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SunnyDays

California · STS

Sonoma weather this week

Sonoma, California Just your ID

Sonoma scores 8.7 out of 10 and has 3 genuinely clear days out of 16.

8.7/10
Partly clear
3 genuinely clear days, 2 partly cloudy, 3 overcast, 0 wet, 0 stormy — out of 16 forecast days.
Bright days 5 vs dull days 3. Bright wins.
Our model tiers this window Excellent, and the clear-day count supports that.

8-day window, zero rain — Sunshine, day after day — 8-days run, 3 genuinely clear, 2 partly cloudy — 96°F peaks

The next 16 days in Sonoma

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 (6%), not the lowest, because the worst number is the useful one.

Booking window Tue 6 Oct–Tue 13 Oct: 8.7/10 for those days alone. The 16-day outlook score (8.7) covers the full table below and includes days outside that window.

Sonoma daily forecast, Mon 28 Sep to Tue 13 Oct (16 days total). Best single day scores 10.0; worst scores 5.9. A lone good day cannot carry the week.
Day High Low Rain chance Sky Day score
82°F 46°F 0% Fog cloudy 7.0
Hazy, 82°F — give it an hour.
96°F 53°F 0% Clear clear 8.7
Clear skies, 96°F — sunscreen is not optional.
94°F 56°F 0% Clear clear 9.1
Clear skies, 94°F — sunscreen is not optional.
90°F 55°F 0% Clear clear 9.7
Clear skies, 90°F — sunscreen is not optional.
94°F 57°F 0% Overcast cloudy 7.5
Overcast, 94°F, toasty with a lid on.
96°F 63°F 1% Overcast cloudy 7.3
Overcast, 96°F, toasty with a lid on.
96°F 63°F 1% Overcast cloudy 7.2
Overcast, 96°F, toasty with a lid on.
100°F 65°F 1% Light drizzle cloudy 5.9
Overcast, 100°F, toasty with a lid on.
96°F 68°F 1% Overcast cloudy 7.3
Overcast, 96°F, toasty with a lid on.
96°F 66°F 2% Partly cloudy partly 8.1
Partly cloudy, 96°F, not a drop of rain.
94°F 62°F 3% Clear clear 9.1
Clear skies, 94°F — sunscreen is not optional.
89°F 56°F 3% Clear clear 9.8
Clear skies, 89°F — sunscreen is not optional.
84°F 54°F 3% Clear clear 10.0
Clear skies, 84°F, zero drama.
82°F 55°F 6% Overcast cloudy 8.5
Overcast, 82°F, dry as a bone.
85°F 55°F 6% Overcast cloudy 8.5
Overcast, 85°F, dry as a bone.
89°F 54°F 3% Partly cloudy partly 9.1
Partly cloudy, 89°F, not a drop of rain.

How this week got its score

  • 8 forecast days: 3 clear/mainly clear, 2 partly cloudy, 3 overcast, 0 wet (fog/drizzle/rain/showers), 0 stormy.
  • Trimmed mean of day scores 8.8 × 0.55 = 4.87
  • Worst day drag: worst day is 7.3 × 0.25 = 1.82 - one bad day cannot be averaged away.
  • Longest consecutive run of good days (≥7.0) is 8/8 = 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 Sonoma

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 STS (est. 24 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 Sonoma

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?

Sonoma scores 8.7 out of 10 and has 3 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 Sonoma this week?

No. The current 16-day forecast for Sonoma shows no rain or storm days, peaking at 6% chance on the worst day. Cloud is not the dealbreaker here — rain is, and none is forecast.

How many clear days does Sonoma have this week?

3. Sonoma has 3 genuinely clear days out of the next 16.

Is Sonoma good for a trip this week?

Yes. Sonoma scores 8.7/10 with 3 genuinely clear days out of 16 — bright days outnumber dull ones.

Sonoma 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.

Sonoma: clear-sky % by month, ERA5 2018–2025. n = days sampled.
Month Historically clear Sample (n)
January 1% n=248 all destinations →
February 8% n=226 all destinations →
March 8% n=248 all destinations →
April 32% n=240 all destinations →
May 61% n=248 all destinations →
June 90% n=240 all destinations →
July 96% n=248 all destinations →
August 95% n=248 all destinations →
September 86% n=240 all destinations →
October 68% n=248 all destinations →
November 16% n=240 all destinations →
December 0% n=248 all destinations →

Each month links to the detailed almanac page for Sonoma 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 2026-09-28T13:02:01.701596Z. 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.