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      • Environmental Impact

        Greater Pasadena Area and San Gabriel Valley Set for Major Warmup After Early-Week Chill

        • News Desk
          • May 4, 2026
          • 0 comments
      mountains and clouds

      The San Gabriel Mountains as seen from Monrovia (Photo – W.K.)

      Cool, moist weather will dominate the start of the week across the Greater Pasadena Area and San Gabriel Valley, but a dramatic shift toward warm, dry conditions is on the horizon.

      By News Desk

      Monday night brings a 30% chance of light rain, with lows near 51°F and occasional gusts up to 15 mph. Rainfall totals are expected to stay under a tenth of an inch.

      A slight 20% chance of showers lingers into Tuesday, though skies will turn partly sunny as temperatures reach 65°F. By Tuesday night, conditions calm under partly cloudy skies with lows again around 51°F.

      Beginning Wednesday, the region enters a steady warming trend. Sunshine returns with a high near 76°F, followed by mostly clear skies overnight.

      From there, temperatures climb rapidly:

      • Thursday: Sunny, high near 83°F
      • Friday: Sunny, high near 85°F
      • Saturday: Sunny, high near 87°F
      • Sunday: Sunny, high near 90°F

      Overnight lows will gradually rise from the mid-50s to the low 60s as the warmup continues.

      After a breezy, damp start, residents can expect a return to bright, dry, and increasingly hot conditions heading into the weekend.

      Tagged: Greater Pasadena Area and San Gabriel Valley Set for Major Warmup After Early-Week ChillAltadenaMonroviaPasadena

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          Our News Desk department consists of a collective of news gatherers in order to keep the community informed and safe.

          Award-winning Colorado Boulevard Newspaper is your go-to source for informative news, engaging events, and vibrant community life in the greater Pasadena area. We’re proud to be recognized for excellence in journalism and remain committed to informing, educating, and collaborating to create a better world, both locally and globally.

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