When does Phoenix typically hit 100 degrees? How about 110 in Yuma? The following list provides official 30-year averages for certain temperature thresholds, as well as the earliest and latest days of occurrence for each if these cities. 
									  
									
										
											
												
												Phoenix, AZ
												 | 
											 
											
												| Temperature | 
												Average First Date 
												of Occurrence 
												(1991-2020) | 
												Average Last Date 
												of Occurrence 
												(1991-2020) | 
												Earliest 
												(1896-Present) | 
												Latest 
												(1896-Present) | 
											 
											
												| 85° F | 
												Mar 6 | 
												Nov 11 | 
												Jan 19, 1971 | 
												Dec 29, 1980 | 
											 
											
												| 86° F | 
												Mar 13 | 
												Nov 10 | 
												Jan 19, 1971 | 
												Dec 16, 1980 | 
											 
											
												| 87° F | 
												Mar 17 | 
												Nov 9 | 
												Jan 19, 1971 | 
												Dec 10, 1950 | 
											 
											
												| 88° F | 
												Mar 20 | 
												Nov 5 | 
												Jan 19, 1971 | 
												Nov 26, 2017 | 
											 
											
												| 89° F | 
												Mar 25 | 
												Nov 2 | 
												Feb 7, 1963 | 
												Nov 26, 2017 | 
											 
											
												| 90° F | 
												Mar 30 | 
												Oct 30 | 
												Feb 17, 2016 | 
												Nov 17, 2020 | 
											 
											
												| 91° F | 
												Apr 1 | 
												Oct 26 | 
												Feb 24, 1904 | 
												Nov 17, 2020 | 
											 
											
												| 92° F | 
												Apr 3 | 
												Oct 24 | 
												Feb 25, 1921 | 
												Nov 17, 2020 | 
											 
											
												| 93° F | 
												Apr 6 | 
												Oct 22 | 
												Mar 5, 1972 | 
												Nov 12, 1999 | 
											 
											
												| 94° F | 
												Apr 9 | 
												Oct 19 | 
												Mar 10, 1989 | 
												Nov 6, 2007 | 
											 
											
												| 95° F | 
												Apr 12 | 
												Oct 18 | 
												Mar 10, 1989 | 
												Nov 5, 2020 | 
											 
											
												| 96° F | 
												Apr 14 | 
												Oct 16 | 
												Mar 16, 2007 | 
												Nov 5, 2020 | 
											 
											
												| 97° F | 
												Apr 19 | 
												Oct 13 | 
												Mar 16, 2007 | 
												Nov 5, 2020 | 
											 
											
												| 98° F | 
												Apr 24 | 
												Oct 11 | 
												Mar 16, 2007 | 
												Nov 5, 2020 | 
											 
											
												| 99° F | 
												Apr 28 | 
												Oct 8 | 
												Mar 16, 2007 | 
												Nov 5, 2020 | 
											 
											
												| 100° F | 
												May 2 | 
												Oct 5 | 
												Mar 26, 1988 | 
												Oct 27, 2016 | 
											 
											
												| 101° F | 
												May 9 | 
												Oct 1 | 
												Apr 6, 1989 | 
												Oct 22, 2003 | 
											 
											
												| 102° F | 
												May 14 | 
												Sep 29 | 
												Apr 6, 1989 | 
												Oct 22, 2003 | 
											 
											
												| 103° F | 
												May 18 | 
												Sep 26 | 
												Apr 7, 1989 | 
												Oct 21, 2003 | 
											 
											
												| 104° F | 
												May 20 | 
												Sep 22 | 
												Apr 7, 1989 | 
												Oct 20, 2023 | 
											 
											
												| 105° F | 
												May 22 | 
												Sep 20 | 
												Apr 20, 1989 | 
												Oct 16, 2023 | 
											 
											
												| 106° F | 
												May 27 | 
												Sep 17 | 
												May 2, 1947 | 
												Oct 10, 2024 | 
											 
											
												| 107° F | 
												May 31 | 
												Sep 14 | 
												May 2, 1947 | 
												Oct 10, 2024 | 
											 
											
												| 108° F | 
												Jun 4 | 
												Sep 6 | 
												May 3, 1947 | 
												Oct 8, 2024 | 
											 
											
												| 109° F | 
												Jun 7 | 
												Aug 30 | 
												May 3, 1947 | 
												Oct 7, 2024 | 
											 
											
												| 110° F | 
												Jun 11 | 
												Aug 26 | 
												May 8, 1989 | 
												Oct 7, 2024 | 
											 
