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Union Square, CA 14 Day Weather
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Union Square, CA Weather Forecast
Union Square, CA Weather Forecast Dated: 255 PM Thu Sep 10 2026
Expect a hot stretch with plenty of sunshine and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.
Thursday, September 10, 2026
Mid-Morning
76°F 24°C
Sunny
Mid-Afternoon
103°F 39°C
Overcast
Early-Evening
89°F 32°C
Sunny
Scorching hot near 103°F 39°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling. Winds picking up from NNE at 2 mph 3 km/h to WSW at 10 mph 15 km/h.
Friday, September 11, 2026
Mid-Morning
76°F 24°C
Sunny
Mid-Afternoon
98°F 37°C
Sunny
Early-Evening
84°F 29°C
Sunny
Hot and sweltering around 98°F 37°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the NNW to the WSW at 8 mph 13 km/h.
Saturday, September 12, 2026
Mid-Morning
73°F 23°C
Sunny
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
72°F 22°C
Sunny
Quite warm around 82°F 28°C, sunny throughout the day, with steady humidity and steady pressure. Winds increasing from the W at 3 mph 4 km/h to WSW at 11 mph 18 km/h.
Sunday, September 13, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
85°F 29°C
Sunny
Early-Evening
78°F 25°C
Sunny
Warm temperatures up to 85°F 29°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds swinging from the NW to the W at 9 mph 14 km/h.
Monday, September 14, 2026
Mid-Morning
68°F 20°C
Sunny
Mid-Afternoon
91°F 33°C
Partly Cloudy
Early-Evening
80°F 27°C
Sunny
Very hot with a high of 91°F 33°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds shifting from the NW to the WSW at 9 mph 14 km/h.
Tuesday, September 15, 2026
Mid-Morning
67°F 19°C
Sunny
Mid-Afternoon
91°F 33°C
Sunny
Early-Evening
81°F 27°C
Sunny
Very hot with temperatures reaching 91°F 33°C, sunny throughout the day, with lower humidity and steady pressure.
Wednesday, September 16, 2026
Mid-Morning
70°F 21°C
Sunny
Mid-Afternoon
94°F 34°C
Sunny
Early-Evening
83°F 28°C
Sunny
Hot and sweltering around 94°F 34°C, sunny throughout the day, with lower humidity and steady pressure.
Thursday, September 17, 2026
Mid-Morning
72°F 22°C
Sunny
Mid-Afternoon
96°F 35°C
Sunny
Early-Evening
84°F 29°C
Sunny
Sizzling hot with 96°F 35°C, sunny throughout the day, with lower humidity and steady pressure. Winds WNW at 6 mph 9 km/h.
Friday, September 18, 2026
Mid-Morning
70°F 21°C
Sunny
Mid-Afternoon
92°F 33°C
Cloudy
Early-Evening
80°F 27°C
Sunny
Hot temperatures near 92°F 33°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds switching from the NNW to the WNW at 8 mph 12 km/h.
Saturday, September 19, 2026
Mid-Morning
68°F 20°C
Sunny
Mid-Afternoon
91°F 33°C
Sunny
Early-Evening
80°F 27°C
Sunny
Very hot with a high of 91°F 33°C, sunny throughout the day, with lower humidity and steady pressure. Winds moving from the NW to the WNW at 7 mph 11 km/h.
Sunday, September 20, 2026
Mid-Morning
69°F 21°C
Cloudy
Mid-Afternoon
97°F 36°C
Sunny
Early-Evening
88°F 32°C
Overcast
Very hot with temperatures reaching 97°F 36°C, overcast in the morning, partly cloudy in the afternoon, and cloudy this evening, with lower humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
78°F 26°C
Sunny
Mid-Afternoon
102°F 39°C
Sunny
Early-Evening
92°F 33°C
Sunny
Dangerously hot with a high of 102°F 39°C, sunny throughout the day, with lower humidity and steady pressure.
Tuesday, September 22, 2026
Mid-Morning
78°F 26°C
Sunny
Mid-Afternoon
102°F 39°C
Sunny
Early-Evening
90°F 32°C
Sunny
Scorching hot near 102°F 39°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds swinging from the NW to the S at 7 mph 12 km/h.
Wednesday, September 23, 2026
Mid-Morning
76°F 24°C
Overcast
Mid-Afternoon
98°F 37°C
Partly Cloudy
Early-Evening
87°F 31°C
Overcast
Hot temperatures near 98°F 37°C, overcast in the morning, partly cloudy in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds shifting from the WNW to the S at 6 mph 10 km/h.
Union Square, CA Weather Radar Map
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