Riverside CA Recent December Temperatures, Rainfall

The numbers here describe what the December weather in Riverside, California was like for every year since 2010. A series of tables gives December data by year for temperature and precipitation.

They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. That's followed by how many hot or cold days occurred each December. Then there's information on how much rain actually landed this month during recent years, as well as how often Riverside had wet weather.

The climate data come from weather measurements made at the Riverside Municipal Airport.

Temperature

December temperature averages by year in Riverside
High °F	Low °F	Year	High °C	Low °C
71	47	2023	21	9
65	44	2022	18	6
63	43	2021	17	6
71	44	2020	22	7
64	44	2019	18	7
67	45	2018	19	7
74	46	2017	24	8
66	47	2016	19	8
67	41	2015	19	5
66	48	2014	19	9
70	45	2013	21	7
64	45	2012	18	7
67	41	2011	20	5
67	46	2010	20	8

Number of days in December when the temperature in Riverside dropped to 32 or below, or rose to at least 70 degrees Fahrenheit
32 °F 0 °C	Year	70 °F 21 °C
0	2023	14
0	2022	7
0	2021	5
0	2020	18
0	2019	6
0	2018	11
0	2017	22
0	2016	7
0	2015	10
0	2014	8
0	2013	17
0	2012	7
0	2011	12
1	2010	12

Rain

This table gives the total precipitation that fell on Riverside during December in each year from 2010. The number of days with precipitation counts the days when rainfall amounted to 0.01 inches (0.3 millimeters) or more.

Total rainfall for December in Riverside
Days	Year	Inches	Millimetres
4	2023	0.9	22
8	2022	2.0	51
10	2021	3.7	94
1	2020	1.2	29
7	2019	2.5	64
2	2018	1.1	28
0	2017	0.0	0
8	2016	2.6	66
6	2015	0.7	17
7	2014	3.0	75
2	2013	0.2	4
10	2012	1.4	35
2	2011	0.5	12
13	2010	6.9	175

Riverside - Recent December Temperatures and Rainfall

Temperature

Rain

Reference

More on Weather in Riverside