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      Elev 256 ft, 38.502 °N 122.473 °W

      St. Helena, CA

      Wed, Oct 21, 2026
      Tomorrow
      Thu 10/22
      High 73°f
      15% Precip. / 0 in
      Overcast. Slight chance of a rain shower. High 73F. Winds light and variable.
      Tomorrow night
      Thu 10/22
      Low 53°f
      24% Precip. / 0 in
      Cloudy skies. Slight chance of a rain shower. Low 53F. Winds light and variable.
      Sunrise 7:25 AM
      Sunset 6:23 PM
      Moonrise 4:05 PM
      Moonset 2:33 AM
      Waxing Gibbous, 80% visible
      Hourly Forecast
      12AM
      57°
      1AM
      57°
      2AM
      57°
      3AM
      56°
      4AM
      54°
      5AM
      54°
      6AM
      52°
      7AM
      52°
      7:24AM
      Sunrise
      8AM
      52°
      9AM
      57°
      10AM
      62°
      11AM
      64°
      12PM
      68°
      1PM
      70°
      2PM
      71°
      3PM
      71°
      4PM
      71°
      5PM
      70°
      6PM
      66°
      6:23PM
      Sunset
      7PM
      62°
      8PM
      61°
      9PM
      60°
      10PM
      59°
      11PM
      58°
      Time Conditions Temp. Feels Like Precip Amount Cloud Cover Dew Point Humidity Wind Pressure
      12:00 am
      Cloudy
      57°F 57°F 1% 0in 90% 43°F 58% 1 mph N 29.84in
      1:00 am
      Cloudy
      57°F 57°F 3% 0in 96% 44°F 60% 1 mph NNE 29.83in
      2:00 am
      Cloudy
      57°F 57°F 4% 0in 91% 45°F 64% 1 mph NNE 29.82in
      3:00 am
      Cloudy
      56°F 56°F 2% 0in 95% 45°F 65% 1 mph ENE 29.82in
      4:00 am
      Cloudy
      54°F 54°F 2% 0in 89% 45°F 70% 1 mph WSW 29.82in
      5:00 am
      Cloudy
      54°F 54°F 2% 0in 90% 45°F 72% 0 mph W 29.83in
      6:00 am
      Cloudy
      52°F 52°F 3% 0in 87% 45°F 75% 0 mph WSW 29.84in
      7:00 am
      Cloudy
      52°F 52°F 4% 0in 86% 45°F 76% 1 mph W 29.86in
      8:00 am
      Mostly Cloudy
      52°F 52°F 2% 0in 72% 45°F 76% 1 mph WNW 29.87in
      9:00 am
      Cloudy
      57°F 57°F 3% 0in 82% 46°F 67% 2 mph NNW 29.88in
      10:00 am
      Mostly Cloudy
      62°F 62°F 1% 0in 78% 47°F 58% 3 mph NNW 29.89in
      11:00 am
      Mostly Cloudy
      64°F 64°F 15% 0in 78% 48°F 55% 3 mph NW 29.88in
      12:00 pm
      Cloudy
      68°F 68°F 15% 0in 84% 49°F 51% 3 mph NNE 29.88in
      1:00 pm
      Cloudy
      70°F 70°F 15% 0in 94% 49°F 46% 3 mph ESE 29.86in
      2:00 pm
      Cloudy
      71°F 71°F 15% 0in 96% 48°F 44% 3 mph E 29.85in
      3:00 pm
      Cloudy
      71°F 71°F 15% 0in 95% 49°F 45% 4 mph ESE 29.84in
      4:00 pm
      Cloudy
      71°F 71°F 15% 0in 96% 49°F 45% 4 mph SSE 29.84in
      5:00 pm
      Cloudy
      70°F 70°F 15% 0in 98% 50°F 50% 4 mph SSE 29.84in
      6:00 pm
      Cloudy
      66°F 66°F 15% 0in 94% 51°F 59% 4 mph SSE 29.84in
      7:00 pm
      Cloudy
      62°F 62°F 15% 0in 86% 52°F 69% 3 mph SE 29.85in
      8:00 pm
      Cloudy
      61°F 61°F 15% 0in 90% 52°F 74% 2 mph SE 29.86in
      9:00 pm
      Mostly Cloudy
      60°F 60°F 17% 0in 76% 53°F 77% 1 mph ESE 29.86in
      10:00 pm
      Cloudy
      59°F 59°F 16% 0in 96% 53°F 80% 1 mph SE 29.86in
      11:00 pm
      Cloudy
      58°F 58°F 17% 0in 86% 53°F 83% 1 mph WNW 29.86in
      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