On March 5th and 6th there is the Northwest Weather Workshop, the annual gathering for local folks interested in Northwest weather. There is always a wide range of interesting weather talks and roughly 70% are quite accessible to laymen. Everyone from local TV weather and university types, to NWS forecasters, private sector meteorologists, and weather enthusiasts. The meeting takes place in north Seattle at the NOAA Sand Point facility.
The meeting is open to everyone, but you should register if you are going. There is also a Friday night banquet, with the speaker this year talking about weather and wine growing. Generally, the meeting starts at 1 PM Friday and goes to about 4 PM on Saturday. The agenda does change a bit in time (generally add a few talks). In fact, if there is anyone interested in giving a talk on agriculture/gardening and weather, send me an email.
For more information about the meeting and registering, check the official website: