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SunnyDays

California · STS

Napa weather this week

Napa, California Just your ID

Napa scores 9.4 out of 10 and has 9 genuinely clear days out of 16.

9.4/10
Genuinely clear
9 genuinely clear days, 0 partly cloudy, 2 overcast, 0 wet, 0 stormy — out of 16 forecast days.
Bright days 9 vs dull days 2. Bright wins.
Our model tiers this window Perfect, and the clear-day count supports that.

11-day window, zero rain — Sunshine, day after day — 11-days run, 9 genuinely clear, 93°F

The next 16 days in Napa

Every number below is the forecast we hold, rendered as text — nothing here is drawn on a canvas or filled in by JavaScript. The rain figure is the highest chance across all 16 days (16%), not the lowest, because the worst number is the useful one.

Booking window Tue 13 Oct–Fri 23 Oct: 9.4/10 for those days alone. The 16-day outlook score (9.4) covers the full table below and includes days outside that window.

Napa daily forecast, Thu 8 Oct to Fri 23 Oct (16 days total). Best single day scores 10.0; worst scores 7.0. A lone good day cannot carry the week.
Day High Low Rain chance Sky Day score
89°F 53°F 1% Fog cloudy 7.0
Hazy, 89°F — give it an hour.
75°F 55°F 1% Fog cloudy 7.0
Hazy, 75°F — give it an hour.
74°F 50°F 4% Clear clear 10.0
Clear skies, 74°F, zero drama.
76°F 44°F 6% Clear clear 10.0
Clear skies, 76°F, zero drama.
68°F 49°F 16% Overcast cloudy 7.9
Overcast, 68°F, toasty with a lid on.
73°F 51°F 3% Overcast cloudy 8.5
Overcast, 73°F, dry as a bone.
76°F 49°F 1% Overcast cloudy 8.5
Overcast, 76°F, dry as a bone.
80°F 52°F 1% Clear clear 10.0
Clear skies, 80°F, zero drama.
83°F 51°F 0% Clear clear 10.0
Clear skies, 83°F, zero drama.
82°F 54°F 1% Mainly clear clear 9.8
Clear skies, 82°F, zero drama.
82°F 53°F 1% Clear clear 10.0
Clear skies, 82°F, zero drama.
86°F 54°F 0% Clear clear 10.0
Clear skies, 86°F, zero drama.
93°F 57°F 0% Clear clear 9.1
Clear skies, 93°F — sunscreen is not optional.
92°F 59°F 3% Clear clear 9.3
Clear skies, 92°F — sunscreen is not optional.
90°F 60°F 6% Clear clear 9.6
Clear skies, 90°F — sunscreen is not optional.
88°F 53°F 6% Clear clear 10.0
Clear skies, 88°F, zero drama.

How this week got its score

  • 11 forecast days: 9 clear/mainly clear, 0 partly cloudy, 2 overcast, 0 wet (fog/drizzle/rain/showers), 0 stormy.
  • Trimmed mean of day scores 9.6 × 0.55 = 5.27
  • Worst day drag: worst day is 8.5 × 0.25 = 2.12 - one bad day cannot be averaged away.
  • Longest consecutive run of good days (≥7.0) is 11/11 = 100% coverage × 0.20 = 2.00
  • Best single day is 10.0 but it only counts through the trimmed mean - a lone great day cannot carry the window.

The full model, including why a single great day cannot rescue a bad week, is on the methodology page.

Getting to Napa

The nearest airport we price is STS. From New York City that is about 5h 36m in the air out of SWF, 2552 miles. Then about 38m to drive from CCR (est. 25 mi — road model, not real routing). Total door-to-lounger: 6h 14m. Flight times from 55 other departure metros are on the search page.

Where to stay in Napa

15 properties we currently hold live rates for, in supplier order. The nightly rate shown is what the supplier returned at the last refresh for the window above — it is a held rate, not a quote, and it moves.

So, should you go?

Napa scores 9.4 out of 10 and has 9 genuinely clear days out of 16. That holds up. Check the daily rows above for which specific days carry the sun, and price it from your own airport.

Frequently asked

Is it raining in Napa this week?

No. The current 16-day forecast for Napa shows no rain or storm days, peaking at 16% chance on the worst day. Cloud is not the dealbreaker here — rain is, and none is forecast.

How many clear days does Napa have this week?

9. Napa has 9 genuinely clear days out of the next 16.

Is Napa good for a trip this week?

Yes. Napa scores 9.4/10 with 9 genuinely clear days out of 16 — bright days outnumber dull ones.

Napa by month — 8-year ERA5 history

Historical clear-sky percentages from the ERA5 reanalysis (2018–2025). This is history, not a forecast — the 7-day forecast above is this week. They can and do differ.

Napa: clear-sky % by month, ERA5 2018–2025. n = days sampled.
Month Historically clear Sample (n)
January 1% n=248 all destinations →
February 10% n=226 all destinations →
March 9% n=248 all destinations →
April 42% n=240 all destinations →
May 70% n=248 all destinations →
June 94% n=240 all destinations →
July 98% n=248 all destinations →
August 96% n=248 all destinations →
September 86% n=240 all destinations →
October 73% n=248 all destinations →
November 18% n=240 all destinations →
December 0% n=248 all destinations →

Each month links to the detailed almanac page for Napa in that month. The “all destinations” column links to the full ranking across all destinations for that month.

Forecast data from Open-Meteo, last refreshed 2026-10-08T13:01:07.320349Z. Hotel names and rates come from LiteAPI and change constantly; the rate shown is the rate we held at refresh time, not a quote. Scores are forecasts, not guarantees, and the whole model is published on our methodology page.