May 30, 2026 3:02 PM

Pop-Up Thunderstorms are in the Forecast

HIGH DESERT, CA. (Pain In The Pass) >> The Southern California Weather Force Forecast calls for mostly sunny skies for Wednesday with a 20% chance of scattered afternoon and evening showers and thunderstorms. The high will be mid 100s to 110+ degrees. 

A promising weather pattern change begins on Friday with temperatures will feel more normal across Southern California before another warming trend..

Today thunderstorms will be high-based and can produce little to a lot of precipitation at times, especially considering the faster movement of storm activity. Each thunderstorm cell will also be capable of producing gusty, erratic outflow winds, gusting upwards of 45 to 60+ mph in region.

The heaviest downpours can have the potential to bring a quick 1-2 inches of rain. The risk for localized flash flooding is low, but cannot be ruled out because the ground is dry and the burn scars areas.

“When Thunder Roars, Go Indoors”

If you travel through the Cajon Pass or on Interstate 15 expect traffic due to the weather condition can change quickly. Remember to SLOW DOWN in the rain and or blowing dust.

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Cajon Pass
3:02 pm, May 30, 2026
temperature icon 79°F
clear sky
Humidity: 20 %
Pressure: 1012 mb
Wind: 2 mph
Wind Gust: 8 mph
Clouds: 0%
Visibility: 10 km
Sunrise: 5:39 am
Sunset: 7:55 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
5:00 pm
temperature icon
68°/75°°F 0 mm 0% 10 mph 23% 1013 mb 0 mm/h
8:00 pm
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61°/67°°F 0 mm 0% 6 mph 38% 1014 mb 0 mm/h
11:00 pm
temperature icon
56°/56°°F 0 mm 0% 3 mph 52% 1015 mb 0 mm/h
2:00 am
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54°/54°°F 0 mm 0% 2 mph 48% 1013 mb 0 mm/h
5:00 am
temperature icon
53°/53°°F 0 mm 0% 3 mph 46% 1013 mb 0 mm/h
8:00 am
temperature icon
66°/66°°F 0 mm 0% 4 mph 28% 1014 mb 0 mm/h
11:00 am
temperature icon
77°/77°°F 0 mm 0% 2 mph 19% 1012 mb 0 mm/h
2:00 pm
temperature icon
83°/83°°F 0 mm 0% 11 mph 13% 1010 mb 0 mm/h