Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Texas flood dangers grow as torrential downpours loom. Click for the forecast. Chevron right

St. Helena, CA

101°F
Location Chevron down
Location News Videos
Use Current Location
Recent

St. Helena

California

101°
No results found.
Try searching for a city, zip code or point of interest.
Get Premium+
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
St. Helena, CA Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center
Today

Hourly

 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

4 PM

100°
RealFeel® 101°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Coastal Flood Advisory

4:00 PM Thursday - 4:00 AM Thursday
alerts

Heat Advisory

10:00 AM Tuesday - 10:00 PM Tuesday

RealFeel Shade™97°

Heat Index97°

WindWSW 9 mph

Air QualityFair

Max UV Index4.8 (Moderate)

Wind Gusts20 mph

Humidity19%

Indoor Humidity19% (Ideal Humidity)

Dew Point51° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover8%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

98°
RealFeel® 98°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Coastal Flood Advisory

4:00 PM Thursday - 4:00 AM Thursday
alerts

Heat Advisory

10:00 AM Tuesday - 10:00 PM Tuesday

RealFeel Shade™95°

Heat Index95°

WindW 10 mph

Air QualityFair

Max UV Index3.3 (Moderate)

Wind Gusts21 mph

Humidity19%

Indoor Humidity19% (Ideal Humidity)

Dew Point49° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover4%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

96°
RealFeel® 96°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Coastal Flood Advisory

4:00 PM Thursday - 4:00 AM Thursday
alerts

Heat Advisory

10:00 AM Tuesday - 10:00 PM Tuesday

RealFeel Shade™93°

Heat Index93°

WindW 9 mph

Air QualityFair

Max UV Index2.1 (Low)

Wind Gusts18 mph

Humidity20%

Indoor Humidity20% (Ideal Humidity)

Dew Point50° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover1%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

94°
RealFeel® 92°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Coastal Flood Advisory

4:00 PM Thursday - 4:00 AM Thursday
alerts

Heat Advisory

10:00 AM Tuesday - 10:00 PM Tuesday

RealFeel Shade™91°

Heat Index90°

WindW 8 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts16 mph

Humidity21%

Indoor Humidity21% (Ideal Humidity)

Dew Point49° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

90°
RealFeel® 87°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Coastal Flood Advisory

4:00 PM Thursday - 4:00 AM Thursday
alerts

Heat Advisory

10:00 AM Tuesday - 10:00 PM Tuesday

RealFeel Shade™87°

Heat Index87°

WindWNW 8 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts15 mph

Humidity25%

Indoor Humidity25% (Ideal Humidity)

Dew Point50° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

86°
RealFeel® 83°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 0%
Chevron down
Clear
alerts

Coastal Flood Advisory

4:00 PM Thursday - 4:00 AM Thursday
alerts

Heat Advisory

10:00 AM Tuesday - 10:00 PM Tuesday

Heat Index84°

WindWNW 7 mph

Air QualityFair

Wind Gusts12 mph

Humidity28%

Indoor Humidity28% (Ideal Humidity)

Dew Point50° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

82°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear
alerts

Coastal Flood Advisory

4:00 PM Thursday - 4:00 AM Thursday

Heat Index81°

WindWNW 6 mph

Air QualityFair

Wind Gusts9 mph

Humidity31%

Indoor Humidity31% (Ideal Humidity)

Dew Point49° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

78°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear
alerts

Coastal Flood Advisory

4:00 PM Thursday - 4:00 AM Thursday

WindWNW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity35%

Indoor Humidity35% (Ideal Humidity)

Dew Point49° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for St. Helena

AccuWeather's hourly forecast for St. Helena provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 100° with a RealFeel® of 101°, sunny with a 0% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

Further Ahead

Tomorrow

Thursday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Severe risk to sweep across New England fueled by dangerous heat

2 hours ago

Severe Weather

Texas flood dangers grow as more torrential downpours loom

2 hours ago

Weather Forecasts

'Steam-cooker' pattern grips the Central, East with heat and humidity

2 hours ago

Severe Weather

1-in-1,000-year flood devastates Missouri’s Black River region

2 hours ago

Hurricane

Tropical trouble could boost southeast U.S. flooding risk this weekend

2 hours ago

 More Stories

Featured Stories

Weather Forecasts

First storms of summer to arrive in southwestern US as monsoon begins

2 hours ago

Weather News

New daylight saving time bill takes different approach to time changes

2 hours ago

Weather News

Pilot killed after aircraft crashes during Colorado wildfire fight

2 hours ago

Recreation

Bison tosses Yellowstone visitor 8 feet into air during attack

2 hours ago

Astronomy

Total solar eclipse: Where the moon will block the sun in August

7 hours ago
World North America United States California St. Helena

Weather Near St. Helena:

  • Oakland, CA
  • San Francisco, CA
  • San Jose, CA
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...