We are fortunate to have two co-located but different temperature sensors observing the temperature at Astoria Airport. Yesterday (11 July 2017) was sunny in Astoria. Over the 7 hours from 10 AM to 5 PM the Astoria ASOS averaged +1.2 deg F higher than observations from the Astoria ESRL temperature sensor. But this morning around sunrise the warm bias had disappeared with the ASOS and ESRL sensors in close agreement.
Both ASOS (on left) and ESRL (on right) co-located sites are shown in this picture looking northwest.
Or cut and paste these coordinates into google maps for a view from above: