| Month | Average (°F) | Record (°F) | Average (inches) | |||
|---|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | Snow ❄️ | |
| January | 83.4 | 71.9 | 92 | 61 | 4.1 | 0.0 |
| February | 83.9 | 71.7 | 96 | 62 | 2.6 | 0.0 |
| March | 84.8 | 72.4 | 96 | 60 | 2.2 | 0.0 |
| April | 86.3 | 74.0 | 97 | 64 | 4.6 | 0.0 |
| May | 87.5 | 75.7 | 96 | 66 | 5.5 | 0.0 |
| June | 89.1 | 77.3 | 97 | 69 | 4.7 | 0.0 |
| July | 88.8 | 77.6 | 95 | 69 | 6.0 | 0.0 |
| August | 89.2 | 77.8 | 97 | 70 | 6.3 | 0.0 |
| September | 89.3 | 77.5 | 97 | 69 | 6.5 | 0.0 |
| October | 88.6 | 76.8 | 98 | 67 | 5.1 | 0.0 |
| November | 86.2 | 74.9 | 96 | 66 | 7.4 | 0.0 |
| December | 84.3 | 73.3 | 94 | 63 | 4.8 | 0.0 |
| Entire year | 86.8 | 75.1 | 98 | 60 | 59.7 | 0.0 |
|
More San Juan Weather Records
1956–2024
|
||
|---|---|---|
| Highest daily low | 83 °F | September 14, 2023 |
| Lowest daily high | 73 °F | January 18, 2000 |
| Greatest daily range (Difference of high and low) |
26 °F | February 15, 1983 |
| Greatest difference in daily high over two conscutive days |
15 °F | Mar 7–8, 1962 |
| Most daily precipitation | 9.2 inches | July 18, 2013 |
| Most monthly precipitation | 18.6 inches | August 2011 |
| Most yearly precipitation | 89.5 inches | 2010 |
| Most yearly days with precipitation | 271 | 2022 |
| Most daily snow | none | - |
| Most days in a year ≥ 80 °F | 366 | 2016 |
| Most days in a year ≥ 90 °F | 172 | 1983 |
|
San Juan Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 30 days | Dec 29, 2019 – Jan 27, 2020 |
| Without precipitation | 36 days | Feb 26 – Apr 2, 2005 |
| High temperature ≥ 80 °F | 935 days | Feb 23, 1973 – Sep 15, 1975 |
| High temperature ≥ 90 °F | 36 days | May 30 – Jul 4, 2012 |
| Years | Station | Coordinates |
|---|---|---|
| 1956–2024 | San Juan Airport | location |