日	気温℃ 平均	気温℃ 最高	気温℃ 最低	湿度％平均	湿度％最大	湿度％最小	最大風速 m/s	最大時風向	降水量 mm	平均地温 5cm	平均地温 15cm
1998年9月 FM秩父
1	18.9	21.2	17.1	100.4	101.7	94.1	0.00	E	3.0	21.4	21.5
2	19.0	21.3	17.8	100.6	101.7	91.3	0.00	W	13.5	21.4	21.5
3	18.1	20.0	17.3	101.1	101.8	90.6	0.20	NNW	2.0	21.0	21.2
4	17.4	18.3	16.8	100.8	101.6	98.2	0.00	N	0.5	20.5	20.8
5	17.8	20.6	16.6	99.1	101.4	84.6	0.20	NNE	2.0	20.4	20.5
6	16.9	19.2	15.9	99.9	101.8	91.2	0.00	NNW	0.5	20.2	20.4
7	16.1	16.5	15.6	101.6	101.7	101.4	0.00	NW	12.0	19.3	19.8
8	17.8	23.4	15.6	97.5	101.6	76.7	0.50	NNW	1.5	20.0	19.8
9	18.6	25.0	15.0	93.6	101.6	61.6	0.70	SE	0.0	21.4	21.1
10	18.8	25.4	15.6	94.6	102.2	60.4	0.70	N	0.0	22.1	21.8
11	17.9	22.6	15.3	95.5	102.0	77.2	0.10	WNW	0.0	21.7	21.7
12	18.2	24.2	15.2	94.7	101.3	70.6	0.10	SSE	0.0	21.6	21.4
13	18.8	26.8	15.3	91.6	102.2	60.2	0.70	W	0.0	22.2	21.9
14	17.3	21.2	14.5	95.3	102.0	74.9	0.30	NW	0.0	21.6	21.7
15	17.5	20.1	15.2	100.8	102.3	94.7	0.10	WSW	21.5	20.5	20.7
16	18.3	25.7	15.4	94.9	102.5	66.4	0.90	NNE	203.0	19.7	19.4
17	16.3	21.9	12.1	89.8	100.8	50.2	0.50	N	0.0	19.7	19.9
18	16.2	17.2	15.0	101.9	102.5	100.1	0.10	WSW	1.0	19.2	19.5
19	19.3	26.4	14.6	95.7	102.6	68.4	0.60	SW	0.0	20.4	20.0
20	19.7	26.4	15.3	94.2	102.3	72.0	1.10	WSW	0.0	22.0	21.6
21	19.2	23.8	17.3	100.5	102.3	86.6	1.00	SE	24.0	22.5	22.3
22	20.5	23.3	19.0	96.3	102.0	78.9	2.00	WNW	18.5	21.9	22.0
23	19.6	22.4	17.7	98.1	102.1	82.2	0.00	N	1.0	21.3	21.5
24	18.5	20.0	16.8	101.9	102.3	101.2	0.30	NW	31.5	20.9	21.1
25	19.1	26.4	15.2	96.1	102.2	56.3	0.60	NNW	0.0	20.6	20.7
26	17.5	19.4	13.8	102.0	102.4	101.5	0.00	N	39.5	20.4	20.7
27	13.7	14.3	13.1	102.4	102.4	102.3	0.10	SSE	26.0	18.3	19.0
28	14.9	18.9	13.1	101.1	102.4	88.9	0.60	SSW	7.0	17.9	18.3
29	14.4	17.3	12.2	101.4	102.3	91.5	0.00	N	1.0	17.6	18.1
30	15.9	17.2	14.8	101.5	102.1	98.9	0.00	NW	2.0	17.9	18.1
月合計									411.0
月平均	17.7	21.5	15.5	98.2	102.0	82.4	0.38		13.7	20.5	20.6
月最大	20.5	26.8	19.0	102.4	102.6	102.3	2.00		203.0	22.5	22.3
月最小	13.7	14.3	12.1	89.8	100.8	50.2	0.00		0.0	17.6	18.1