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 3/13/26 12:12 AM
Mean Temperature Yesterday 62.1 °F
True Mean Temperature Yesterday 61.3 °F
Mean Temperature last 7 days 60.0 °F
Mean Temperature this month 59.1 °F
Mean Temperature last 30 days 56.4 °F
Mean Temperature last month 54.6 °F
Mean Temperature last 60 days 54.3 °F
Mean Temperature last 90 days 53.4 °F

Maximum Temperature last 7 days 77.2 °F at: 3/12/26 4:06 PM
Minimum Temperature last 7 days 43.3 °F at: 3/11/26 7:41 AM
Maximum Temperature this month 77.2 °F at: 3/12/26 4:06 PM
Minimum Temperature this month 43.3 °F at: 3/11/26 7:41 AM
Maximum Temperature last 30 days 80.0 °F at: 2/28/26 12:45 PM
Minimum Temperature last 30 days 36.9 °F at: 2/21/26 1:32 AM
Maximum Temperature last month 80.0 °F at: 2/28/26 12:45 PM
Minimum Temperature last month 36.9 °F at: 2/21/26 1:32 AM
Maximum Temperature last 60 days 80.0 °F at: 2/28/26 12:45 PM
Minimum Temperature last 60 days 35.3 °F at: 1/13/26 7:40 AM
Maximum Temperature last 90 days 80.0 °F at: 2/28/26 12:45 PM
Minimum Temperature last 90 days 34.6 °F at: 1/10/26 7:30 AM

Rainfall last 30 days 2.68 In
Rainfall last 60 days 2.76 In
Rainfall last 90 days 5.64 In
Max one hour Rainfall at 2/16/26 8:00 AM 0.19 In
Max 24 hr Rainfall at 2/16/26 9:00 PM 1.29 In
Total Rainfall since 10/1/25 12:00 AM 9.52 In
Total Rainfall last season¹ to date 7.51 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 85.8 °F
Growing degree days this month 124.8 °F
Growing degree days last 30 days 251.8 °F
Growing degree days last month 234.8 °F
Growing degree days last 60 days 462.2 °F
Growing degree days last 90 days 611.4 °F
Growing degree days this season³ 508.6 °F
Growing degree days last season³ to date 451.4 °F
Growing degree days entire last season³ 4490.7 °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 44.5 °F
Heating degree days this month 71.3 °F
Heating degree days last 30 days 261.0 °F
Heating degree days last month 330.1 °F
Heating degree days last 60 days 646.5 °F
Heating degree days last 90 days 1042.4 °F
Heating degree days this season5 1662.2 °F
Heating degree days last season5 to date 1772.9 °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 30 days 1.6 °F
Cooling degree days last month 1.6 °F
Cooling degree days last 60 days 1.6 °F
Cooling degree days last 90 days 1.6 °F
Cooling degree days this season7 1.6 °F
Cooling degree days last season7 to date 0.0 °F
Cooling degree days entire last season7 454.5 °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 last 7 days 2.29 hrs
Chill hours last 30 days 50.61 hrs
Chill hours last 60 days 211.87 hrs
Chill hours last 90 days 338.94 hrs
Chill hours this season8 488.75 hrs
Days with chill hours this season8 67 days
Chill hours last season8 to date 594.52 hrs
Days with chill hours last season8 to date 87 days
Chill hours entire last season8 613.35 hrs
Days with chill hours entire last season8 92 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