Weather forecast for 10 daysLake Nacimiento, CA

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 88°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 12mphW 263°
  • Humidity: 33%
  • UV index: 5
  • Sunrise: 7:13 am PDT
  • Sunset: 6:24 pm PDT
  • ▼
Today, sunshine and minimal clouds are in the outlook.
A significant variation in temperature is anticipated, ranging from a high of a hot 87.8°F to a low of a frosty 44.6°F.
Today, climate comparisons show a temperature closer to September's 84.2°F than October's 75.7°F.
Sunrise was at 7:13 am and sunset will be at 6:24 pm; the daylight will last for 11h and 11min.

10-day overview

Daily temperatures

Warmest day: today 88°C.
Coldest day: Wednesday 64°C.

Chance of precipitation

Highest chance: Wednesday 80%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 88°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 12mphW 263°
  • Humidity: 33%
  • UV index: 5
  • Sunrise: 7:13 am PDT
  • Sunset: 6:24 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 79°F
  • 46°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 12mphW 271°
  • Humidity: 51%
  • UV index: 5
  • Sunrise: 7:14 am PDT
  • Sunset: 6:23 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 72°F
  • 52°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.28"
  • Wind: 11mphSSW 199°
  • Humidity: 61%
  • UV index: 5
  • Sunrise: 7:15 am PDT
  • Sunset: 6:21 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 64°F
  • 50°F
Rain
Rain
  • Precip. probability: 80%
  • Precipitation: 0.47"
  • Wind: 7mphS 175°
  • Humidity: 80%
  • UV index: 3
  • Sunrise: 7:15 am PDT
  • Sunset: 6:20 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 68°F
  • 46°F
Showers
Showers
  • Precip. probability: 40%
  • Precipitation: 0.08"
  • Wind: 10mphWNW 292°
  • Humidity: 75%
  • UV index: 5
  • Sunrise: 7:16 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 72°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 9mphNNW 337°
  • Humidity: 66%
  • UV index: 5
  • Sunrise: 7:17 am PDT
  • Sunset: 6:18 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 77°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphNNW 342°
  • Humidity: 54%
  • UV index: 5
  • Sunrise: 7:18 am PDT
  • Sunset: 6:17 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 75°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 9mphNW 304°
  • Humidity: 51%
  • UV index: 5
  • Sunrise: 7:19 am PDT
  • Sunset: 6:15 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 73°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 10mphW 275°
  • Humidity: 53%
  • UV index: 5
  • Sunrise: 7:20 am PDT
  • Sunset: 6:14 pm PDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 73°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 9mphWNW 292°
  • Humidity: 53%
  • UV index: 5
  • Sunrise: 7:21 am PDT
  • Sunset: 6:13 pm PDT
  • ▼
During the ten-day period, mostly clear, overcast and rain-soaked weather is anticipated.
Rainfall is expected on Tuesday through Thursday.
Expect a substantial fluctuation in daytime highs in the next ten days. Forecast highs will fluctuate between 64.4°F and 87.8°F, while the low temperature range extends from 44.6°F to 51.8°F.
With a high of 87.8°F, today is the hottest day; with the highest temperature of 64.4°F, Wednesday will be the coldest day.
Updated: Oct 18, 2026 @ 14:20:12 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, skies will stay clear and sunny.

Today, the highest temperature will be 87.8°F, while the lowest temperature will be 44.6°F.
Today, the maximum temperature will be uncommonly higher than the average highest temperature of 75.7°F in October. The lowest temperature will be also noticeably lower than the average low of 54.5°F.

On Sunday, in Lake Nacimiento, sunrise was at 7:13 am and sunset will be at 6:24 pm (PDT).

Today, the daylight will last for 11h and 11min.