10-Day Weather Forecast for Napa, CA - The Weather Channel | weather.com (2025)

Mon 17 | Day

A mix of clouds and sun. High near 60F. Winds W at 5 to 10 mph.

• Humidity59%

• UV Index3 of 11

• Sunrise6:56 am

• Sunset5:50 pm

Mon 17 | Night

Partly cloudy. Low near 40F. Winds light and variable.

• Humidity87%

• UV Index0 of 11

• Moonrise11:06 pm

  Waning Gibbous

• Moonset9:10 am

Tue 18 | Day

Partly cloudy skies. High around 65F. Winds W at 5 to 10 mph.

• Humidity66%

• UV Index4 of 11

• Sunrise6:55 am

• Sunset5:51 pm

Tue 18 | Night

Cloudy. Low near 45F. Winds light and variable.

• Humidity91%

• UV Index0 of 11

• Moonrise--

  Waning Gibbous

• Moonset9:34 am

Wed 19 | Day

Showers in the morning, then partly cloudy in the afternoon. High 62F. Winds SW at 5 to 10 mph. Chance of rain 50%.

• Humidity80%

• UV Index3 of 11

• Sunrise6:53 am

• Sunset5:52 pm

Wed 19 | Night

Clear. Low 41F. Winds light and variable.

• Humidity87%

• UV Index0 of 11

• Moonrise12:07 am

  Waning Gibbous

• Moonset10:02 am

Thu 20 | Day

Mostly sunny. High 69F. Winds NNW at 5 to 10 mph.

• Humidity51%

• UV Index4 of 11

• Sunrise6:52 am

• Sunset5:53 pm

Thu 20 | Night

Clear skies. Low around 40F. Winds light and variable.

• Humidity66%

• UV Index0 of 11

• Moonrise1:09 am

  Last Quarter

• Moonset10:35 am

Fri 21 | Day

Sunshine and clouds mixed. High 67F. Winds light and variable.

• Humidity53%

• UV Index4 of 11

• Sunrise6:51 am

• Sunset5:54 pm

Fri 21 | Night

Partly cloudy skies. Low 43F. Winds light and variable.

• Humidity81%

• UV Index0 of 11

• Moonrise2:12 am

  Waning Crescent

• Moonset11:16 am

Sat 22 | Day

Intervals of clouds and sunshine. High 69F. Winds light and variable.

• Humidity62%

• UV Index4 of 11

• Sunrise6:50 am

• Sunset5:55 pm

Sat 22 | Night

A few clouds from time to time. Low 46F. Winds light and variable.

• Humidity89%

• UV Index0 of 11

• Moonrise3:12 am

  Waning Crescent

• Moonset12:06 pm

Sun 23 | Day

Partly cloudy skies. High around 70F. Winds light and variable.

• Humidity72%

• UV Index4 of 11

• Sunrise6:48 am

• Sunset5:56 pm

Sun 23 | Night

A few clouds. Low 48F. Winds light and variable.

• Humidity92%

• UV Index0 of 11

• Moonrise4:08 am

  Waning Crescent

• Moonset1:06 pm

Mon 24 | Day

Partly cloudy skies. High 68F. Winds SW at 5 to 10 mph.

• Humidity74%

• UV Index4 of 11

• Sunrise6:47 am

• Sunset5:57 pm

Mon 24 | Night

Partly cloudy skies. Low 47F. Winds light and variable.

• Humidity93%

• UV Index0 of 11

• Moonrise4:56 am

  Waning Crescent

• Moonset2:14 pm

Tue 25 | Day

Partly cloudy skies. High near 70F. Winds W at 5 to 10 mph.

• Humidity66%

• UV Index4 of 11

• Sunrise6:45 am

• Sunset5:58 pm

Tue 25 | Night

A few clouds from time to time. Low 47F. Winds light and variable.

• Humidity88%

• UV Index0 of 11

• Moonrise5:38 am

  Waning Crescent

• Moonset3:27 pm

Wed 26 | Day

Partly to mostly cloudy. High 66F. Winds SW at 5 to 10 mph.

• Humidity72%

• UV Index4 of 11

• Sunrise6:44 am

• Sunset5:59 pm

Wed 26 | Night

Mainly cloudy. Low 47F. Winds light and variable.

• Humidity90%

• UV Index0 of 11

• Moonrise6:13 am

  Waning Crescent

• Moonset4:41 pm

Thu 27 | Day

Partly cloudy skies. High 67F. Winds W at 5 to 10 mph.

• Humidity66%

• UV Index4 of 11

• Sunrise6:43 am

• Sunset6:00 pm

Thu 27 | Night

A few clouds from time to time. Low 47F. Winds light and variable.

• Humidity84%

• UV Index0 of 11

• Moonrise6:43 am

  New Moon

• Moonset5:56 pm

Fri 28 | Day

Partly cloudy skies. High near 70F. Winds W at 5 to 10 mph.

• Humidity63%

• UV Index4 of 11

• Sunrise6:41 am

• Sunset6:01 pm

Fri 28 | Night

A few clouds from time to time. Low 49F. Winds light and variable.

• Humidity85%

• UV Index0 of 11

• Moonrise7:10 am

  Waxing Crescent

• Moonset7:11 pm

Sat 01 | Day

Partly cloudy. High 66F. Winds W at 5 to 10 mph.

• Humidity66%

• UV Index4 of 11

• Sunrise6:40 am

• Sunset6:02 pm

Sat 01 | Night

A few clouds. Low 48F. Winds WSW at 5 to 10 mph.

• Humidity84%

• UV Index0 of 11

• Moonrise7:37 am

  Waxing Crescent

• Moonset8:25 pm

Sun 02 | Day

Partly cloudy skies. High 64F. Winds W at 5 to 10 mph.

• Humidity62%

• UV Index4 of 11

• Sunrise6:38 am

• Sunset6:03 pm

Sun 02 | Night

Partly cloudy. Low 44F. Winds W at 5 to 10 mph.

• Humidity77%

• UV Index0 of 11

• Moonrise8:03 am

  Waxing Crescent

• Moonset9:41 pm

Mon 03 | Day

Sunshine and clouds mixed. High 62F. Winds WNW at 5 to 10 mph.

• Humidity54%

• UV Index4 of 11

• Sunrise6:37 am

• Sunset6:04 pm

Mon 03 | Night

Partly cloudy skies. Low 42F. Winds W at 5 to 10 mph.

• Humidity75%

• UV Index0 of 11

• Moonrise8:32 am

  Waxing Crescent

• Moonset10:57 pm