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Upper Stone Canyon Reservoir Weather Warning NWS WEATHER ALERT FOR THE UPPER STONE CANYON RESERVOIR, CA AREA - Issued: 911 AM PDT Fri Aug 7 2026 Upper Stone Canyon Reservoir Weather Warning

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Upper Stone Canyon Reservoir, CA Weather - Hour by Hour Forecast

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Upper Stone Canyon Reservoir, CA Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 76°F24°C, dew point 67°F19°C, humidity 73%. Wind direction is VRB at 7 mph11 km/h with visibility of 10 mi16 km. Barometric pressure is 29.91 in1012 mb.
Today - Partly cloudy except for patchy low clouds and fog in the morning. Fog locally dense with visibility one quarter mile or less. Hig.. Full Forecast
Tonight - Mostly cloudy except for patchy low clouds and fog after midnight. Fog locally dense with visibility one quarter mile or less. Low.. Full Forecast

Upper Stone Canyon Reservoir Hourly Weather

24 Hour Forecast Scroll
Sun, Aug 09
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Upper Stone Canyon Reservoir, CA Hourly Weather - Clear - 11:00 AM Upper Stone Canyon Reservoir, CA Hourly Weather - Clear - 12:00 PM Upper Stone Canyon Reservoir, CA Hourly Weather - Clear - 1:00 PM Upper Stone Canyon Reservoir, CA Hourly Weather - Clear - 2:00 PM Upper Stone Canyon Reservoir, CA Hourly Weather - Clear - 3:00 PM Upper Stone Canyon Reservoir, CA Hourly Weather - Clear - 4:00 PM Upper Stone Canyon Reservoir, CA Hourly Weather - Clear - 5:00 PM Upper Stone Canyon Reservoir, CA Hourly Weather - Clear - 6:00 PM Upper Stone Canyon Reservoir, CA Hourly Weather - Mostly Cloudy - 7:00 PM Upper Stone Canyon Reservoir, CA Hourly Weather - Mostly Cloudy - 8:00 PM Upper Stone Canyon Reservoir, CA Hourly Weather - Mostly Cloudy - 9:00 PM Upper Stone Canyon Reservoir, CA Hourly Weather - Cloudy - 10:00 PM Upper Stone Canyon Reservoir, CA Hourly Weather - Cloudy - 11:00 PM Upper Stone Canyon Reservoir, CA Hourly Weather - Cloudy - 12:00 AM Upper Stone Canyon Reservoir, CA Hourly Weather - Clear - 1:00 AM Upper Stone Canyon Reservoir, CA Hourly Weather - Clear - 2:00 AM Upper Stone Canyon Reservoir, CA Hourly Weather - Clear - 3:00 AM Upper Stone Canyon Reservoir, CA Hourly Weather - Mostly Cloudy - 4:00 AM Upper Stone Canyon Reservoir, CA Hourly Weather - Mostly Cloudy - 5:00 AM Upper Stone Canyon Reservoir, CA Hourly Weather - Mostly Cloudy - 6:00 AM Upper Stone Canyon Reservoir, CA Hourly Weather - Cloudy - 7:00 AM Upper Stone Canyon Reservoir, CA Hourly Weather - Cloudy - 8:00 AM Upper Stone Canyon Reservoir, CA Hourly Weather - Cloudy - 9:00 AM Upper Stone Canyon Reservoir, CA Hourly Weather - Mostly Clear - 10:00 AM
Clear Clear Clear Clear Clear Clear Clear Clear Mostly Cloudy Mostly Cloudy Mostly Cloudy Cloudy Cloudy Cloudy Clear Clear Clear Mostly Cloudy Mostly Cloudy Mostly Cloudy Cloudy Cloudy Cloudy Mostly Clear
75°F24°C 76°F24°C 76°F24°C 77°F25°C 76°F24°C 76°F24°C 75°F24°C 73°F23°C 72°F22°C 70°F21°C 69°F21°C 69°F21°C 68°F20°C 68°F20°C 68°F20°C 68°F20°C 68°F20°C 69°F21°C 69°F21°C 70°F21°C 70°F21°C 71°F22°C 72°F22°C 74°F23°C
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1% 1% 1% 1% 1% 1% 1% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
68°F20°C 68°F20°C 67°F19°C 67°F19°C 66°F19°C 66°F19°C 65°F18°C 65°F18°C 66°F19°C 66°F19°C 67°F19°C 67°F19°C 68°F20°C 68°F20°C 67°F19°C 67°F19°C 67°F19°C 66°F19°C 66°F19°C 66°F19°C 66°F19°C 66°F19°C 66°F19°C 65°F18°C
79% 76% 74% 71% 71% 71% 71% 76% 81% 87% 93% 93% 100% 100% 97% 97% 97% 90% 90% 87% 87% 84% 81% 74%
SW SW SW SW SW SW SW SW SW SW SW SW SSE SSE S S SSE SW SW SW SSE S SSE SW
7 mph 7 mph 8 mph 8 mph 8 mph 8 mph 8 mph 8 mph 6 mph 6 mph 6 mph 3 mph 3 mph 3 mph 1 mph 1 mph 1 mph 1 mph 1 mph 1 mph 2 mph 2 mph 2 mph 6 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
Clouds
Temperature
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POP
Dewpoint
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POP = Probability of Precipitation. ** Indicates missing data/values from KSMO model statistics.

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Prob Precip % = Probability of Precipitation.

Upper Stone Canyon Reservoir 36 Hour Forecast

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

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