Reston, Virginia Weather Forecast

Local

Reston, VA, US

38.96872, -77.3411

Normals for December

	Temp ( °F °C )			Precip ( " mm )		Degree Days
	Min	Max	Avg	MTD	YTD	Heating	Cooling
1	31 -1	51 10	41 5	0.11 undefined	40.25 undefined	24.3	0
2	31 -1	50 10	40 5	0.23 undefined	40.37 undefined	24.6	0
3	31 -1	50 10	40 5	0.34 undefined	40.48 undefined	24.9	0
4	30 -1	50 10	40 4	0.46 undefined	40.6 undefined	25.1	0
5	30 -1	49 10	40 4	0.58 undefined	40.72 undefined	25.4	0
6	30 -1	49 9	39 4	0.69 undefined	40.83 undefined	25.6	0
7	30 -1	49 9	39 4	0.81 undefined	40.95 undefined	25.9	0
8	30 -1	48 9	39 4	0.92 undefined	41.06 undefined	26.1	0
9	29 -1	48 9	39 4	1.03 undefined	41.17 undefined	26.3	0
10	29 -1	48 9	38 4	1.14 undefined	41.28 undefined	26.6	0
11	29 -2	47 9	38 3	1.26 undefined	41.4 undefined	26.8	0
12	29 -2	47 8	38 3	1.38 undefined	41.52 undefined	27	0
13	29 -2	47 8	38 3	1.49 undefined	41.63 undefined	27.2	0
14	29 -2	46 8	38 3	1.6 undefined	41.74 undefined	27.5	0
15	29 -2	46 8	37 3	1.72 undefined	41.86 undefined	27.7	0
16	28 -2	46 8	37 3	1.83 undefined	41.97 undefined	27.9	0
17	28 -2	46 8	37 3	1.94 undefined	42.08 undefined	28.1	0
18	28 -2	45 7	37 3	2.05 undefined	42.19 undefined	28.3	0
19	28 -2	45 7	37 3	2.16 undefined	42.3 undefined	28.5	0
20	28 -2	45 7	36 2	2.27 undefined	42.41 undefined	28.7	0
21	28 -2	45 7	36 2	2.38 undefined	42.52 undefined	28.9	0
22	27 -3	45 7	36 2	2.49 undefined	42.63 undefined	29.1	0
23	27 -3	44 7	36 2	2.6 undefined	42.74 undefined	29.3	0
24	27 -3	44 7	36 2	2.71 undefined	42.85 undefined	29.5	0
25	27 -3	44 7	35 2	2.82 undefined	42.96 undefined	29.7	0
26	27 -3	44 7	35 2	2.93 undefined	43.07 undefined	29.8	0
27	27 -3	44 6	35 2	3.03 undefined	43.17 undefined	30	0
28	26 -3	43 6	35 2	3.13 undefined	43.27 undefined	30.2	0
29	26 -3	43 6	35 2	3.23 undefined	43.37 undefined	30.3	0
30	26 -3	43 6	35 1	3.33 undefined	43.47 undefined	30.5	0
31	26 -3	43 6	34 1	3.43 undefined	43.57 undefined	30.7	0