Riverside Weather in 2021

2021 Riverside Weather Extremes
Highest temperature	107 °F	September 5
Lowest temperature	34 °F	December 16
Highest daily low	72 °F	September 10
Lowest daily high	51 °F	December 28
Most daily precipitation	1.2 inches	December 14
Total annual precipitation	7.3 inches	-

Rank	Temperature	Date
1	107 °F	Sep 5
2	104 °F	Sep 21
2	104 °F	Aug 27
2	104 °F	Aug 2
2	104 °F	Jun 15
6	103 °F	Aug 28
6	103 °F	Aug 26
6	103 °F	Aug 3
9	101 °F	Sep 22
9	101 °F	Sep 11
9	101 °F	Sep 4

Rank	Temperature	Date
1	34 °F	December 16
1	34 °F	December 15
1	34 °F	January 26
4	35 °F	December 20
5	36 °F	December 12
6	37 °F	December 19
6	37 °F	March 16
8	38 °F	December 27
8	38 °F	March 12
8	38 °F	January 30
8	38 °F	January 24

January 2021 Riverside Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	68	45	0.00
January 2	65	41	0.00
January 3	64	41	0.00
January 4	66	41	0.00
January 5	70	39	0.00
January 6	74	45	0.00
January 7	78	43	0.00
January 8	73	43	0.00
January 9	70	39	0.00
January 10	71	44	0.00
January 11	73	43	0.00
January 12	74	43	0.00
January 13	78	46	0.00
January 14	84	48	0.00
January 15	87	58	0.00
January 16	86	48	0.00
January 17	85	57	0.00
January 18	80	48	0.00
January 19	65	47	0.00
January 20	71	58	0.00
January 21	71	49	0.00
January 22	65	45	0.00
January 23	53	44	0.28
January 24	57	38	0.04
January 25	51	41	0.42
January 26	54	34	0.00
January 27	60	41	0.00
January 28	65	39	0.29
January 29	52	44	0.56
January 30	63	38	0.00
January 31	70	43	0.00

February 2021 Riverside Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	68	55	0.00
February 2	73	51	0.00
February 3	70	45	0.00
February 4	70	44	0.00
February 5	71	40	0.00
February 6	79	41	0.00
February 7	74	43	0.00
February 8	68	42	0.00
February 9	59	49	0.00
February 10	63	48	0.00
February 11	70	42	0.00
February 12	65	51	0.00
February 13	61	44	0.00
February 14	64	42	0.00
February 15	61	43	0.00
February 16	65	46	0.00
February 17	68	40	0.00
February 18	69	47	0.00
February 19	73	40	0.00
February 20	68	41	0.00
February 21	73	53	0.00
February 22	79	48	0.00
February 23	83	47	0.00
February 24	77	45	0.00
February 25	70	46	0.00
February 26	76	40	0.00
February 27	70	40	0.00
February 28	68	46	0.00

March 2021 Riverside Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	74	41	0.00
March 2	79	42	0.00
March 3	59	40	0.12
March 4	67	39	0.00
March 5	81	42	0.00
March 6	72	43	0.00
March 7	65	46	0.00
March 8	66	49	0.00
March 9	62	41	0.00
March 10	57	43	0.66
March 11	57	42	0.12
March 12	57	38	0.47
March 13	62	44	0.00
March 14	62	47	0.00
March 15	54	41	0.08
March 16	59	37	0.00
March 17	69	40	0.00
March 18	71	44	0.00
March 19	75	45	0.00
March 20	68	50	0.00
March 21	66	43	0.00
March 22	69	41	0.00
March 23	68	45	0.00
March 24	73	51	0.00
March 25	62	46	0.00
March 26	71	48	0.00
March 27	81	42	0.00
March 28	90	46	0.00
March 29	84	50	0.00
March 30	85	48	0.00
March 31	87	53	0.00

