Naperville, Illinois Weather Forecast

Local

Naperville, IL, US

41.78586, -88.14729

Normals for December

	Temp ( °F °C )			Precip ( " mm )		Degree Days
	Min	Max	Avg	MTD	YTD	Heating	Cooling
1	25 -4	42 5	33 1	0.07 undefined	37.93 undefined	31.7	0
2	25 -4	41 5	33 1	0.14 undefined	38 undefined	32	0
3	25 -4	41 5	33 0	0.21 undefined	38.07 undefined	32.4	0
4	24 -4	40 5	32 0	0.28 undefined	38.14 undefined	32.7	0
5	24 -5	40 4	32 0	0.35 undefined	38.21 undefined	33.1	0
6	24 -5	40 4	32 0	0.42 undefined	38.28 undefined	33.4	0
7	23 -5	39 4	31 0	0.49 undefined	38.35 undefined	33.8	0
8	23 -5	39 4	31 -1	0.55 undefined	38.41 undefined	34.1	0
9	23 -5	39 4	31 -1	0.62 undefined	38.48 undefined	34.4	0
10	22 -5	38 3	30 -1	0.68 undefined	38.54 undefined	34.8	0
11	22 -6	38 3	30 -1	0.75 undefined	38.61 undefined	35.1	0
12	22 -6	38 3	30 -1	0.83 undefined	38.69 undefined	35.4	0
13	21 -6	37 3	29 -1	0.9 undefined	38.76 undefined	35.7	0
14	21 -6	37 3	29 -2	0.99 undefined	38.85 undefined	36	0
15	21 -6	37 3	29 -2	1.07 undefined	38.93 undefined	36.3	0
16	21 -6	36 2	28 -2	1.16 undefined	39.02 undefined	36.6	0
17	20 -7	36 2	28 -2	1.24 undefined	39.1 undefined	36.9	0
18	20 -7	36 2	28 -2	1.32 undefined	39.18 undefined	37.2	0
19	20 -7	35 2	28 -2	1.4 undefined	39.26 undefined	37.5	0
20	19 -7	35 2	27 -3	1.49 undefined	39.35 undefined	37.8	0
21	19 -7	35 2	27 -3	1.57 undefined	39.43 undefined	38	0
22	19 -7	35 1	27 -3	1.65 undefined	39.51 undefined	38.3	0
23	19 -7	34 1	27 -3	1.73 undefined	39.59 undefined	38.5	0
24	18 -8	34 1	26 -3	1.81 undefined	39.67 undefined	38.8	0
25	18 -8	34 1	26 -3	1.88 undefined	39.74 undefined	39	0
26	18 -8	34 1	26 -3	1.96 undefined	39.82 undefined	39.3	0
27	18 -8	34 1	26 -4	2.02 undefined	39.88 undefined	39.5	0
28	17 -8	33 1	25 -4	2.1 undefined	39.96 undefined	39.7	0
29	17 -8	33 1	25 -4	2.17 undefined	40.03 undefined	39.9	0
30	17 -8	33 1	25 -4	2.25 undefined	40.11 undefined	40.1	0
31	17 -9	33 0	25 -4	2.32 undefined	40.18 undefined	40.3	0