| Left: The Maximum Minimum Temperature Sensor (MMTS) and Standard Rain Gage (SRG) at Aibonito, PR. |

|
NCDC 1981-2010
|
Jan
|
Feb
|
Mar
|
Apr
|
May
|
Jun
|
Jul
|
Aug
|
Sep
|
Oct
|
Nov
|
Dec
|
Annual
|
|
Average High (F)
|
73.3
|
73.6
|
75.6
|
77.2
|
79.0
|
80.0
|
81.3
|
81.3
|
80.4
|
79.3
|
76.3
|
74.1
|
77.6
|
|
Average Low (F)
|
61.7
|
60.8
|
61.3
|
63.1
|
65.7
|
67.1
|
67.0
|
67.8
|
67.6
|
67.1
|
64.7
|
63.8
|
64.8
|
|
Average Rain (in.)
|
2.97
|
3.09
|
3.02
|
4.38
|
5.92
|
3.04
|
3.64
|
4.50
|
9.28
|
7.95
|
8.16
|
4.28
|
60.23
|
| All Time Record | |
| Record High | 98F September 29th, 1920 |
| Record Low | 40F March 9th, 1911 |
| Wettest Year | 108.20" 2011 |
| Driest Year | 24.52" 1967 |
| Highest Daily Precip. | 17.00" October 9th, 1970 |

|
NCDC 1971-2000
|
Jan
|
Feb
|
Mar
|
Apr
|
May
|
Jun
|
Jul
|
Aug
|
Sep
|
Oct
|
Nov
|
Dec
|
Annual
|
|
Average High (F)
|
76.4
|
77.1
|
79.3
|
80.7
|
81.4
|
83.1
|
83.5
|
84
|
82.5
|
81.5
|
79.2
|
76.6
|
80.4
|
|
Average Low (F)
|
61.6
|
60.7
|
61.2
|
62.8
|
64.7
|
66.3
|
67.5
|
67.6
|
66.7
|
66.2
|
65.5
|
63.1
|
64.4
|
|
Average Rain (in.)
|
2.85
|
2.05
|
2.46
|
4.14
|
4.92
|
2.91
|
2.55
|
4.31
|
6.73
|
7.09
|
5.25
|
3.16
|
48.42
|
|
Days with Rain
|
13.3
|
10.2
|
9.6
|
10.6
|
13
|
10.8
|
10.9
|
12.4
|
14
|
15.2
|
13.3
|
14
|
147.3
|
| All Time Record | |
| Record High | 93F August 16th, 1984 |
| Record Low | 50F January 13th, 1975 |
| Wettest Year | 111.36" 1970 |
| Driest Year | 29.71" 1977 |
| Highest Daily Precip. | 10.00" October 7th, 1985 |
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