Union Lake, CA Weather Forecast

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Union Lake, CA Weather Forecast

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Union Lake CA weather  - Clear - 66°F
Clear
66°F
Updated 9:12 pm
Feels Like 55°F
Humidity 48%
Wind W 5 mph
Barometer  30.07 in
Dew Point 46°F
Union Lake CA weather  - Clear - 19°C
Clear
19°C
Updated 9:12 pm
Feels Like 13°C
Humidity 48%
Wind W 8 km/h
Barometer  101.8 kPa
Dew Point 8°C

Union Lake Weather Forecast

TONIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY FRIDAY FRIDAY NIGHT SATURDAY SUNDAY
Union Lake, CA Weather - Tonight Clearing Union Lake, CA Weather - Monday Sunny Union Lake, CA Weather - Monday Night Mostly Clear Union Lake, CA Weather - Tuesday Sunny Union Lake, CA Weather - Tuesday Night Clear Union Lake, CA Weather - Wednesday Clear Union Lake, CA Weather - Wednesday Night Clear Union Lake, CA Weather - Thursday Clear Union Lake, CA Weather - Friday Sunny Union Lake, CA Weather - Friday Night Mostly Clear Union Lake, CA Weather - Saturday Mostly Clear Union Lake, CA Weather - Sunday Mostly Clear
Clearing Sunny Mostly Clear Sunny Clear Clear Clear Clear Sunny Mostly Clear Mostly Clear Mostly Clear
Lo: 60°FLo: 16°C Hi: 89°FHi: 32°C
Lo: 59°FLo: 15°C Hi: 91°FHi: 33°C
Hi: 91°FHi: 33°C
Lo: 59°FLo: 15°C
Hi: 91°FHi: 33°C
Lo: 59°FLo: 15°C
Hi: 90°FHi: 32°C
Lo: 58°FLo: 14°C
Hi: 90°FHi: 32°C
Lo: 58°FLo: 14°C
Hi: 83°FHi: 28°C
Hi: 83°FHi: 28°C
Lo: 47°FLo: 8°C
Hi: 83°FHi: 28°C
Lo: 47°FLo: 8°C
Hi: 83°FHi: 28°C
Lo: 47°FLo: 8°C
POP = Probability of Precipitation.
Weather Outlook Updated: 314 PM PDT Sun Oct 04 2026 Union Lake, CA Weather - WeatherWorld.com

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Union Lake Forecast Discussion

Meteorlogic Glosserator
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Issued: 343 PM PDT Sun Oct 4 2026

Key Messages

  • Unseasonably hot temperatures with near record highs continue to generate Moderate HeatRisk across the interior through mid week.
  • Shallow, diurnal marine layer persisting along the coast through the weekend.
  • Dry conditions expected through this coming work week.

Discussion

...A consistent synoptic pattern remains overhead forcing relatively similar conditions for the past few days, expected to persist into the work week. Interior areas remain very hot, with close to record breaking tem...