Belleville Weather in 2021

Historical record of Belleville, Illinois weather for the year 2021 based on NOAA data.

Jump to Month:

Year:

2021 Belleville Weather Extremes
Highest temperature	99 °F	June 19
Lowest temperature	-5 °F	February 16
Highest daily low	76 °F	June 28
Lowest daily high	6 °F	February 16
Most daily precipitation	2.3 inches	July 30
Most daily snow	7.5 inches	February 16
Total annual snow	11.9 inches	-

What was the hottest temperature in Belleville in 2021?

The highest temperature recorded in Belleville, Illinois in 2021 was 99 °F which happened on June 19.

Highest Temperatures: All-Time By Year

Highest Temperatures in Belleville in 2021

Rank	Temperature	Date
1	99 °F	Jun 19
2	97 °F	Jul 30
2	97 °F	Jun 18
4	95 °F	Jun 13
5	94 °F	Aug 26
5	94 °F	Jun 15
5	94 °F	Jun 12
8	93 °F	Aug 30
8	93 °F	Aug 27
8	93 °F	Aug 25
8	93 °F	Aug 24
8	93 °F	Aug 13
8	93 °F	Jul 29
8	93 °F	Jun 30

What was the coldest temperature in Belleville in 2021?

The lowest temperature recorded in Belleville, Illinois in 2021 was -5 °F which happened on Feb 16.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Belleville in 2021

Rank	Temperature	Date
1	-5 °F	February 16
2	-3 °F	February 19
2	-3 °F	February 17
4	0 °F	February 15
4	0 °F	February 14
6	1 °F	February 13
7	2 °F	February 20
8	5 °F	February 7
9	6 °F	February 8
10	7 °F	January 28

January 2021 Belleville Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	32	29	n/a	0.0
January 2	35	31	n/a	0.0
January 3	34	26	n/a	0.0
January 4	41	24	n/a	0.0
January 5	37	28	n/a	0.0
January 6	52	26	0.00	0.0
January 7	43	32	0.00	0.0
January 8	39	33	0.00	0.0
January 9	35	29	n/a	0.0
January 10	33	27	n/a	0.0
January 11	36	26	0.00	0.0
January 12	32	21	0.00	0.0
January 13	53	29	0.00	0.0
January 14	51	34	0.00	0.0
January 15	50	33	0.00	0.0
January 16	35	32	n/a	n/a
January 17	38	31	n/a	n/a
January 18	39	28	n/a	n/a
January 19	46	24	n/a	0.0
January 20	47	25	0.00	0.0
January 21	46	28	0.00	0.0
January 22	56	27	0.00	0.0
January 23	36	17	0.00	0.0
January 24	38	31	0.10	0.0
January 25	42	n/a	1.36	0.0
January 26	40	34	0.17	0.0
January 27	n/a	28	0.01	0.2
January 28	32	7	0.11	1.7
January 29	31	13	0.00	0.0
January 30	36	31	0.00	0.0
January 31	43	32	n/a	n/a

February 2021 Belleville Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	47	13	n/a	n/a
February 2	37	26	0.00	0.0
February 3	40	22	0.00	0.0
February 4	44	29	0.16	0.0
February 5	45	24	0.13	0.0
February 6	44	16	0.01	0.0
February 7	29	5	0.00	0.0
February 8	20	6	0.00	0.0
February 9	21	11	0.07	0.7
February 10	21	15	0.04	0.4
February 11	21	15	0.01	0.0
February 12	19	13	0.00	0.0
February 13	20	1	0.00	0.0
February 14	11	0	0.00	0.0
February 15	8	0	0.01	0.3
February 16	6	-5	n/a	7.5
February 17	24	-3	0.00	0.0
February 18	20	10	0.03	0.6
February 19	25	-3	0.00	0.0
February 20	32	2	0.00	0.0
February 21	39	21	0.00	0.0
February 22	45	35	0.00	0.0
February 23	53	35	0.00	0.0
February 24	66	44	0.00	0.0
February 25	65	30	0.00	0.0
February 26	53	28	0.00	0.0
February 27	48	32	0.00	0.0
February 28	58	38	0.30	0.0

March 2021 Belleville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	63	30	0.68
March 2	51	28	0.00
March 3	55	34	0.00
March 4	71	35	0.00
March 5	60	30	0.00
March 6	49	29	0.00
March 7	56	29	0.00
March 8	66	28	0.00
March 9	69	43	0.00
March 10	72	50	0.00
March 11	66	51	0.33
March 12	60	45	0.52
March 13	57	47	0.00
March 14	56	46	0.00
March 15	58	42	0.42
March 16	52	42	0.04
March 17	50	41	0.00
March 18	58	45	2.22
March 19	58	33	0.22
March 20	51	32	0.00
March 21	59	31	0.00
March 22	66	31	0.00
March 23	66	43	0.00
March 24	62	48	0.33
March 25	70	45	0.00
March 26	56	47	0.70
March 27	59	42	n/a
March 28	79	36	n/a
March 29	55	33	n/a
March 30	66	43	0.00
March 31	72	35	0.01

