Table 1

Weather data for the Iowa State University Horticulture Research Station
January 1 to December 31, 1998.

January	Precipitation (inches)	High (F° )	Low (F° )
1		20	-1
2	0.09	45	19
3		54	33
4		51	20
5	0.31	33	23
6	0.06	35	32
7	0.01	35	30
8		33	28
9		36	27
10		32	8
11		20	6
12		18	7
13		19	0
14		14	-5
15		21	8
16	0.01	22	-1
17		24	15
18	0.01	26	-1
19		23	-2
20		23	12
21		27	11
22		30	23
23	0.16	34	26
24		31	8
25		31	19
26		38	16
27		36	12
28		37	23
29		40	24
30		38	18
31		32	15
February	Precipitation (inches)	High (F° )	Low (F° )
1	0.02	48	28
2	0.27	38	26
3	0.06	32	20
4		25	6
5		29	23
6		29	18
7		38	18
8		39	16
9		46	19
10		44	29
11	0.17	38	32
12		32	28
13		32	24
14	0.17	35	28
15	0.03	36	27
16		56	36
17	0.07	46	36
18	0.15	41	35
19	0.20	40	35
20	0.23	39	34
21	0.02	43	34
22		42	35
23		49	38
24	0.03	57	41
25		60	33
26	0.03	58	44
27		56	41
28		41	30

March	Precipitation (inches)	High (F° )	Low (F° )
1	0.03	32	27
2	0.07	33	27
3	0.04	41	24
4		32	24
5		36	21
6	0.01	35	30
7	0.01	40	21
8	0.01	36	29
9	0.02	34	27
10		27	6
11		16	-1
12		13	-1
13		16	-9
14	0.03	28	12
15		29	12
16		35	23
17		48	30
18	0.18	41	38
19	0.36	41	39
20		40	38
21		45	35
22		50	33
23		47	32
24		43	29
25	0.11	43	22
26	0.13	65	39
27		76	49
28	0.16	69	53
29	0.01	59	50
30		80	50
31	1.01	69	47
April	Precipitation (inches)	High (F° )	Low (F° )
1	0.12	52	42
2	0.02	42	37
3		48	39
4		47	36
5		59	33
6		60	36
7	0.25	68	48
8	0.17	59	52
9	0.39	52	44
10	0.01	58	41
11		64	34
12		74	45
13		72	54
14	0.02	66	53
15	0.02	67	45
16	0.37	56	45
17	0.01	54	38
18		62	35
19		66	42
20	0.10	66	45
21	0.66	55	45
22		65	41
23		71	38
24		75	40
25		79	45
26	0.03	73	57
27	0.06	62	50
28		63	40
29		66	39
30	0.12	58	49

May	Precipitation (inches)	High (Fº)	Low (Fº)
1	0.03	67	52
2		79	49
3	0.14	63	47
4		76	54
5		81	47
6		80	53
7	0.12	71	54
8	0.04	70	57
9		71	54
10		78	52
11		79	49
12		80	53
13	0.24	77	59
14		81	47
15		88	65
16	0.28	84	63
17		84	59
18		89	61
19	0.03	92	70
20	0.09	94	70
21	0.32	79	65
22	0.04	79	64
23	0.63	70	61
24	0.67	69	57
25		75	54
26		71	60
27		79	58
28		84	63
29		84	66
30	0.32	87	65
31	0.84	85	68

June	Precipitation (inches)	High (Fº)	Low (Fº)
1	0.05	74	58
2		75	58
3	0.37	55	45
4	0.16	64	52
5		68	52
6	0.15	70	58
7	0.08	70	46
8	1.55	65	58
9	0.03	67	58
10	0.65	76	55
11	0.84	76	66
12		80	61
13	0.41	83	60
14	2.43	68	64
15	0.23	76	64
16		81	62
17	0.46	81	62
18	2.55	78	66
19		88	62
20	1.08	89	70
21		84	65
22		84	62
23	0.71	84	64
24		90	66
25		94	78
26		95	76
27	0.31	96	72
28		89	69
29	0.83	88	64
30		82	66

