Rockford Weather in 1999

Historical record of Rockford, Illinois weather for the year 1999 based on NOAA data.

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1999 Rockford Weather Extremes
Highest temperature	97 °F	July 30
Lowest temperature	-21 °F	January 5
Highest daily low	77 °F	July 30
Lowest daily high	1 °F	January 4
Most daily precipitation	2.2 inches	September 28
Most daily snow	6.0 inches	January 3
Total annual precipitation	37.8 inches	-
Total annual snow	30.5 inches	-

What was the hottest temperature in Rockford in 1999?

The highest temperature recorded in Rockford, Illinois in 1999 was 97 °F which happened on July 30.

Highest Temperatures: All-Time By Year

Highest Temperatures in Rockford in 1999

Rank	Temperature	Date
1	97 °F	Jul 30
2	95 °F	Jul 29
3	93 °F	Jul 25
3	93 °F	Jul 23
3	93 °F	Jul 16
6	92 °F	Jul 24
6	92 °F	Jul 5
6	92 °F	Jul 4
9	91 °F	Sep 4
9	91 °F	Jul 22
9	91 °F	Jul 21
9	91 °F	Jun 8
9	91 °F	Jun 6

What was the coldest temperature in Rockford in 1999?

The lowest temperature recorded in Rockford, Illinois in 1999 was -21 °F which happened on Jan 5.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Rockford in 1999

Rank	Temperature	Date
1	-21 °F	January 5
2	-18 °F	January 7
3	-15 °F	January 4
4	-10 °F	January 9
5	-5 °F	January 11
6	-4 °F	January 10
6	-4 °F	January 6
8	-3 °F	December 23
8	-3 °F	December 21
10	0 °F	December 24
10	0 °F	December 18

January 1999 Rockford Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	19	4	0.00	0.0
January 2	22	14	0.30	3.0
January 3	14	1	0.33	6.0
January 4	1	-15	0.00	0.0
January 5	14	-21	0.03	1.0
January 6	17	-4	0.02	0.2
January 7	4	-18	0.00	0.0
January 8	16	4	0.06	0.8
January 9	8	-10	0.00	0.0
January 10	11	-4	0.01	0.4
January 11	8	-5	0.19	1.7
January 12	15	6	0.00	0.0
January 13	20	5	0.00	0.1
January 14	17	14	0.01	0.5
January 15	29	15	0.00	0.0
January 16	37	17	0.00	0.0
January 17	37	11	0.40	0.0
January 18	35	19	0.03	0.3
January 19	32	15	0.00	0.0
January 20	30	25	0.00	0.0
January 21	36	28	0.81	0.0
January 22	37	34	0.23	0.0
January 23	34	32	0.68	0.3
January 24	33	28	0.01	0.0
January 25	32	16	0.00	0.0
January 26	36	15	0.00	0.0
January 27	43	31	0.00	0.0
January 28	32	29	0.00	0.0
January 29	35	22	0.00	0.0
January 30	43	19	0.00	0.0
January 31	39	30	0.00	0.0

February 1999 Rockford Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	40	34	0.03	0.0
February 2	41	33	0.17	0.0
February 3	43	34	0.00	0.0
February 4	39	18	0.00	0.0
February 5	40	19	0.12	0.0
February 6	44	29	0.00	0.0
February 7	38	26	0.00	0.0
February 8	45	24	0.00	0.0
February 9	52	29	0.00	0.0
February 10	56	29	0.00	0.0
February 11	67	25	0.47	0.0
February 12	29	13	0.01	0.3
February 13	32	13	0.00	0.0
February 14	46	20	0.00	0.0
February 15	55	29	0.00	0.0
February 16	38	29	0.06	0.0
February 17	34	19	0.00	0.0
February 18	39	19	0.00	0.0
February 19	32	26	0.00	0.0
February 20	30	18	0.00	0.0
February 21	35	16	0.00	0.0
February 22	32	13	0.00	0.0
February 23	35	24	0.00	0.0
February 24	32	18	0.04	0.5
February 25	34	22	0.00	0.0
February 26	46	25	0.11	0.0
February 27	48	37	0.14	0.0
February 28	40	33	0.02	0.0

