Category Archives: Washington

Washington September 2017 climate summary

Here is the September 2017 climate summary for 24 sites across Washington.  The month averaged +2.2 F above normal across Washington with Yakima again being a warm outlier.  15 of 24 sites reported below normal precipitation.         REGION: … Continue reading

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Olympia +0.08 F Warming over past 25 Years

After a warm dry summer this is a good time to take a look at the global warming scorecard for our region. Using Olympia Airport as perhaps our best measure of temperature in the Puget Sound region, we find the … Continue reading

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Climate of Olympia WA: number of hot days

For Olympia Airport, (1941-2015), I have compiled the number of “hot” days (>= 89 F) per decade.  The threshold temperature for a hot day was set to make an annual mean frequency of about 7 days per year. 1940s*   … Continue reading

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Seattle Precipitation – Winter 2015-16

Seattle Sand Point (SEW) has seen measurable precipitation on each of the past 14 days (26 Feb – 10 Mar 2016).  This month, with 3.20 inches so far, is likely to be the 6th consecutive month with above normal precipitation … Continue reading

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From 106 F to 28 F in eastern Washington in 5 days

Eastern Washington has been a land of temperature extremes this past week.  Earlier this week the temperature reached 106 F at Benton City on 8 June 2015 and several sites reached 105 F, including the Hanford climate station.  Now just … Continue reading

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Whidbey Island Naval Air Station warm anomaly

In western Washington we have an ASOS site at Whidbey Island Naval Air Station (KNUW) whose temperature often runs considerably higher than surrounding sites. For example, the high temperature today about 2 miles south of KNUW ASOS on Whidbey Island was 52 … Continue reading

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Record warm February 2015 at Hanford WA

The Hanford climate station in eastern Washington reports February 2015 to have been their warmest February in the 71 year historical record from 1945 – 2015.  The mean of 45.3 F exceeded the previous record in February 1958 by +0.8 … Continue reading

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