Weather History for San Juan, PR

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 96 °F 90 °F 81 °F
Mean Temperature 88 °F 85 °F 78 °F
Min Temperature 81 °F 78 °F 74 °F
Degree Days  
Heating Degree Days (base 65) 0 0 0 0
Cooling Degree Days (base 65) 23 20 13 589
Growing Degree Days (base 50) 38 34 28 1027
Dew Point  
Dew Point 78 °F 74 °F 66 °F
Precipitation  
Precipitation 2.88 in 0.28 in 0.00 in 7.61 in
Snowdepth - - - -
Wind  
Wind 30 mph 6 mph 0 mph
Gust Wind 38 mph 20 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.04 in 29.93 in 29.76 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 04, 2013 Rise Set
Actual Time 6:10 AM AST 6:35 PM AST
Civil Twilight 5:48 AM AST 6:57 PM AST
Nautical Twilight 5:22 AM AST 7:23 PM AST
Astronomical Twilight 4:56 AM AST 7:49 PM AST
Moon 5:18 AM AST (9/4) 5:57 PM AST (9/4)
Length of Visible Light 13h 09m
Length of Day
12h 25m
Waning Crescent, 1% of the Moon is Illuminated
Sep 4
Waning Crescent
Sep 5
New
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter

Weather History Calendar

Precipitation Actual month total 7.61 Normal Month Total: 5.77
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Rain
Actual:
89 | 80 0.01
Average:
89 | 78 0.20
Rain
Actual:
90 | 78 0.03
Average:
89 | 78 0.21
Rain
Actual:
89 | 76 0.26
Average:
89 | 78 0.20
Rain
Actual:
87 | 78 0.69
Average:
89 | 78 0.22
Rain
Actual:
81 | 75 0.84
Average:
89 | 78 0.22
Rain
Actual:
86 | 74 0.08
Average:
89 | 78 0.21
Rain
Actual:
86 | 78 0.01
Average:
89 | 78 0.22
Rain
Actual:
92 | 75 0.40
Average:
89 | 78 0.21
Partly Cloudy
Actual:
94 | 79 0.00
Average:
89 | 78 0.21
Scattered Clouds
Actual:
90 | 79 0.03
Average:
89 | 78 0.20
Rain
Actual:
88 | 78 0.09
Average:
89 | 78 0.20
Rain
Actual:
85 | 78 0.62
Average:
89 | 78 0.20
Partly Cloudy
Actual:
88 | 79 T
Average:
89 | 78 0.20
Thunderstorm
Actual:
87 | 75 2.88
Average:
89 | 78 0.19
Scattered Clouds
Actual:
90 | 78 0.00
Average:
89 | 78 0.18
Partly Cloudy
Actual:
91 | 80 0.01
Average:
89 | 78 0.19
Partly Cloudy
Actual:
90 | 80 T
Average:
89 | 78 0.18
Rain
Actual:
91 | 79 0.84
Average:
89 | 78 0.19
Thunderstorm
Actual:
95 | 79 0.09
Average:
89 | 78 0.18
Thunderstorm
Actual:
94 | 78 0.64
Average:
89 | 78 0.19
Partly Cloudy
Actual:
89 | 79 T
Average:
89 | 78 0.18
Scattered Clouds
Actual:
94 | 79 0.00
Average:
89 | 78 0.18
Scattered Clouds
Actual:
92 | 80 0.00
Average:
89 | 78 0.18
Scattered Clouds
Actual:
92 | 80 0.09
Average:
89 | 78 0.18
Scattered Clouds
Actual:
92 | 79 0.00
Average:
89 | 78 0.18
Scattered Clouds
Actual:
94 | 79 0.00
