Healdsburg Weather in December
Healdsburg in December sees moderate daytime temperatures of 14°C (57°F) and nighttime lows of 4°C (39°F). With the highest rainfall of the year it is wise to pack an umbrella and expect frequent showers.
Rainfall in Healdsburg in December
The month brings the heaviest rain of the year, often in intense bursts. Make sure to have a poncho to stay dry during the showers. On average, there are about 13 days with rain during this month, averaging 198 mm (7.8 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Healdsburg in December
Daytime highs in Healdsburg in December reach 14°C (57°F), with nights around 4°C (39°F). December is typically considered a winter month. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 4°C (39°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions. Experience the year's most moderate temperatures in December.
Sunshine in Healdsburg in December
With about 160 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.December in Healdsburg has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Healdsburg's climate page.
Healdsburg Temperature in December
Min Temperature
4°C (39°F)
Max Temperature
14°C (57°F)
Chance of Rain
44%
Precipitation
198 mm (7.8 in)
Rainy days
13 days
Sunshine
160 hours
Percentage Sunshine
55%
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Healdsburg typically stay consistent throughout December, with daily highs averaging around 14°C (57°F). Nights are cold, with lows typically ranging from 2°C (36°F) to 5°C (41°F).
Average temperatures in December
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Healdsburg in December
Browse day-by-day weather records for Healdsburg spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Healdsburg historical weather extremes in December
Based on 28 years of weather observations (1997-2025), these are the most extreme conditions recorded in Healdsburg.
- On December 16, 2013, temperatures climbed to 27°C (81°F), marking the warmest December day on record.
- Healdsburg experienced its chilliest December day on December 16, 2005, reaching only 6°C (43°F).
- The coldest night in December in Healdsburg was on December 9, 2013, with a minimum of -7°C (19°F).
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
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What to Wear in Healdsburg in December
The weather can swing between comfortable and chilly in December, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. It's going to pour! Pack a good poncho and prepare for very wet conditions. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Healdsburg in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Healdsburg's climate page.
See the full Healdsburg climate overview or explore weather in the United States of America.
