Janesville Weather in 2009

Historical record of Janesville, Wisconsin weather for the year 2009 based on NOAA data.

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2009 Janesville Weather Extremes
Highest temperature	96 °F	June 24
Lowest temperature	-24 °F	January 17
Highest daily low	70 °F	August 17
Lowest daily high	-4 °F	January 16
Most daily precipitation	2.7 inches	March 25
Most daily snow	11.2 inches	December 9
Total annual precipitation	44.6 inches	-
Total annual snow	45.1 inches	-

What was the hottest temperature in Janesville in 2009?

The highest temperature recorded in Janesville, Wisconsin in 2009 was 96 °F which happened on June 24.

Highest Temperatures: All-Time By Year

Highest Temperatures in Janesville in 2009

Rank	Temperature	Date
1	96 °F	Jun 24
2	92 °F	Jun 25
3	91 °F	Jun 26
3	91 °F	Jun 23
5	89 °F	Jun 28
6	88 °F	Jun 27
7	87 °F	Aug 16
7	87 °F	Aug 9
7	87 °F	Jun 21
10	85 °F	Aug 15
10	85 °F	Aug 10
10	85 °F	Aug 5
10	85 °F	Aug 4
10	85 °F	Jul 7
10	85 °F	Jun 22

What was the coldest temperature in Janesville in 2009?

The lowest temperature recorded in Janesville, Wisconsin in 2009 was -24 °F which happened 2 different times.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Janesville in 2009

Rank	Temperature	Date
1	-24 °F	January 17
1	-24 °F	January 16
3	-17 °F	January 15
4	-5 °F	January 25
4	-5 °F	January 24
4	-5 °F	January 14
7	-4 °F	December 11
7	-4 °F	December 10
9	-3 °F	February 5
9	-3 °F	February 4
9	-3 °F	January 26

January 2009 Janesville Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	20	3	0.00	0.0
January 2	29	19	0.00	0.0
January 3	22	12	0.00	0.0
January 4	34	19	0.21	0.0
January 5	33	7	0.00	0.0
January 6	29	7	0.00	0.0
January 7	30	20	0.00	0.0
January 8	25	11	0.02	0.3
January 9	21	10	0.12	2.4
January 10	25	14	0.37	7.0
January 11	21	7	0.03	0.5
January 12	19	2	0.01	0.0
January 13	22	-2	0.12	1.0
January 14	6	-5	0.10	1.3
January 15	8	-17	0.04	1.5
January 16	-4	-24	0.00	0.0
January 17	13	-24	0.02	0.3
January 18	23	3	0.01	0.1
January 19	16	3	0.01	0.2
January 20	20	4	0.05	1.5
January 21	19	4	0.00	0.0
January 22	24	8	0.00	0.0
January 23	34	8	0.00	0.0
January 24	28	-5	0.00	0.0
January 25	7	-5	0.00	n/a
January 26	12	-3	0.00	0.0
January 27	14	-2	0.00	0.0
January 28	13	-2	0.00	0.0
January 29	25	-2	0.00	0.0
January 30	28	2	0.00	0.0
January 31	18	1	0.00	0.0

February 2009 Janesville Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	39	17	0.00	0.0
February 2	37	17	0.00	0.0
February 3	25	-1	0.01	0.3
February 4	15	-3	0.00	0.0
February 5	15	-3	0.00	0.0
February 6	29	5	0.00	0.0
February 7	46	7	0.00	0.0
February 8	50	31	0.00	0.0
February 9	40	28	0.00	0.0
February 10	52	31	0.10	0.0
February 11	57	35	0.02	0.0
February 12	41	31	0.16	0.0
February 13	40	26	0.00	0.0
February 14	32	20	0.08	1.2
February 15	34	14	0.00	0.0
February 16	27	11	0.00	0.0
February 17	32	11	0.00	0.0
February 18	43	26	0.08	0.0
February 19	34	8	0.03	0.3
February 20	24	7	0.00	0.0
February 21	29	10	0.23	3.4
February 22	26	9	0.13	2.0
February 23	24	0	0.00	0.0
February 24	25	1	0.00	0.0
February 25	39	20	0.00	0.0
February 26	48	28	0.00	0.0
February 27	39	20	0.90	0.0
February 28	39	12	0.00	0.0

March 2009 Janesville Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	26	12	0.00	0.0
March 2	19	9	0.00	0.0
March 3	26	8	0.00	0.0
March 4	30	10	0.00	0.0
March 5	45	27	0.00	0.0
March 6	63	33	0.00	0.0
March 7	60	32	0.02	0.0
March 8	40	35	0.56	0.0
March 9	38	29	1.02	0.0
March 10	46	29	0.42	0.0
March 11	58	13	0.02	0.0
March 12	27	9	0.00	0.0
March 13	27	9	0.00	0.0
March 14	40	18	0.00	0.0
March 15	52	21	0.00	0.0
March 16	60	26	0.00	0.0
March 17	66	32	0.00	0.0
March 18	73	40	0.00	0.0
March 19	58	29	0.00	0.0
March 20	46	20	0.00	0.0
March 21	46	20	0.00	0.0
March 22	64	31	0.00	0.0
March 23	63	31	0.08	0.0
March 24	50	38	0.36	0.0
March 25	61	37	2.67	0.0
March 26	40	33	0.00	0.0
March 27	55	29	0.00	0.0
March 28	42	28	0.00	0.0
March 29	37	28	0.59	0.9
March 30	44	24	0.00	0.0
March 31	47	24	0.06	0.0

