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Author: Jeff Taylor

Downtown Portland, Oregon Sets #2 Wettest September Day

Downtown Portland, Oregon Sets #2 Wettest September Day

On 9/27/2021, the official Downtown Portland weather station recorded a record daily rainfall total of 1.79″. This amount was also the second highest September calendar-day total dating back to 1872, a period of 150 years! This amount is second only to the 2.41″ that fell on 9/17/1969. The nearby Portland International Airport (PDX) only recorded 0.87″, which did not even set a daily record, with a period of record back to 1940. The Portland Weather Forecast Office, with data records…

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HAPPY VALLEY, OREGON WEATHER: AUGUST 2021

HAPPY VALLEY, OREGON WEATHER: AUGUST 2021

TEMPERATURES Overall, August 2021 Average Temperatures were 1°-2° above the Normal in the area for both the Maximum and Minimum Temperatures. The most extended period of hot weather occurred from 11th-15th as each day made it to ≥90°, the highest being the 99.6° on the 12th, the 4th day this year to reach 100° (when rounding), including the 3 days in June. The 7 total days of ≥90° this month brought the yearly total to 16 (including 7 in June, and…

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HAPPY VALLEY, OREGON WEATHER: JULY 2021

HAPPY VALLEY, OREGON WEATHER: JULY 2021

TEMPERATURES This was one of the warmest Julys on record, though there wasn’t any extreme heat, only consistently mild temperatures. The Maximum Temperature didn’t even reach 90° until the 28th (90.9°), with just one other day reaching that level when it hit 95.1° the following day, also the day with the Maximum Heat Index of 96°. The 30th of the month was predicted to reach near 100° but cloud cover suppressed the temperature and it only reached 85.7°. On the…

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HAPPY VALLEY, OREGON WEATHER: JUNE 2021

HAPPY VALLEY, OREGON WEATHER: JUNE 2021

TEMPERATURES June Temperatures were, simply, unprecedented. Never before in the Pacific Northwest’s official weather records have temperatures vaulted to the extremes as they did in late June, 2021. Over the 3-day period 26th-28th, all-time records for any day of the year were established on each of those successive days for most Willamette Valley locations as Temperatures reached well-over 100° each of these 3 days, maxing out at 107° at this Happy Valley location but soaring to 116° at the Portland…

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HAPPY VALLEY, OREGON WEATHER: MAY 2021

HAPPY VALLEY, OREGON WEATHER: MAY 2021

TEMPERATURES May 2021 averaged very close to normal for this area but the warmest Maximum Temperatures waited until the final 3 days when the 80s were reached each day, bringing the monthly Average Maximum Temperature from just below normal to a bit above normal. Until these final 3 days, just one day in the month had reached 80° (81.3° on the 16th), this value occurring during the month’s longest stretch of warm weather when Maximums remained ≥70° from the 11th-16th….

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HAPPY VALLEY, OREGON WEATHER: APRIL 2021

HAPPY VALLEY, OREGON WEATHER: APRIL 2021

TEMPERATURES April 2021 had larger-than-usual daily temperature variations due to the many days of clear, dry weather, with an Average Monthly Diurnal Range of 23.5°. The Maximum Daily Diurnal Range was 31.7° on the 15th (76.2°/44.5°) and the 21st (75.9°/44.2°), the least was just 8.0° on the 24th (53.9°/45.9°), the day with the greatest rainfall of the month. Overall, Maximum Temperatures averaged more than +5.0° departures while Minimums averaged near-Normal departures (per the official Portland stations). April began quite cool…

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HAPPY VALLEY, OREGON WEATHER: MARCH 2021

HAPPY VALLEY, OREGON WEATHER: MARCH 2021

TEMPERATURES March 2021 averaged slightly below the Normal for both Maximum and Minimum Temperatures, though the first 4 days were well-above Normal as Maxima averaged a nearly +15° departure but quickly cooled to the upper-40s to low-50s from the 5th-10th. The month’s coolest Maximum Temperature was 45.1° on the 15th, the warmest waiting until March’s final day when it jumped to 66.9°, the warmest Max. Temperature since 70.6° on 10/9/2020.  After a Minimum Temperature of 41.4° on the 1st of…

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HAPPY VALLEY, OREGON WEATHER: FEBRUARY 2021

HAPPY VALLEY, OREGON WEATHER: FEBRUARY 2021

MONTHLY REVIEW The big story for February 2021 was the historic snow and ice storm that wreaked havoc on the area. With the Portland Metro being right on the snow/ice boundary, the area was subjected to several types of frozen precipitation depending on the geographic location and day. A very strong High Pressure system centered north of the area and Low Pressure to the south caused very strong east winds to blow through the Columbia River Gorge, resulting in much…

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HAPPY VALLEY, OREGON WEATHER: JANUARY 2021

HAPPY VALLEY, OREGON WEATHER: JANUARY 2021

TEMPERATURES January 2021’s area Average Temperatures were from 2° to 3.5° above Normal, with the greater departures being with Average Minimum Temperatures. Except for a brief warm-up from the 12th-14th and a cool-down from the 25th-27th, Maximum Temperatures didn’t vary much at all the entire month with just 5 days managing to surpass the 50° mark and only 4 other days falling to <45° (consecutive from the 24th-27th), indicative of a damp month. The month’s extreme Maximum hit 58.2° on…

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HAPPY VALLEY, OREGON WEATHER: DECEMBER 2020

HAPPY VALLEY, OREGON WEATHER: DECEMBER 2020

TEMPERATURES It was a very mild December as Average Temperatures were about 3° above the monthly Normal. Maximum Temperatures remained in the upper 40s to low 50s through the first 9 days, dropping to the low 40s from the 10th-13th, then rising again, even reaching 60.5° on the 21st for the warmest reading of the month. From the 22nd-31st, temperatures ranged from 49.4° to 39.2°, the latter reading being the lowest Maximum of the month on the 29th. As far…

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