Napa

Napa Valley Weather in January

Average temperatures, rainfall, sunshine and the best places to visit in the Napa Valley, the United States of America in January.

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Napa Calistoga St. Helena Yountville

Planning a getaway to the Napa Valley, the United States of America this January and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in the Napa Valley in January

The Napa Valley, the United States of America is a region in the United States of America. January in the Napa Valley generally has mild temperatures, with precipitation levels ranging from moderate to high. It's the height of winter.

Temperatures

You can expect mild maximum daytime temperatures of around 15°C (59°F) and nighttime temperatures around 4°C (39°F) in Napa.

For specific regional insights in the Napa Valley, the United States of America, refer to the map provided below.

Precipitation

In January, precipitation varies across different areas. From moderate rainfall in American Canyon with an average of 79 mm (3.1 in) to high rainfall in Calistoga with 132 mm (5.2 in).

Average sunshine

Many locations offer abundant sunshine during this month. For instance, Napa enjoys approximately 190 hours of sunlight, ideal for those seeking sunny weather.

Explore the Napa Valley by month

Pick a month to see the average temperature, rainfall and sunshine in the Napa Valley - and find the best time to visit. (based on Napa)

January15°C (59°F) February17°C (63°F) March19°C (66°F) April22°C (72°F) May25°C (77°F) June28°C (82°F) This monthJuly29°C (84°F) August29°C (84°F) September30°C (86°F) October26°C (79°F) November19°C (66°F) December14°C (57°F)
Best Time to Visit the Napa Valley →

Best Places to Visit in the Napa Valley in January

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across the Napa Valley.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in the Napa Valley

What is the weather like in January for some of the most popular destinations in the Napa Valley, the United States of America?

Temperature range in the Napa Valley (January)

Precipitation variation in the Napa Valley (January)

Napa

In January Napa generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 4°C (39°F) and moderate monthly rainfall. So on average the conditions are good that month.

« December
January
February »
December
January
February
Max temperature
14°C (57°F)
15°C (59°F)
17°C (63°F)
Min temperature
4°C (39°F)
4°C (39°F)
5°C (41°F)
Monthly sun hours
160 hours
190 hours
201 hours
Monthly rainfall
120 mm (4.7 in)
91 mm (3.6 in)
106 mm (4.2 in)
Monthly rainy days
11 days
9 days
9 days
Weather conditions
mixed
good
mixed
Climate in Napa →

Calistoga

In January Calistoga generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 4°C (39°F) and high monthly rainfall. So on average the conditions are mixed that month.

« December
January
February »
December
January
February
Max temperature
14°C (57°F)
15°C (59°F)
17°C (63°F)
Min temperature
3°C (37°F)
4°C (39°F)
4°C (39°F)
Monthly sun hours
160 hours
190 hours
201 hours
Monthly rainfall
183 mm (7.2 in)
132 mm (5.2 in)
158 mm (6.2 in)
Monthly rainy days
13 days
9 days
10 days
Weather conditions
less favorable
mixed
mixed
Climate in Calistoga →

St. Helena

In January St. Helena generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 4°C (39°F) and high monthly rainfall. So on average the conditions are mixed that month.

« December
January
February »
December
January
February
Max temperature
14°C (57°F)
16°C (61°F)
17°C (63°F)
Min temperature
4°C (39°F)
4°C (39°F)
5°C (41°F)
Monthly sun hours
160 hours
190 hours
201 hours
Monthly rainfall
175 mm (6.9 in)
125 mm (4.9 in)
155 mm (6.1 in)
Monthly rainy days
14 days
10 days
10 days
Weather conditions
mixed
mixed
mixed
Climate in St. Helena →

Yountville

In January Yountville generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 3°C (37°F) and high monthly rainfall. So on average the conditions are mixed that month.

« December
January
February »
December
January
February
Max temperature
14°C (57°F)
15°C (59°F)
17°C (63°F)
Min temperature
3°C (37°F)
3°C (37°F)
5°C (41°F)
Monthly sun hours
160 hours
190 hours
201 hours
Monthly rainfall
139 mm (5.5 in)
103 mm (4.1 in)
122 mm (4.8 in)
Monthly rainy days
12 days
9 days
10 days
Weather conditions
mixed
mixed
mixed
Climate in Yountville →

American Canyon

In January American Canyon generally has moderate temperatures with maximum daytime temperatures around 14°C (57°F), minimum nighttime temperatures around 3°C (37°F) and moderate monthly rainfall. So on average the conditions are good that month.

« December
January
February »
December
January
February
Max temperature
14°C (57°F)
14°C (57°F)
17°C (63°F)
Min temperature
4°C (39°F)
3°C (37°F)
5°C (41°F)
Monthly sun hours
160 hours
186 hours
209 hours
Monthly rainfall
101 mm (4 in)
79 mm (3.1 in)
87 mm (3.4 in)
Monthly rainy days
12 days
9 days
9 days
Weather conditions
mixed
good
good
Climate in American Canyon →

Is your destination not in the list? Have a look at all destinations in the Napa Valley, in the United States of America.

Popular cities in January

Day & night temperatures, rainfall and average weather in the Napa Valley in January.

City Weather Day temp Night temp Rainfall
Napa 15°C (59°F) 4°C (39°F) 91 mm (3.6 in)
Calistoga 15°C (59°F) 4°C (39°F) 132 mm (5.2 in)
St. Helena 16°C (61°F) 4°C (39°F) 125 mm (4.9 in)
Yountville 15°C (59°F) 3°C (37°F) 103 mm (4.1 in)
American Canyon 14°C (57°F) 3°C (37°F) 79 mm (3.1 in)

The Napa Valley weather in January: frequently asked questions

What is the weather like in the Napa Valley, the United States of America in January?

the Napa Valley, the United States of America typically experiences good weather in January, part of the winter season. Daytime highs in Napa average around 15°C (59°F), and temperatures drop to about 4°C (39°F) at night.

What is the average temperature in the Napa Valley, the United States of America in January?

Napa averages a daytime maximum of 15°C (59°F) in January, with overnight lows close to 4°C (39°F).

Does the Napa Valley, the United States of America get a lot of rain in January?

Rain is generally moderate to light in the Napa Valley, the United States of America during January, with Napa averaging close to 91 mm (3.6 in).

Is January a Good Time to Visit the Napa Valley, the United States of America?

In our opinion, January is a good time to visit the Napa Valley, the United States of America with overall good weather in Napa. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, the best visiting conditions can be found in April, May, June, July, August and October offering mostly excellent weather in Napa. In contrast, February and December tend to have mixed weather conditions.

Interested in more climate information?

We have much more information about the climate in the Napa Valley.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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