April 2021 Belleville Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	54	28	0.00	0.0
April 2	46	24	0.00	0.0
April 3	55	33	0.00	0.0
April 4	66	50	0.00	0.0
April 5	78	49	0.00	0.0
April 6	80	56	0.00	0.0
April 7	81	59	0.00	0.0
April 8	78	50	1.06	0.0
April 9	58	49	0.02	0.0
April 10	82	50	0.15	0.0
April 11	63	47	0.23	0.0
April 12	69	40	0.00	0.0
April 13	70	40	0.02	0.0
April 14	64	47	0.00	0.0
April 15	63	36	0.00	0.0
April 16	60	39	0.00	0.0
April 17	60	46	0.01	0.0
April 18	60	42	0.00	0.0
April 19	67	41	0.00	0.0
April 20	71	34	0.00	0.0
April 21	45	29	0.30	0.5
April 22	53	30	0.00	0.0
April 23	57	41	0.01	0.0
April 24	61	44	0.06	0.0
April 25	57	42	0.45	0.0
April 26	66	41	0.00	0.0
April 27	73	58	0.00	0.0
April 28	84	65	0.01	0.0
April 29	71	63	0.71	0.0
April 30	71	48	0.00	0.0

May 2021 Belleville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	77	49	0.00
May 2	78	50	0.00
May 3	n/a	62	0.12
May 4	79	61	0.38
May 5	62	47	0.12
May 6	69	48	0.00
May 7	69	41	0.03
May 8	74	49	0.00
May 9	57	41	0.00
May 10	74	36	0.11
May 11	61	37	0.00
May 12	61	41	0.00
May 13	65	37	0.00
May 14	68	37	0.00
May 15	72	45	0.00
May 16	65	50	0.00
May 17	76	45	0.20
May 18	73	61	0.50
May 19	73	63	0.27
May 20	78	66	0.00
May 21	84	64	0.00
May 22	84	61	0.00
May 23	85	60	0.00
May 24	89	60	0.00
May 25	88	62	0.00
May 26	87	67	0.06
May 27	87	63	0.00
May 28	86	62	0.97
May 29	68	45	0.00
May 30	64	42	0.00
May 31	70	48	0.00

June 2021 Belleville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	77	48	0.05
June 2	68	61	0.02
June 3	73	62	0.00
June 4	88	57	0.00
June 5	85	60	0.00
June 6	86	66	0.00
June 7	84	60	0.00
June 8	84	65	0.00
June 9	80	69	0.86
June 10	85	69	0.00
June 11	90	69	0.00
June 12	94	70	0.00
June 13	95	65	0.00
June 14	90	61	0.00
June 15	94	57	0.00
June 16	87	61	0.00
June 17	87	60	0.00
June 18	97	75	0.00
June 19	99	73	0.00
June 20	90	74	0.00
June 21	92	70	0.03
June 22	73	48	0.00
June 23	80	55	0.00
June 24	88	65	0.00
June 25	83	72	0.00
June 26	88	72	0.44
June 27	90	72	1.15
June 28	90	76	0.91
June 29	91	71	0.00
June 30	93	70	0.00

July 2021 Belleville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	87	70	1.07
July 2	85	56	0.00
July 3	81	57	0.00
July 4	82	60	0.00
July 5	87	64	0.00
July 6	88	56	0.00
July 7	90	67	0.00
July 8	90	70	0.00
July 9	88	64	0.00
July 10	n/a	n/a	n/a
July 11	n/a	n/a	n/a
July 12	n/a	n/a	n/a
July 13	n/a	n/a	n/a
July 14	n/a	n/a	0.00
July 15	88	69	0.00
July 16	n/a	n/a	n/a
July 17	n/a	n/a	n/a
July 18	n/a	n/a	0.00
July 19	84	66	0.00
July 20	85	63	0.00
July 21	85	63	0.00
July 22	88	66	0.00
July 23	89	67	0.00
July 24	n/a	n/a	n/a
July 25	n/a	n/a	n/a
July 26	89	66	n/a
July 27	88	62	0.00
July 28	89	65	0.00
July 29	93	69	0.00
July 30	97	64	2.25
July 31	n/a	n/a	0.00