July	Precipitation (inches)	High (Fº)	Low (Fº)
1		85	65
2		88	66
3	0.18	86	72
4		86	68
5	0.12	73	66
6	0.34	92	73
7		90	71
8		90	70
9		91	72
10		91	72
11		86	70
12		87	67
13		90	69
14	0.02	88	74
15	0.21	87	66
16		86	64
17	1.11	82	65
18		82	61
19		88	67
20		91	70
21	0.01	95	74
22	0.16	85	71
23		83	66
24		78	58
25		82	63
26		77	64
27		82	59
28		86	62
29		89	59
30		81	58
31		79	60

August	Precipitation (inches)	High (Fº)	Low (Fº)
1		81	53
2		80	57
3	0.05	73	62
4	0.03	84	65
5	0.03	82	67
6	0.24	77	66
7	0.04	70	65
8	0.01	80	65
9		85	62
10		91	67
11		84	65
12		88	62
13		82	64
14		82	66
15	0.57	87	63
16	0.01	86	64
17		88	67
18	0.10	87	72
19		87	69
20		89	69
21	0.23	93	71
22	0.11	82	71
23		90	71
24		92	75
25		88	70
26		84	63
27		83	59
28	1.04	77	68
29	0.03	86	66
30		90	62
31		87	59

September	Precipitation (inches)	High (Fº)	Low (Fº)
1		82	54
2		78	50
3		86	62
4		85	58
5		88	58
6		92	65
7		76	53
8		72	48
9		74	45
10		64	63
11		90	54
12		93	52
13		89	61
14	0.09	78	65
15		84	62
16		79	57
17		85	57
18		86	59
19		90	64
20	0.27	81	60
21		65	50
22		68	43
23	0.25	72	38
24		79	57
25		87	61
26	0.18	89	70
27		82	60
28		82	54
29		87	63
30		79	46

October	Precipitation (inches)	High (Fº)	Low (Fº)
1		65	35
2	0.47	50	45
3	0.40	51	45
4	0.75	56	50
5	0.03	66	54
6		56	46
7		62	38
8		65	33
9		67	41
10		72	45
11	0.03	71	48
12		63	40
13		61	36
14	0.06	56	37
15		72	50
16	0.04	74	61
17	0.71	70	47
18		61	42
19		63	37
20	0.04	50	33
21		60	33
22		63	29
23		66	40
24	0.03	67	45
25	0.01	71	52
26	0.09	75	45
27	0.68	70	55
28	0.14	65	46
29		73	54
30		56	43
31		50	44

November	Precipitation (inches)	High (Fº)	Low (Fº)
1		53	43
2		48	38
3		43	29
4		44	29
5		38	30
6		41	25
7		35	23
8	0.14	37	32
9	0.15	45	36
10	0.38	57	33
11		49	30
12		44	28
13		54	26
14		57	33
15		47	32
16		49	35
17		51	35
18		56	33
19		42	26
20		40	21
21		55	21
22		62	42
23		58	30
24		57	27
25		59	37
26		67	30
27		68	31
28		58	37
29	0.05	70	55
30		57	35

December	Precipitation (inches)	High (Fº)	Low (Fº)
1		65	33
2		59	47
3		32	42
4	0.02	69	44
5		64	38
6		39	26
7		43	18
8		50	22
9		50	26
10		46	20
11		50	29
12		53	24
13		52	24
14		56	23
15		50	29
16		43	30
17		41	19
18		44	28
19		28	13
20		20	8
21		11	2
22		15	-3
23		22	6
24		28	5
25		33	15
26		25	6
27		38	15
28		39	14
29		39	0
30		6	-9
31		10	-14

Iowa State University

ISU Horticulture:Publications:1999 Turfgrass Report

College of Agriculture