Upper Lake Weather in December

Thinking of visiting Upper Lake in December? Expect moderate temperatures reaching 12°C (54°F) during the day, dropping to 0°C (32°F) at night, and be prepared for the wettest month of the year.

Rainfall in Upper Lake in December

Expect the heaviest rain of the year this month, often arriving in intense bursts. A poncho is essential for keeping dry. Typically, about 15 days will experience rainfall, with an average of 172 mm (6.8 in) for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.

Temperature in Upper Lake in December

In December, Upper Lake gets moderate temperatures, with highs of 12°C (54°F). Nights cool to around 0°C (32°F). December marks the winter season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights fall to 0°C (32°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep. The temperatures in December are often the mildest compared to the rest of the year.

Sunshine in Upper Lake in December

You can expect a moderate amount of sunlight, with approximately 160 hours. This means a pleasant mix of sun and overcast.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Upper Lake. Our weather planner can help you explore destinations with more pleasant weather conditions.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Upper Lake's climate page.

Upper Lake Temperature in December

Min Temperature 0°C (32°F)  

Max Temperature 12°C (54°F)  

Chance of Rain 50%  

Precipitation 172 mm (6.8 in)  

Rainy days 15 days  

Sunshine 160 hours *  

Percentage Sunshine 55% *  

* Data from: Healdsburg, the United States of America (61 KM, 38 Miles).

What to Wear in Upper Lake in December

The weather can be unpredictable in December, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Upper Lake in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

3/10

Outdoor sports

5/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Upper Lake's climate page.

More climate data for Upper Lake

Temperature Rainfall Sunshine

See the full Upper Lake climate overview or explore weather in the United States of America.