Coldest Days in a Year in Tokyo - How much is it in Tokyo?

According to Japan Meteorological Agency, from January 23rd to January 27th are the coldest days in a year in Tokyo. The following shows the average temperature data (moving average) in January between 1980-2010 in Tokyo.

Table : Average Temperature in January (Celsius)

Day	Average temperature	Average Max	Average Min	Score
1	5.8	10.3	1.6	17.7
2	5.7	10.2	1.5	17.4
3	5.6	10.1	1.4	17.1
4	5.6	10.0	1.4	17.0
5	5.5	10.0	1.3	16.8
6	5.5	9.9	1.3	16.7
7	5.4	9.9	1.2	16.5
8	5.4	9.8	1.2	16.4
9	5.4	9.8	1.2	16.4
10	5.3	9.7	1.1	16.1
11	5.3	9.7	1.1	16.1
12	5.3	9.6	1.1	16.0
13	5.2	9.6	1.1	15.9
14	5.2	9.5	1.0	15.7
15	5.1	9.5	1.0	15.6
16	5.1	9.4	1.0	15.5
17	5.1	9.4	0.9	15.4
18	5.0	9.3	0.9	15.2
19	5.0	9.3	0.9	15.2
20	5.0	9.3	0.8	15.1
21	4.9	9.3	0.8	15.0
22	4.9	9.3	0.8	15.0
23	4.9	9.3	0.7	14.9
24	4.9	9.3	0.7	14.9
25	4.9	9.3	0.7	14.9
26	4.9	9.3	0.7	14.9
27	4.9	9.3	0.7	14.9
28	4.9	9.4	0.7	15.0
29	4.9	9.4	0.8	15.1
30	4.9	9.4	0.8	15.1
31	5.0	9.5	0.8	15.3

Table : Average Temperature in January (Fahrenheit)

Day	Average temperature	Average Max	Average Min
1	42.4	50.5	34.9
2	42.3	50.4	34.7
3	42.1	50.2	34.5
4	42.1	50.0	34.5
5	41.9	50.0	34.3
6	41.9	49.8	34.3
7	41.7	49.8	34.2
8	41.7	49.6	34.2
9	41.7	49.6	34.2
10	41.5	49.5	34.0
11	41.5	49.5	34.0
12	41.5	49.3	34.0
13	41.4	49.3	34.0
14	41.4	49.1	33.8
15	41.2	49.1	33.8
16	41.2	48.9	33.8
17	41.2	48.9	33.6
18	41.0	48.7	33.6
19	41.0	48.7	33.6
20	41.0	48.7	33.4
21	40.8	48.7	33.4
22	40.8	48.7	33.4
23	40.8	48.7	33.3
24	40.8	48.7	33.3
25	40.8	48.7	33.3
26	40.8	48.7	33.3
27	40.8	48.7	33.3
28	40.8	48.9	33.3
29	40.8	48.9	33.4
30	40.8	48.9	33.4
31	41.0	49.1	33.4