PHOENIX — Moisture has moved into Arizona as a weak piece of energy pushes in from Baja. This will increase the chance of isolated showers across the state tonight and tomorrow.
While the Valley will see clouds increase on Sunday, with only about a ten percent chance of sprinkles to a light scattered shower. Most of the activity will most likely be in the higher terrain in the mountains north and east of the valley.
Afternoon temperatures will drop out of the triple digits but will still be a few degrees above average, reaching the upper 90s through early next week.
Still breezy to gusty over the next few days as a low-pressure system begins to sweep through the region this week.
Phoenix has reached highs at 100 degrees or hotter for 123 days so far this year, and it looks like we're going to add several days to that count during this stretch. The average number of days that are that hot each year is 111 days. The all-time record number of days at 100 degrees or more stands at 145 days, set back in 2020.
Monsoon 2023 officially ended on September 30th it's going down as the driest on record with only 0.15 inches of rain at Phoenix Sky Harbor. The previous record was set back in 1924 when we measured 0.35 inches of rain that season. It was also the 2nd driest monsoon on record for all of Maricopa County.
Phoenix hit 110 degrees or hotter 55 days this year, breaking the old record of 53 days set in 2020.
Phoenix also reached a high of 115 degrees or hotter 22 days this year. That too is a new all-time record, topping the previous one of 14 days set in 2020.
When it comes to overnight temperatures, Phoenix had 35 days this year with lows in the 90s. The previous record was 28 days set in 2020.
September 10th this year also marked the latest day in any year with a low in the 90s. Previously the record was September 7, 2019.
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2023 Rainfall totals:
Sky Harbor Official Rainfall: 3.03" (-2.45" from average)
Valley Average (Phoenix Rainfall Index): 4.16"
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Daily rainfall reports from all across the Valley can be found here.
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PHOENIX IS GETTING DRIER - LOWER RAINFALL AVERAGES NOW
Average Monsoon Rainfall in Phoenix (1981-2010): 2.71" of rain
NEW Average Monsoon Rainfall in Phoenix (1991-2020): 2.43" of rain
Average Yearly Rainfall in Phoenix (1981-2010): 8:03" of rain
NEW Average Yearly Rainfall in Phoenix (1991-2020): 7.22" of rain
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