| Left: The Standard Rain Gage (SRG) at Hacienda Constanza, PR. |

|
NCDC 1971-2000
|
Jan
|
Feb
|
Mar
|
Apr
|
May
|
Jun
|
Jul
|
Aug
|
Sep
|
Oct
|
Nov
|
Dec
|
Annual
|
|
Average Rain (in.)
|
1.91
|
2.64
|
3.16
|
4.75
|
7.88
|
7.7
|
9.73
|
9.99
|
11
|
9.55
|
5.45
|
1.34
|
75.13
|
|
Days with Rain
|
2.4
|
2.4
|
2.9
|
5.3
|
8.4
|
7.1
|
8.7
|
9.3
|
9.6
|
9.2
|
4.9
|
1.7
|
71.9
|
| All Time Record | |
| Record High | N/A |
| Record Low | N/A |
| Wettest Year | 108.21" 2010 |
| Driest Year | 41.68" 2006 |
| Highest Daily Precip | 8.05" September 16th, 1975 |
|
NCDC 1981-2010
|
Jan
|
Feb
|
Mar
|
Apr
|
May
|
Jun
|
Jul
|
Aug
|
Sep
|
Oct
|
Nov
|
Dec
|
Annual
|
|
Average Rain (in.)
|
1.48
|
1.96 |
2.60 |
6.11
|
9.31 |
8.94 |
12.03 |
11.38 |
12.03
|
10.65 |
6.9 |
1.94 |
85.33 |
| All Time Record | |
| Record High | 95F August 10th, 1969 |
| Record Low | 63F January 24th, 1961 |
| Wettest Year | 167.56" 2007 |
| Driest Year | 44.57" 1991 |
| Highest Daily Precip | 30.63" August 22nd, 1960 |
|
NCDC 1981-2010
|
Jan
|
Feb
|
Mar
|
Apr
|
May
|
Jun
|
Jul
|
Aug
|
Sep
|
Oct
|
Nov
|
Dec
|
Annual
|
|
Average High (F)
|
85.8 |
86.3 | 86.9 |
87.7 | 88.9 | 90.7 | 90.6 |
90.5 |
90.7 |
90.2 | 88.5 | 86.5 | 88.6 |
|
Average Low (F)
|
65.4 | 65.3 |
66.1 | 68.1 | 66.9 | 70.5 |
71.5 | 71.4 |
71.4 | 71.3 | 70.0 | 67.7 | 69.1 |
|
Average Rain (in.)
|
1.13 | 2.03 | 2.72 |
4.87 | 6.76 |
5.17 | 6.63 |
8.31 | 8.72 |
7.2 | 3.9 | 2.01 | 59.45 |
| All Time Record | |
| Record High | 99F September 12th, 1924 |
| Record Low | 50F March 18th, 1917 |
| Wettest Year | 112.28" 1928 |
| Driest Year | 16.77" 1999 |
| Highest Daily Precip | 21.30" September 22nd, 1998 |
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