April 2021 Riverside Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	87	57	0.00
April 2	82	47	0.00
April 3	84	49	0.00
April 4	84	48	0.00
April 5	78	50	0.00
April 6	76	51	0.00
April 7	84	52	0.00
April 8	79	52	0.00
April 9	84	50	0.00
April 10	82	52	0.00
April 11	79	52	0.00
April 12	72	54	0.00
April 13	65	55	0.00
April 14	67	50	0.00
April 15	72	45	0.00
April 16	76	47	0.00
April 17	81	49	0.00
April 18	86	48	0.00
April 19	90	50	0.00
April 20	80	52	0.00
April 21	68	55	0.00
April 22	64	54	0.00
April 23	67	53	0.00
April 24	71	53	0.00
April 25	70	52	0.00
April 26	67	50	0.00
April 27	69	50	0.00
April 28	86	45	0.00
April 29	98	52	0.00
April 30	98	58	0.00

May 2021 Riverside Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	85	56	0.00
May 2	72	56	0.00
May 3	85	53	0.00
May 4	91	55	0.00
May 5	90	57	0.00
May 6	81	56	0.00
May 7	78	56	0.00
May 8	79	57	0.00
May 9	75	55	0.00
May 10	74	56	0.00
May 11	83	54	0.00
May 12	84	57	0.00
May 13	80	55	0.00
May 14	81	56	0.00
May 15	72	57	0.00
May 16	68	56	0.00
May 17	67	56	0.00
May 18	79	58	0.00
May 19	77	54	0.00
May 20	73	56	0.00
May 21	73	52	0.00
May 22	72	50	0.00
May 23	78	49	0.00
May 24	95	53	0.00
May 25	91	60	0.00
May 26	85	56	0.00
May 27	80	54	0.00
May 28	82	54	0.00
May 29	79	56	0.00
May 30	80	57	0.00
May 31	86	56	0.00

June 2021 Riverside Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	92	57	0.00
June 2	90	59	0.00
June 3	90	59	0.00
June 4	88	59	0.00
June 5	87	56	0.00
June 6	80	56	0.00
June 7	72	56	0.00
June 8	79	55	0.00
June 9	82	56	0.00
June 10	82	53	0.00
June 11	89	54	0.00
June 12	94	58	0.00
June 13	96	58	0.00
June 14	100	61	0.00
June 15	104	66	0.00
June 16	96	69	0.00
June 17	98	68	0.00
June 18	93	67	0.00
June 19	93	64	0.00
June 20	91	63	0.00
June 21	94	59	0.00
June 22	91	60	0.00
June 23	92	64	0.02
June 24	88	61	0.00
June 25	88	59	0.00
June 26	96	62	0.00
June 27	98	66	0.00
June 28	99	65	0.00
June 29	90	64	0.00
June 30	93	63	0.00

July 2021 Riverside Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	99	62	0.00
July 2	99	64	0.00
July 3	96	67	0.00
July 4	92	62	0.00
July 5	93	62	0.00
July 6	96	61	0.00
July 7	95	63	0.00
July 8	98	66	0.00
July 9	98	70	0.00
July 10	97	70	0.00
July 11	98	67	0.00
July 12	93	66	0.00
July 13	97	67	0.00
July 14	96	68	0.00
July 15	95	66	0.00
July 16	94	64	0.00
July 17	96	65	0.00
July 18	99	71	0.00
July 19	98	71	0.00
July 20	96	69	0.00
July 21	99	71	0.00
July 22	96	69	0.00
July 23	95	67	0.00
July 24	90	65	0.00
July 25	90	64	0.01
July 26	89	66	0.15
July 27	96	65	0.00
July 28	97	68	0.00
July 29	99	68	0.00
July 30	100	68	0.00
July 31	100	68	0.00

August 2021 Riverside Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	98	66	0.00
August 2	104	67	0.00
August 3	103	67	0.00
August 4	100	67	0.00
August 5	97	69	0.00
August 6	93	64	0.00
August 7	95	61	0.00
August 8	93	62	0.00
August 9	95	63	0.00
August 10	99	67	0.00
August 11	98	72	0.00
August 12	98	69	0.00
August 13	95	67	0.00
August 14	95	68	0.00
August 15	99	70	0.00
August 16	98	69	0.00
August 17	91	68	0.00
August 18	80	68	0.00
August 19	85	65	0.00
August 20	85	64	0.00
August 21	77	64	0.00
August 22	82	63	0.00
August 23	86	60	0.00
August 24	93	60	0.00
August 25	98	65	0.00
August 26	103	68	0.00
August 27	104	65	0.00
August 28	103	67	0.00
August 29	100	67	0.00
August 30	92	65	0.00
August 31	84	65	0.00

