WeatherWatcher: August 20 - 26 - 80º but fall is looming

Week number 4 of summer

For the week ahead:

Fall is looming, even though we've finally managed to consistently break 80ºF for our daily high temperatures this week, a shift in the weather pattern is at our door step. 

Starting around Sunday evening we will likely shift into a pattern where a bunch of weakened storm fronts will be pushing through the area, bringing us many cloudy mornings, more marine airflow once again, and occasional showers. This pattern may hold well into September with an early start to fall. 

I believe there is a chance we might get a late dosing of summer like weather in the later end of September, which is typical following a La Nina pattern, or double dip La Nina.

Highlights:

• Rain showers on Monday. Tuesday had a morning shower that was just enough to tip the rain gauge bucket from the precipitation Monday to count 0.04 inches of rain. We made it 3 weeks without any rain!
• Wednesday evening some unstable air moved in and generated some more hit and miss showers in the area, none were heavy enough to generate any measurable precipitation.
• Five out of Seven days broke 80ºF for a high temperature. Saturday: 82.0ºF, Sunday 82.6ºF, Tuesday 82.5ºF, Thursday 80.4ºF, and Friday with 81.3ºF.
• Shoreline and Lake Forest Park still have not broken the 85ºF mark for a high temperature.

The extremes:

High temperature: 82.6ºF (Sunday)

Low temperature: 55.0ºF (Saturday)

High humidity: 100%

Low humidity: 20% (Sunday)

Barometer high: 29.619 inHg

Barometer low: 29.382 inHg

Total rainfall: 0.04 inches (Monday-Tuesday)

Barometer shift: 0.237 inHg

Averages:

Warmest day: 68.9ºF (Sunday)

Coldest day: 63.7ºF (Monday)

Average temperature: 66.6ºF

Average humidity: 68%

Warmest and coldest days are based on average temperature of the entire day, starting at midnight. All other averages are based on the whole week. All weather data unless otherwise noted is sourced from Carl's Shoreline Weather Station.