Average:
89 | 78 0.17
Scattered Clouds
Actual:
94 | 79 0.00
Average:
89 | 78 0.18
Scattered Clouds
Actual:
95 | 79 0.00
Average:
89 | 78 0.17
Scattered Clouds
Actual:
96 | 80 0.00
Average:
89 | 78 0.18
Scattered Clouds
Actual:
92 | 81 0.00
Average:
89 | 78 0.17
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 89 85 80 77 76 74 85 75 64 29.99 29.96 29.92 10 10 9 18 9 22 0.01 Rain
2 90 84 78 77 74 72 85 72 59 29.97 29.93 29.89 10 10 9 20 8 25 0.03 Rain
3 89 83 76 76 74 71 85 74 63 29.94 29.90 29.86 10 10 10 21 8 25 0.26 Rain
4 87 83 78 78 75 71 91 83 74 29.94 29.91 29.87 10 10 3 23 8 30 0.69 Rain
5 81 78 75 77 74 73 94 90 85 29.99 29.92 29.86 10 9 3 14 4 21 0.84 Rain
6 86 80 74 75 74 72 94 82 70 29.98 29.93 29.90 10 10 10 15 5 22 0.08 Rain
7 86 82 78 76 74 70 91 78 65 29.98 29.93 29.89 10 10 10 15 4 21 0.01 Rain
8 92 84 75 75 73 68 87 72 56 29.98 29.93 29.88 10 10 3 15 6 21 0.40 Rain
9 94 87 79 76 73 69 85 66 46 30.01 29.97 29.92 10 9 7 12 5 18 0.00  
10 90 85 79 75 73 72 79 69 59 30.04 30.00 29.95 10 10 10 22 8 25 0.03  
11 88 83 78 75 73 72 85 72 59 30.02 29.97 29.93 10 10 9 20 7 24 0.09 Rain
12 85 82 78 77 75 73 85 80 74 29.92 29.87 29.82 10 9 2 20 6 24 0.62 Rain
13 88 84 79 75 74 73 85 74 63 29.86 29.81 29.76 10 10 10 16 7 22 T  
14 87 81 75 77 74 72 91 81 70 29.97 29.89 29.82 10 8 0 17 4 20 2.88 Fog , Rain , Thunderstorm
15 90 84 78 77 75 74 91 78 64 30.01 29.96 29.92 10 10 10 20 7 23 0.00  
16 91 86 80 77 76 73 85 74 63 30.01 29.96 29.90 10 10 10 20 7 24 0.01  
17 90 85 80 77 76 75 85 75 64 29.98 29.93 29.89 10 10 10 20 7 23 T  
18 91 85 79 77 75 74 85 75 64 29.97 29.91 29.87 10 10 9 22 4 25 0.84 Rain
19 95 87 79 77 75 66 85 67 49 29.98 29.93 29.88 10 10 9 30 4 38 0.09 Rain , Thunderstorm
20 94 86 78 77 75 70 85 69 52 29.95 29.91 29.87 10 10 1 18 3 33 0.64 Rain , Thunderstorm
21 89 84 79 77 75 73 85 77 68 29.92 29.88 29.84 10 10 10 13 3 17 T  
22 94 87 79 76 73 68 85 66 46 29.99 29.93 29.88 10 10 9 14 4 17 0.00  
23 92 86 80 78 75 72 85 73 60 30.04 29.99 29.94 10 10 9 21 8 25 0.00  
24 92 86 80 76 74 69 85 67 49 30.01 29.97 29.91 10 10 10 21 5 25 0.09  
25 92 86 79 75 73 72 79 68 56 29.96 29.92 29.86 10 10 10 18 7 24 0.00  
26 94 87 79 74 72 69 79 63 46 29.96 29.91 29.84 10 10 10 13 4 20 0.00  
27 94 87 79 75 73 70 79 64 49 29.96 29.91 29.85 10 10 10 15 4 22 0.00  
28 95 87 79 74 72 68 79 63 46 29.99 29.94 29.88 10 10 10 14 5 21 0.00  
29 96 88 80 75 73 70 79 63 46 30.00 29.95 29.89 10 10 10 16 5 24 0.00  
30 92 87 81 77 74 70 85 72 59 30.04 29.99 29.94 10 10 10 18 7 23 0.00