Happy Valley, Oregon Weather

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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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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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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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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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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TEMPERATURES November 2020 Mean Temperatures averaged just a bit below Normal in the area, less than a one-degree departure. The first few days were the warmest of the month, with Maximum Temperatures reaching the upper 50s to mid-60s over the first 5 days (the highest being the 65.4° on the 4th), then declining through the remainder of the month. In fact, from the 6th-30th, 20 of these days remained ≤50°, including the final 13 consecutive days. Minimum Temperatures varied more…

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TEMPERATURES October 2020 had a warm start, then gradually cooled as the month progressed. Six of the first nine days saw temperatures reaching ≥70°, the 9th seeing the final such reading of the month with 70.6°; Maximum Temperatures reached no higher than the mid-60s through the remainder of the month. The highest daily Maximum Temperature for the month was 78.6° on the 2nd, the lowest Maximum being just 44.3° on the 25th during the period in which 15 of the…

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TEMPERATURES August Average Temperatures were about 1.5° above the Normal in the area for both the Maximum and Minimum Temperatures. As has been the case this summer, there were no extended periods of hot weather as just 3 days even made it to ≥90° this month, the highest being the 95.8° on the 15th, the second-warmest reading of the year, exceeded only by the 96.0° on July 27th. These 3 days of ≥90° brought the yearly total to 10 (including…

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TEMPERATURES Though July 2020 averaged just a bit above Normal, the month began quite cool with a Maximum of only 63.1° on the 1st, even without the normally suppressive benefit of clouds and rain. The Average Maximum covering the 1st-9th was 71.6° as not a single day reached above 77°. The 80° threshold was finally breached on the 10th and 80s were a regular occurrence thereafter. The first 90° reading came on the 20th (91.0°), with a monthly total of…

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