April 2009 Janesville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	52	35	0.45
April 2	51	35	0.00
April 3	50	34	0.02
April 4	49	28	0.00
April 5	52	30	0.02
April 6	39	30	0.00
April 7	46	28	0.00
April 8	50	28	0.00
April 9	55	28	0.00
April 10	58	29	0.00
April 11	53	31	0.00
April 12	53	28	0.00
April 13	55	32	0.00
April 14	41	35	0.20
April 15	58	33	0.00
April 16	65	31	0.00
April 17	69	32	0.00
April 18	73	33	0.00
April 19	74	40	0.02
April 20	54	39	0.99
April 21	53	36	0.16
April 22	46	32	0.04
April 23	61	37	0.00
April 24	67	39	0.00
April 25	83	46	0.00
April 26	68	42	2.00
April 27	72	44	0.93
April 28	68	44	0.06
April 29	61	44	0.00
April 30	57	47	0.33

May 2009 Janesville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	69	48	0.23
May 2	60	44	0.00
May 3	65	39	0.00
May 4	70	41	0.00
May 5	68	46	0.00
May 6	71	52	0.00
May 7	72	54	0.55
May 8	74	48	0.00
May 9	76	50	0.32
May 10	60	40	0.00
May 11	63	43	0.00
May 12	64	40	0.00
May 13	71	46	0.27
May 14	68	50	1.00
May 15	65	51	0.00
May 16	61	54	0.00
May 17	60	36	0.00
May 18	64	39	0.00
May 19	65	47	0.00
May 20	82	55	0.00
May 21	83	59	0.00
May 22	83	60	0.00
May 23	73	53	0.00
May 24	81	57	0.00
May 25	76	52	0.00
May 26	71	54	0.00
May 27	75	55	0.57
May 28	58	52	0.09
May 29	67	53	0.00
May 30	74	48	0.01
May 31	76	42	0.01

June 2009 Janesville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	75	52	0.30
June 2	80	48	0.01
June 3	62	48	0.01
June 4	68	43	0.00
June 5	73	46	0.00
June 6	79	53	0.00
June 7	62	52	0.03
June 8	74	52	0.44
June 9	78	53	0.22
June 10	69	53	0.00
June 11	75	54	0.00
June 12	74	51	0.00
June 13	78	55	0.55
June 14	71	52	0.04
June 15	80	51	n/a
June 16	83	60	0.00
June 17	74	61	0.02
June 18	78	62	0.06
June 19	82	64	1.87
June 20	83	65	0.93
June 21	87	67	0.00
June 22	85	67	0.01
June 23	91	68	0.00
June 24	96	67	0.00
June 25	92	70	0.00
June 26	91	65	0.00
June 27	88	61	0.00
June 28	89	65	0.02
June 29	80	62	0.00
June 30	75	58	0.01

July 2009 Janesville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	65	55	0.01
July 2	64	53	0.00
July 3	70	57	0.00
July 4	78	61	0.00
July 5	75	56	0.02
July 6	84	55	0.00
July 7	85	56	0.00
July 8	79	60	0.00
July 9	69	53	0.27
July 10	78	60	0.12
July 11	81	64	0.45
July 12	83	51	0.00
July 13	81	57	0.00
July 14	81	56	0.00
July 15	77	60	0.46
July 16	82	58	0.00
July 17	77	52	0.00
July 18	66	53	0.10
July 19	68	56	0.00
July 20	74	50	0.00
July 21	78	55	0.00
July 22	75	62	0.72
July 23	76	56	0.18
July 24	79	56	0.12
July 25	79	59	0.47
July 26	78	60	0.00
July 27	81	59	0.00
July 28	83	63	0.01
July 29	81	53	0.00
July 30	n/a	n/a	0.00
July 31	73	52	0.38

August 2009 Janesville Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
August 1	78	55	0.00	0.0
August 2	77	53	0.00	0.0
August 3	78	55	0.00	0.0
August 4	85	61	0.00	0.0
August 5	85	55	0.00	0.0
August 6	79	53	0.00	0.0
August 7	80	56	0.00	0.0
August 8	70	64	0.60	0.0
August 9	87	70	1.17	0.0
August 10	85	65	2.03	0.0
August 11	80	66	0.02	0.0
August 12	81	58	0.00	0.0
August 13	83	59	0.00	0.0
August 14	83	60	0.01	0.0
August 15	85	62	0.00	0.0
August 16	87	64	0.00	0.0
August 17	80	70	0.00	0.0
August 18	81	64	0.13	0.0
August 19	77	55	0.00	0.0
August 20	80	57	0.36	0.0
August 21	76	60	0.06	0.0
August 22	67	52	0.07	0.0
August 23	72	49	0.00	0.0
August 24	76	51	0.00	0.0
August 25	78	54	0.00	0.0
August 26	82	59	1.19	0.0
August 27	74	58	0.52	0.0
August 28	n/a	57	0.86	n/a
August 29	74	55	0.18	0.0
August 30	64	48	0.01	0.0
August 31	67	43	0.00	0.0

