Weather forecast for 10 daysFallbrook, CA

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 86°F
  • 63°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 12mphENE 78°
  • Humidity: 20%
  • UV index: 4
  • Sunrise: 6:55 am PDT
  • Sunset: 6:13 pm PDT
  • ▼
Today, in Fallbrook, expect cloudy weather in the morning, but skies will gradually clear, allowing for plenty of sunshine later.
The temperature will vary between a maximum of a humid 86°F and a minimum of a comfortable 62.6°F.
Today, meteorological data suggests the high will feel more like September, based on a forecast of 86°F.
Sunrise was at 6:55 am and sunset will be at 6:13 pm; the daylight will last for 11h and 18min.

Sunday Oct 18, 2026

  • 86°F
  • 59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphWNW 303°
  • Humidity: 29%
  • UV index: 6
  • Sunrise: 6:56 am PDT
  • Sunset: 6:12 pm PDT
  • ▼
On Sunday, October 18, expect bright skies and plenty of sunshine.
Dramatic temperature shifts from a high of a tropical 86°F to a low of a mild 59°F are predicted.
The hotter conditions bring a maximum of 86°F, more representative of September than October.
Sunrise will be at 6:56 am and sunset at 6:12 pm; tomorrow's daylight will last for 11h and 16min.

10-day overview

Daily temperatures

Warmest period: today - tomorrow 86°C.
Coldest day: Thursday 66°C.

Chance of precipitation

Highest chance: Thursday 83%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 86°F
  • 63°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 12mphENE 78°
  • Humidity: 20%
  • UV index: 4
  • Sunrise: 6:55 am PDT
  • Sunset: 6:13 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 86°F
  • 59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphWNW 303°
  • Humidity: 29%
  • UV index: 6
  • Sunrise: 6:56 am PDT
  • Sunset: 6:12 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 84°F
  • 59°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 10mphSSW 208°
  • Humidity: 44%
  • UV index: 6
  • Sunrise: 6:56 am PDT
  • Sunset: 6:10 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 81°F
  • 55°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 9mphSSW 208°
  • Humidity: 55%
  • UV index: 6
  • Sunrise: 6:57 am PDT
  • Sunset: 6:09 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 77°F
  • 59°F
Showers
Showers
  • Precip. probability: 55%
  • Precipitation: 0.43"
  • Wind: 11mphS 182°
  • Humidity: 63%
  • UV index: 5
  • Sunrise: 6:58 am PDT
  • Sunset: 6:08 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 66°F
  • 55°F
Thunderstorms
Thunderstorms
  • Precip. probability: 83%
  • Precipitation: 0.31"
  • Wind: 9mphS 189°
  • Humidity: 78%
  • UV index: 4
  • Sunrise: 6:59 am PDT
  • Sunset: 6:07 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 72°F
  • 55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 14%
  • Precipitation: 0"
  • Wind: 7mphSW 225°
  • Humidity: 68%
  • UV index: 6
  • Sunrise: 7:00 am PDT
  • Sunset: 6:06 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 77°F
  • 55°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 7mphW 264°
  • Humidity: 56%
  • UV index: 5
  • Sunrise: 7:01 am PDT
  • Sunset: 6:05 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 77°F
  • 57°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 8mphSSW 201°
  • Humidity: 54%
  • UV index: 4
  • Sunrise: 7:01 am PDT
  • Sunset: 6:04 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 73°F
  • 55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 9mphSW 214°
  • Humidity: 58%
  • UV index: 5
  • Sunrise: 7:02 am PDT
  • Sunset: 6:03 pm PDT
  • ▼
The next ten days will bring unstable conditions, and a mix of overcast, clear, wet and storm-filled weather is expected.
Rain is predicted for Wednesday and Thursday.
Temperature variation will be noticeable in the coming days. Maximum temperatures are forecasted between 66.2°F and 86°F, while the lowest temperature will be between 55.4°F and 62.6°F.
Saturday and Sunday, with the highest temperature of 86°F, will be the hottest days in Fallbrook; Thursday will be the coldest day, with the highest temperature of 66.2°F.
Updated: Oct 17, 2026 @ 17:34:46 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, low clouds in the morning are expected to clear, bringing a bright afternoon.

Today, the highest temperature will be 86°F, while the lowest temperature will be 62.6°F.
Today, the maximum temperature will be significantly higher than the average highest temperature of 76.3°F in October. The lowest temperature today will be slightly warmer than the average low temperature.

On Saturday, in Fallbrook, sunrise was at 6:55 am and sunset will be at 6:13 pm (PDT).

Today, the daylight will last for 11h and 18min.

Tomorrow, in Fallbrook, clear skies and sunshine are anticipated.

Tomorrow, the maximum temperature will be 86°F, while the minimum temperature will be 59°F.
Tomorrow, the maximum temperature will be uncommonly higher than the average highest temperature of 76.3°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.

On Sunday, in Fallbrook, sunrise will be at 6:56 am and sunset at 6:12 pm (PDT).

Tomorrow, the daylight will last for 11h and 16min.