Weather forecast for 10 daysSan Marino, CA
Weather forecast for the weekend
Sunday Oct 18, 2026
- 88°F
- 63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphSW 216°
- Humidity: 21%
- UV index: 6
- Sunrise: 7:00 am PDT
- Sunset: 6:14 pm PDT
- details ▼
On Sunday, in San Marino, the forecast calls for abundant sunshine.
The temperature is predicted to oscillate between a maximum of a humid 87.8°F and a minimum of a comfortable 62.6°F.
It will feel hotter than usual, as the temperature reflects September's normal high of 84.7°F, not October's.
Sunrise was at 7:00 am and sunset will be at 6:14 pm; the daylight will last for 11h and 14min.
The temperature is predicted to oscillate between a maximum of a humid 87.8°F and a minimum of a comfortable 62.6°F.
It will feel hotter than usual, as the temperature reflects September's normal high of 84.7°F, not October's.
Sunrise was at 7:00 am and sunset will be at 6:14 pm; the daylight will last for 11h and 14min.
10-day overview
Daily temperatures
Warmest day: today 88°C.
Coldest day: Thursday 70°C.
Coldest day: Thursday 70°C.
Chance of precipitation
Highest chance: Wednesday 89%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 88°F
- 63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphSW 216°
- Humidity: 21%
- UV index: 6
- Sunrise: 7:00 am PDT
- Sunset: 6:14 pm PDT
- details ▼
- Monday
- Oct 19, 2026
- 86°F
- 63°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 7mphS 172°
- Humidity: 38%
- UV index: 6
- Sunrise: 7:01 am PDT
- Sunset: 6:13 pm PDT
- details ▼
- Tuesday
- Oct 20, 2026
- 82°F
- 61°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 7mphSSE 166°
- Humidity: 54%
- UV index: 6
- Sunrise: 7:01 am PDT
- Sunset: 6:12 pm PDT
- details ▼
- Wednesday
- Oct 21, 2026
- 73°F
- 59°F
Rain
- Precip. probability: 89%
- Precipitation: 0.59"
- Wind: 7mphSSE 153°
- Humidity: 66%
- UV index: 5
- Sunrise: 7:02 am PDT
- Sunset: 6:11 pm PDT
- details ▼
- Thursday
- Oct 22, 2026
- 70°F
- 55°F
Scattered Thunderstorms
- Precip. probability: 68%
- Precipitation: 0.16"
- Wind: 6mphS 180°
- Humidity: 71%
- UV index: 5
- Sunrise: 7:03 am PDT
- Sunset: 6:10 pm PDT
- details ▼
- Friday
- Oct 23, 2026
- 73°F
- 57°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphS 179°
- Humidity: 61%
- UV index: 5
- Sunrise: 7:04 am PDT
- Sunset: 6:08 pm PDT
- details ▼
- Saturday
- Oct 24, 2026
- 81°F
- 61°F
Mostly Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphS 180°
- Humidity: 40%
- UV index: 5
- Sunrise: 7:05 am PDT
- Sunset: 6:07 pm PDT
- details ▼
- Sunday
- Oct 25, 2026
- 82°F
- 59°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 6mphSSE 163°
- Humidity: 36%
- UV index: 5
- Sunrise: 7:06 am PDT
- Sunset: 6:06 pm PDT
- details ▼
- Monday
- Oct 26, 2026
- 81°F
- 57°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 6mphS 171°
- Humidity: 42%
- UV index: 5
- Sunrise: 7:07 am PDT
- Sunset: 6:05 pm PDT
- details ▼
- Tuesday
- Oct 27, 2026
- 75°F
- 57°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 6mphSSE 160°
- Humidity: 44%
- UV index: 5
- Sunrise: 7:07 am PDT
- Sunset: 6:04 pm PDT
- details ▼
And a mix of mostly clear, overcast, rainy and storm-filled weather is predicted.
Rainfall is forecasted for Wednesday and Thursday.
Significant changes in temperature are expected in the upcoming period. The temperature is expected to swing from 69.8°F up to 87.8°F, while nighttime temperatures are expected to vary from 55.4°F to 62.6°F.
With a high of 87.8°F, today is the hottest day; with the highest temperature of 69.8°F, Thursday will be the coldest day.
Rainfall is forecasted for Wednesday and Thursday.
Significant changes in temperature are expected in the upcoming period. The temperature is expected to swing from 69.8°F up to 87.8°F, while nighttime temperatures are expected to vary from 55.4°F to 62.6°F.
With a high of 87.8°F, today is the hottest day; with the highest temperature of 69.8°F, Thursday will be the coldest day.
Updated: Oct 18, 2026 @ 18:44:58 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, bright and sunny weather is expected.
Today, the highest temperature will be 87.8°F, while the lowest temperature will be 62.6°F.
Today, the highest temperature will be noticeably higher than the average maximum of 78.1°F in October. The lowest temperature will be in line with the average low of 59.4°F.
Today, the highest temperature will be noticeably higher than the average maximum of 78.1°F in October. The lowest temperature will be in line with the average low of 59.4°F.
On Sunday, in San Marino, sunrise was at 7:00 am and sunset will be at 6:14 pm (PDT).
In San Marino, today, there will be 11h and 14min of daylight.