										
									 
									  
									
										
											
												
												Yuma, AZ
												 | 
											 
											
												| Temperature | 
												Average First Date 
												of Occurrence 
												(1991-2020) | 
												Average Last Date 
												of Occurrence 
												(1991-2020) | 
												Earliest 
												(1878-Present) | 
												Latest 
												(1878-Present) | 
											 
											
												| 85 °F | 
												Feb 23 | 
												Nov 11 | 
												Jan 17, 2011 | 
												Dec 12, 1958 | 
											 
											
												| 86 °F | 
												Feb 27 | 
												Nov 9 | 
												Jan 17, 2011 | 
												Dec 3, 1958 | 
											 
											
												| 87 °F | 
												Mar 7 | 
												Nov 8 | 
												Jan 19, 1971 | 
												Nov 29, 1950 | 
											 
											
												| 88 °F | 
												Mar 13 | 
												Nov 6 | 
												Jan 19, 1971 | 
												Nov 27, 1950 | 
											 
											
												| 89 °F | 
												Mar 17 | 
												Nov 3 | 
												Feb 3, 1963 | 
												Nov 26, 2017 | 
											 
											
												| 90 °F | 
												Mar 21 | 
												Nov 1 | 
												Feb 3, 1963 | 
												Nov 26, 2017 | 
											 
											
												| 91 °F | 
												Mar 22 | 
												Oct 31 | 
												Feb 3, 1963 | 
												Nov 23, 2017 | 
											 
											
												| 92 °F | 
												Mar 28 | 
												Oct 28 | 
												Feb 4, 1963 | 
												Nov 14, 1906 | 
											 
											
												| 93 °F | 
												Mar 31 | 
												Oct 24 | 
												Feb 10, 1951 | 
												Nov 14, 1906 | 
											 
											
												| 94 °F | 
												Apr 4 | 
												Oct 22 | 
												Feb 14, 1957 | 
												Nov 9, 1980 | 
											 
											
												| 95 °F | 
												Apr 8 | 
												Oct 18 | 
												Feb 25, 1986 | 
												Nov 6, 1988 | 
											 
											
												| 96 °F | 
												Apr 11 | 
												Oct 16 | 
												Feb 26, 1986 | 
												Nov 6, 1988 | 
											 
											
												| 97 °F | 
												Apr 16 | 
												Oct 14 | 
												Feb 28, 1986 | 
												Nov 5, 1980 | 
											 
											
												| 98 °F | 
												Apr 18 | 
												Oct 11 | 
												Mar 4, 1910 | 
												Nov 3, 1962 | 
											 
											
												| 99 °F | 
												Apr 22 | 
												Oct 9 | 
												Mar 10, 1916 | 
												Oct 25, 1959 | 
											 
											
												| 100 °F | 
												Apr 25 | 
												Oct 6 | 
												Mar 12, 1916 | 
												Oct 25, 1959 | 
											 
											
												| 101 °F | 
												Apr 29 | 
												Oct 5 | 
												Mar 17, 2007 | 
												Oct 24, 1959 | 
											 
											
												| 102 °F | 
												May 7 | 
												Oct 3 | 
												Mar 21, 2004 | 
												Oct 24, 1959 | 
											 
											
												| 103 °F | 
												May 11 | 
												Oct 1 | 
												Apr 3, 1961 | 
												Oct 24, 1959 | 
											 
											
												| 104 °F | 
												May 18 | 
												Sep 29 | 
												Apr 4, 1961 | 
												Oct 24, 1959 | 
											 
											
												| 105 °F | 
												May 23 | 
												Sep 26 | 
												Apr 6, 1989 | 
												Oct 24, 1959 | 
											 
											
												| 106 °F | 
												May 26 | 
												Sep 24 | 
												Apr 6, 1989 | 
												Oct 16, 1958 | 
											 
											
												| 107 °F | 
												May 30 | 
												Sep 21 | 
												Apr 6, 1989 | 
												Oct 12, 1950 | 
											 
											
												| 108 °F | 
												Jun 2 | 
												Sep 18 | 
												May 2, 1947 | 
												Oct 12, 1950 | 
											 
											
												| 109 °F | 
												Jun 5 | 
												Sep 11 | 
												May 2, 1947 | 
												Oct 12, 1950 | 
											 
											
												| 110 °F | 
												Jun 11 | 
												Sep 6 | 
												May 2, 1947 | 
												Oct 7, 2024 | 
											 
