WeatherWatcher: July 9-15, cold, grey, with occasional sprinkles - looking ahead, no end in sight

Monday, July 18, 2011

Last week was cold, grey, with occasional sprinkles which hardly reached the level to be called "rain." No highs reached into the 80’s last week. 

So far we are only at three days this year where we hit the 80ºF mark, and all happened the week of July 2 – 8, 2011.

The extremes:
High temperature: 75.7ºF (Wednesday)
Low temperature: 47.3ºF (Saturday)
High humidity: 100%
Low humidity: 21% (Saturday)
Barometer high: 29.589 inHg
Barometer low: 29.353 inHg
Total rainfall: 0.04 inches (Tuesday)
Barometer shift: 0.236 inHg

Warmest day: 63.0ºF (Friday)
Coldest day: 58.9ºF (Thursday)
Average temperature: 60.6ºF
Average humidity: 71%

The week ahead:
The Marine air flow that has been persistent almost all of June and so far most of July will continue with no real end in sight it seems. This upcoming weekend might clear out and warm into the mid 70’s. So, with the exception of the occasional sun break, we will continue to have mostly cloudy conditions, with some sprinkles or rain, and a day or two of sun. Temperatures will probably continue to average right around the 60ºF mark, (night time temps are included in the averages.)

We are the only area in the lower 48 states that has remained in the 60’s and 70’s. I took a peak at the national high temperatures for today (Monday July 18th) and the only other locations in the mid 70’s are a couple of rare spots on the California coast.

Surface ocean temperatures off the west coast remain in the 50’s in most spots, with a couple spots around 60ºF. Usually this time of year they are closer to 65ºF. I believe this is why we are seeing these colder than normal temperatures, and with warmer air in the interior US, why we may be having these longer lasting marine air flows off the Pacific. I will do more studying on these factors and write a seasonal report within the next couple weeks.

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 unless otherwise noted is sourced from Carl’s Shoreline Weather Station.


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