Summer does not officially begin until June 21, but the season’s full heat is expected to blister the Sacramento region Monday. A high of 103 degrees is predicted for the capital, and afternoon highs throughout Northern California will be significantly above average.
As usual, the hottest valley conditions are forecast farther north where Redding and Red Bluff should peak at about 106 degrees, the National Weather Service predicts. Sacramento is expected to hit triple-digits for the first time in 2015 at about mid-afternoon Monday.
Tom Dang, meteorologist at the NWS Sacramento office, noted that 100-degree readings in early June are not unusual in Sacramento.
“We normally hit 100 degrees about this time of year,” said Dang. “Last year, we hit 100 degrees on June 8 as well. We had a pretty cool run up until now. May was a below-normal temperature month.”
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Overnight, temperatures generally stayed 5 to 12 degrees warmer than the previous night, leading to the toasty prediction for today.
Still, there’s not much chance that records will be broken for June 8, which was a scorcher up and down the valley in 2013:
▪ Redding Airport, 111 degrees.
▪ Red Bluff, 112 degrees.
▪ Sacramento, 108 degrees.
Look for high temperatures to dip on Tuesday, down to 93 degrees in Sacramento. A slight chance of showers and thunderstorms is forecast for Tuesday night as post-tropical moisture from hurricane Blanca moves north over the region, interacting with a low-pressure system from the coast.
“There is potential for some showers and/or thunderstorms not unlike what we saw a few nights ago,” Dang said. “It’s one of those hit-or-miss type things. At the very least, the moisture should help to cool things down a little bit.”
Here are some heat-related weather facts from the NWS:
▪ The average number of 100-degree readings or higher during summer is 23.
▪ in 2014, there were 19 days with high temperatures of 100 degrees or hotter.
▪ The most days with readings of 100 degrees or higher is 41 in 1998.
▪ The hottest day in 2014 107, reached June 9 and Aug. 1.
▪ Last year, the first 100-degree day was June 8 when the temperature reached 104 degrees.
▪ The earliest 100-degree day was May 4, 1990.
▪ The latest 100-degree day was Oct. 10, 1991.
▪ Three years have had no temperatures of 100 degrees or higher, the last time in 1907.
▪ The hottest day in Sacramento history was on July 17, 1925, when the temperature was 114 degrees.
▪ Most consecutive days of 100 degrees or hotter is 11, set July 16-26, 2006.