Weather WorldSouth Mountain Reservoir, OR 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
South Mountain Reservoir, OR Weather Forecast
South Mountain Reservoir, OR Weather Forecast Date: 230 PM MDT Wed Aug 19 2026
or toggle through each period.
Tonight... Mostly clear. Lows 55 to 65. East winds 10 to 15 mph.
Thursday... Sunny. Highs 95 to 100. Southwest winds 10 to 15 mph.
Thursday Night... Mostly cloudy. Lows 58 to 68. West winds 10 to 15 mph.
Friday... Patchy smoke in the morning. Partly sunny. Highs 95 to 100. Southeast winds up to 10 mph.
Friday Night... Mostly cloudy. Lows 61 to 70. Northwest winds 10 to 15 mph in the evening, shifting to southwest after midnight.
Saturday... Decreasing clouds. Highs 90 to 95.
Saturday Night... Partly cloudy. Lows 52 to 62. Breezy.
Sunday... Mostly clear. Highs 85 to 91. Lows 51 to 61.
Sunday Night... Mostly clear. Highs 85 to 91. Lows 51 to 61.
Monday... Partly sunny in the morning, then clearing. Highs 87 to 93.
Monday Night... Partly cloudy with a slight chance of showers in the evening, then mostly cloudy after midnight. Chance of rain 20%. Lows 54 to 64.
Tuesday... Partly cloudy. Highs 87 to 94. Lows 54 to 64.
POP = Probability of Precipitation
South Mountain Reservoir Radar Loop
Use the map search tool if you want to place a location marker on the radar map...