °F by the end of January.
With an average of 4 rainy days, Vacaville experiences minimal rainfall in January.
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Temperatures
Rain 🌧️
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27
Dry days
4
Rainy days
0
Snow days
13°/4°
Temperatures
13 km/h
Avg max wind
67 %
Avg humidity
Vacaville Weather January
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Temperatures trend during January in Vacaville
See the weather trend as well as the moving average line
January weather in Vacaville day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jan. 1 |  Patchy rain possible | 11° /4° | 0.6 mm | 3 | |
| Jan. 2 |  Overcast | 14° /7° | 0 mm | 3 | |
| Jan. 3 |  Moderate or heavy rain shower | 12° /6° | 16.5 mm | 3 | |
| Jan. 4 |  Cloudy | 11° /4° | 0 mm | 3 | |
| Jan. 5 | Cloudy | 11° /4° | 0 mm | 3 | |
| Jan. 6 | Overcast | 12° /6° | 0 mm | 3 | |
| Jan. 7 |  Sunny | 15° /8° | 0 mm | 5 | |
| Jan. 8 |  Partly cloudy | 15° /7° | 0 mm | 5 | |
| Jan. 9 | Sunny | 18° /5° | 0 mm | 5 | |
| Jan. 10 | Sunny | 16° /5° | 0 mm | 5 | |
| Jan. 11 | Sunny | 15° /8° | 0 mm | 5 | |
| Jan. 12 | Sunny | 14° /6° | 0 mm | 4 | |
| Jan. 13 | Sunny | 13° /4° | 0 mm | 4 | |
| Jan. 14 | Sunny | 14° /3° | 0 mm | 4 | |
| Jan. 15 | Sunny | 15° /3° | 0 mm | 5 | |
| Jan. 16 | Sunny | 16° /3° | 0 mm | 5 | |
| Jan. 17 | Cloudy | 11° /2° | 0 mm | 3 | |
| Jan. 18 | Overcast | 12° /3° | 0 mm | 3 | |
| Jan. 19 | Cloudy | 13° /0° | 0 mm | 3 | |
| Jan. 20 | Overcast | 14° /3° | 0 mm | 3 | |
| Jan. 21 | Sunny | 13° /1° | 0 mm | 4 | |
| Jan. 22 | Sunny | 17° /1° | 0 mm | 5 | |
| Jan. 23 | Sunny | 17° /3° | 0 mm | 5 | |
| Jan. 24 | Overcast | 16° /3° | 0 mm | 4 | |
| Jan. 25 | Moderate rain at times | 12° /4° | 0.7 mm | 3 | |
| Jan. 26 | Overcast | 11° /4° | 0 mm | 3 | |
| Jan. 27 | Sunny | 14° /3° | 0 mm | 4 | |
| Jan. 28 | Sunny | 15° /1° | 0 mm | 5 | |
| Jan. 29 | Overcast | 9° /1° | 0 mm | 2 | |
| Jan. 30 | Overcast | 11° /1° | 0 mm | 3 | |
| Jan. 31 |  Moderate rain | 9° /6° | 8.8 mm | 2 | |
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Important Notice
Our weather forecast for Vacaville 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 Vacaville forecast closer to your planned date for the most up-to-date weather information.
Change Month
Vacaville in January - FAQ
What are the expected maximum and minimum temperatures in Vacaville during January?
Prepare for cooler days with highs just around 13° and colder nights, dipping below 4°.
How much rainfall should be expected in Vacaville during January?
In January, Vacaville can expect light to moderate rainfall, totaling 26.6 mm across approximately 4 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Vacaville during January?
The average wind speed in Vacaville during January is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
January rainfall patterns in Vacaville
Explore the daily rainfall trends and prepare for Vacavilles January weather 💧
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