HAPPY VALLEY, OREGON, WEATHER: JANUARY 2018

HAPPY VALLEY, OREGON, WEATHER: JANUARY 2018

TEMPERATURES January was quite mild, in fact, one of the warmest on record. We had no Minimum Temperatures that even reached freezing this month as the low was only 35.5°. Though 16 days did manage to fall to ≤40°, Mins stayed above 40° from the 9th-17th. On the Maximum side, one day did manage to just reach 60° and 16 total days were ≥50°. When looking at the first and second halves of the month, temperatures averaged almost exactly the same…

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Portland, Oregon, Airport: 2nd Warmest January Mean Temperature

Portland, Oregon, Airport: 2nd Warmest January Mean Temperature

With the end of January now upon us, it has certainly been a mild month in the Portland area. In fact, the Portland Airport (PDX) recorded its 2nd warmest January Mean Temperature since records began there in 1939, nearly 80 years ago! Only 4 days in the month averaged above the 30-year Normal, the greatest of these having a +3.0° departure. When combining the longer-term record of the official downtown station locations with a Period of Record (POR) back to…

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HAPPY VALLEY, OREGON, WEATHER: DECEMBER 2017

HAPPY VALLEY, OREGON, WEATHER: DECEMBER 2017

TEMPERATURES Average Temperatures were fairly steady throughout the month with a difference between the Maximum and Minimum of only 8.2°. The Average Max/Min/Mean Temperatures December 1st-15th vs. 16th-31st: 44.7°/36.6°/40.6° vs. 43.6°/35.2°/39.4°. There was no unusual warmth or cold – the month only featured 5 days reaching Maxima ≥50° and most of those just barely, while Minima reached ≤32° on 9 days, including 7 in a row from 20th-26th. The greatest diurnal temperature range was just 12.9° (12th, 19th, 27th), the…

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HAPPY VALLEY, OREGON, WEATHER: NOVEMBER 2017

HAPPY VALLEY, OREGON, WEATHER: NOVEMBER 2017

TEMPERATURES A steady monthly temperature pattern occurred. The Average Maximum/Minimum/Mean Temperatures for November 1st-15th vs. 16th-30th were almost exactly the same: 52.0°/42.4°/47.2° vs. 51.9°/42.4°/47.2°. The month’s warmest weather waited until Thanksgiving time when the Minimum Temperature only dropped to 54.9° on the 22nd, several degrees above the Normal Maximum Temperature for the date. This warmth was balanced just a few days prior when the Min. Temp. dropped to 33.8° on the 19th (the low for the month), the coolest temperature…

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HAPPY VALLEY, OREGON, WEATHER: OCTOBER 2017

HAPPY VALLEY, OREGON, WEATHER: OCTOBER 2017

TEMPERATURES It was a topsy-turvy month as the second half was actually warmer than the first half, not the usual steady decline as we move through Autumn. Splitting the month in two, the Average Max/Min/Mean Temperatures for Oct. 1st-15th vs. 16th-31st were thus: 61.7°/44.7°/53.2° vs. 61.9°/48.1°/55.0°. This was mainly due to a persistent end-of-month easterly wind that funneled in mild air through the Columbia River Gorge, especially elevating minimum temperatures. From the 22nd-29th, the Avg. Min. Temp. was 50.0°, well…

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Happy Valley, Oregon, Weather: September 2017

Happy Valley, Oregon, Weather: September 2017

TEMPERATURES: The normal steady monthly decline in temperatures occurred through this September. The Average Maximum/Minimum/Mean Temperatures for Sept 1st-15th vs. 16th-30th were thus: 82.9°/59.1°/71.0° vs. 68.1°/51.8°/60.0°. There were 5 days with Max. Temps. ≥90°, all occurring over the first 11 days of the month. A brief warm-up occurred at month’s end with 2 days reaching ≥80°, otherwise Maximum readings mostly stayed in the 50’s and 60’s over the latter half of the month. As far as Minimum Temperatures, there were…

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Happy Valley, Oregon, Weather – August 2017

Happy Valley, Oregon, Weather – August 2017

It was a very dry and record-warm August in Happy Valley. TEMPERATURES: August started out very hot with two consecutive days exceeding 100° (2nd & 3rd), with the month’s maximum on the 2nd hitting 101.3°. Though quite hot for this area, these maximum temperatures were likely somewhat suppressed due to rather thick wildfire smoke blowing down from British Columbia and northern Washington. There were seven total days reaching ≥90°, five of which were ≥95°, including the two that exceeded 100°….

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Portland Airport, Oregon – Hottest August

Portland Airport, Oregon – Hottest August

August started off with record heat on the 2nd and 3rd (103° and 105°, respectively) and, though no more Maximum Temperature records were set the rest of the month, the Mean Temperature was the warmest ever recorded for the Portland Airport (period of record back to 1940). The overall Average Maximum was 6.0° above normal, the second-highest August reading ever. Top-5 Highest August Average Maximum Temperatures: 88.1° (1967) 87.1° (2017) 86.2° (1986) 85.5° (1981) 85.0° (1972) Minimum Temperatures were not…

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The Solar Eclipse and the Temperature

The Solar Eclipse and the Temperature

Now that the great U.S. Solar Eclipse has passed through, it was interesting to see the temperature change during the event. Under fully clear skies, the eclipse began around 9:05 A.M. in Happy Valley, Oregon. The temperature on my Davis Vantage Pro2 (VP2) station stopped its typical morning rise and began leveling off at around 9:15 A.M., peaked at 66.5°F just before 10:00 A.M., then began dropping. Happy Valley saw 99.6% of totality, occurring around 10:18 A.M., and the temperature continued…

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