										
									 
									 | 
								 
							
						 
						  
						  
						
							
								
									
									El Centro, CA
									 | 
								 
								
									| Temperature | 
									Average First Date 
									of Occurrence 
									(1991-2020) | 
									Average Last Date 
									of Occurrence 
									(1991-2020) | 
									Earliest 
									(1926-Present) | 
									Latest 
									(1926-Present) | 
								 
								
									| 85 °F | 
									Feb 22 | 
									Nov 11 | 
									Jan 7, 1962 | 
									Dec 24, 1964 | 
								 
								
									| 86 °F | 
									Feb 28 | 
									Nov 10 | 
									Jan 7, 1962 | 
									Dec 24, 1964 | 
								 
								
									| 87 °F | 
									Mar 3 | 
									Nov 9 | 
									Jan 7, 1962 | 
									Dec 24, 1964 | 
								 
								
									| 88 °F | 
									Mar 10 | 
									Nov 5 | 
									Jan 18, 1971 | 
									Dec 7, 1938 | 
								 
								
									| 89 °F | 
									Mar 15 | 
									Nov 4 | 
									Jan 18, 1971 | 
									Dec 3, 1958 | 
								 
								
									| 90 °F | 
									Mar 18 | 
									Nov 2 | 
									Jan 19, 1971 | 
									Dec 3, 1958 | 
								 
								
									| 91 °F | 
									Mar 23 | 
									Oct 31 | 
									Feb 6, 1963 | 
									Nov 23, 2017 | 
								 
								
									| 92 °F | 
									Mar 28 | 
									Oct 27 | 
									Feb 24, 1986 | 
									Nov 15, 1967 | 
								 
								
									| 93 °F | 
									Apr 2 | 
									Oct 26 | 
									Feb 25, 1986 | 
									Nov 7, 2008 | 
								 
								
									| 94 °F | 
									Apr 5 | 
									Oct 24 | 
									Feb 25, 1986 | 
									Nov 7, 2008 | 
								 
								
									| 95 °F | 
									Apr 8 | 
									Oct 20 | 
									Feb 26, 1986 | 
									Nov 7, 2008 | 
								 
								
									| 96 °F | 
									Apr 12 | 
									Oct 16 | 
									Feb 27, 1986 | 
									Nov 7, 2008 | 
								 
								
									| 97 °F | 
									Apr 15 | 
									Oct 14 | 
									Mar 6, 1972 | 
									Nov 7, 2008 | 
								 
								
									| 98 °F | 
									Apr 19 | 
									Oct 12 | 
									Mar 15, 1934 | 
									Nov 7, 2008 | 
								 
								
									| 99 °F | 
									Apr 25 | 
									Oct 11 | 
									Mar 15, 1934 | 
									Nov 7, 2008 | 
								 
								
									| 100 °F | 
									Apr 28 | 
									Oct 9 | 
									Mar 15, 1934 | 
									Nov 7, 2008 | 
								 
								
									| 101 °F | 
									May 5 | 
									Oct 6 | 
									Mar 17, 2007 | 
									Nov 7, 2008 | 
								 
								
									| 102 °F | 
									May 12 | 
									Oct 3 | 
									Apr 4, 1961 | 
									Oct 23, 2003 | 
								 
								
									| 103 °F | 
									May 16 | 
									Sep 29 | 
									Apr 4, 1961 | 
									Oct 21, 2003 | 
								 
								
									| 104 °F | 
									May 19 | 
									Sep 28 | 
									Apr 6, 1989 | 
									Oct 21, 2003 | 
								 
								
									| 105 °F | 
									May 22 | 
									Sep 25 | 
									Apr 7, 1989 | 
									Oct 12, 1965 | 
								 
								
									| 106 °F | 
									May 25 | 
									Sep 24 | 
									Apr 28, 2007 | 
									Oct 12, 1965 | 
								 
								
									| 107 °F | 
									May 31 | 
									Sep 21 | 
									May 2, 1947 | 
									Oct 3, 2012 | 
								 
								
									| 108 °F | 
									Jun 4 | 
									Sep 15 | 
									May 2, 1947 | 
									Oct 3, 1952 | 
								 
								
									| 109 °F | 
									Jun 6 | 
									Sep 10 | 
									May 2, 1947 | 
									Oct 1, 1980 | 
								 
								
									| 110 °F | 
									Jun 14 | 
									Sep 5 | 
									May 2, 1947 | 
									Oct 1, 1980 | 
								 
							
						 
						  
						  
						  
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