Thursday Comes the Solstice Officially Starting Summer, Bringing With It Warming Weather

Published : Thursday, June 21, 2018 | 4:53 AM

A high pressure is building over the region, as Thursday welcomes the summer solstice marking the official start of summer in the northern hemisphere.

The high pressure ridge is expected to bring above normal temperatures to most areas Thursday – especially away from the coast – and fair skies through Friday, which should be the warmest day this week in Pasadena.

In fact, meteorologist Dave Bruno at the National Weather Service said that warm temperatures, about eight to 12 degrees above normal inland, should persist until the weekend, with highs in the San Gabriel Valley reaching the 90s and 100s.

The summer solstice occurs when the sun reaches its highest point in the sky – also the northernmost point in the sky, in the case of the northern hemisphere.

The word “solstice” is derived from the Latin “solstitium” – from “sol” (the Sun) and “stitium” (standing) – and reflects the fact that on the solstice, the Sun appears to stop moving in the sky as it reaches its northernmost point. After the solstice, the Sun appears to reverse course and head back in the opposite direction.

Thursday should be sunny, with a high near 89.

Thursday night should be clear, with a low around 61. A south southwest wind at around five mph becomes calm in the evening.

Friday should be sunny, with a high near 92 and a light and variable wind becoming south southwest at five to 10 mph in the afternoon.

Friday night should be clear, with a low around 60.

Saturday should be sunny, with a high near 90.

Saturday night should be mostly clear, with a low around 61.

Sunday should be sunny, with a high near 86.

Sunday night should be mostly clear, with a low around 60.

Monday should be sunny, with a high near 88.

Monday night should be mostly clear, with a low around 60.

Tuesday should be sunny, with a high near 89.

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