May 15th, 2026 Timelapse
On May 15th, the day began under a veil of thick cloud cover, with an average cloudiness of 88.5 percent. Winds at the surface were gentle, averaging about 3.9 mph, while winds at 100 meters elevated significantly to an average of 6.9 mph. This difference in wind speed contributed to a gentle but noticeable movement of clouds across the sky. Low clouds comprised 11.8 percent of the total cloud cover, while mid-level clouds made up 52.5 percent, and high clouds contributed a substantial 84.3 percent. The temperature started at a cool 45.6°F, with light precipitation amounting to 0.02 inches, hinting at the moist conditions. The wind dynamics indicated a slightly turbulent atmosphere, as the surface winds were outpaced by the stronger winds aloft, leading to potential shear effects that could make for an interesting cloud interplay.
As the day progressed into midday, conditions evolved significantly, reaching a full 100 percent cloud cover. Surface winds increased to an average of 6.1 mph, while the winds at 100 meters further strengthened to an average of 9.4 mph. The clouds became more pronounced, with low clouds swelling to 64 percent, while mid-level clouds completely dominated the sky at 100 percent coverage. High clouds diminished to 37.8 percent. This layering of clouds, coupled with the elevated wind speeds, created a dramatic scene with fast-moving mid-level clouds racing across the sky. The conflict between the slower surface winds and the faster winds aloft resulted in turbulence that could be seen in the shifting patterns of the cloud formations. The midday temperature rose slightly to an average of 48.8°F, with precipitation increasing to 0.13 inches, adding to the day’s overall sense of moisture.
By evening, the weather began to transition, though clouds remained a defining feature of the sky, with average cloud cover at 76.2 percent. Surface winds picked up further, averaging 7.5 mph, and winds at 100 meters increased to 13.0 mph, showcasing a trend of strengthening winds throughout the day. Low clouds settled at 39.3 percent, and mid-level clouds decreased to 60.2 percent, while high clouds were notably sparse at just 8.8 percent. The combination of these factors led to a more layered appearance in the sky, as the lower clouds moved at a much slower pace compared to those aloft, creating a striking visual contrast. The temperature nudged up to an average of 49.0°F, and total precipitation reached 0.20 inches by the end of the day, culminating in a total of 0.39 inches for the entire daylight period. The interplay of winds and cloud layers throughout the day showcased the dynamic nature of the Northwest's weather, leaving a canvas of shifting clouds as the sun began to set.
May 15th, 2026 Timeline
Screenshots with weather data (wind layers, clouds, precipitation)
Weather Info for May 15th, 2026
Sunset: 8:37 PM