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MOST ACCURATE FORECAST: First 90s of the year coming to the Valley this week!

High pressure is building in over the Desert Southwest, bringing a major warm-up to Arizona!

First 90s of the year coming to the Valley this week

By: Jorge Torres

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and last updated

PHOENIX — High pressure is building in over the Desert Southwest, bringing a major warm-up to Arizona!

Temperatures across the Valley will climb into the mid 80s to upper 80s through the middle of the week, putting us around 15 degrees above normal.

By Thursday, Phoenix could hit the 90s for the first time this year.

On average, our first 90s don't come until late March, so this is around a month sooner than normal. We did hit the 90s last February though, marking our first 90-degree day on February 25th.

Phoenix has only had temperatures in the 90s in February 8 times on record, so temperatures this warm this soon have historically been very rare.

It's not just a one and done day in the 90s, either. Phoenix could hit the 90s 5 days in a row, starting Thursday and continuing through next Monday.

Daily records are also in jeopardy. Phoenix could tie or break each daily record high over that 5 day stretch in the 90s.

Phoenix’s all-time February record high is 92 degrees, set in 1921 and 1986. With temperatures likely climbing well above 90 this week, we could come very close to that mark.

Overnight lows will get warmer, too. Starting Wednesday morning, lows in our warmest Valley spots are only expected to drop into the 60s.

Temperatures may drop slightly by the middle of next week as high pressure begins to weaken and a storm system potentially tracks through the Great Basin, but at this point the long-term outlook through the beginning of March has temperatures staying much warmer than normal.