March 1999 Rockford Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	43	28	0.00	0.0
March 2	40	32	0.22	0.0
March 3	35	23	0.00	0.0
March 4	35	18	0.00	0.0
March 5	40	29	0.23	2.6
March 6	29	8	0.07	1.0
March 7	26	4	0.00	0.0
March 8	30	18	0.33	4.6
March 9	31	25	0.21	2.2
March 10	33	17	0.00	0.0
March 11	34	20	0.00	0.0
March 12	37	15	0.00	0.0
March 13	38	21	0.00	0.0
March 14	40	23	0.00	0.0
March 15	41	19	0.00	0.0
March 16	52	29	0.00	0.0
March 17	58	36	0.00	0.0
March 18	47	29	0.00	0.0
March 19	48	25	0.00	0.0
March 20	54	24	0.00	0.0
March 21	48	30	0.00	0.0
March 22	47	22	0.00	0.0
March 23	54	22	0.00	0.0
March 24	45	27	0.00	0.0
March 25	41	25	0.00	0.0
March 26	50	20	0.00	0.0
March 27	58	25	0.00	0.0
March 28	54	31	0.08	0.0
March 29	62	30	0.00	0.0
March 30	73	34	0.00	0.0
March 31	73	42	0.00	0.0

April 1999 Rockford Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	65	52	0.00
April 2	76	50	0.00
April 3	73	50	0.09
April 4	61	42	0.14
April 5	60	42	0.13
April 6	60	39	0.01
April 7	77	34	0.00
April 8	67	39	0.74
April 9	51	38	0.42
April 10	56	35	0.04
April 11	52	40	0.00
April 12	53	34	0.00
April 13	61	32	0.00
April 14	63	35	0.00
April 15	49	43	1.21
April 16	57	40	0.64
April 17	52	41	0.00
April 18	50	35	0.01
April 19	57	30	0.00
April 20	53	33	0.21
April 21	59	42	0.74
April 22	53	44	1.16
April 23	55	36	0.82
April 24	58	33	0.00
April 25	63	34	0.00
April 26	68	41	0.00
April 27	55	46	1.40
April 28	62	44	0.01
April 29	65	43	0.00
April 30	67	37	0.00

May 1999 Rockford Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	73	38	0.00
May 2	74	39	0.00
May 3	78	52	0.00
May 4	81	56	0.02
May 5	79	60	0.02
May 6	63	50	1.03
May 7	55	50	0.04
May 8	56	48	0.00
May 9	65	45	0.00
May 10	79	43	0.00
May 11	81	57	0.41
May 12	73	50	0.73
May 13	57	48	0.03
May 14	69	41	0.00
May 15	68	51	0.01
May 16	81	58	0.22
May 17	73	60	0.34
May 18	68	48	0.20
May 19	73	44	0.00
May 20	79	52	0.00
May 21	73	56	0.29
May 22	74	55	0.02
May 23	72	51	0.00
May 24	57	48	0.00
May 25	67	43	0.00
May 26	73	48	0.00
May 27	80	44	0.00
May 28	86	55	0.00
May 29	87	57	0.00
May 30	87	56	0.00
May 31	79	62	0.00

June 1999 Rockford Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	77	56	1.29
June 2	71	56	0.02
June 3	72	53	0.00
June 4	74	51	0.23
June 5	89	60	0.00
June 6	91	68	0.69
June 7	85	67	0.01
June 8	91	64	0.00
June 9	89	64	0.00
June 10	90	68	0.16
June 11	89	66	0.83
June 12	77	67	0.05
June 13	72	64	1.69
June 14	72	54	0.01
June 15	65	48	0.00
June 16	69	50	0.00
June 17	69	46	0.00
June 18	73	47	0.00
June 19	77	59	0.00
June 20	80	53	0.00
June 21	82	60	0.00
June 22	86	65	0.40
June 23	80	68	0.11
June 24	87	66	0.00
June 25	88	64	0.00
June 26	83	64	0.00
June 27	86	67	0.00
June 28	85	63	0.03
June 29	72	53	0.00
June 30	79	59	0.22

July 1999 Rockford Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	78	64	0.28
July 2	81	63	0.00
July 3	88	73	0.13
July 4	92	76	0.00
July 5	92	76	0.00
July 6	84	62	0.00
July 7	85	57	0.00
July 8	86	59	0.00
July 9	85	66	0.25
July 10	77	57	0.00
July 11	81	53	0.00
July 12	83	56	0.00
July 13	82	57	0.00
July 14	87	61	0.00
July 15	90	63	0.00
July 16	93	67	0.00
July 17	81	67	1.24
July 18	85	63	0.00
July 19	86	69	0.20
July 20	82	68	0.03
July 21	91	71	0.21
July 22	91	72	0.00
July 23	93	71	0.25
July 24	92	67	0.00
July 25	93	73	0.00
July 26	87	72	0.41
July 27	87	73	0.00
July 28	89	71	0.20
July 29	95	69	0.00
July 30	97	77	0.00
July 31	85	70	0.21

