Rockford, Illinois
Climate

Rockford, Illinois

Section Title: Climate
Table Section Text: None

Climate data for Rockford, Illinois (Chicago Rockford International Airport), 1981−2010 normals & extremes

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year

Record high °F (°C)	63 (17)	70 (21)	85 (29)	93 (34)	106 (41)	106 (41)	112 (44)	104 (40)	103 (39)	91 (33)	81 (27)	69 (21)	112 (44)

Mean maximum °F (°C)	48.9 (9.4)	53.1 (11.7)	71.3 (21.8)	81.6 (27.6)	86.8 (30.4)	92.6 (33.7)	93.6 (34.2)	92.7 (33.7)	89.1 (31.7)	81.1 (27.3)	66.8 (19.3)	51.8 (11.0)	95.7 (35.4)

Average high °F (°C)	29.5 (−1.4)	34.2 (1.2)	46.9 (8.3)	60.7 (15.9)	71.8 (22.1)	81.1 (27.3)	84.5 (29.2)	82.4 (28.0)	75.4 (24.1)	62.7 (17.1)	47.6 (8.7)	33.2 (0.7)	59.3 (15.2)

Average low °F (°C)	13.5 (−10.3)	17.7 (−7.9)	27.5 (−2.5)	38.1 (3.4)	48.4 (9.1)	58.5 (14.7)	63.0 (17.2)	61.3 (16.3)	52.4 (11.3)	40.7 (4.8)	30.3 (−0.9)	17.7 (−7.9)	39.2 (4.0)

Mean minimum °F (°C)	−10.6 (−23.7)	−4.4 (−20.2)	8.8 (−12.9)	21.6 (−5.8)	33.6 (0.9)	44.8 (7.1)	51.5 (10.8)	49.9 (9.9)	36.0 (2.2)	25.4 (−3.7)	13.7 (−10.2)	−4.5 (−20.3)	−15.3 (−26.3)

Record low °F (°C)	−31 (−35)	−25 (−32)	−11 (−24)	5 (−15)	24 (−4)	35 (2)	43 (6)	35 (2)	24 (−4)	7 (−14)	−10 (−23)	−24 (−31)	−31 (−35)

Average precipitation inches (mm)	1.37 (35)	1.41 (36)	2.32 (59)	3.35 (85)	4.02 (102)	4.65 (118)	3.95 (100)	4.59 (117)	3.35 (85)	2.67 (68)	2.58 (66)	1.98 (50)	36.24 (921)

Average snowfall inches (cm)	10.2 (26)	7.7 (20)	4.8 (12)	0.9 (2.3)	trace	0 (0)	0 (0)	0 (0)	0 (0)	0.1 (0.25)	1.7 (4.3)	11.3 (29)	36.7 (93)

Average precipitation days (≥ 0.01 in)	9.4	8.2	10.5	11.3	12.2	10.4	9.4	9.7	8.3	9.4	10.2	10.2	119.2

Average snowy days (≥ 0.1 in)	8.2	5.8	4.1	1.0	0	0	0	0	0	0.1	1.8	7.7	28.7

Source: NOAA (extremes 1893–present)

Sentence(s)

The average high temperature in January, the coldest month, is 29.5 °F (−1.4 °C).

final_sentence: The average high temperature in January, the coldest month, is 29.5 °F (−1.4 °C).