Weather Averages Arlington Heights, IL

Weather Averages for
Arlington Heights, IL

Latitude: 42°5'N, Longitude: 87°50'W, Elevation: 653.0 ft, Distance: 7.74 mi

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 49 years	°F	50	23	26	37	48	59	69	73	73	64	53	39	28
Average high temperature over 49 years	°F	57	30	34	44	57	69	78	82	80	73	62	46	35
Average low temperature over 49 years	°F	41	15	19	28	39	48	59	64	62	55	44	33	21
Highest recorded temperature over 49 years	°F	104	66	71	86	91	93	104	104	102	100	87	78	69
Lowest recorded temperature over 49 years	°F	-23	-23	-16	-9	10	28	34	41	44	32	21	-5	-18
Average number of days above 90°F over 49 years	days	18	-	-	-	-	1	4	6	5	1	-	-	-
Average precipitation over 49 years	in	35.5	1.9	1.6	2.7	3.5	3.4	4.0	3.8	3.6	3.3	2.5	2.7	2.4
Average dew point over 40 years	°F	39	16	19	26	36	44	55	62	60	53	43	31	21
Most recorded rainfall over 49 years	in	47.5	5.1	4.4	5.3	6.3	8.3	8.2	11.1	13.6	13.9	9.1	7.1	6.0
Least recorded rainfall over 49 years	in	20.5	0.3	0.2	0.4	1.0	0.6	0.7	0.1	0.5	-	0.2	0.5	0.4
Average number of days with thunderstorms over 40 years	days	35	-	-	2	4	4	7	6	6	4	1	1	-
Average number of days with fog over 40 years	days	147	13	11	13	10	11	11	12	15	13	12	12	14
Average morning relative humidity over 41 years	%	76	77	77	77	72	69	71	74	78	79	79	79	79
Average evening relative humidity over 40 years	%	61	69	66	61	56	53	55	56	57	58	58	66	70
Average wind speed over 40 years	mph	10.0	10.0	10.0	10.0	13.0	12.0	9.0	8.0	8.0	9.0	10.0	11.0	10.0
Average number of days below 32°F over 49 years	days	124	29	25	21	6	-	-	-	-	-	3	15	26
Average number of days above 65°F over 49 years	days	160	-	-	3	9	19	27	31	31	25	13	2	-

Check weather averages for nearby locations (some locations might offer more data):

Latitude: 42°0'N, Longitude: 87°54'W, Elevation: 658.0 ft, Distance: 8.75 mi

Latitude: 41°59'N, Longitude: 87°54'W, Elevation: 674.0 ft, Distance: 9.78 mi

Latitude: 42°20'N, Longitude: 87°52'W, Elevation: 700.0 ft, Distance: 16.34 mi

Latitude: 41°49'N, Longitude: 88°4'W, Elevation: 680.0 ft, Distance: 20.90 mi

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