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Climate · Napa

Napa in April

Warm and mostly dry, as the days lengthen.

Typical weather, averaged over 30 years

April in Napa is warm: highs near 73°F, lows near 47°F. Rain falls on about one day a week, less often as the month goes on, and the days lengthen by 51 minutes from the first week to the last.April in Napa is warm: highs near 23°C, lows near 8°C. Rain falls on about one day a week, less often as the month goes on, and the days lengthen by 51 minutes from the first week to the last.

High
73°F23°Caverage
Low
47°F8°Caverage
Wet days
1a week · 20% of days
Daylight
13h 10mon average

Is April a good time to visit Napa?

Yes. April is one of Napa's best months (April to May, or October to November).

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How April sits in the year

week by week

Temperature

Highs near 73°F in April, against 62°F to 92°F through the year.Highs near 23°C in April, against 17°C to 33°C through the year.

Chance of a wet day

20% of days in April, against 0% to 34% through the year.

Cloud cover

43% cover in April, against 11% to 59% through the year.

Daylight

13h 10m in April, against 9h 32m to 14h 47m through the year.

Week by week, lightly smoothed, with April shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. March68°20°low 44°low 7°2 wet days a weekRain on about two days a week.
  2. April73°23°low 47°low 8°1 wet day a weekRain on about one day a week.
  3. May81°27°low 52°low 11°1 wet day a weekRain on about one day a week.

Where Napa sits, in April

America/Los Angeles
this place
typical high in April 40°F4°C95°F35°C
Sunrise, mid-April
6:35 AMsets 7:44 PM
Above the sea
0 mlow-lying
Latitude
38.3°Nnorthern hemisphere
Nearest of ours
Marshall55 km west

The land around Napa, shaded by its typical high in April, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in United States in April

high · low · wet days
See April on the planning mapThe whole year in Napa

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Napa. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (0 m) against the climate model's (136 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (0 m) against the climate model's (136 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.