It is increasingly apparent that this spring will not be a repeat of the damp, cold abomination of Spring 2011. Today Seattle hit 68F and yesterday 70F....well above the normal high of 57F. In 2011, the first day to hit 70F was MAY 20th. In contrast to last month, April has brought us below-normal precipitation (only .31 inches so far, .63 inches below normal), and that should continue for at least the next week.
To further warm your heart, the Climate Prediction Center's 6-10 day forecasts suggest above normal temperatures for the western U.S. (see graphic) and the European Centre's
The eastern two-thirds of the U.S. has been extraordinarily warm, so warm that is overcame a cool West Coat to produce the warmest March on record for the lower 48 states (since 1895). But do not conclude this was due to global warming. The upper level wave patterns of the atmosphere were highly disturbed the last month, with some places much colder than normal (e.g, Alaska, West Coast) and others (eastern U.S.) much warmer. Here are the temperature anomalies for the last 30 days. You will notice how the temperatures anomalies vary from much warmer than normal over the central U.S. (reds) to colder than normal temperatures over Alaska and NE Asia (blues and purples)
At this point, there is no reason to expect this pattern is due to man-caused global warming.
And folks, it is surely too early to put you tomato plants outside!