Weather forecast for tomorrowSaint Helena, CA
Weather forecast for tomorrow
Monday Oct 19, 2026
- 68°F
- 45°F
Partly Cloudy
- Precip. probability: 11%
- Precipitation: 0"
- Wind: 9mphWSW 240°
- Humidity: 61%
- UV index: 5
- Sunrise: 7:23 am PDT
- Sunset: 6:26 pm PDT
- details ▼
On Monday, October 19, moderate cloud cover will mix with sunshine throughout the day.
Temperatures are forecasted to peak at a pleasant 68°F and drop to a minimum of a chilly 44.6°F.
The predicted temperature of 68°F resembles November's typical high of 63.5°F more than October's.
Sunrise will be at 7:23 am and sunset at 6:26 pm; tomorrow's daylight will last for 11h and 3min.
Temperatures are forecasted to peak at a pleasant 68°F and drop to a minimum of a chilly 44.6°F.
The predicted temperature of 68°F resembles November's typical high of 63.5°F more than October's.
Sunrise will be at 7:23 am and sunset at 6:26 pm; tomorrow's daylight will last for 11h and 3min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 68°C.
Coldest hour: 6 am 48°C.
Coldest hour: 6 am 48°C.
Chance of precipitation
Highest chance: 12 am 20%.
Hourly weather forecast
- 12 am
- 52°F
- Feels like:52°F
Partly Cloudy
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 2mphWSW 250°
- Humidity: 94%
- Pressure: 29.94"Hg
- Visibility: 6mi
- UV index: 0
- details ▼
- 2 am
- 48°F
- Feels like:48°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 2mphWSW 253°
- Humidity: 99%
- Pressure: 29.94"Hg
- Visibility: 3mi
- UV index: 0
- details ▼
- 4 am
- 48°F
- Feels like:48°F
Partly Cloudy
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 3mphW 261°
- Humidity: 96%
- Pressure: 29.94"Hg
- Visibility: 4mi
- UV index: 0
- details ▼
- 6 am
- 48°F
- Feels like:48°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 2mphWSW 250°
- Humidity: 95%
- Pressure: 29.94"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
Sunrise: 7:23 am
- 8 am
- 48°F
- Feels like:48°F
Partly Cloudy
- Precip. probability: 12%
- Precipitation: 0"
- Wind: 3mphW 260°
- Humidity: 95%
- Pressure: 29.94"Hg
- Visibility: 8mi
- UV index: 0
- details ▼
- 10 am
- 54°F
- Feels like:54°F
Mostly Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphW 265°
- Humidity: 75%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 61°F
- Feels like:61°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphWSW 243°
- Humidity: 54%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 66°F
- Feels like:66°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSW 224°
- Humidity: 41%
- Pressure: 29.88"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 66°F
- Feels like:66°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphSW 227°
- Humidity: 41%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 61°F
- Feels like:61°F
Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphSW 220°
- Humidity: 51%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:26 pm
- 8 pm
- 55°F
- Feels like:55°F
Cloudy
- Precip. probability: 16%
- Precipitation: 0"
- Wind: 4mphSW 222°
- Humidity: 67%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 54°F
- Feels like:54°F
Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 2mphSW 221°
- Humidity: 78%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, a combination of dull and clear weather is expected.
The temperature will be between the lowest temperature of 48.2°F and the highest temperature of 68°F. The warmest part of the day is anticipated around 3 pm.
The expected temperature aligns more with November's average high than with October's 75°F. The expected low will be also more in line with what’s common in November than the current October average of 50.9°F.
The temperature will be between the lowest temperature of 48.2°F and the highest temperature of 68°F. The warmest part of the day is anticipated around 3 pm.
The expected temperature aligns more with November's average high than with October's 75°F. The expected low will be also more in line with what’s common in November than the current October average of 50.9°F.
Updated: Oct 18, 2026 @ 14:00:28 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 Monday, in Saint Helena, clouds and sunshine will create a dynamic sky throughout the day.
Tomorrow, the highest temperature will be 68°F, while the lowest temperature will be 44.6°F.
The highest temperature will be a few degrees lower than the average maximum of 75°F in October. The lowest temperature will be also a couple of degrees lower than the average low of 50.9°F.
The highest temperature will be a few degrees lower than the average maximum of 75°F in October. The lowest temperature will be also a couple of degrees lower than the average low of 50.9°F.
On Monday, in Saint Helena, sunrise will be at 7:23 am and sunset at 6:26 pm (PDT).
In Saint Helena, the length of the day tomorrow will be 11h and 3min.
