Napa

Napa Valley Weather in March

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

Thinking about venturing to the Napa Valley, the United States of America this March and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What to Expect in the Napa Valley in March

The Napa Valley, the United States of America is a region in the United States of America. March in the Napa Valley generally has pleasant temperatures, with precipitation levels ranging from moderate to high.

Temperatures

You can expect pleasant maximum daytime temperatures of around 19°C (66°F) and nighttime temperatures around 6°C (43°F) in Napa.

To explore the conditions in the Napa Valley, the United States of America in more detail, check the map below.

Precipitation

In March, 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 149 mm (5.9 in).

Average sunshine

Sunshine is generally plentiful throughout many areas. Napa enjoys about 270 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)

Best Places to Visit in the Napa Valley in March

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

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 March for some of the most popular destinations in the Napa Valley, the United States of America?

Temperature range in the Napa Valley (March)

Precipitation variation in the Napa Valley (March)

Napa

In March Napa generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 6°C (43°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

February
March
April
Max temperature
17°C (63°F)
19°C (66°F)
22°C (72°F)
Min temperature
5°C (41°F)
6°C (43°F)
7°C (45°F)
Monthly sun hours
201 hours
270 hours
305 hours
Monthly rainfall
106 mm (4.2 in)
93 mm (3.7 in)
50 mm (2 in)
Monthly rainy days
9 days
10 days
7 days
Weather conditions

Calistoga

In March Calistoga generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 6°C (43°F) and high monthly rainfall. So on average the conditions are tolerable that month.

February
March
April
Max temperature
17°C (63°F)
18°C (64°F)
21°C (70°F)
Min temperature
4°C (39°F)
6°C (43°F)
7°C (45°F)
Monthly sun hours
201 hours
270 hours
305 hours
Monthly rainfall
158 mm (6.2 in)
149 mm (5.9 in)
70 mm (2.8 in)
Monthly rainy days
10 days
12 days
8 days
Weather conditions

St. Helena

In March St. Helena generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 6°C (43°F) and high monthly rainfall. So on average the conditions are tolerable that month.

February
March
April
Max temperature
17°C (63°F)
19°C (66°F)
22°C (72°F)
Min temperature
5°C (41°F)
6°C (43°F)
8°C (46°F)
Monthly sun hours
201 hours
270 hours
305 hours
Monthly rainfall
155 mm (6.1 in)
138 mm (5.4 in)
56 mm (2.2 in)
Monthly rainy days
10 days
12 days
8 days
Weather conditions

Yountville

In March Yountville generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 6°C (43°F) and high monthly rainfall. So on average the conditions are tolerable that month.

February
March
April
Max temperature
17°C (63°F)
19°C (66°F)
22°C (72°F)
Min temperature
5°C (41°F)
6°C (43°F)
7°C (45°F)
Monthly sun hours
201 hours
270 hours
305 hours
Monthly rainfall
122 mm (4.8 in)
113 mm (4.4 in)
53 mm (2.1 in)
Monthly rainy days
10 days
11 days
7 days
Weather conditions

American Canyon

In March American Canyon generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 6°C (43°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

February
March
April
Max temperature
17°C (63°F)
18°C (64°F)
20°C (68°F)
Min temperature
5°C (41°F)
6°C (43°F)
7°C (45°F)
Monthly sun hours
209 hours
270 hours
310 hours
Monthly rainfall
87 mm (3.4 in)
79 mm (3.1 in)
48 mm (1.9 in)
Monthly rainy days
9 days
10 days
7 days
Weather conditions

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 March

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

City Weather Day temp Night temp Rainfall
Napa 19°C (66°F) 6°C (43°F) 93 mm (3.7 in)
Calistoga 18°C (64°F) 6°C (43°F) 149 mm (5.9 in)
St. Helena 19°C (66°F) 6°C (43°F) 138 mm (5.4 in)
Yountville 19°C (66°F) 6°C (43°F) 113 mm (4.4 in)
American Canyon 18°C (64°F) 6°C (43°F) 79 mm (3.1 in)

The Napa Valley weather in March: frequently asked questions

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

In March, the Napa Valley, the United States of America generally has pleasant weather conditions. Napa sees daytime temperatures near 19°C (66°F), with nights cooling to roughly 6°C (43°F).

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

Daytime temperatures in Napa peak at roughly 19°C (66°F) in March, dropping to about 6°C (43°F) overnight.

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

March is on the drier side in the Napa Valley, the United States of America. Napa averages only about 93 mm (3.7 in), with most days staying dry.

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

Given the typically pleasant weather conditions in Napa, March might be a good time to visit the Napa Valley, the United States of America. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, April, May, June, July, August and October provide perfect weather in Napa. On the other hand, the months of February and December tend to have unpleasant 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.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.