I’m starting to get interested in weather and temperature patterns in my area, SF Bay Area zone 9b. I often check the weather.gov site. I’m fortunate that I’m very near Stanford which I think collects data. Recently I saw this on the chart where the dew point dips way below freezing but the ambient temperature is around 40°F. I read somewhere this could lead to black frost where plants turn black and rot away within a short time. If temps are 40ish and dew point is way under freezing, should I start covering plants to protect tender ones from dying? Which number should I pay attention to? Also looking for recommendations for an outdoor thermometer that is accurate. I was gifted a Netatmo (newfangled digital outdoor thermometer). It’s reading is not lining up with my observations. (Eg. At 8am after sun goes up, temp still remains at 33°F) Does anyone know how accurate this is? Much thanks, -Elaine Jek. -------------- next part -------------- A non-text attachment was scrubbed... Name: image1.jpeg Type: image/jpeg Size: 254243 bytes Desc: not available URL: <http://lists.pacificbulbsociety.net/pipermail/pbs/…> -------------- next part -------------- _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net http://lists.pacificbulbsociety.net/cgi-bin/… Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net>
