Riverside Temperatures: Averages by Month





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

The average high and low temperatures are listed below for Riverside, 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 Riverside, scroll down farther. There are also monthly and yearly counts of days with cold weather.

All the numbers are averages, based on climate data gathered from 1981 to 2010.

Average Riverside temperatures
High °F Low °F   High °C Low °C
69 43 January 21 6
70 45 February 21 7
73 46 March 23 8
78 50 April 25 10
83 55 May 28 13
89 59 June 31 15
95 64 July 35 18
96 65 August 36 18
92 61 September 34 16
83 55 October 29 13
75 47 November 24 8
69 42 December 20 5
81 53 Year 27 11

Days of Hot Weather in Riverside

Riverside often has 100-degree Fahrenheit weather in summer. The occasional spring or fall day will also get that hot.

Days per month in Riverside of at least 80, 90 or 100 °F
  80 °F
27 °C
90 °F
32 °C
100 °F
38 °C
January 3 0 0
February 4 0 0
March 7 1 0
April 11 3 0
May 18 6 1
June 25 13 2
July 31 25 6
August 31 26 8
September 28 19 6
October 19 8 1
November 8 1 0
December 3 0 0
Year 188 103 24

How Often Riverside Has Cold Temperatures

The coldest nights of winter at Riverside drop down to 32 °F (0 °C) or a little below. But the city averages only two nights a year when its that chilly. And the days always warm up to above freezing.

Days per month on average in Riverside when the minimum temperature drops to 40 or 32 °F or below
  40 °F
4 °C
32 °F
0 °C
January 10 1
February 6 0
March 3 0
April 1 0
May 0 0
June 0 0
July 0 0
August 0 0
September 0 0
October 0 0
November 4 0
December 13 1
Year 37 2
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

California Temperatures
Back to Top