Weather World
City of Montclair, CAMontclair, CA 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Montclair, CA Weather Forecast
Montclair, CA Weather Forecast Date: 538 AM PDT Mon Sep 07 2026
The area/counties/county of: San Bernardino And Riverside County Valleys, including the cities of: Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, and Corona.or toggle through each period.
Today... Partly cloudy this morning...Becoming mostly sunny. A slight chance of showers and thunderstorms. Warmer. Highs 88 to 94. Light winds becoming northwest 10 mph this afternoon. Chance of measurable precipitation 20%.
Tonight... Mostly clear in the evening...Becoming partly cloudy. Lows 67 to 71. Areas of winds northwest to 10 mph in the evening becoming light.
Tuesday... Partly cloudy in the morning...Becoming mostly sunny. Highs 92 to 99. Light winds becoming west 10 to 15 mph in the afternoon.
Tuesday Night... Mostly clear. A slight chance of showers in the evening. Lows 69 to 74. Areas of winds northwest to 10 mph in the evening becoming light. Chance of measurable precipitation 20%.
Wednesday... Mostly sunny. A slight chance of showers in the afternoon. Highs 97 to 103. Light winds becoming west to 10 mph with gusts to 25 mph in the afternoon. Chance of measurable precipitation 20%.
Wednesday Night... Partly cloudy in the evening...Becoming mostly clear. Lows 70 to 75.
Thursday... Mostly sunny. Highs 95 to 101.
Thursday Night... Clear. Lows 67 to 73.
Friday... Sunny. Highs 91 to 97.
Friday Night... Clear. Lows 61 to 67.
Saturday... Mostly sunny. Highs 87 to 93.
Saturday Night... Clear. Lows 57 to 64.
POP = Probability of Precipitation
Montclair Radar Loop
Use the map search tool if you want to place a location marker on the radar map...