San Jose Weather Station*
Substation of the National Weather Service
Office of Emergency Services
DECEMBER 1999          
Date Maximum Temperature Minimum Temperature Mean Temperature Heating Degree Days (Base 65) Cooling Degree Days (Base 65) Precipitation
(4 p.m. - 4 p.m.)
1 60 46 53.0 12 0 0
2 60 44 52.0 13 0 0.02
3 60 43 51.5 14 0 0
4 60 37 48.5 17 0 0
5 60 37 48.5 17 0 0
6 57 38 47.5 18 0 0
7 57 46 51.5 14 0 0
8 57 37 47.0 18 0 0
9 57 47 52.0 13 0 0.28
10 54 42 48.0 17 0 0.16
11 60 40 50.0 15 0 0
12 60 40 50.0 15 0 0
13 54 40 47.0 18 0 0.02
14 57 37 47.0 18 0 0
15 56 36 46.0 19 0 0
16 57 35 46.0 19 0 0
17 63 35 49.0 16 0 0
18 62 40 51.0 14 0 0
19 70 37 53.5 12 0 0
20 72 50 61.0 4 0 0
21 70 43 56.5 9 0 0
22 67 41 54.0 11 0 0
23 66 39 52.5 13 0 0
24 62 38 50.0 15 0 0
25 63 35 49.0 16 0 0
26 62 36 49.0 16 0 0
27 65 35 50.0 15 0 0
28 66 37 51.5 14 0 0
29 57 40 48.5 17 0 0
30 63 38 50.5 15 0 0
31 53 38 45.5 20 0 0
Avg 60.9 39.6 50.2 458 0 0.48
Normal 57.2 40.7 49.1 493 0 1.99
Dep. Fm Normal 3.7 -1.1 1.1 -35 0 -1.51
             
T indicates Trace      

* Based on Preliminary Data