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

Long Term Weather

Last Update 9/14/25 12:42 AM
Mean Temperature Yesterday 66.5 °F
True Mean Temperature Yesterday 65.5 °F
Mean Temperature last 7 days 68.1 °F
Mean Temperature this month 68.8 °F
Mean Temperature last 30 days 69.4 °F
Mean Temperature last month 69.7 °F
Mean Temperature last 60 days 68.5 °F
Mean Temperature last 90 days 68.0 °F

Maximum Temperature last 7 days 81.1 °F at: 9/8/25 3:10 PM
Minimum Temperature last 7 days 58.7 °F at: 9/8/25 6:30 AM
Maximum Temperature this month 90.3 °F at: 9/1/25 3:56 PM
Minimum Temperature this month 58.3 °F at: 9/3/25 7:01 AM
Maximum Temperature last 30 days 92.6 °F at: 8/31/25 1:31 PM
Minimum Temperature last 30 days 55.9 °F at: 8/18/25 6:48 AM
Maximum Temperature last month 92.6 °F at: 8/31/25 1:31 PM
Minimum Temperature last month 54.6 °F at: 8/4/25 6:30 AM
Maximum Temperature last 60 days 92.6 °F at: 8/31/25 1:31 PM
Minimum Temperature last 60 days 54.6 °F at: 8/4/25 6:30 AM
Maximum Temperature last 90 days 92.6 °F at: 8/31/25 1:31 PM
Minimum Temperature last 90 days 50.4 °F at: 6/20/25 6:00 AM

Total Rainfall since 10/1/24 12:00 AM 8.81 In
Total Rainfall last season¹ to date 14.79 In
Total Rainfall entire last season¹ 14.79 In
¹ Between October 1 and September 30


Growing degree days measures the time each day spent in the ideal plant growth range²
Growing degree days last 7 days 153.9 °F
Growing degree days this month 259.6 °F
Growing degree days last 30 days 605.9 °F
Growing degree days last month 625.7 °F
Growing degree days last 60 days 1180.9 °F
Growing degree days last 90 days 1730.3 °F
Growing degree days this season³ 3374.2 °F
Growing degree days last season³ to date 3842.7 °F
Growing degree days entire last season³ 4976.9 °F
² Between 50 °F and 86 °F (10 °C and 30 °C)
³ Between January 1 and December 31

Heating degree days estimates the heat required each day4
Heating degree days last 7 days 0.0 °F
Heating degree days this month 0.0 °F
Heating degree days last 30 days 0.0 °F
Heating degree days last month 0.0 °F
Heating degree days last 60 days 0.0 °F
Heating degree days last 90 days 11.8 °F
Heating degree days this season5 2146.5 °F
Heating degree days last season5 to date 1950.3 °F
Heating degree days entire last season5 1959.5 °F
4 Degree-hours below 65 °F
5 Between July 1 and June 30

Cooling degree days estimates the air conditioning required each day6
Cooling degree days last 7 days 24.5 °F
Cooling degree days this month 49.9 °F
Cooling degree days last 30 days 130.7 °F
Cooling degree days last month 140.9 °F
Cooling degree days last 60 days 211.4 °F
Cooling degree days last 90 days 286.0 °F
Cooling degree days this season7 355.3 °F
Cooling degree days last season7 to date 942.4 °F
Cooling degree days entire last season7 1065.2 °F
6 Degree-hours above 65 °F
7 Between January 1 and December 31

Chill hours measures the time each day spent below 45 °F
Chill hours yesterday 0.00 hrs
Chill hours this season8 1011.58 hrs
Chill hours last season8 to date 806.92 hrs
Chill hours entire last season8 806.92 hrs
Non-Freezing Chill hours this season8 1011.58 hrs
Non-Freezing Chill hours last season8 to date 806.92 hrs
Non-Freezing Chill hours entire last season8 806.92 hrs
8 Between July 1 and June 30

outdoor temperature for the last 366 days


Wind gust for the last 366 days


rainfall for the last 366 days


Growing Degree Days for the last 366 days


Heating Degree Days for the last 366 days


Cooling Degree Days for the last 366 days



OpenJ2300 (c) Dennis Ernst OpenJ2300