Upper Lake (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Upper Lake.
Climate overview of Upper Lake
Upper Lake, California, United States of America, sees big temperature differences between seasons, with July peaking at 33°C (91°F) and December dropping to 12°C (54°F).
Upper Lake sees a moderate amount of rain/snowfall, totalling around 745 mm (29 in) per year. It experiences a distinct dry season from May to October, with very warm summers and mild winters, creating some seasonal variation. The most sunshine falls in May, with an average of 10.3 hours of daily sunshine.
Upper Lake Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Upper Lake - and find the best time to visit.
Monthly Temperature in Upper Lake
Visitors to Upper Lake can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a very warm 33°C (91°F) in July, the warmest time of the year, to a moderate 12°C (54°F) during cooler months like December.
At night, you can expect temperatures ranging from 12°C (54°F) in July to around 0°C (32°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Upper Lake
Generally, Upper Lake experiences moderate precipitation patterns, averaging 745 mm (29 in) yearly. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives heavy rainfall, averaging 172 mm (6.8 in) of precipitation, recorded across 15 rainy days. In contrast, the driest month August brings less rainfall, with 0.3 mm (0.01 in) over 0 rainy days. For more details, please visit our Upper Lake Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Upper Lake
Seasonal changes in sunshine hours are quite dramatic in Upper Lake. While May receives considerable daily sunshine with up to 10.3 hours, December marks the darkest time of the year, where sunshine is scarce with only 5.3 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Best Time to Visit Upper Lake
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, May, June and October
- Warmest weather: July and August
- Most sunshine: April, May, June and July
- Fewest rainy days: July, August and September
- Wettest months: January, February, March, November and December, when rainfall is highest.
- Seasonal pattern: a distinct dry season from May to October, with very warm summers and mild winters
Frequently asked questions about the climate in Upper Lake
What is the best time to visit Upper Lake?
April, May, June and October typically offer the most optimal weather in Upper Lake. In contrast, December tends to have less optimal conditions. Upper Lake has a distinct dry season from May to October, with very warm summers and mild winters.
What temperatures can I expect in Upper Lake?
Daytime highs range from 12°C (54°F) in December to 33°C (91°F) in July. Nighttime lows range from 0°C (32°F) to 12°C (54°F). Temperatures vary considerably through the year.
How much rain does Upper Lake get?
Annual rainfall is around 745 mm (29 in). December is the wettest month with 172 mm (6.8 in), while August is the driest with 0.3 mm (0.01 in).
How sunny is Upper Lake?
Upper Lake receives around 3,042 hours of sunshine per year. May is the sunniest month with 310 hours, while December is the cloudiest with just 160 hours. Overall, Upper Lake enjoys abundant sunshine.
Upper Lake 3-Day Forecast
Upper Lake (CA) 3-Day Forecast
Upper Lake on the map
Upper Lake is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.