April 20, 2026 6:01 AM

Hot Weather for the First Week of Spring

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday March 23 through Friday March 27 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 hot, sunny, and a high of 92°. Tuesday will be hot, sunny, with a high of 94°. Wednesday will be hot, mostly sunny, and a high of 94°. Thursday will be hot, mostly sunny, and a high of 93°. Friday will be hot, mostly sunny, and a high of 95°.

High Deserts Area Average Weather/Temps:

Monday will be warm, sunny, windy, and a high of 89+°. Tuesday will be hot, sunny, windy, and a high of 90+°. Wednesday will be hot sunny, windy and a high of 90+°. Thursday will be hot, sunny, windy, and a high of 88+°. Friday will be hot, mostly sunny, windy, and a high 87+°. Higher temps in the Barstow area.

Mountains Area Average Weather/Temps:

Monday will be cool, sunny, windy, and a high of 72°. Tuesday will be warm, sunny, windy, and a high of 74°. Wednesday will be warm, sunny, windy, and a high of 72°. Thursday will be warm, sunny, windy, and a high of 72°. Friday will be warm, mostly sunny, windy, and a high of 70°.

*Timing of the Weather on each day can change.

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Cajon Pass
6:01 am, Apr 20, 2026
temperature icon 43°F
clear sky
Humidity: 67 %
Pressure: 1014 mb
Wind: 4 mph
Wind Gust: 4 mph
Clouds: 5%
Visibility: 10 km
Sunrise: 6:11 am
Sunset: 7:24 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
8:00 am
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46°/51°°F 0 mm 0% 4 mph 61% 1014 mb 0 mm/h
11:00 am
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60°/68°°F 0 mm 0% 7 mph 33% 1014 mb 0 mm/h
2:00 pm
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72°/72°°F 0 mm 0% 18 mph 15% 1013 mb 0 mm/h
5:00 pm
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68°/68°°F 0 mm 0% 17 mph 20% 1011 mb 0 mm/h
8:00 pm
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57°/57°°F 0 mm 0% 13 mph 42% 1013 mb 0 mm/h
11:00 pm
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47°/47°°F 0 mm 0% 11 mph 47% 1015 mb 0 mm/h
2:00 am
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48°/48°°F 0 mm 0% 9 mph 50% 1015 mb 0 mm/h
5:00 am
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46°/46°°F 0 mm 0% 8 mph 45% 1015 mb 0 mm/h