Washington barometric pressure forecast
Seattle area
Updated Nov 12, 2:20 AM PST · four times a day
Reviewed byHirotaka Maekawa, MD (headache specialist in Japan)See pressure changes for tomorrow and beyond in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Weather and pressure for the week
Today Thu 11/12 · Seattle
Watch for
Pressure drop
Cloudy
59/52°F7°F swing
Pressure CautionLow 998 hPa(29.47 inHg)
Drop
-14 hPa
-0.41 inHg
Humidity
78%
Chance of rain
4%
Highest pressure
1012 hPa
29.88 inHg
Pressure will be on the low side. If pressure changes tend to bring on your headaches, leave extra time in your plans, take frequent breaks, and stay hydrated. Take it especially easy when pressure falls 14 hPa (0.41 inHg) during the day.
Details (what to watch, 3-hour table)
- · Pressure on the low side (low of 998 hPa / 29.47 inHg). If pressure drops tend to bring on your headaches, take care when it falls 14 hPa (0.41 inHg) during the day.
| Time | Weather | Temp | Humidity | PressurehPa / inHg |
|---|---|---|---|---|
| 12 AM | Cloudy | 54°F | 74% | 101229.90 |
| 3 AM | Cloudy | 52°F | 74% | 101029.83 |
| 6 AM | Cloudy | 52°F | 77% | 101029.84 |
| 9 AM | Cloudy | 53°F | 83% | 100829.77 |
| 12 PM | Cloudy | 59°F | 76% | 100729.74 |
| 3 PM | Cloudy | 59°F | 79% | 100329.63 |
| 6 PM | Cloudy | 54°F | 79% | 100129.57 |
| 9 PM | Cloudy | 52°F | 79% | 100029.52 |
Seattle on Thu 11/12: Cloudy. High 59°F, low 52°F. Avg. humidity 78%. Chance of rain up to 4%. Pressure 998–1012 hPa (29.88 inHg) (outlook: Caution). Pressure may drop up to 14 hPa (0.41 inHg) during the day.
Tomorrow Fri 11/13 · Seattle
Watch for
Low pressure · High humidity · Rain
Rain
Pressure will be on the low side. If pressure changes tend to bring on your headaches, leave extra time in your plans, take frequent breaks, and stay hydrated.
Tomorrow: see the pressure trend in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Day after tomorrow Sat 11/14 · Seattle
Day after tomorrow: see the pressure trend in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Sun Sun 11/15 · SeattleGuide
Sun: see the pressure trend in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Mon Mon 11/16 · SeattleGuide
Mon: see the pressure trend in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Tue Tue 11/17 · SeattleGuide
Tue: see the pressure trend in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Wed Wed 11/18 · SeattleGuide
Wed: see the pressure trend in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Today across the US
Real-time headache map
Open the full real-time headache map
Now (7 AM ET)
US: not enough reports yet
Your location is used on your device only to find your state. It isn't sent or saved.
Nearby states (West)
Reviewed byHirotaka Maekawa, MD
Neurologist and headache specialist in Japan
Trained in the Department of Neurology at The University of Tokyo before focusing fully on headache care. Visiting Lecturer at Showa Medical University. Developer of the headache diary app Zutsu Note.
Headache diary app from Japan. "Zutsu" is Japanese for "headache."
- Pressure forecast for where you are
- Log your headaches, too
- Free to use
Frequently asked questions
What is the barometric pressure in Seattle today?
On Thursday, November 12, barometric pressure in Seattle, Washington is forecast to range from 998 hPa (29.47 inHg) to 1012 hPa (29.88 inHg). Zutsu Note rates today's pressure in Washington as Caution, based on the day's lowest pressure and the biggest change within 6 hours.
Will the barometric pressure change much in Seattle today?
Yes. Pressure in Seattle is forecast to fall by up to 6 hPa (0.18 inHg) within 6 hours today. A change this size is rated Caution on this page. Over the whole day, pressure falls by up to 14 hPa (0.41 inHg) and rises by up to 1 hPa (0.03 inHg).
Can a drop in barometric pressure cause a headache?
In some people, yes. In studies, about half of people with migraine say weather is one of their triggers. The exact mechanism isn't known. One leading idea is that the inner ear senses the change in pressure and the autonomic nervous system responds. Sensitivity varies a lot: the same weather change can bring on a headache in one person and not in another.
How can I tell if pressure changes trigger my headaches?
Keep a headache diary for 1 to 2 months and compare it with the pressure on each day. Zutsu Note, a free headache diary app built by a headache specialist, puts your logs and the pressure on the same chart automatically and shows the hourly pressure forecast for where you are, up to a week ahead. If your headaches keep coming back, get worse, or feel different from usual, talk to your doctor.
Learn more in our guide: Barometric pressure and headaches
The rating comes from the day's lowest pressure and the biggest change within 6 hours. It describes the weather, not your headache, and does not replace advice from your doctor. Forecast data: Open-Meteo.