Weather forecast for 10 daysUpper Lake, CA

Weather forecast for the weekend

Saturday Oct 17, 2026

  • min.
  • 48°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNNW 329°
  • Humidity: 31%
  • UV index: 0
  • Sunrise: 7:23 am PDT
  • Sunset: 6:30 pm PDT
  • ▼
In Upper Lake, for the rest of Saturday, calm and clear weather will dominate.
The lowest forecasted temperature is a chilly 48.2°F.
Sunrise was at 7:23 am and sunset will be at 6:30 pm; the daylight will last for 11h and 7min.

Sunday Oct 18, 2026

  • 81°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphWSW 254°
  • Humidity: 33%
  • UV index: 5
  • Sunrise: 7:24 am PDT
  • Sunset: 6:28 pm PDT
  • ▼
On Sunday, October 18, sunshine and minimal clouds are in the outlook.
A notable disparity in temperature is predicted, reaching up to a maximum of a moderately hot 80.6°F and falling to a minimum of a frosty 44.6°F.
Tomorrow, meteorological data suggests the high will feel more like September, based on a forecast of 80.6°F.
Sunrise will be at 7:24 am and sunset at 6:28 pm; tomorrow's daylight will last for 11h and 4min.

10-day overview

Daily temperatures

Warmest day: today 88°C.
Minimum temperature: 68°C.

Chance of precipitation

Highest chance: Tuesday 24%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 48°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNNW 329°
  • Humidity: 31%
  • UV index: 0
  • Sunrise: 7:23 am PDT
  • Sunset: 6:30 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 81°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphWSW 254°
  • Humidity: 33%
  • UV index: 5
  • Sunrise: 7:24 am PDT
  • Sunset: 6:28 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 45°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 7mphWNW 285°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 7:25 am PDT
  • Sunset: 6:27 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 73°F
  • 48°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 6mphSE 126°
  • Humidity: 50%
  • UV index: 3
  • Sunrise: 7:26 am PDT
  • Sunset: 6:25 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 72°F
  • 46°F
Cloudy
Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 4mphS 174°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:27 am PDT
  • Sunset: 6:24 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 72°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 7mphWSW 255°
  • Humidity: 66%
  • UV index: 4
  • Sunrise: 7:28 am PDT
  • Sunset: 6:23 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 72°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphW 268°
  • Humidity: 61%
  • UV index: 4
  • Sunrise: 7:29 am PDT
  • Sunset: 6:21 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 70°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 7mphSSW 192°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:31 am PDT
  • Sunset: 6:20 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 68°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 7mphS 173°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:32 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 68°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 7mphSSE 164°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:33 am PDT
  • Sunset: 6:17 pm PDT
  • ▼
Weather patterns suggest that a combination of gloomy and clear weather is forecasted.
Rain is not predicted in Upper Lake in the upcoming period.
Expect a substantial fluctuation in daytime highs in the upcoming days. The maximum temperature will vary between 68°F and 80.6°F, while the forecast minimum temperature falls between 37.4°F and 48.2°F.
The warmest day will be Sunday, with a maximum of 80.6°F; Monday, next Sunday and Monday, with the highest temperature of 68°F, will be the coldest days in Upper Lake.
Updated: Oct 17, 2026 @ 22:48:41 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, in Upper Lake, the outlook remains bright and sunny.

Tomorrow, the highest temperature will be 80.6°F, while the lowest temperature will be 44.6°F.
Tomorrow, the maximum temperature will be a couple of degrees higher than the average highest temperature in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in Upper Lake, sunrise will be at 7:24 am and sunset at 6:28 pm (PDT).

Tomorrow, the daylight will last for 11h and 4min.