April 20, 2026 3:28 AM

Hot Weather for the End of Winter

SOUTHERN CALIFORNIA, CA. (Pain In The Pass) >> This week’s weather forecast for Monday March 16 through Friday March 20 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 93°. Tuesday will be hot, sunny, with a high of 100°. Wednesday will be hot, sunny, and a high of 100°. Thursday will be hot, sunny, and a high of 96°. Friday will be hot, mostly sunny, and a high of 93°.

High Deserts Area Average Weather/Temps:

Monday will be warm, sunny, windy, and a high of 88+°. Tuesday will be hot, sunny, windy, and a high of 95+°. Wednesday will be hot sunny, windy and a high of 97+°. Thursday will be hot, sunny, windy, and a high of 97+°. Friday will be hot, mostly sunny, gusty winds, and a high 97+°. Higher temps in the Barstow area.

Mountains Area Average Weather/Temps:

Monday will be cool, sunny, windy, and a high of 73°. Tuesday will be warm, sunny, windy, and a high of 77°. Wednesday will be warm, sunny, windy, and a high of 80°. Thursday will be warm, sunny, gusty winds, and a high of 82°. Friday will be warm, mostly sunny, gusty winds, and a high of 82°.

*Timing of the Weather on each day can change.

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Cajon Pass
3:28 am, Apr 20, 2026
temperature icon 45°F
clear sky
Humidity: 62 %
Pressure: 1014 mb
Wind: 6 mph
Wind Gust: 7 mph
Clouds: 8%
Visibility: 10 km
Sunrise: 6:11 am
Sunset: 7:24 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
5:00 am
temperature icon
47°/48°°F 0 mm 0% 5 mph 63% 1014 mb 0 mm/h
8:00 am
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50°/52°°F 0 mm 0% 4 mph 49% 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
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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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53°/53°°F 0 mm 0% 11 mph 46% 1014 mb 0 mm/h
2:00 am
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49°/49°°F 0 mm 0% 8 mph 48% 1015 mb 0 mm/h