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      Elev 256 ft, 38.502 °N 122.473 °W

      St. Helena, CA

      Tue, Oct 27, 2026
      Tuesday
      Wed 10/28
      High 80°f
      2% Precip. / 0 in
      Sunshine and clouds mixed. High near 80F. Winds light and variable.
      Tuesday night
      Wed 10/28
      Low 46°f
      6% Precip. / 0 in
      Partly to mostly cloudy. Low 46F. Winds light and variable.
      Sunrise 7:31 AM
      Sunset 6:15 PM
      Moonrise 7:06 PM
      Moonset 9:31 AM
      Waning Gibbous, 94% visible
      Hourly Forecast
      12AM
      51°
      1AM
      49°
      2AM
      48°
      3AM
      47°
      4AM
      47°
      5AM
      46°
      6AM
      46°
      7AM
      46°
      7:31AM
      Sunrise
      8AM
      47°
      9AM
      54°
      10AM
      61°
      11AM
      66°
      12PM
      71°
      1PM
      74°
      2PM
      77°
      3PM
      79°
      4PM
      78°
      5PM
      77°
      6PM
      73°
      6:15PM
      Sunset
      7PM
      66°
      8PM
      61°
      9PM
      58°
      10PM
      56°
      11PM
      54°
      Time Conditions Temp. Feels Like Precip Amount Cloud Cover Dew Point Humidity Wind Pressure
      12:00 am
      Partly Cloudy
      51°F 51°F 3% 0in 47% 43°F 74% 1 mph NW 30.06in
      1:00 am
      Partly Cloudy
      49°F 49°F 3% 0in 48% 42°F 77% 1 mph N 30.06in
      2:00 am
      Partly Cloudy
      48°F 48°F 3% 0in 49% 42°F 78% 1 mph N 30.06in
      3:00 am
      Partly Cloudy
      47°F 47°F 3% 0in 51% 42°F 80% 1 mph N 30.05in
      4:00 am
      Partly Cloudy
      47°F 47°F 3% 0in 52% 41°F 81% 1 mph N 30.05in
      5:00 am
      Partly Cloudy
      46°F 46°F 3% 0in 53% 41°F 81% 1 mph N 30.05in
      6:00 am
      Partly Cloudy
      46°F 46°F 3% 0in 53% 41°F 80% 1 mph NNE 30.05in
      7:00 am
      Partly Cloudy
      46°F 46°F 2% 0in 53% 40°F 81% 2 mph NNE 30.06in
      8:00 am
      Partly Cloudy
      47°F 47°F 2% 0in 52% 41°F 79% 1 mph N 30.06in
      9:00 am
      Partly Cloudy
      54°F 54°F 1% 0in 51% 42°F 64% 2 mph NNE 30.06in
      10:00 am
      Partly Cloudy
      61°F 61°F 0% 0in 51% 42°F 49% 2 mph NNE 30.06in
      11:00 am
      Partly Cloudy
      66°F 66°F 0% 0in 50% 41°F 40% 3 mph ENE 30.06in
      12:00 pm
      Partly Cloudy
      71°F 71°F 0% 0in 50% 41°F 33% 3 mph E 30.04in
      1:00 pm
      Partly Cloudy
      74°F 74°F 0% 0in 50% 40°F 29% 3 mph ESE 30.02in
      2:00 pm
      Partly Cloudy
      77°F 77°F 0% 0in 52% 39°F 26% 3 mph SE 30in
      3:00 pm
      Partly Cloudy
      79°F 79°F 0% 0in 54% 39°F 24% 4 mph SSE 29.98in
      4:00 pm
      Partly Cloudy
      78°F 78°F 0% 0in 59% 38°F 24% 4 mph S 29.97in
      5:00 pm
      Mostly Cloudy
      77°F 77°F 0% 0in 61% 38°F 25% 4 mph S 29.96in
      6:00 pm
      Mostly Cloudy
      73°F 73°F 0% 0in 62% 40°F 30% 4 mph SSE 29.96in
      7:00 pm
      Mostly Cloudy
      66°F 66°F 0% 0in 61% 41°F 40% 3 mph SE 29.97in
      8:00 pm
      Mostly Cloudy
      61°F 61°F 0% 0in 60% 43°F 50% 2 mph SE 29.97in
      9:00 pm
      Partly Cloudy
      58°F 58°F 1% 0in 58% 43°F 57% 1 mph SE 29.98in
      10:00 pm
      Partly Cloudy
      56°F 56°F 1% 0in 54% 43°F 64% 1 mph SE 29.98in
      11:00 pm
      Partly Cloudy
      54°F 54°F 2% 0in 53% 43°F 68% 0 mph NNE 29.98in
      Additional Conditions
      1. Pressure 29.84 in
      2. Visibility 10 miles
      3. Clouds Partly Cloudy
      4. Dew Point41°F
      5. Humidity 33%
      6. Rainfall 0 in
      7. Snow Depth 0 in
      KSTS Station History
      Almanac for October 20, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 75°F 77°F 95°F 2022
      4. Low 45°F 49°F 27°F 1949
      5. Rain/Snow Depth
      6. Precipitation 0 in 3.8 in -
      7. Snow 0 in 0 in -
      Almanac for October 21, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 73°F 76°F 98°F
      4. Low 51°F 49°F 30°F
      Astronomy
      1. Sun Rise Set
      2. Actual Time 7:24 AM 6:24 PM
      3. Civil Twilight 6:57 AM 6:51 PM
      4. Nautical Twilight 6:26 AM 7:22PM
      5. Astronomical Twilight 5:55 AM 7:52 PM
      1. Length of Visible Light 11h 54m
      2. Length of Day 11h 0m
      3. Tomorrow will be 2 minutes 22 seconds shorter
      1. Moon 3:41 PM 1:30 AM
      2. Waxing Gibbous71% of the Moon is Illuminated
      Oct 25
      Full Moon
      Nov 1
      Waning Half Last Qtr
      Nov 8
      New Moon
      Nov 17
      Waxing Half First Qtr
      Nearby Weather Stations
      Station Location
      Temp
      Windchill
      Heat Index
      Dew Point
      Humidity
      Wind
      Precip.
      Elev.
      Updated
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      Level Access
      Glossary