Napa weather live forecast

Today's maximum temperature in Napa is expected to be 31°C. Select a day from the live weather forecast for Napa, California, USA for more weather parameters.

Wednesday
18th Mar
31

14

12

6
Thursday
19th Mar
31

13

12

6
Friday
20th Mar
31

14

12

7
Saturday
21st Mar
27

13

9

6
Sunday
22nd Mar
25

12

10

6

5-day weather forecast updated at 04:01 on Wednesday 18th March 2026 GMT

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The 5-day weather forecast for California (Napa) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Napa weather forecast by day

Below are the detailed weather forecasts for Napa for the next 5 days.

Napa weather for Wednesday 18th March 2026

Expect clear skies in Napa, California with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south-west.

31
°C maximum temperature
14
°C minimum temperature
clear skies
12
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
7
kph wind from SW

Napa weather for Thursday 19th March 2026

31
°C maximum temperature
13
°C minimum temperature
clear skies
12
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
8
kph wind from W

Napa weather for Friday 20th March 2026

Expect clear skies in Napa, California with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the south-west.

31
°C maximum temperature
14
°C minimum temperature
clear skies
12
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
9
kph wind from SW

Napa weather for Saturday 21st March 2026

Expect scattered clouds in Napa, California with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the west.

27
°C maximum temperature
13
°C minimum temperature
scattered clouds
9
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
16
kph wind from W

Napa weather for Sunday 22nd March 2026

Expect broken clouds in Napa, California with a maximum temperature of 25°C, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the west.