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 12/15/25 7:45 AM
Mean Temperature Yesterday 45.4 °F
True Mean Temperature Yesterday 45.4 °F
Mean Temperature last 7 days 46.1 °F
Mean Temperature this month 47.1 °F
Mean Temperature last 30 days 49.3 °F
Mean Temperature last month 55.2 °F
Mean Temperature last 60 days 54.7 °F
Mean Temperature last 90 days 58.7 °F

Maximum Temperature last 7 days 57.1 °F at: 12/10/25 3:22 PM
Minimum Temperature last 7 days 36.4 °F at: 12/13/25 7:00 AM
Maximum Temperature this month 61.1 °F at: 12/3/25 2:35 PM
Minimum Temperature this month 36.4 °F at: 12/13/25 7:00 AM
Maximum Temperature last 30 days 62.7 °F at: 11/15/25 12:56 PM
Minimum Temperature last 30 days 36.4 °F at: 12/13/25 7:00 AM
Maximum Temperature last month 78.1 °F at: 11/10/25 2:14 PM
Minimum Temperature last month 39.4 °F at: 11/27/25 6:00 AM
Maximum Temperature last 60 days 78.2 °F at: 10/18/25 3:27 PM
Minimum Temperature last 60 days 36.4 °F at: 12/13/25 7:00 AM
Maximum Temperature last 90 days 92.0 °F at: 9/23/25 4:07 PM
Minimum Temperature last 90 days 36.4 °F at: 12/13/25 7:00 AM

Rainfall last 7 days 0.02 In
Rainfall last 30 days 1.78 In
Rainfall last 60 days 2.81 In
Rainfall last 90 days 4.04 In
Max one hour Rainfall at 10/13/25 6:00 PM 0.39 In
Max 24 hr Rainfall at 10/14/25 12:00 AM 1.11 In
Total Rainfall since 10/1/25 12:00 AM 3.88 In
Total Rainfall last season¹ to date 2.97 In
Total Rainfall entire last season¹ 8.93 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 19.1 °F
Growing degree days this month 39.8 °F
Growing degree days last 30 days 110.1 °F
Growing degree days last month 235.9 °F
Growing degree days last 60 days 450.1 °F
Growing degree days last 90 days 976.8 °F
Growing degree days this season³ 4390.6 °F
Growing degree days last season³ to date 4892.5 °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 149.1 °F
Heating degree days this month 250.5 °F
Heating degree days last 30 days 472.2 °F
Heating degree days last month 295.9 °F
Heating degree days last 60 days 616.1 °F
Heating degree days last 90 days 659.9 °F
Heating degree days this season5 659.9 °F
Heating degree days last season5 to date 654.8 °F
Heating degree days entire last season5 2146.5 °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 month 0.0 °F
Cooling degree days last 60 days 0.0 °F
Cooling degree days last 90 days 89.6 °F
Cooling degree days this season7 454.5 °F
Cooling degree days last season7 to date 1065.2 °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 12.61 hrs
Chill hours last 7 days 79.13 hrs
Chill hours last 30 days 175.53 hrs
Chill hours this season8 175.53 hrs
Days with chill hours this season8 22 days
Chill hours last season8 to date 200.32 hrs
Days with chill hours last season8 to date 30 days
Chill hours entire last season8 613.35 hrs
Days with chill hours entire last season8 92 days
Non-Freezing Chill hours this season8 174.80 hrs
Non-Freezing Chill hours last season8 to date 199.32 hrs
Non-Freezing Chill hours entire last season8 611.35 hrs
Freeze hours this season8 0.74 hrs
Days with freeze hours this season8 1 days
Freeze hours last season8 to date 1.00 hrs
Days with freeze hours last season8 to date 1 days
Freeze hours entire last season8 2.00 hrs
Days with freeze hours entire last season8 2 days
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


Chill Hours for the last 366 days

OpenJ2300 (c) Dennis Ernst OpenJ2300