Weather Averages for Altona, IL

7-day Forecast / 10-day Forecast

Latitude: 41°10'N, Longitude: 90°3'W, Elevation: 860.0 ft, Distance: 6.79 mi Altona, IL Averages »

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 30 years	°F	48	19	23	36	49	60	70	74	71	64	52	38	24
Average high temperature over 30 years	°F	59	28	32	45	60	71	81	85	82	75	63	47	32
Average low temperature over 30 years	°F	38	10	14	26	38	49	59	63	60	52	41	29	16
Highest recorded temperature over 110 years	°F	111	66	69	86	93	105	105	111	105	100	93	82	68
Lowest recorded temperature over 110 years	°F	-27	-23	-27	-11	8	24	34	44	37	23	8	-7	-25
Average number of days above 90°F over 30 years	days	25	-	-	-	0.1	0.8	4.9	9.4	7	2.8	0.1	-	-
Average precipitation over 30 years	in	37.4	1.5	1.2	2.8	4.1	3.9	4.2	4.2	3.9	4.1	2.8	2.6	2.3
Average number of days below 32°F over 30 years	days	131	28	24	21	7.8	0.6	-	-	-	0.3	4.8	18	26
Average number of days below 0°F over 30 years	days	13	5.8	3.7	0.3	-	-	-	-	-	-	-	0.1	2.9
Average snowfall over 30 years	in	29.4	7.9	6.6	4.7	1.8	-	-	-	-	-	0.3	2.1	6.5
Most rain reported in a day over 110 years	in	9.2	2.6	2.1	2.6	3.0	3.0	4.3	6.1	9.2	3.6	3.8	3.1	2.7
Most rain reported in a month over 110 years	in	52.1	5.1	3.7	5.8	9.1	9.3	10.9	12.5	12.5	11.4	13.0	7.9	5.2
Least rain reported in a month over 110 years	in	19.4	0.1	-	0.2	0.7	0.5	0.4	0.3	0.7	0.3	0.1	-	0.1
Heating degree days over 30 years	days	6572	1392	1120	876	460	182	23	5	11	106	396	765	1236
Cooling degree days over 30 years	days	889	-	-	1	9	60	189	296	225	95	14	-	-
Most snow reported in a month over 110 years	in	51.6	33.5	22.1	21.4	14.5	-	-	-	-	1.5	6.1	9.0	18.0

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