Weather Alert
Upper Oso Reservoir Weather Warning NWS WEATHER ALERT FOR THE UPPER OSO RESERVOIR, CA AREA - Issued: 503 AM PDT Fri Aug 28 2026 Upper Oso Reservoir Weather Warning

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Upper Oso Reservoir, CA Weather - Hour by Hour Forecast

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Upper Oso Reservoir, CA Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Partly Cloudy. Temperature is 86°F30°C, dew point 70°F21°C, humidity 58%. Wind direction is WSW at 10 mph16 km/h with visibility of 10 mi16 km. Barometric pressure is 29.88 in1012 mb.
Today - Partly cloudy this morning...Becoming mostly sunny. Highs 93 to 97 towards the coast to 100 farther inland. Light winds becoming s.. Full Forecast
Tonight - Mostly clear. Lows 68 to 73. Areas of winds south to 10 mph in the evening becoming light... Full Forecast

Upper Oso Reservoir Hourly Weather

24 Hour Forecast Scroll
Fri, Aug 28
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Upper Oso Reservoir, CA Hourly Weather - Partly Cloudy - 11:00 AM Upper Oso Reservoir, CA Hourly Weather - Partly Cloudy - 12:00 PM Upper Oso Reservoir, CA Hourly Weather - Mostly Cloudy - 1:00 PM Upper Oso Reservoir, CA Hourly Weather - Mostly Cloudy - 2:00 PM Upper Oso Reservoir, CA Hourly Weather - Mostly Cloudy - 3:00 PM Upper Oso Reservoir, CA Hourly Weather - Partly Cloudy - 4:00 PM Upper Oso Reservoir, CA Hourly Weather - Partly Cloudy - 5:00 PM Upper Oso Reservoir, CA Hourly Weather - Partly Cloudy - 6:00 PM Upper Oso Reservoir, CA Hourly Weather - Partly Cloudy - 7:00 PM Upper Oso Reservoir, CA Hourly Weather - Partly Cloudy - 8:00 PM Upper Oso Reservoir, CA Hourly Weather - Partly Cloudy - 9:00 PM Upper Oso Reservoir, CA Hourly Weather - Mostly Clear - 10:00 PM Upper Oso Reservoir, CA Hourly Weather - Mostly Clear - 11:00 PM Upper Oso Reservoir, CA Hourly Weather - Mostly Clear - 12:00 AM Upper Oso Reservoir, CA Hourly Weather - Clear - 1:00 AM Upper Oso Reservoir, CA Hourly Weather - Clear - 2:00 AM Upper Oso Reservoir, CA Hourly Weather - Clear - 3:00 AM Upper Oso Reservoir, CA Hourly Weather - Clear - 4:00 AM Upper Oso Reservoir, CA Hourly Weather - Clear - 5:00 AM Upper Oso Reservoir, CA Hourly Weather - Clear - 6:00 AM Upper Oso Reservoir, CA Hourly Weather - Mostly Cloudy - 7:00 AM Upper Oso Reservoir, CA Hourly Weather - Mostly Cloudy - 8:00 AM Upper Oso Reservoir, CA Hourly Weather - Mostly Cloudy - 9:00 AM Upper Oso Reservoir, CA Hourly Weather - Partly Cloudy - 10:00 AM
Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Mostly Clear Mostly Clear Mostly Clear Clear Clear Clear Clear Clear Clear Mostly Cloudy Mostly Cloudy Mostly Cloudy Partly Cloudy
87°F31°C 88°F31°C 89°F32°C 90°F32°C 89°F32°C 89°F32°C 88°F31°C 85°F29°C 83°F28°C 80°F27°C 79°F26°C 77°F25°C 76°F24°C 76°F24°C 76°F24°C 76°F24°C 76°F24°C 75°F24°C 75°F24°C 76°F24°C 76°F24°C 77°F25°C 79°F26°C 81°F27°C
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1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
70°F21°C 69°F21°C 68°F20°C 67°F19°C 67°F19°C 67°F19°C 67°F19°C 67°F19°C 68°F20°C 68°F20°C 69°F21°C 69°F21°C 70°F21°C 70°F21°C 70°F21°C 70°F21°C 70°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 69°F21°C 68°F20°C
57% 54% 50% 47% 48% 48% 50% 55% 61% 67% 72% 76% 82% 82% 82% 82% 82% 82% 82% 79% 79% 76% 72% 65%
SW SW SW SW SW SW SW SW SW SW SSE S S S S S S SSE SSE SSE S S S SSE
5 mph 5 mph 9 mph 9 mph 9 mph 9 mph 9 mph 9 mph 5 mph 5 mph 5 mph 5 mph 5 mph 5 mph 2 mph 2 mph 2 mph 1 mph 1 mph 1 mph 2 mph 2 mph 2 mph 9 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (PDT)
Weather
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POP = Probability of Precipitation. ** Indicates missing data/values from KSNA model statistics.

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Prob Precip % = Probability of Precipitation.

Upper Oso Reservoir 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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