The summary climate graph for San Nicolas Island, CA shows a selection of temperature, rainfall and snow minimum, mean and maximum measures over the course of a year. Click on each of the measures in the key to toggle them on and off.
The warmest month in San Nicolas Island Nolf, San Nicolas Island, California is September with an average high temperature of 73.2°F. The hottest day on record was October 1 2012 when the temperature hit 111.9°F. During January the overnight temperature drops to an average of 50.4°F with the lowest temperature of 25.2°F being recorded on March 25 1992.
The warmest days on record are:
| 1 Oct 2012 | 111.9°F |
| 27 Aug 2009 | 108°F |
| 19 Jun 2008 | 107.1°F |
| 4 Nov 2012 | 102°F |
| 23 Sep 2012 | 100.9°F |
The warmest months on average were:
| October 2012 | 88.3°F |
| November 2012 | 81.8°F |
| September 1984 | 81.8°F |
| September 2012 | 80.8°F |
| October 2008 | 79.3°F |
The coldest days on record are:
| 25 Mar 1992 | 25.2°F |
| 1 Jul 1976 | 30.2°F |
| 19 May 1977 | 30.2°F |
| 30 Jan 1978 | 32°F |
| 8 Oct 1992 | 32.9°F |
The coldest months on average were:
| March 1976 | 44.4°F |
| April 1977 | 44.8°F |
| December 1978 | 44.8°F |
| February 2011 | 45.3°F |
| January 1989 | 45.6°F |
The wettest month in San Nicolas Island, CA is January with an average of 1.0 inches of rain falling on 5 to 5 days. The driest month by average rainfall in San Nicolas Island, CA is September with an average of 0.2 inches of rain falling on 1 to 2 days. Although in August it typically rains on less days with 0.3 inches falling in 0 to 1 days
The wettest days on record are:
| 11 September 1976 | 0.4 inches |
| 5 September 1978 | 0.3 inches |
| 12 September 1984 | 0.2 inches |
| 25 September 1986 | 0.2 inches |
| 5 September 1979 | 0.1 inches |
The wettest months on record are:
| February 1983 | 3.7 inches |
| February 1980 | 3.2 inches |
| January 2008 | 2.9 inches |
| January 1979 | 2.9 inches |
| January 1980 | 2.7 inches |
The driest months on record are:
| July 1943 | 0 inches |
| August 1943 | 0 inches |
| September 1943 | 0 inches |
| October 1943 | 0 inches |
| November 1943 | 0 inches |