August 2021 Belleville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	n/a	n/a	n/a
August 2	85	59	n/a
August 3	79	57	0.00
August 4	82	55	0.00
August 5	83	58	0.00
August 6	83	65	0.00
August 7	85	66	0.00
August 8	88	69	0.00
August 9	89	71	0.45
August 10	91	74	0.05
August 11	92	71	0.15
August 12	92	73	0.00
August 13	93	66	0.76
August 14	89	63	0.00
August 15	84	60	0.00
August 16	81	60	0.00
August 17	84	63	0.00
August 18	88	64	0.00
August 19	81	64	0.00
August 20	88	67	0.00
August 21	89	71	0.03
August 22	88	68	0.00
August 23	90	66	0.00
August 24	93	67	0.04
August 25	93	72	0.00
August 26	94	74	0.00
August 27	93	68	0.00
August 28	n/a	n/a	n/a
August 29	n/a	n/a	n/a
August 30	93	72	n/a
August 31	88	67	0.44

September 2021 Belleville Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
September 1	85	67	0.43	n/a
September 2	83	55	0.00	n/a
September 3	80	55	0.00	n/a
September 4	77	63	0.00	n/a
September 5	77	59	0.50	n/a
September 6	81	57	0.00	n/a
September 7	87	60	0.00	n/a
September 8	87	57	0.00	n/a
September 9	82	53	0.00	n/a
September 10	80	52	0.00	n/a
September 11	83	65	0.00	n/a
September 12	88	66	0.00	n/a
September 13	87	60	0.00	n/a
September 14	89	67	0.00	n/a
September 15	91	57	0.97	n/a
September 16	82	54	0.00	n/a
September 17	85	60	0.00	n/a
September 18	88	64	0.00	n/a
September 19	90	63	0.00	n/a
September 20	85	71	0.00	n/a
September 21	87	67	0.94	n/a
September 22	68	56	0.10	n/a
September 23	72	40	0.00	n/a
September 24	72	45	0.00	n/a
September 25	80	48	0.00	n/a
September 26	75	46	0.00	n/a
September 27	82	46	0.00	n/a
September 28	90	59	0.00	n/a
September 29	91	57	0.00	n/a
September 30	88	60	0.00	n/a

October 2021 Belleville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	88	59	0.00
October 2	82	66	0.00
October 3	76	64	0.00
October 4	83	59	0.41
October 5	78	58	0.00
October 6	78	63	0.01
October 7	79	59	0.01
October 8	77	55	0.26
October 9	82	60	0.00
October 10	86	66	0.00
October 11	87	50	0.00
October 12	81	n/a	0.12
October 13	79	52	0.00
October 14	82	67	0.02
October 15	75	62	1.95
October 16	69	42	n/a
October 17	63	40	n/a
October 18	73	n/a	n/a
October 19	75	39	0.00
October 20	73	44	0.00
October 21	79	53	0.00
October 22	59	51	0.00
October 23	60	40	0.00
October 24	57	54	0.00
October 25	80	47	0.97
October 26	55	37	0.00
October 27	63	39	0.00
October 28	64	51	0.35
October 29	58	54	0.84
October 30	57	42	0.12
October 31	51	38	0.00

November 2021 Belleville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	60	37	0.00
November 2	51	36	0.00
November 3	51	29	0.00
November 4	54	26	0.00
November 5	54	26	0.00
November 6	55	26	0.00
November 7	60	31	0.00
November 8	67	36	0.00
November 9	68	45	0.00
November 10	65	50	0.00
November 11	67	54	0.27
November 12	60	38	0.00
November 13	52	31	0.00
November 14	38	28	0.08
November 15	50	26	0.00
November 16	60	33	0.00
November 17	71	n/a	0.00
November 18	71	34	0.07
November 19	50	21	0.00
November 20	45	37	0.00
November 21	59	36	0.00
November 22	58	21	0.00
November 23	49	22	0.00
November 24	49	40	0.00
November 25	61	25	0.33
November 26	56	19	0.00
November 27	58	30	0.00
November 28	58	25	0.00
November 29	49	19	0.00
November 30	55	34	0.00

December 2021 Belleville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	57	38	0.02
December 2	66	40	0.00
December 3	71	33	0.00
December 4	77	31	0.00
December 5	54	31	0.00
December 6	61	27	0.28
December 7	41	24	0.00
December 8	31	21	0.00
December 9	51	30	0.00
December 10	59	39	0.00
December 11	70	27	0.03
December 12	66	25	0.00
December 13	52	17	0.00
December 14	58	33	0.00
December 15	65	45	0.19
December 16	65	53	0.67
December 17	53	28	0.00
December 18	38	26	1.06
December 19	39	24	0.00
December 20	39	21	0.00
December 21	45	23	0.00
December 22	51	24	0.00
December 23	41	27	0.00
December 24	60	41	0.00
December 25	67	37	n/a
December 26	67	42	n/a
December 27	61	42	n/a
December 28	66	35	n/a
December 29	45	34	n/a
December 30	44	42	n/a
December 31	51	44	0.00

Next Year >

Weather Station Details

Years	Station	Coordinates
1948–2024	Belleville SIU Research	location