September heat wave dangerous for gardeners

“Labor Day will be very hot across interior #NorCal as the current heatwave cranks up another notch!” tweeted the weather service. “Most of the Central Valley is expected to see high temperatures above 110 degrees this afternoon. Practice heat safety!”

This string of extremes is unusual, added the weather service. “How significant is this September Heatwave? Several high and warm low temperature records could be broken, as well as the number of 100° and 110° days in a calendar year,” it tweeted.

On Monday, the weather service estimated that Downtown Sacramento had an 80% chance of breaking September’s all-time record of 109 degrees. That mark was tied on Labor Day 2020. Local predictions ranged from 110 to 112 degrees.

But the heat doesn’t stop there. The weather service says there’s an almost 1 in 4 chance – 24% – that Downtown Sacramento hits its all-time record high temperature of 114 degree on Tuesday; maybe not break it, but match it. Ouch!

“A prolonged period of dangerous heat is expected across interior NorCal this week (during this) excessive heat event,” the weather service says. “Everyone is at risk for heat-related illnesses if precautions are not taken. Drink plenty of water, seek air conditioning, and avoid spending time outdoors.”

No matter how much we want to go out and work in our gardens, now is not the time. Water as early as possible. Harvest anything that’s close to ripe. Then, retreat to some space in front of a fan. Show your houseplants some TLC.

Fortunately, the “heat dome” causing this triple-digit spree can’t stay there forever. The weather service expects temperatures to cool back to normal – 91 degrees – by Sunday.

For more on Sacramento weather: https://www.weather.gov/sto/