September 2021 Riverside Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	80	63	0.00
September 2	85	63	0.00
September 3	94	60	0.00
September 4	101	62	0.00
September 5	107	66	0.00
September 6	96	66	0.00
September 7	94	67	0.00
September 8	96	67	0.00
September 9	99	71	0.00
September 10	99	72	0.00
September 11	101	69	0.00
September 12	100	67	0.00
September 13	100	64	0.00
September 14	95	60	0.00
September 15	90	57	0.00
September 16	86	56	0.00
September 17	85	56	0.00
September 18	84	59	0.00
September 19	86	55	0.00
September 20	92	59	0.00
September 21	104	62	0.00
September 22	101	67	0.00
September 23	93	67	0.00
September 24	85	62	0.00
September 25	87	63	0.00
September 26	78	60	0.00
September 27	74	62	0.00
September 28	75	61	0.00
September 29	79	60	0.00
September 30	93	53	0.00

October 2021 Riverside Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	95	56	0.00
October 2	97	57	0.00
October 3	98	62	0.00
October 4	94	63	0.00
October 5	83	61	0.06
October 6	77	60	0.00
October 7	72	61	0.00
October 8	71	57	0.15
October 9	75	55	0.00
October 10	84	50	0.00
October 11	74	51	0.00
October 12	71	48	0.00
October 13	77	46	0.00
October 14	83	46	0.00
October 15	87	52	0.00
October 16	90	55	0.00
October 17	82	52	0.00
October 18	68	52	0.00
October 19	74	47	0.00
October 20	79	47	0.00
October 21	84	48	0.00
October 22	75	50	0.00
October 23	70	56	0.00
October 24	73	57	0.00
October 25	66	53	0.08
October 26	71	48	0.00
October 27	88	48	0.00
October 28	91	58	0.00
October 29	90	58	0.00
October 30	81	54	0.00
October 31	80	57	0.00

November 2021 Riverside Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	70	52	0.00
November 2	75	51	0.00
November 3	85	51	0.00
November 4	85	52	0.00
November 5	87	53	0.00
November 6	77	53	0.00
November 7	74	52	0.00
November 8	74	50	0.00
November 9	70	51	0.00
November 10	80	50	0.00
November 11	89	55	0.00
November 12	92	64	0.00
November 13	93	56	0.00
November 14	94	53	0.00
November 15	88	52	0.00
November 16	76	51	0.00
November 17	72	52	0.00
November 18	75	47	0.00
November 19	71	48	0.00
November 20	70	50	0.00
November 21	80	54	0.00
November 22	84	55	0.00
November 23	77	53	0.00
November 24	74	46	0.00
November 25	73	51	0.00
November 26	81	44	0.00
November 27	80	42	0.00
November 28	85	46	0.00
November 29	85	49	0.00
November 30	89	47	0.00

December 2021 Riverside Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	89	50	0.00
December 2	76	47	0.00
December 3	68	48	0.00
December 4	62	47	0.00
December 5	68	42	0.00
December 6	75	42	0.00
December 7	62	48	0.01
December 8	67	44	0.00
December 9	56	47	0.11
December 10	60	43	0.00
December 11	67	40	0.00
December 12	65	36	0.00
December 13	56	41	0.00
December 14	56	42	1.16
December 15	56	34	0.00
December 16	57	34	0.00
December 17	67	42	0.00
December 18	70	42	0.00
December 19	68	37	0.00
December 20	70	35	0.00
December 21	67	47	0.00
December 22	67	43	0.00
December 23	57	50	1.03
December 24	58	47	0.78
December 25	56	44	0.01
December 26	57	43	0.23
December 27	52	38	0.31
December 28	51	42	0.02
December 29	53	42	0.04
December 30	60	46	0.05
December 31	61	43	0.00