LYNNWOOD, Wash., July 24, 2022 – The National Weather Service has issued an excessive heat watch starting 12 p.m. Tuesday, July 26 until 10 p.m. Thursday, July 29 for Snohomish County. Daily temperatures are expected to fluctuate between 58°F to 84°F.

Upcoming Weather Forecast (July 24 to July 30) for Snohomish County

• Sunday (July 24): Mostly clear, with a low around 58. West northwest wind 5 to 10 mph becoming light and variable in the evening.
• Monday (July 25): Sunny, with a high near 77. Calm wind becoming west northwest 5 to 8 mph in the morning.
• Monday Night: Mostly clear, with a low around 62. West northwest wind 3 to 7 mph.
• Tuesday (July 26): Sunny, with a high near 84. Calm wind becoming west northwest 5 to 7 mph in the morning.
• Tuesday Night: Mostly clear, with a low around 65. West northwest wind 5 to 7 mph becoming light and variable in the evening.
• Wednesday (July 27): Sunny, with a high near 84.
• Wednesday Night: Mostly clear, with a low around 63.
• Thursday (July 28): Sunny, with a high near 82.
• Thursday Night: Mostly clear, with a low around 63.
• Friday (July 29): Sunny, with a high near 81.
• Friday Night: Mostly clear, with a low around 62.
• Saturday (July 30): Sunny, with a high near 78.
• Saturday Night: Partly cloudy, with a low around 61.
• Sunday (July 31): Mostly sunny, with a high near 78.

Heat warning vs. watch vs. advisory

Excessive heat poses a significant risk to people’s health, including heat stroke and heat exhaustion, which can result in death. Excessive heat generally means unusually hot temperatures, possibly combined with oppressive humidity, that persists for two or more days.

An Excessive Heat Watch is typically issued two to five days ahead of possible dangerous heat conditions. Certainty regarding the development and timing of the event is lower than a warning.

An Excessive Heat Warning, sometimes preceded by an Excessive Heat Watch, is typically issued within one to three days of the onset of extremely dangerous heat conditions and remains in effect until the extreme danger subsides. Certainty is high that the event will occur

A Heat Advisory is typically issued within one to three days of the onset of dangerous heat and remains in effect until the danger subsides. These conditions pose a lesser, but still dangerous, risk to communities. Certainty is high that conditions will occur.