Stem Trail, CA 14 Day Weather
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Stem Trail, CA Weather Forecast


Stem Trail, CA Weather Forecast Dated: 1136 PM Fri Sep 18 2026
Expect a very warm period with plenty of sunshine and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.
Friday, September 18, 2026
Mid-Morning
66°F 19°C
Sunny
Mid-Afternoon
85°F 30°C
Sunny
Early-Evening
70°F 21°C
Sunny
Warm and summery near 85°F 30°C, sunny throughout the day, with steady humidity and barometric pressure falling.
Saturday, September 19, 2026
Mid-Morning
68°F 20°C
Sunny
Mid-Afternoon
89°F 32°C
Sunny
Early-Evening
72°F 22°C
Overcast
Balmy with temperatures reaching 89°F 32°C, sunny through the afternoon, turning overcast this evening, with steady humidity and barometric pressure falling. Winds turning from the S to the W at 5 mph 7 km/h.
Sunday, September 20, 2026
Mid-Morning
64°F 18°C
Overcast
Mid-Afternoon
84°F 29°C
Overcast
Early-Evening
67°F 19°C
Cloudy
Quite warm around 84°F 29°C, overcast through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
65°F 18°C
Sunny
Mid-Afternoon
86°F 30°C
Sunny
Early-Evening
69°F 21°C
Sunny
Warm temperatures up to 86°F 30°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the SSW to the WSW at 5 mph 7 km/h.
Tuesday, September 22, 2026
Mid-Morning
69°F 20°C
Sunny
Mid-Afternoon
90°F 32°C
Sunny
Early-Evening
70°F 21°C
Sunny
Very hot with a high of 90°F 32°C, sunny throughout the day, with increasing humidity and steady pressure. Winds moving from the WSW to the SSW at 4 mph 7 km/h.
Wednesday, September 23, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
91°F 33°C
Overcast
Early-Evening
74°F 24°C
Overcast
Very hot with temperatures reaching 91°F 33°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure.
Thursday, September 24, 2026
Mid-Morning
71°F 22°C
Overcast
Mid-Afternoon
87°F 30°C
Overcast
Early-Evening
71°F 22°C
Overcast
Balmy with temperatures reaching 87°F 30°C, overcast throughout the day, with steady humidity and steady pressure.
Friday, September 25, 2026
Mid-Morning
69°F 21°C
Partly Cloudy
Mid-Afternoon
87°F 31°C
Overcast
Early-Evening
72°F 23°C
Sunny
Quite warm around 87°F 31°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure.
Saturday, September 26, 2026
Mid-Morning
65°F 18°C
Cloudy
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
66°F 19°C
Sunny
Warm temperatures up to 82°F 28°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds swinging from the SSW to the WSW at 4 mph 7 km/h.
Sunday, September 27, 2026
Mid-Morning
65°F 18°C
Sunny
Mid-Afternoon
86°F 30°C
Sunny
Early-Evening
70°F 21°C
Sunny
Very warm with a high of 86°F 30°C, sunny throughout the day, with lower humidity and steady pressure.
Monday, September 28, 2026
Mid-Morning
66°F 19°C
Sunny
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
67°F 20°C
Sunny
Warm and summery near 82°F 28°C, sunny throughout the day, with increasing humidity and steady pressure. Winds blowing from the SW at 8 mph 12 km/h.
Tuesday, September 29, 2026
Mid-Morning
60°F 16°C
Sunny
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
58°F 15°C
Sunny
Comfortable with temperatures reaching 73°F 23°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds increasing from the W at 4 mph 7 km/h to WNW at 12 mph 19 km/h. Gusts up to 24 mph 38 km/h.
Wednesday, September 30, 2026
Mid-Morning
56°F 14°C
Sunny
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
64°F 18°C
Sunny
Enjoyable around 75°F 24°C, sunny throughout the day, with lower humidity and steady pressure. Winds switching from the N to the NNW at 5 mph 9 km/h.
Thursday, October 1, 2026
Mid-Morning
65°F 18°C
Sunny
Mid-Afternoon
79°F 26°C
Sunny
Early-Evening
69°F 21°C
Sunny
Mild temperatures up to 79°F 26°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds moving from the NNE to the NW at 8 mph 13 km/h.
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