Weather forecast for tomorrowWalnut, CA
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 88°F
- 61°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphS 173°
- Humidity: 27%
- UV index: 6
- Sunrise: 6:59 am PDT
- Sunset: 6:13 pm PDT
- details ▼
Tomorrow, a pleasant, mostly sunny outlook is in place.
Day and night temperatures will contrast sharply, ranging from a peak of a blazing 87.8°F to a low of an enjoyable 60.8°F.
The forecast high of 87.8°F aligns more closely with September's typical high of 87.3°F than with October's usual 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.
Day and night temperatures will contrast sharply, ranging from a peak of a blazing 87.8°F to a low of an enjoyable 60.8°F.
The forecast high of 87.8°F aligns more closely with September's typical high of 87.3°F than with October's usual 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.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 86°C.
Coldest hour: 6 am 66°C.
Coldest hour: 6 am 66°C.
Chance of precipitation
Highest chance: 9 pm 1%.
Hourly weather forecast
- 12 am
- 72°F
- Feels like:72°F
Mostly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphENE 75°
- Humidity: 35%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 70°F
- Feels like:70°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphENE 70°
- Humidity: 37%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 68°F
- Feels like:68°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphENE 68°
- Humidity: 38%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 66°F
- Feels like:66°F
Mostly Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphENE 71°
- Humidity: 40%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 6:59 am
- 8 am
- 68°F
- Feels like:68°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphENE 77°
- Humidity: 38%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 77°F
- Feels like:77°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphE 101°
- Humidity: 27%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 12 pm
- 82°F
- Feels like:82°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphSE 143°
- Humidity: 21%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 6
- details ▼
- 2 pm
- 86°F
- Feels like:86°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphSW 232°
- Humidity: 20%
- Pressure: 29.88"Hg
- Visibility: 10mi
- UV index: 5
- details ▼
- 4 pm
- 86°F
- Feels like:86°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphWSW 242°
- Humidity: 25%
- Pressure: 29.88"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 6 pm
- 81°F
- Feels like:81°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphWSW 253°
- Humidity: 31%
- Pressure: 29.88"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:13 pm
- 8 pm
- 75°F
- Feels like:75°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphWSW 248°
- Humidity: 44%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 72°F
- Feels like:72°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 2mphSSW 208°
- Humidity: 52%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, a combination of gloomy and dry and sunny weather is forecasted.
The temperature will be between a minimum of 66.2°F and a maximum of 86°F. The hottest part of the day will be from 2 pm to 4 pm.
The temperature will feel more alike with September's average high than the expected maximum for October. The lowest temperature is comparable to October's typical minimum of 59.5°F.
The temperature will be between a minimum of 66.2°F and a maximum of 86°F. The hottest part of the day will be from 2 pm to 4 pm.
The temperature will feel more alike with September's average high than the expected maximum for October. The lowest temperature is comparable to October's typical minimum of 59.5°F.
Updated: Oct 17, 2026 @ 16:41:12 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
Tomorrow, golden sunshine will carry through the day.
Tomorrow, the highest temperature in Walnut will be 87.8°F, while the lowest temperature will be 60.8°F.
The maximum temperature will be a couple of degrees higher than the average highest temperature of 79.3°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.
The maximum temperature will be a couple of degrees higher than the average highest temperature 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).
Tomorrow, the daylight will last for 11h and 14min.
