Weather forecast for todaySaint Helena, CA

Weather forecast for today

Current condition 10:32 am PDT

  • 73°F
  • Feels like:
    73°F
Sunny
Sunny
  • Precipitation: 0"
  • Wind: 3mphN 10°
  • Humidity: 27%
  • Dewpoint: 37°F
  • Pressure: 30.07"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
In Saint Helena, at the moment, the weather is sunny with a crisp, clear sky.
The temperature is a warm 73.4°F. The current temperature is relatively far from the maximum of 91.4°F forecasted for today.

Saturday Oct 17, 2026

  • 91°F
  • 48°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphS 178°
  • Humidity: 17%
  • UV index: 5
  • Sunrise: 7:21 am PDT
  • Sunset: 6:29 pm PDT
  • ▼
On Saturday, October 17, the weather remains calm, bright, and sunny.
A remarkable high of a hot 91.4°F during the day and a stark low of a frosty 48.2°F at night are expected.
The hotter conditions bring a maximum of 91.4°F, more representative of September than October.
Sunrise was at 7:21 am and sunset will be at 6:29 pm; the daylight will last for 11h and 8min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 91°C.
Coldest hour: 1 am 59°C.

Chance of precipitation

Highest chance: 9 pm 1%.

Hourly weather forecast

  • 11 am
  • 77°F
  • Feels like:
    77°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphENE 77°
  • Humidity: 23%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 12 pm
  • 82°F
  • Feels like:
    82°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphESE 107°
  • Humidity: 19%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 1 pm
  • 86°F
  • Feels like:
    86°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphSE 145°
  • Humidity: 15%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 2 pm
  • 90°F
  • Feels like:
    90°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphSSW 195°
  • Humidity: 14%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 3 pm
  • 91°F
  • Feels like:
    91°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphSSW 207°
  • Humidity: 13%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 91°F
  • Feels like:
    91°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSW 221°
  • Humidity: 13%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 5 pm
  • 90°F
  • Feels like:
    90°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSSW 213°
  • Humidity: 14%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 84°F
  • Feels like:
    84°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphSSW 204°
  • Humidity: 19%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:29 pm
  • 7 pm
  • 77°F
  • Feels like:
    77°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphS 187°
  • Humidity: 26%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 72°F
  • Feels like:
    72°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphSSW 196°
  • Humidity: 32%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 68°F
  • Feels like:
    68°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphSW 233°
  • Humidity: 38%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 64°F
  • Feels like:
    64°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphW 279°
  • Humidity: 42%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 63°F
  • Feels like:
    63°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphWNW 300°
  • Humidity: 42%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, sunny conditions are likely to prevail.
The temperature will vary between the lowest temperature of 62.6°F and the highest temperature of 91.4°F. The hottest part of the day will be at 3 pm and 4 pm.
The day’s peak temperature will reflect September's norm of 85.3°F more than October's 75°F. The expected low will be alike with the average minimum in October, which is 50.9°F.
Updated: Oct 17, 2026 @ 17:32:00 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The current temperature (10:32 am PDT) is 73.4°F.

On Saturday, the outlook remains bright and sunny.

Today, the highest temperature will be 91.4°F, while the lowest temperature will be 48.2°F.
The highest temperature will be significantly higher than the average maximum of 75°F in October. The lowest temperature will be in line with the average low of 50.9°F.

On Saturday, in Saint Helena, sunrise was at 7:21 am and sunset will be at 6:29 pm (PDT).

Today, the daylight will last for 11h and 8min.