August 1999 Rockford Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	80	64	0.00
August 2	80	61	0.00
August 3	82	57	0.00
August 4	82	62	0.00
August 5	81	58	0.00
August 6	86	59	0.00
August 7	75	65	0.31
August 8	74	57	0.00
August 9	75	50	0.12
August 10	86	65	0.00
August 11	83	61	0.00
August 12	79	65	0.48
August 13	73	59	0.06
August 14	76	53	0.00
August 15	78	50	0.00
August 16	83	56	0.02
August 17	85	62	0.00
August 18	70	59	0.10
August 19	76	59	0.00
August 20	79	51	0.00
August 21	78	52	0.00
August 22	78	54	0.00
August 23	73	62	0.87
August 24	75	60	1.23
August 25	80	62	0.00
August 26	84	57	0.00
August 27	85	59	0.00
August 28	90	67	0.00
August 29	78	55	0.00
August 30	72	54	0.00
August 31	77	52	0.00

September 1999 Rockford Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	83	50	0.00
September 2	90	57	0.00
September 3	88	65	0.00
September 4	91	64	0.00
September 5	87	62	0.00
September 6	75	51	0.00
September 7	82	48	0.00
September 8	81	55	0.01
September 9	66	46	0.00
September 10	74	43	0.00
September 11	82	42	0.00
September 12	74	50	0.13
September 13	65	47	0.00
September 14	70	43	0.00
September 15	67	38	0.00
September 16	72	43	0.00
September 17	74	38	0.00
September 18	77	43	0.00
September 19	81	49	0.86
September 20	62	46	0.00
September 21	61	40	0.00
September 22	73	36	0.00
September 23	83	45	0.00
September 24	68	46	0.00
September 25	83	45	0.00
September 26	83	59	0.14
September 27	66	52	2.00
September 28	55	51	2.15
September 29	64	40	0.00
September 30	69	38	0.00

October 1999 Rockford Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	60	39	0.04
October 2	52	36	0.00
October 3	43	37	0.54
October 4	55	33	0.00
October 5	65	35	0.00
October 6	61	38	0.00
October 7	74	43	0.00
October 8	72	48	0.00
October 9	73	40	0.00
October 10	77	48	0.00
October 11	69	39	0.00
October 12	75	47	0.00
October 13	68	35	0.05
October 14	61	30	0.00
October 15	81	45	0.06
October 16	65	45	0.27
October 17	52	33	0.00
October 18	53	28	0.00
October 19	58	39	0.00
October 20	51	33	0.00
October 21	67	33	0.00
October 22	57	37	0.00
October 23	48	29	0.00
October 24	51	22	0.00
October 25	68	30	0.00
October 26	61	36	0.00
October 27	63	34	0.00
October 28	74	45	0.00
October 29	77	44	0.00
October 30	72	51	0.00
October 31	68	40	0.00

November 1999 Rockford Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	70	41	0.00
November 2	45	30	0.00
November 3	48	24	0.00
November 4	65	24	0.00
November 5	64	37	0.00
November 6	55	28	0.00
November 7	59	28	0.00
November 8	75	36	0.00
November 9	74	50	0.00
November 10	65	42	0.00
November 11	47	34	0.00
November 12	60	31	0.00
November 13	72	31	0.00
November 14	56	29	0.00
November 15	50	23	0.00
November 16	47	29	0.00
November 17	50	27	0.00
November 18	70	38	0.00
November 19	56	38	0.03
November 20	53	33	0.00
November 21	54	31	0.00
November 22	62	37	0.00
November 23	62	39	0.60
November 24	47	30	0.00
November 25	47	23	0.00
November 26	46	23	0.08
November 27	47	28	0.00
November 28	45	23	0.00
November 29	37	20	0.00
November 30	39	16	0.00

December 1999 Rockford Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	43	25	0.00	0.0
December 2	56	40	0.00	0.0
December 3	57	40	0.24	0.0
December 4	47	41	0.53	0.0
December 5	42	30	0.54	1.3
December 6	32	19	0.00	0.0
December 7	40	25	0.00	0.0
December 8	47	28	0.00	0.0
December 9	45	33	0.18	0.0
December 10	35	21	0.00	0.0
December 11	38	20	0.00	0.0
December 12	41	23	0.00	0.0
December 13	39	24	0.00	0.0
December 14	38	28	0.00	0.0
December 15	36	31	0.06	0.0
December 16	31	17	0.03	0.2
December 17	24	9	0.14	1.4
December 18	22	0	0.00	0.0
December 19	35	10	0.04	0.0
December 20	34	2	0.01	0.1
December 21	11	-3	0.00	0.0
December 22	15	7	0.00	0.0
December 23	16	-3	0.12	1.3
December 24	15	0	0.00	0.0
December 25	32	7	0.00	0.0
December 26	34	20	0.01	0.2
December 27	22	3	0.04	0.5
December 28	31	8	0.00	0.0
December 29	46	23	0.00	0.0
December 30	39	23	0.00	0.0
December 31	40	25	0.00	0.0

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Weather Station Details

Years	Station	Coordinates
1951–2024	Greater Rockford Airport	location
1893–1950	Rockford	location