Weather forecast for 10 daysArroyo Grande, CA
Weather forecast for the weekend
Sunday Oct 18, 2026
- 79°F
- 52°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 12mphW 267°
- Humidity: 52%
- UV index: 6
- Sunrise: 7:11 am PDT
- Sunset: 6:23 pm PDT
- details ▼
Today, on Sunday, October 18, sunny skies and pleasant visibility are expected.
Temperature changes will be remarkable, ranging from a high of a moderately hot 78.8°F to a low of a crisp 51.8°F.
The predicted top temperature is expected to be a couple of degrees higher than the usual October maximum of 74.3°F.
Sunrise will be at 7:11 am and sunset at 6:23 pm; the daylight will last for 11h and 13min.
Temperature changes will be remarkable, ranging from a high of a moderately hot 78.8°F to a low of a crisp 51.8°F.
The predicted top temperature is expected to be a couple of degrees higher than the usual October maximum of 74.3°F.
Sunrise will be at 7:11 am and sunset at 6:23 pm; the daylight will last for 11h and 13min.
10-day overview
Daily temperatures
Warmest day: today 79°C.
Coldest day: Wednesday 66°C.
Coldest day: Wednesday 66°C.
Chance of precipitation
Highest chance: Wednesday 84%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 79°F
- 52°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 12mphW 267°
- Humidity: 52%
- UV index: 6
- Sunrise: 7:11 am PDT
- Sunset: 6:23 pm PDT
- details ▼
- Monday
- Oct 19, 2026
- 72°F
- 54°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 14mphW 278°
- Humidity: 70%
- UV index: 5
- Sunrise: 7:12 am PDT
- Sunset: 6:22 pm PDT
- details ▼
- Tuesday
- Oct 20, 2026
- 70°F
- 55°F
Partly Cloudy
- Precip. probability: 12%
- Precipitation: 0.2"
- Wind: 11mphW 267°
- Humidity: 67%
- UV index: 4
- Sunrise: 7:12 am PDT
- Sunset: 6:21 pm PDT
- details ▼
- Wednesday
- Oct 21, 2026
- 66°F
- 54°F
Thunderstorms
- Precip. probability: 84%
- Precipitation: 0.59"
- Wind: 10mphSSE 153°
- Humidity: 81%
- UV index: 3
- Sunrise: 7:13 am PDT
- Sunset: 6:20 pm PDT
- details ▼
- Thursday
- Oct 22, 2026
- 68°F
- 50°F
AM Showers
- Precip. probability: 35%
- Precipitation: 0.04"
- Wind: 14mphWNW 296°
- Humidity: 76%
- UV index: 5
- Sunrise: 7:14 am PDT
- Sunset: 6:18 pm PDT
- details ▼
- Friday
- Oct 23, 2026
- 72°F
- 52°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 16mphNNW 334°
- Humidity: 68%
- UV index: 5
- Sunrise: 7:15 am PDT
- Sunset: 6:17 pm PDT
- details ▼
- Saturday
- Oct 24, 2026
- 77°F
- 50°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 12mphNNW 345°
- Humidity: 56%
- UV index: 5
- Sunrise: 7:16 am PDT
- Sunset: 6:16 pm PDT
- details ▼
- Sunday
- Oct 25, 2026
- 75°F
- 50°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 13mphNW 317°
- Humidity: 55%
- UV index: 5
- Sunrise: 7:17 am PDT
- Sunset: 6:15 pm PDT
- details ▼
- Monday
- Oct 26, 2026
- 72°F
- 50°F
Partly Cloudy
- Precip. probability: 21%
- Precipitation: 0"
- Wind: 13mphNW 315°
- Humidity: 58%
- UV index: 5
- Sunrise: 7:18 am PDT
- Sunset: 6:14 pm PDT
- details ▼
- Tuesday
- Oct 27, 2026
- 72°F
- 50°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 12mphNW 319°
- Humidity: 58%
- UV index: 5
- Sunrise: 7:19 am PDT
- Sunset: 6:13 pm PDT
- details ▼
Over the course of the next ten days, expect shifting weather, and a mix of cloud-filled, dry and sunny, thunderstorm-prone and rain-filled weather is predicted.
Rainfall is predicted for Tuesday through Thursday.
Temperature fluctuation will be noticeable in the coming days. Forecast highs will fluctuate between 66.2°F and 78.8°F, while changes in the overnight low will be barely noticeable, as night temperatures will lie between 50°F and 55.4°F.
The warmest day is today, with a maximum temperature of 78.8°F; the lowest daytime temperature of the period will be reached on Wednesday, peaking at 66.2°F.
Rainfall is predicted for Tuesday through Thursday.
Temperature fluctuation will be noticeable in the coming days. Forecast highs will fluctuate between 66.2°F and 78.8°F, while changes in the overnight low will be barely noticeable, as night temperatures will lie between 50°F and 55.4°F.
The warmest day is today, with a maximum temperature of 78.8°F; the lowest daytime temperature of the period will be reached on Wednesday, peaking at 66.2°F.
Updated: Oct 18, 2026 @ 14:03:13 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Today, in Arroyo Grande, clear and sunny conditions are expected.
Today, the highest temperature will be 78.8°F, while the lowest temperature will be 51.8°F.
Today, the maximum temperature will be relatively higher than the average highest temperature in October. The lowest temperature will be also a few degrees lower than the average low of 56.7°F.
Today, the maximum temperature will be relatively higher than the average highest temperature in October. The lowest temperature will be also a few degrees lower than the average low of 56.7°F.
On Sunday, in Arroyo Grande, sunrise will be at 7:11 am and sunset at 6:23 pm (PDT).
Today, the daylight will last for 11h and 13min.
