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Climate · Healdsburg

Healdsburg in September

Hot and dry, as the days shorten.

Typical weather, averaged over 30 years

September in Healdsburg is hot: highs near 87°F, lows near 58°F. Rain is rare, and the days shorten by 54 minutes from the first week to the last.September in Healdsburg is hot: highs near 31°C, lows near 14°C. Rain is rare, and the days shorten by 54 minutes from the first week to the last.

High
87°F31°Caverage
Low
58°F14°Caverage
Wet days
0a week · 4% of days
Daylight
12h 21mon average

Is September a good time to visit Healdsburg?

A good month, just outside Healdsburg's best months, which run in two parts: May, or October.

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 September sits in the year

week by week

Temperature

Highs near 87°F in September, against 60°F to 89°F through the year.Highs near 31°C in September, against 16°C to 32°C through the year.

Chance of a wet day

4% of days in September, against 0% to 37% through the year.

Cloud cover

17% cover in September, against 12% to 63% through the year.

Daylight

12h 21m in September, against 9h 31m to 14h 49m through the year.

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

Either side

  1. August89°32°low 59°low 15°no wet daysRain on fewer than one day a week.
  2. September87°31°low 58°low 14°no wet daysRain on fewer than one day a week.
  3. October80°27°low 54°low 12°1 wet day a weekRain on about one day a week.

Where Healdsburg sits, in September

America/Los Angeles
this place
typical high in September 40°F4°C95°F35°C
Sunrise, mid-September
6:52 AMsets 7:22 PM
Above the sea
90 mlow-lying
Latitude
38.6°Nnorthern hemisphere
Nearest of ours
Jenner36 km west

The land around Healdsburg, shaded by its typical high in September, 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 September

high · low · wet days
See September on the planning mapThe whole year in Healdsburg

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Healdsburg. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. 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.