Lake O'Neill, CA 14 Day Weather
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Lake O'Neill, CA Weather Forecast


Lake O'Neill, CA Weather Forecast Dated: 551 AM Tue Sep 29 2026
Expect a very warm period with plenty of sunshine and mostly dry weather over the coming period. moderate humidity and an unsettled pattern will dominate.
Tuesday, September 29, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
79°F 26°C
Sunny
Early-Evening
70°F 21°C
Sunny
Pleasant near 79°F 26°C, sunny throughout the day, with increasing humidity and steady pressure. Winds turning from the N to the SSE at 5 mph 8 km/h.
Wednesday, September 30, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
79°F 26°C
Sunny
Early-Evening
70°F 21°C
Sunny
Comfortable with temperatures reaching 79°F 26°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the SSE to the N at 4 mph 6 km/h.
Thursday, October 1, 2026
Mid-Morning
76°F 24°C
Sunny
Mid-Afternoon
86°F 30°C
Sunny
Early-Evening
73°F 23°C
Sunny
Quite warm around 86°F 30°C, sunny throughout the day, with increasing humidity and steady pressure. Winds moving from the NW to the N at 3 mph 5 km/h.
Friday, October 2, 2026
Mid-Morning
86°F 30°C
Sunny
Mid-Afternoon
97°F 36°C
Sunny
Early-Evening
84°F 29°C
Sunny
Hot temperatures near 97°F 36°C, sunny throughout the day, with increasing humidity and steady pressure. Winds swinging from the NW to the SSE at 5 mph 9 km/h.
Saturday, October 3, 2026
Mid-Morning
88°F 31°C
Sunny
Mid-Afternoon
94°F 35°C
Sunny
Early-Evening
82°F 28°C
Sunny
Very hot with a high of 94°F 35°C, sunny throughout the day, with increasing humidity and steady pressure. Winds shifting from the ESE to the S at 4 mph 7 km/h.
Sunday, October 4, 2026
Mid-Morning
90°F 32°C
Sunny
Mid-Afternoon
98°F 37°C
Sunny
Early-Evening
86°F 30°C
Sunny
Very hot with temperatures reaching 98°F 37°C, sunny throughout the day, with steady humidity and steady pressure.
Monday, October 5, 2026
Mid-Morning
91°F 33°C
Sunny
Mid-Afternoon
95°F 35°C
Overcast
Early-Evening
89°F 32°C
Sunny
Hot and sweltering around 95°F 35°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds turning from the E to the WSW at 3 mph 5 km/h.
Tuesday, October 6, 2026
Mid-Morning
90°F 32°C
Sunny
Mid-Afternoon
91°F 33°C
Partly Cloudy
Early-Evening
84°F 29°C
Overcast
Sizzling hot with 91°F 33°C, sunny in the morning, becoming cloudy through the afternoon and evening, with increasing humidity and steady pressure. Winds switching from the SE to the WSW at 4 mph 5 km/h.
Wednesday, October 7, 2026
Mid-Morning
87°F 31°C
Overcast
Mid-Afternoon
89°F 32°C
Light Showers
Early-Evening
80°F 27°C
Overcast
Warm temperatures up to 89°F 32°C, dry early, with showers developing in the afternoon, with increasing humidity and steady pressure. Winds moving from the E to the SSW at 4 mph 7 km/h.
Thursday, October 8, 2026
Mid-Morning
81°F 27°C
Overcast
Mid-Afternoon
83°F 28°C
Overcast
Early-Evening
77°F 25°C
Overcast
Very warm with a high of 83°F 28°C, overcast throughout the day, with steady humidity and steady pressure.
Friday, October 9, 2026
Mid-Morning
75°F 24°C
Scattered Showers
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
77°F 25°C
Sunny
Warm and summery near 82°F 28°C, scattered downpours possible, with steady humidity and steady pressure. Winds swinging from the SSE to the SSW at 6 mph 9 km/h.
Saturday, October 10, 2026
Mid-Morning
75°F 24°C
Sunny
Mid-Afternoon
79°F 26°C
Scattered Showers
Early-Evening
74°F 23°C
Scattered Showers
Comfortable with temperatures reaching 79°F 26°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds shifting from the SW to the W at 4 mph 7 km/h.
Sunday, October 11, 2026
Mid-Morning
74°F 23°C
Sunny
Mid-Afternoon
79°F 26°C
Sunny
Early-Evening
73°F 23°C
Sunny
Enjoyable around 79°F 26°C, sunny throughout the day, with steady humidity and steady pressure. Winds turning from the SSE to the W at 5 mph 8 km/h.
Monday, October 12, 2026
Mid-Morning
72°F 22°C
Sunny
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
71°F 21°C
Sunny
Mild temperatures up to 77°F 25°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the W to the WSW at 7 mph 10 km/h.
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