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Alta Loma, CA Weather Forecast
Alta Loma, CA Weather Forecast Dated: 415 PM Sun Oct 18 2026
Expect a mild stretch with plenty of sunshine and occasional showers over the coming period. comfortable humidity and no major pressure swings will dominate.
Sunday, October 18, 2026
Mid-Morning
73°F 23°C
Sunny
Mid-Afternoon
85°F 30°C
Sunny
Early-Evening
79°F 27°C
Sunny
Warm and summery near 85°F 30°C, sunny throughout the day, with steady humidity and steady pressure. Winds turning from the E to the WSW at 8 mph 13 km/h.
Monday, October 19, 2026
Mid-Morning
74°F 24°C
Sunny
Mid-Afternoon
84°F 29°C
Sunny
Early-Evening
77°F 25°C
Sunny
Balmy with temperatures reaching 84°F 29°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the ESE to the WSW at 8 mph 13 km/h.
Tuesday, October 20, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
73°F 23°C
Sunny
Quite warm around 82°F 28°C, sunny throughout the day, with steady humidity and steady pressure. Winds increasing from the SSE at 1 mph 1 km/h to W at 9 mph 14 km/h.
Wednesday, October 21, 2026
Mid-Morning
67°F 20°C
Sunny
Mid-Afternoon
80°F 27°C
Sunny
Early-Evening
66°F 19°C
Cloudy
Warm temperatures up to 80°F 27°C, sunny through the afternoon, turning overcast this evening, with increasing humidity and steady pressure. Winds picking up from SSE at 1 mph 2 km/h to NW at 9 mph 14 km/h.
Thursday, October 22, 2026
Mid-Morning
65°F 19°C
Heavy Rain At Times
Mid-Afternoon
70°F 21°C
Scattered Thunderstorms
Early-Evening
65°F 18°C
Partly Cloudy
Mild with a high of 70°F 21°C, showers lingering into the afternoon before clearing, with steady humidity and steady pressure. Winds building from E at 2 mph 4 km/h to SW at 11 mph 17 km/h.
Friday, October 23, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
71°F 22°C
Sunny
Early-Evening
70°F 21°C
Sunny
Pleasant near 71°F 22°C, sunny throughout the day, with lower humidity and steady pressure.
Saturday, October 24, 2026
Mid-Morning
70°F 21°C
Sunny
Mid-Afternoon
81°F 27°C
Sunny
Early-Evening
77°F 25°C
Sunny
Balmy with temperatures reaching 81°F 27°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the NE to the SW at 7 mph 10 km/h.
Sunday, October 25, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
78°F 26°C
Sunny
Quite warm around 82°F 28°C, sunny throughout the day, with steady humidity and steady pressure.
Monday, October 26, 2026
Mid-Morning
71°F 22°C
Overcast
Mid-Afternoon
80°F 27°C
Sunny
Early-Evening
77°F 25°C
Sunny
Warm temperatures up to 80°F 27°C, overcast in the morning, cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure.
Tuesday, October 27, 2026
Mid-Morning
70°F 21°C
Sunny
Mid-Afternoon
78°F 26°C
Overcast
Early-Evening
73°F 23°C
Overcast
Mild with a high of 78°F 26°C, partly cloudy in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds switching from the WNW to the WSW at 8 mph 13 km/h.
Wednesday, October 28, 2026
Mid-Morning
67°F 19°C
Overcast
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
69°F 21°C
Sunny
Pleasant near 74°F 23°C, overcast in the morning, cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure.
Thursday, October 29, 2026
Mid-Morning
63°F 17°C
Sunny
Mid-Afternoon
69°F 20°C
Partly Cloudy
Early-Evening
64°F 18°C
Scattered Showers
Comfortable with temperatures reaching 69°F 20°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds moving from the ESE to the WSW at 9 mph 13 km/h.
Friday, October 30, 2026
Mid-Morning
60°F 15°C
Light Showers
Mid-Afternoon
61°F 16°C
Scattered Showers
Early-Evening
60°F 16°C
Scattered Showers
Refreshing around 61°F 16°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds swinging from the WSW to the SW at 8 mph 12 km/h.
Saturday, October 31, 2026
Mid-Morning
54°F 12°C
Overcast
Mid-Afternoon
61°F 16°C
Sunny
Early-Evening
60°F 16°C
Clear
Mildly cool near 61°F 16°C, overcast in the morning, cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure.
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