Weather forecast for 10 daysSan Martin, CA
Weather forecast for the weekend
Sunday Oct 18, 2026
- 84°F
- 48°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 11mphNW 320°
- Humidity: 44%
- UV index: 5
- Sunrise: 7:17 am PDT
- Sunset: 6:25 pm PDT
- details ▼
On Sunday, October 18, sunshine is forecasted under mostly clear skies.
Dramatic changes in temperature are anticipated, reaching a high of a temperate 84.2°F and falling to a low of a chilly 48.2°F.
The maximum heat index, which combines air temperature and relative humidity, is calculated to be 84.2°F.
Today, meteorological data suggests the high will feel more like September, based on a forecast of 84.2°F.
Sunrise will be at 7:17 am and sunset at 6:25 pm; the daylight will last for 11h and 8min.
Dramatic changes in temperature are anticipated, reaching a high of a temperate 84.2°F and falling to a low of a chilly 48.2°F.
The maximum heat index, which combines air temperature and relative humidity, is calculated to be 84.2°F.
Today, meteorological data suggests the high will feel more like September, based on a forecast of 84.2°F.
Sunrise will be at 7:17 am and sunset at 6:25 pm; the daylight will last for 11h and 8min.
10-day overview
Daily temperatures
Warmest day: today 84°C.
Coldest day: Wednesday 68°C.
Coldest day: Wednesday 68°C.
Chance of precipitation
Highest chance: Wednesday 65%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 84°F
- 48°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 11mphNW 320°
- Humidity: 44%
- UV index: 5
- Sunrise: 7:17 am PDT
- Sunset: 6:25 pm PDT
- details ▼
- Monday
- Oct 19, 2026
- 72°F
- 45°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 11mphNW 308°
- Humidity: 60%
- UV index: 5
- Sunrise: 7:18 am PDT
- Sunset: 6:24 pm PDT
- details ▼
- Tuesday
- Oct 20, 2026
- 73°F
- 50°F
Mostly Cloudy
- Precip. probability: 18%
- Precipitation: 0.12"
- Wind: 9mphSSE 167°
- Humidity: 57%
- UV index: 4
- Sunrise: 7:19 am PDT
- Sunset: 6:23 pm PDT
- details ▼
- Wednesday
- Oct 21, 2026
- 68°F
- 48°F
Showers
- Precip. probability: 65%
- Precipitation: 0.24"
- Wind: 8mphNNE 23°
- Humidity: 72%
- UV index: 2
- Sunrise: 7:20 am PDT
- Sunset: 6:21 pm PDT
- details ▼
- Thursday
- Oct 22, 2026
- 70°F
- 48°F
PM Showers
- Precip. probability: 38%
- Precipitation: 0.04"
- Wind: 11mphNW 304°
- Humidity: 73%
- UV index: 4
- Sunrise: 7:21 am PDT
- Sunset: 6:20 pm PDT
- details ▼
- Friday
- Oct 23, 2026
- 72°F
- 45°F
Partly Cloudy
- Precip. probability: 23%
- Precipitation: 0"
- Wind: 10mphNW 312°
- Humidity: 68%
- UV index: 5
- Sunrise: 7:22 am PDT
- Sunset: 6:19 pm PDT
- details ▼
- Saturday
- Oct 24, 2026
- 75°F
- 45°F
Mostly Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 9mphNNE 17°
- Humidity: 55%
- UV index: 5
- Sunrise: 7:23 am PDT
- Sunset: 6:18 pm PDT
- details ▼
- Sunday
- Oct 25, 2026
- 72°F
- 45°F
Partly Cloudy
- Precip. probability: 12%
- Precipitation: 0"
- Wind: 11mphNNW 347°
- Humidity: 56%
- UV index: 4
- Sunrise: 7:24 am PDT
- Sunset: 6:16 pm PDT
- details ▼
- Monday
- Oct 26, 2026
- 70°F
- 45°F
Partly Cloudy
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 11mphNNW 334°
- Humidity: 55%
- UV index: 4
- Sunrise: 7:25 am PDT
- Sunset: 6:15 pm PDT
- details ▼
- Tuesday
- Oct 27, 2026
- 72°F
- 45°F
Partly Cloudy
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 10mphN 353°
- Humidity: 53%
- UV index: 4
- Sunrise: 7:26 am PDT
- Sunset: 6:14 pm PDT
- details ▼
For the next ten days, a combination of cloud-filled, clear and showery weather is predicted.
Rainfall is anticipated on Tuesday through Thursday.
Substantial differences in temperature are forecasted throughout the forecast window. Forecast highs will fluctuate between 68°F and 84.2°F, while the lowest nightly temperature differences will be negligible, as the lowest temperatures will remain in the range of 44.6°F to 50°F.
The hottest day is today, with a maximum temperature of 84.2°F; expect the coldest day on Wednesday with a high of 68°F.
Rainfall is anticipated on Tuesday through Thursday.
Substantial differences in temperature are forecasted throughout the forecast window. Forecast highs will fluctuate between 68°F and 84.2°F, while the lowest nightly temperature differences will be negligible, as the lowest temperatures will remain in the range of 44.6°F to 50°F.
The hottest day is today, with a maximum temperature of 84.2°F; expect the coldest day on Wednesday with a high of 68°F.
Updated: Oct 18, 2026 @ 11:34:37 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
On Sunday, the outlook remains bright and sunny.
Today, the highest temperature will be 84.2°F, while the lowest temperature will be 48.2°F. The maximum heat index, which modifies the air temperature to account for humidity, is evaluated at 84.2°F.
The highest temperature today will be notably higher than the average maximum of 74.7°F in October. The lowest temperature will be in line with the average low of 51.1°F.
The highest temperature today will be notably higher than the average maximum of 74.7°F in October. The lowest temperature will be in line with the average low of 51.1°F.
On Sunday, in San Martin, sunrise will be at 7:17 am and sunset at 6:25 pm (PDT).
Today, the daylight will last for 11h and 8min.
