Vacaville Weather in January

In Vacaville, January brings moderate daytime temperatures around 15°C (59°F), with nights cooling to 3°C (37°F). Expect quite a bit of rainfall this month.

Rainfall in Vacaville in January

Historically, the month has about 8 days of rain, averaging 85 mm (3.3 in) in total. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Vacaville in January

January in Vacaville brings moderate temperatures, with highs of 15°C (59°F) and nights around 3°C (37°F). January is in the winter season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to 3°C (37°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Vacaville in January

The month brings about 145 hours of sunlight, offering a comfortable mix of sun and overcast.

If your ideal day consists of dry skies and pleasant temperatures, April, May and October typically offer the best circumstances for Vacaville.

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• January
• February
• March
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• May
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• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Vacaville's climate page.

Vacaville Temperature in January

Min Temperature 3°C (37°F)  

Max Temperature 15°C (59°F)  

Chance of Rain 27%  

Precipitation 85 mm (3.3 in)  

Rainy days 8 days  

Humidity 83% *  

Sunshine 145 hours *  

Percentage Sunshine 48% *  

* Data from: Sacramento, the United States of America (49 KM, 30 Miles).

What to Wear in Vacaville in January

The weather can be unpredictable in January, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Vacaville in January

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Vacaville's climate page.

More climate data for Vacaville

Temperature Rainfall Sunshine Humidity

See the full Vacaville climate overview or explore weather in the United States of America.