April 20, 2026 12:46 AM

A Cooling Trend 5 Day Work Forecast

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday April 20 through Friday April 24 for Southern California. Check out the 5-day forecast below in your area.

Cajon Pass/Inland Empire Valley Area Average Weather/Temps:

Monday will be warm, mostly sunny, and a high of 81°. Tuesday will be cool, partly cloudy with afternoon rain showers, with a high of 76°. Wednesday will be cool, partly sunny with a chance of morning rain showers, and a high of 72°. Thursday will be warm, mostly sunny, and a high of 77°. Friday will be warm, partly cloudy, and a high of 77°.

High Deserts Area Average Weather/Temps:

Monday will be warm, sunny, windy, and a high of 80+°. Tuesday will be cool, partly cloudy with a chance of afternoon rain showers, gusty winds, and a high of 69+°. Wednesday will be cool, partly sunny, windy and a high of 66+°. Thursday will be cool, sunny, windy, and a high of 71+°. Friday will be cool, mostly sunny, windy, and a high 74+°. Higher temps in the Barstow area.

Mountains Area Average Weather/Temps:

Monday will be cold, sunny, windy, and a high of 64°. Tuesday will be cold, partly cloudy with rain/snow showers in the afternoon/night, gusty winds, and a high of 59°. Wednesday will be cold, partly sunny, windy, and a high of 49°. Thursday will be cold, mostly sunny, windy, and a high of 53°. Friday will be cold, partly sunny, windy, and a high of 56°.

*Timing of the Weather on each day can change.

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Cajon Pass
12:46 am, Apr 20, 2026
temperature icon 48°F
few clouds
Humidity: 64 %
Pressure: 1015 mb
Wind: 8 mph
Wind Gust: 10 mph
Clouds: 20%
Visibility: 10 km
Sunrise: 6:11 am
Sunset: 7:24 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
2:00 am
temperature icon
46°/46°°F 0 mm 0% 7 mph 64% 1014 mb 0 mm/h
5:00 am
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47°/49°°F 0 mm 0% 5 mph 65% 1014 mb 0 mm/h
8:00 am
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50°/53°°F 0 mm 0% 4 mph 46% 1015 mb 0 mm/h
11:00 am
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68°/68°°F 0 mm 0% 7 mph 15% 1014 mb 0 mm/h
2:00 pm
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72°/72°°F 0 mm 0% 18 mph 14% 1013 mb 0 mm/h
5:00 pm
temperature icon
68°/68°°F 0 mm 0% 17 mph 20% 1011 mb 0 mm/h
8:00 pm
temperature icon
57°/57°°F 0 mm 0% 13 mph 42% 1013 mb 0 mm/h
11:00 pm
temperature icon
53°/53°°F 0 mm 0% 11 mph 46% 1014 mb 0 mm/h