Location: North Willow Glen, San Jose, Ca, USA
Altitude: 125 feet, Grid 37°18.544 , 121°54.521
Arduino based Weather Station

Temperature

Last Update 8/17/26 5:59 PM
Outdoor Temperature 77.3 °F (25.2 °C)
Relative Humidity % 62 %
Outdoor Temperature Difference from 24 Hours ago 1.2 °F
Dewpoint 63.3 °F
Heat Wind Humidity Index 76.9 °F

Maximum Temperature since midnight 81.3 °F at: 1:39 PM
Minimum Temperature since midnight 61.8 °F at: 6:00 AM
Provisional Mean Temperature for today 71.6 °F
Maximum Temperature in the last 24 hours 81.3 °F at: 1:39 PM today
Minimum Temperature in the last 24 hours 61.8 °F at: 6:00 AM today
Maximum Temperature yesterday 80.2 °F at: 2:53 PM
Minimum Temperature yesterday 61.5 °F at: 7:00 AM
Meteorlogical Mean Temperature Yesterday 70.3 °F
True Mean Temperature Yesterday 68.6 °F

Growing degree days Yesterday 20.8 °F
Cooling degree days Yesterday 5.3 °F
Maximum Temperature last 7 days 87.5 °F at: 8/12/26 2:08 PM
Minimum Temperature last 7 days 58.9 °F at: 8/11/26 6:30 AM
Cloudbase 3319 feet MSL
Zero °C Isotherm 11191 feet MSL
Relative Humidity Reading % 62 %
Dewpoint Reading 63.8 °F
Natural Wet Bulb temperature (estimated) 70.9 °F
Growing degree days mean temperature Yesterday 70.8 °F
Grow hours Today 17:23 hrs
Grow hours Yesterday 23:38 hrs
True Grow degree-days Today 14.08 °F degree-days
True Grow degree-days Yesterday 18.40 °F degree-days

Today is 1.2 °F warmer than yesterday at this time.

Charts updated at 8/17/26 5:48 PM
outdoor temperature day-to-day change

outdoor temperature 24 hour timescale

outdoor temperature 7 day timescale

outdoor humidity 24 hour timescale

outdoor humidity 7 day timescale

zero isotherm 24 hour timescale

zero isotherm 7 day timescale


OpenJ2300 (c) Dennis Ernst OpenJ2300
OpenJ2300 (c) David George OpenJ2300