Napa weather live forecast

Today's maximum temperature in Napa is expected to be 27°C. Select a day from the live weather forecast for Napa, California, USA for more weather parameters.

Saturday
19th Sep
27

13

10

7
Sunday
20th Sep
22

13

4

5
Monday
21st Sep
22

13

6

7
Tuesday
22nd Sep
24

13

9

6
Wednesday
23rd Sep
29

13

10

6

5-day weather forecast updated at 04:01 on Saturday 19th September 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 Saturday 19th September 2026

Expect scattered clouds in Napa, California with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south-west.

27
°C maximum temperature
13
°C minimum temperature
scattered clouds
10
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
20
kph wind from SW

Napa weather for Sunday 20th September 2026

Expect broken clouds in Napa, California with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south-west.

22
°C maximum temperature
13
°C minimum temperature
broken clouds
4
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
17
kph wind from SW

Napa weather for Monday 21st September 2026

Expect broken clouds in Napa, California with a maximum temperature of 22°C, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south-west.

22
°C maximum temperature
13
°C minimum temperature
broken clouds
6
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
20
kph wind from SW

Napa weather for Tuesday 22nd September 2026

Expect broken clouds in Napa, California with a maximum temperature of 24°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the south-west.

24
°C maximum temperature
13
°C minimum temperature
broken clouds
9
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
19
kph wind from SW

Napa weather for Wednesday 23rd September 2026

Expect scattered clouds in Napa, California with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.