Fresno Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is in Fresno, California during each month of the year.

The average high and low temperatures are listed below for the city, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 80, 90 or 100 °F monthly and annually in Fresno, scroll down farther. There are also counts of nights with cool temperatures.

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1981 to 2010 weather.

10-year temperature averages for Fresno, 2010 to 2019
High °F Low °F   High °C Low °C
59 41 January 15 5
63 43 February 17 6
70 47 March 21 9
76 52 April 25 11
83 57 May 28 14
94 65 June 35 18
100 70 July 38 21
99 68 August 37 20
93 64 September 34 18
81 55 October 27 13
67 46 November 20 8
58 40 December 14 4
79 54 Year 26 12
30-year temperature averages for Fresno, 1981 to 2010
High °F Low °F   High °C Low °C
55 38 January 13 4
62 42 February 16 5
68 46 March 20 8
75 49 April 24 10
84 56 May 29 13
92 62 June 33 17
98 68 July 37 20
97 66 August 36 19
91 62 September 33 16
80 53 October 26 12
65 43 November 18 6
55 38 December 13 3
77 52 Year 25 11

Days of Hot Weather in Fresno

Fresno summers are hot, when all but a few days have highs over 90 and many top 100 Fahrenheit. The 90-degree weather usually begins in April and can linger into October. From May to September, the San Joaquin Valley city averages 32 days with temperatures of 100 °F or more.

Days per month in Fresno of at least 80, 90 or 100 °F
  80 °F
27 °C
90 °F
32 °C
100 °F
38 °C
January 0 0 0
February 0 0 0
March 1 0 0
April 9 2 0
May 21 9 1
June 28 19 5
July 31 29 13
August 31 27 10
September 27 18 3
October 15 3 0
November 1 0 0
December 0 0 0
Year 163 106 32

How Often Fresno Has Cool Temperatures

Most nights at Fresno never get colder than 40 °F. From November to February, the area averages 13 nights with frost, but even then it always warms up to at least 40 degrees the next day. Only about once a decade does really cold weather descend on Fresno, when the temperature drops to 20 °F (-8 °C).

Days per month on average in Fresno when the minimum temperature drops to at least 40 or 32 °F
  32 °F
0 °C
40 °F
4 °C
January 6 19
February 2 11
March 0 5
April 0 1
May 0 0
June 0 0
July 0 0
August 0 0
September 0 0
October 0 0
November 1 9
December 5 20
Year 13 66
References

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.

NOAA National Centers for Environmental Information. 1981-2010 U.S. Climate Normals. (Data Access. FTP.)

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