account_box Log in Go Ad Freesettings Settings Sensor NetworkMaps & RadarSevere WeatherNews & BlogsMobile AppsHistorical Weather
closegps_fixed
Elev 256 ft, 38.5 °N, 122.47 °W

St. Helena, CA Weather Conditionsstar_ratehome

icon55 °F St. Helena Station|Report|Change
Current Station
Personal Weather Station
St. Helena (KCASTHEL46)
Location: St. Helena, CA
Elevation: 256ft
Nearby Weather Stations

access_time 1:26 AM PDT on September 19, 2026 (GMT -7) | Updated 24 seconds ago

--° | 51°
55 °F
like 55°
icon

Fair

N
0

Gusts 1 °mph

Tomorrow's temperature is forecast to be WARMER than today.

WunderMap|Nexrad
Additional Conditions
Pressure
30 °in
Visibility
9 °miles
Clouds
Partly Cloudy
Dew Point
54 °F
Humidity
93 °%
Rainfall
0 °in
Snow Depth
0 °in
Astronomy
Sun
Rise
Set
Actual Time
6:56 AM
7:13 PM
Civil Twilight
6:29 AM
7:40 PM
Nautical Twilight
5:58 AM
8:11 PM
Astronomical Twilight
5:27 AM
8:42 PM
Length of Visible Light
13 h 10 m
Length of Day
12 h 17 m
Tomorrow will be 2 minutes 28 seconds shorter
Moon
3:31 PM
-
icon
waxing gibbous
51% of the Moon is Illuminated
icon
Sep 26
Full Moon
icon
Oct 3
Waning Half Last Qtr
icon
Oct 10
New Moon
icon
Oct 18
Waxing Half First Qtr