Weather forecast for 10 daysWalnut, CA
Weather forecast for the weekend
Saturday Oct 17, 2026
- 90°F
- 64°F
Mostly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 8mphESE 121°
- Humidity: 18%
- UV index: 6
- Sunrise: 6:58 am PDT
- Sunset: 6:15 pm PDT
- details ▼
Today, on Saturday, October 17, the sky will be mainly overcast.
The temperature will fluctuate from a high of a humid 89.6°F to a low of a comfortable 64.4°F.
Today, climate comparisons show a temperature closer to September's 87.3°F than October's 79.3°F.
Sunrise was at 6:58 am and sunset will be at 6:15 pm; the daylight will last for 11h and 17min.
The temperature will fluctuate from a high of a humid 89.6°F to a low of a comfortable 64.4°F.
Today, climate comparisons show a temperature closer to September's 87.3°F than October's 79.3°F.
Sunrise was at 6:58 am and sunset will be at 6:15 pm; the daylight will last for 11h and 17min.
Sunday Oct 18, 2026
- 88°F
- 63°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphS 175°
- Humidity: 27%
- UV index: 6
- Sunrise: 6:59 am PDT
- Sunset: 6:13 pm PDT
- details ▼
Tomorrow, on Sunday, October 18, changing cloud patterns will allow for periods of sunshine.
The temperature variation is predicted to range from a maximum of a tropical 87.8°F to a minimum of a breezy 62.6°F.
Temperatures are higher than average, more in line with September's norm of 87.3°F than with October's 79.3°F.
Sunrise will be at 6:59 am and sunset at 6:13 pm; tomorrow's daylight will last for 11h and 14min.
The temperature variation is predicted to range from a maximum of a tropical 87.8°F to a minimum of a breezy 62.6°F.
Temperatures are higher than average, more in line with September's norm of 87.3°F than with October's 79.3°F.
Sunrise will be at 6:59 am and sunset at 6:13 pm; tomorrow's daylight will last for 11h and 14min.
10-day overview
Daily temperatures
Warmest day: today 90°C.
Coldest day: Thursday 66°C.
Coldest day: Thursday 66°C.
Chance of precipitation
Highest chance: Thursday 85%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- 90°F
- 64°F
Mostly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 8mphESE 121°
- Humidity: 18%
- UV index: 6
- Sunrise: 6:58 am PDT
- Sunset: 6:15 pm PDT
- details ▼
- Sunday
- Oct 18, 2026
- 88°F
- 63°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphS 175°
- Humidity: 27%
- UV index: 6
- Sunrise: 6:59 am PDT
- Sunset: 6:13 pm PDT
- details ▼
- Monday
- Oct 19, 2026
- 84°F
- 61°F
Mostly Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 9mphSSW 196°
- Humidity: 41%
- UV index: 6
- Sunrise: 7:00 am PDT
- Sunset: 6:12 pm PDT
- details ▼
- Tuesday
- Oct 20, 2026
- 81°F
- 59°F
Mostly Sunny
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 9mphSSW 194°
- Humidity: 52%
- UV index: 6
- Sunrise: 7:00 am PDT
- Sunset: 6:11 pm PDT
- details ▼
- Wednesday
- Oct 21, 2026
- 75°F
- 59°F
Rain
- Precip. probability: 63%
- Precipitation: 0.59"
- Wind: 8mphS 189°
- Humidity: 64%
- UV index: 5
- Sunrise: 7:01 am PDT
- Sunset: 6:10 pm PDT
- details ▼
- Thursday
- Oct 22, 2026
- 66°F
- 55°F
Thundershowers
- Precip. probability: 85%
- Precipitation: 0.31"
- Wind: 7mphS 188°
- Humidity: 74%
- UV index: 4
- Sunrise: 7:02 am PDT
- Sunset: 6:09 pm PDT
- details ▼
- Friday
- Oct 23, 2026
- 73°F
- 57°F
Mostly Sunny
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 6mphS 189°
- Humidity: 66%
- UV index: 5
- Sunrise: 7:03 am PDT
- Sunset: 6:08 pm PDT
- details ▼
- Saturday
- Oct 24, 2026
- 77°F
- 57°F
Mostly Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 6mphSSW 211°
- Humidity: 53%
- UV index: 5
- Sunrise: 7:04 am PDT
- Sunset: 6:06 pm PDT
- details ▼
- Sunday
- Oct 25, 2026
- 79°F
- 59°F
Partly Cloudy
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 7mphS 189°
- Humidity: 48%
- UV index: 4
- Sunrise: 7:05 am PDT
- Sunset: 6:05 pm PDT
- details ▼
- Monday
- Oct 26, 2026
- 75°F
- 57°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 7mphS 186°
- Humidity: 53%
- UV index: 5
- Sunrise: 7:05 am PDT
- Sunset: 6:04 pm PDT
- details ▼
And a mix of cloud-filled, sun-filled, rainy and thunderstorm-prone weather is forecasted.
Rain is predicted for Wednesday and Thursday.
Expect a substantial fluctuation in daytime highs in the upcoming period. Highs will range from 66.2°F to 89.6°F, while the lowest temperature will be between 55.4°F and 64.4°F.
With a high of 89.6°F, today is the hottest day; Thursday will be the coldest day, with the highest temperature of 66.2°F.
Rain is predicted for Wednesday and Thursday.
Expect a substantial fluctuation in daytime highs in the upcoming period. Highs will range from 66.2°F to 89.6°F, while the lowest temperature will be between 55.4°F and 64.4°F.
With a high of 89.6°F, today is the hottest day; Thursday will be the coldest day, with the highest temperature of 66.2°F.
Updated: Oct 17, 2026 @ 17:57:26 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 Saturday, in Walnut, a dense overcast layer will shape the day’s outlook.
Today, the maximum temperature will be 89.6°F, while the minimum temperature will be 64.4°F.
Today, the maximum temperature will be noticeably higher than the average highest temperature of 79.3°F in October. Today, the lowest temperature will be a couple of degrees higher than the average low temperature.
Today, the maximum temperature will be noticeably higher than the average highest temperature of 79.3°F in October. Today, the lowest temperature will be a couple of degrees higher than the average low temperature.
On Saturday, in Walnut, sunrise was at 6:58 am and sunset will be at 6:15 pm (PDT).
In Walnut, today, there will be 11h and 17min of daylight.
On Sunday, sunny moments will alternate with patchy cloud cover.
Tomorrow, the highest temperature will be 87.8°F, while the lowest temperature will be 62.6°F.
The highest temperature will be relatively higher than the average maximum of 79.3°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.
The highest temperature will be relatively higher than the average maximum of 79.3°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.
On Sunday, in Walnut, sunrise will be at 6:59 am and sunset at 6:13 pm (PDT).
In Walnut, the length of the day tomorrow will be 11h and 14min.
