San Jose Weather Station
Substation of the National Weather Service
Office of Emergency Services
Monthly Meteorological Summary
September 1998
  Temperatures (F)   Moisture Wind    
Date Maximum Minimum Range Mean Normal Mean Departure from Normal Heating Degree Days (Base 65o) Cooling Degree Days (Base 65o) Atmospheric Pressure (inches)* Dewpoint* Relative Humidity* Precipitation (Midnight - Midnight) Miles/Direction* (FAA Tower Recording)    
1 88 60 28 74 68 6 0 9 29.73 52 29 0.00 8 NNW   74
2 96 60 36 78 68 10 0 13 29.63 52 23 0.00 6 NNW   78
3 94 62 32 78 68 10 0 13 29.67 56 28 0.00 7 NNW   78
4 90 66 24 78 68 10 0 13 29.78 54 30 0.00 11 SW   78
5 87 65 22 76 68 8 0 11 29.82 66 53 0.00 13 WNW   76
6 94 72 22 83 68 15 0 18 29.88 64 48 0.00 Calm   83
7 96 69 27 83 68 15 0 18 29.80 64 43 0.00 12 NNW   83
8 83 63 20 73 68 5 0 8 29.73 46 36 0.03 16 NNW   73
9 70 59 11 65 68 -3 0 0 29.89 42 44 0.00 11 W   65
10 81 53 28 67 68 -1 0 2 29.84 54 41 T 12 NW   67
11 88 58 30 73 68 5 0 8 29.75 52 30 0.00 10 WNW   73
12 89 63 26 76 68 8 0 11 29.98 55 32 0.00 6 NW   76
13 92 64 28 78 68 10 0 13 29.71 52 28 0.00 11 WNW   78
14 83 62 21 73 68 5 0 8 29.79 63 54 0.00 10 WNW   73
15 80 61 19 71 68 3 0 6 29.87 63 66 0.00 11 NW   71
16 80 60 20 70 68 2 0 5 29.86 59 50 0.00 8 NW   70
17 79 57 22 68 68 0 0 3 29.96 54 47 0.00 15 WNW   68
18 77 59 18 68 68 0 0 3 30.02 54 47 0.00 14 NW   68
19 84 55 29 70 68 2 0 5 29.77 57 42 0.00 11 NW   70
20 78 55 23 67 68 -1 0 2 29.76 57 56 0.00 12 NW   67
21 76 55 21 66 68 -2 0 1 29.84 54 50 0.00 5 Variable   66
22 76 56 20 66 68 -2 0 1 29.92 50 44 0.00 5 SSW   66
23 76 56 20 66 68 -2 0 1 29.95 52 47 0.00 4 Variable   66
24 71 56 15 64 68 -4 1 0 29.94 54 59 0.00 11 NW   64
25 72 58 14 65 68 -3 0 0 29.91 54 58 0.00 5 Variable   65
26 64 59 5 62 68 -6 3 0 29.83 54 72 0.02 Calm   62
27 65 52 13 59 68 -9 6 0 29.99 52 65 0.00 5 NNE   59
28 75 59 16 67 67 0 0 2 29.94 50 44 0.00 7 W   67
29 69 56 13 63 67 -4 2 0 29.91 55 63 0.00 8 WNW   63
30 73 58 15 66 67 -1 0 1 29.92 55 63 0.00 13 NW   66
                               
(SUM)AVE 81 60 21 70 68 3 (12) (175) 29.85 55 46 (0.05) ---    
NORMAL 81 56 25 68 68 --- (19) (115) 29.87 --- 51 (0.24) ---     
T = Trace     + = Other Dates     (  ) = Sum Total      *  =  Data Taken at Approximately 4:00 p.m. DST