Weather forecast for 10 daysUpper Lake, CA

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 88°F
  • 48°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphW 259°
  • Humidity: 12%
  • UV index: 4
  • Sunrise: 7:23 am PDT
  • Sunset: 6:30 pm PDT
  • ▼
Today, expect sunny weather with a crisp, clear sky.
The day will see a remarkable high of a tropical 87.8°F, sharply contrasting with a low of a chilly 48.2°F.
Today, the weather pattern will resemble September more than October, with a forecast high of 87.8°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 248°
  • Humidity: 33%
  • UV index: 5
  • Sunrise: 7:24 am PDT
  • Sunset: 6:28 pm PDT
  • ▼
Tomorrow, in Upper Lake, skies are expected to be clear and full of sunshine.
A daytime temperature reaching up to a temperate 80.6°F will sharply contrast with a nighttime low 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
  • 88°F
  • 48°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphW 259°
  • Humidity: 12%
  • UV index: 4
  • 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 248°
  • Humidity: 33%
  • UV index: 5
  • Sunrise: 7:24 am PDT
  • Sunset: 6:28 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 46°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 10%
  • Precipitation: 0"
  • Wind: 7mphW 281°
  • Humidity: 58%
  • UV index: 4
  • 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 129°
  • Humidity: 49%
  • 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: 21%
  • Precipitation: 0"
  • Wind: 4mphS 173°
  • 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: 17%
  • 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 267°
  • 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
  • ▼
During the upcoming ten-day period, a combination of cloudy and sunny weather is predicted.
Rainfall is not expected in Upper Lake in the upcoming period.
Temperature differences will be noticeable in the next ten days. The temperature is expected to swing from 68°F up to 87.8°F, while the low temperature range extends from 37.4°F to 48.2°F.
The hottest day is today, with a maximum temperature of 87.8°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 @ 21:26:12 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, skies will stay clear and sunny.

Today, the maximum temperature will be 87.8°F, while the minimum temperature will be 48.2°F.
The maximum temperature today will be uncommonly higher than the average highest temperature of 72.5°F in October. The lowest temperature will be in line with the average low of 48°F.

On Saturday, in Upper Lake, sunrise was at 7:23 am and sunset will be at 6:30 pm (PDT).

In Upper Lake, the length of the day today will be 11h and 7min.

On Sunday, in Upper Lake, the weather remains calm, bright, and sunny.

Tomorrow, the maximum temperature will be 80.6°F, while the minimum temperature will be 44.6°F.
The maximum temperature will be relatively higher than the average highest temperature of 72.5°F 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.