Seattle humidity history

Hours of Daylight and Twilight in the Winter of in Seattle Dec Jan Feb 0 hr 24 hr 4 hr 20 hr 8 hr 16 hr 12 hr 12 hr 16 hr 8 hr 20 hr 4 hr 24 hr 0 hr Fall Spring Dec 21 8 hr, 26 min Dec 21 8 hr, 26 min night night day day Feb 28 11 hr, 2 min Feb 28 11 hr, 2 min.

The number of hours during which the Sun is visible black line. From bottom most yellow to top most gray , the color bands indicate: full daylight, twilight civil, nautical, and astronomical , and full night. The solar day over the course of the Winter of From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights civil, nautical, and astronomical , and night are indicated by the color bands from yellow to gray.

The time in which the moon is above the horizon light blue area , with new moons dark gray lines and full moons blue lines indicated. Humidity Comfort Levels in the Winter of in Seattle The hourly reported humidity comfort level, categorized by dew point. Wind Speed in the Winter of in Seattle The daily range of reported wind speeds gray bars , with maximum gust speeds red ticks. Hourly Wind Speed in the Winter of in Seattle The hourly reported wind speed, color coded into bands according to the Beaufort scale.

Hourly Wind Direction in in Seattle The hourly reported wind direction, color coded by compass point. Atmospheric Pressure in the Winter of in Seattle The daily range of atmospheric pressure gray bars , as measured by the altimeter setting reported in e.

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Sat, Dec 5. Sun, Dec 6. Mon, Dec 7. Tue, Dec 8. Wed, Dec 9. Thu, Dec Fri, Dec Sat, Dec Sun, Dec Mon, Dec Tue, Dec Wed, Dec Across the east, the chance for strong to severe thunderstorms later today as low pressure tracks eastward.

This system could redevelop into a coastal storm for the mid-Atlantic and Northeast corridors into Tuesday. Main Tabs Western U. Please Contact Us. Please try another search. Multiple locations were found. Please select one of the following:. Location Help.

Climate and Past Weather. Heat Index Temperature vs. Humidity How to read the chart: find the temperature on the left hand side, then move to the right until you find the column for the approximate relative humidity. Or, if you know the temperature and the dewpoint, figure out the heat index and relative humidity RH using this calculator.

Follow us on Twitter. Follow us on Facebook. Follow us on YouTube. Disclaimer Information Quality Help Glossary. Air Temperature. Possible heat disorders for people in higher risk groups. Redness and pain. In severe cases swelling of skin, blisters, fever, and headaches.

Ointments for mild cases if blisters appear and do not break. If breaking occurs, apply dry sterile dressings. Serious, extensive cases should be seen by a physician. Painful spasms usually in muscles of the legs and abdomen possible. Heavy sweating.

Firm presure on the cramping muscles, or gentle massaging to relieve the spasm. Give sips of water. If nausea occurs, discontinue use. Heavy sweating, weakness, skin cold, pale and clammy. Pulse thready. Normal temperature possible.