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 3/13/26 6:11 PM
Outdoor Temperature 70.2 °F (21.2 °C)
Relative Humidity % 54 %
Outdoor Temperature Difference from 24 Hours ago -4.5 °F
Outdoor Temperature Change per Hour -1.8 °F/Hr
Dewpoint 52.9 °F
Heat Wind Humidity Index 67.6 °F

Maximum Temperature since midnight 72.4 °F at: 3:38 PM
Minimum Temperature since midnight 44.8 °F at: 7:30 AM
Maximum Temperature in the last 24 hours 74.7 °F at: 6:12 PM yesterday
Minimum Temperature in the last 24 hours 44.8 °F at: 7:30 AM today
Maximum Temperature yesterday 77.2 °F at: 4:06 PM
Minimum Temperature yesterday 46.9 °F at: 6:30 AM
Meteorlogical Mean Temperature Yesterday 62.1 °F
True Mean Temperature Yesterday 61.3 °F

Growing degree days Yesterday 13.6 °F
Chill hours Today 0:00 hrs
Heating degree days Yesterday 2.9 °F
Maximum Temperature last 7 days 77.2 °F at: 4:06 PM yesterday
Minimum Temperature last 7 days 43.3 °F at: 3/11/26 7:41 AM
Cloudbase 4090 feet MSL
Zero °C Isotherm 8823 feet MSL
Relative Humidity Reading % 54 %
Dewpoint Reading 54.1 °F
Natural Wet Bulb temperature (estimated) 63.6 °F
Growing degree days mean temperature Yesterday 63.6 °F
Grow hours Today 11:47 hrs
Grow hours Yesterday 18:10 hrs
True Grow degree-days Today 6.49 °F degree-days
True Grow degree-days Yesterday 11.83 °F degree-days

Today is 4.5 °F cooler than yesterday at this time.

Charts updated at 3/13/26 6:00 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