September 2009 Janesville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	70	40	0.00
September 2	73	43	0.00
September 3	74	45	0.00
September 4	76	47	0.00
September 5	78	48	0.00
September 6	78	49	0.00
September 7	76	53	0.00
September 8	79	52	0.00
September 9	78	53	0.00
September 10	79	56	0.00
September 11	82	56	0.00
September 12	81	52	0.00
September 13	81	50	0.00
September 14	83	50	0.00
September 15	84	53	0.00
September 16	83	57	0.00
September 17	72	47	0.00
September 18	74	46	0.00
September 19	79	47	0.00
September 20	77	53	0.00
September 21	75	55	0.52
September 22	71	58	0.00
September 23	75	62	1.23
September 24	76	58	0.00
September 25	74	58	0.01
September 26	73	57	0.17
September 27	69	51	0.00
September 28	73	49	0.16
September 29	59	44	0.02
September 30	60	39	0.00

October 2009 Janesville Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	62	39	0.00
October 2	56	42	0.95
October 3	52	45	0.13
October 4	58	45	0.04
October 5	57	46	0.00
October 6	62	46	0.16
October 7	60	45	0.24
October 8	60	43	0.00
October 9	52	44	0.20
October 10	49	28	0.03
October 11	43	25	0.02
October 12	46	25	0.00
October 13	48	30	0.00
October 14	49	30	0.01
October 15	49	39	0.16
October 16	41	37	0.13
October 17	46	32	0.01
October 18	51	29	0.00
October 19	56	29	0.00
October 20	65	43	0.00
October 21	58	47	0.01
October 22	72	45	0.22
October 23	47	43	1.59
October 24	52	37	0.21
October 25	53	38	0.01
October 26	64	44	0.32
October 27	51	35	0.27
October 28	55	34	0.01
October 29	57	46	0.00
October 30	64	49	0.56
October 31	66	39	0.08

November 2009 Janesville Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	46	31	0.00	0.0
November 2	60	32	0.07	0.0
November 3	56	28	0.00	0.0
November 4	47	29	0.01	0.0
November 5	52	30	0.00	0.0
November 6	54	30	0.00	0.0
November 7	64	45	0.00	0.0
November 8	71	37	0.00	0.0
November 9	72	37	0.00	0.0
November 10	65	37	0.00	0.0
November 11	57	28	0.00	0.0
November 12	56	28	0.00	0.0
November 13	55	29	0.00	0.0
November 14	55	38	0.00	0.0
November 15	58	34	0.00	0.0
November 16	45	33	0.00	0.0
November 17	48	38	0.00	0.0
November 18	48	39	0.01	0.0
November 19	45	39	0.14	0.0
November 20	46	37	0.00	0.0
November 21	53	29	0.00	0.0
November 22	53	29	0.00	0.0
November 23	60	34	0.00	0.0
November 24	47	36	0.00	0.0
November 25	48	41	0.73	0.0
November 26	47	33	0.84	n/a
November 27	39	28	0.01	0.0
November 28	41	28	0.00	0.0
November 29	54	28	0.02	0.0
November 30	42	29	0.00	0.0

December 2009 Janesville Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	42	29	0.00	0.0
December 2	55	29	0.00	0.0
December 3	40	31	0.00	0.0
December 4	32	22	0.00	0.0
December 5	25	19	0.00	0.0
December 6	34	22	0.00	0.0
December 7	37	25	0.02	0.0
December 8	28	22	0.02	0.3
December 9	33	24	1.12	11.2
December 10	32	-4	0.11	1.1
December 11	8	-4	0.00	0.0
December 12	19	-1	0.00	0.0
December 13	33	1	0.03	0.0
December 14	35	32	0.03	0.0
December 15	35	8	0.00	0.0
December 16	14	-2	0.00	0.0
December 17	18	1	0.00	0.0
December 18	30	18	0.00	0.0
December 19	33	25	0.00	0.0
December 20	31	24	0.01	n/a
December 21	28	23	0.00	0.0
December 22	28	23	0.12	1.9
December 23	31	23	0.10	1.5
December 24	33	30	0.68	0.0
December 25	38	32	0.77	0.0
December 26	42	17	0.08	1.0
December 27	23	5	0.12	2.4
December 28	25	8	0.00	0.0
December 29	30	2	0.00	0.0
December 30	20	2	0.00	0.0
December 31	31	20	0.11	1.5

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Weather Station Details

Years	Station	Coordinates
1987–2024	Afton-Janesville WWTP	location
1893–1987	Janesville	location