Weather forecast for tomorrowUpper Lake, CA

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 82°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphWSW 258°
  • Humidity: 34%
  • UV index: 5
  • Sunrise: 7:24 am PDT
  • Sunset: 6:28 pm PDT
  • ▼
On Sunday, in Upper Lake, expect bright skies and plenty of sunshine.
Day and night temperatures will contrast sharply, ranging from a peak of a temperate 82.4°F to a low of a frosty 44.6°F.
The warmer conditions bring a maximum of 82.4°F, more representative of September than October.
Sunrise will be at 7:24 am and sunset at 6:28 pm; tomorrow's daylight will last for 11h and 4min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 81°C.
Coldest hour: 6 am 52°C.

Chance of precipitation

Highest chance: 9 pm 4%.

Hourly weather forecast

  • 12 am
  • 59°F
  • Feels like:
    59°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 1mphNNW 346°
  • Humidity: 38%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 55°F
  • Feels like:
    55°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 1mphN 3°
  • Humidity: 43%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 54°F
  • Feels like:
    54°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphNW 326°
  • Humidity: 47%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 52°F
  • Feels like:
    52°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 1mphNNW 341°
  • Humidity: 51%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:24 am
  • 8 am
  • 50°F
  • Feels like:
    50°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 0mphNW 313°
  • Humidity: 55%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 64°F
  • Feels like:
    64°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 1mphWSW 257°
  • Humidity: 40%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 73°F
  • Feels like:
    73°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphSW 230°
  • Humidity: 27%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 79°F
  • Feels like:
    79°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphWSW 252°
  • Humidity: 22%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 79°F
  • Feels like:
    79°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphW 259°
  • Humidity: 22%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 6 pm
  • 72°F
  • Feels like:
    72°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphW 261°
  • Humidity: 34%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:28 pm
  • 8 pm
  • 63°F
  • Feels like:
    63°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 4mphWNW 282°
  • Humidity: 51%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 55°F
  • Feels like:
    55°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 3mphWNW 282°
  • Humidity: 66%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, sunshine is expected.
The temperature will be between the lowest temperature of 50°F and the highest temperature of 80.6°F. The warmest part of the day is anticipated around 3 pm.
The day’s peak temperature will reflect September's norm of 84.2°F more than October's 72.5°F. The night temperature will be close to the standard October low of 48°F.
Updated: Oct 18, 2026 @ 00:28:40 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, expect consistent sunshine and open skies.

Tomorrow, the maximum temperature will be 82.4°F, while the minimum temperature will be 44.6°F.
The maximum temperature will be notably higher than the average highest temperature of 72.5°F in October. Tomorrow, the lowest temperature 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).

In Upper Lake, the length of the day tomorrow will be 11h and 4min.