Overview Realtime Historical Map View
Heat Advisory
2026-07-20T20:00:00-05:00

* WHAT...Heat index values up to 105 expected. * WHERE...Portions of northwest and west central Iowa, northeast Nebraska, and southeast South Dakota. * WHEN...From noon to 8 PM CDT Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Perry Creek Near Milnerville, Ia Historical Data

Historical Data


Streamflow Range


Date Average 2016 2015 2014 2013 2012
01-01 4.44
01-02 4.29
01-03 3.9
01-04 3.38
01-05 3.96
01-06 3.96
01-07 3.42
01-08 4.39
01-09 5.08
01-10 7.21
01-11 8.6
01-12 2.0
01-13 12.0
01-14 6.26
01-15 6.26
01-16 5.79
01-17 6.36
01-18 5.89
01-19 5.92
01-20 12.0
01-21 12.0
01-22 11.0
01-23 5.92
01-24 6.42
01-25 6.05
01-26 0.85
01-27 0.78
01-28 5.96
01-29 11.0
01-30 11.0
01-31 11.0
02-01 12.0
02-02 6.39
02-03 13.77
02-04 2.29
02-05 14.29
02-06 7.79
02-07 7.79
02-08 6.76
02-09 6.26
02-10 12.0
02-11 11.0
02-12 11.0
02-13 5.83
02-14 5.86
02-15 11.0
02-16 11.0
02-17 6.29
02-18 18.0
02-20 30.3
02-21 15.77
02-22 13.27
02-23 13.36
02-24 13.86
02-25 7.86
02-26 10.77
02-27 11.27
02-28 13.73
02-29 27.0
03-01 11.73
03-02 10.73
03-03 10.27
03-04 10.82
03-05 10.27
03-06 10.23
03-07 10.77
03-08 10.6
03-09 10.7
03-10 128.5
03-11 11.75
03-12 11.45
03-13 9.8
03-14 8.43
03-15 41.97
03-16 13.1
03-17 8.03
03-18 7.53
03-19 6.46
03-20 2.75
03-21 6.55
03-22 6.73
03-23 6.42
03-24 4.35
03-25 9.3
03-26 7.82
03-27 9.04
03-28 10.13
03-29 8.84
03-30 8.3
03-31 3.58
04-01 8.36
04-02 7.44
04-03 7.06
04-04 6.76
04-05 6.36
04-06 6.34
04-07 6.16
04-08 5.92
04-09 5.82
04-10 7.02
04-11 6.45
04-12 6.04
04-13 5.95
04-14 5.82
04-15 4.77
04-16 4.33
04-17 3.25
04-18 3.7
04-19 3.6
04-20 4.3
04-21 7.92
04-22 6.86
04-23 6.32
04-24 7.16
04-25 7.24
04-26 6.34
04-27 6.22
04-28 8.92
04-29 7.84
04-30 7.76
05-01 10.44
05-02 9.42
05-03 8.44
05-04 7.52
05-05 9.32
05-06 6.96
05-07 6.78
05-08 6.38
05-09 6.98
05-10 8.1
05-11 6.92
05-12 7.82
05-13 6.94
05-14 6.42
05-15 6.52
05-16 6.12
05-17 7.08
05-18 6.84
05-19 6.42
05-20 7.08
05-21 6.84
05-22 6.56
05-23 6.4
05-24 43.92
05-25 10.34
05-26 9.67
05-27 12.79
05-28 38.86
05-29 15.2
05-30 30.83
05-31 34.84
06-01 11.8
06-02 16.26
06-03 11.64
06-04 11.64
06-05 10.56
06-06 9.84
06-07 35.28
06-08 9.82
06-09 11.64
06-10 10.52
06-11 9.76
06-12 10.2
06-13 10.07
06-14 9.72
06-15 51.5
06-16 14.38
06-17 944.72
06-18 21.32
06-19 13.13
06-20 11.17
06-21 18.67
06-22 11.72
06-23 21.15
06-24 14.15
06-25 12.32
06-26 10.8
06-27 10.03
06-28 11.27
06-29 10.17
06-30 10.78
07-01 10.18
07-02 9.22
07-03 8.25
07-04 7.9
07-05 7.25
07-06 7.33
07-07 6.88
07-08 6.55
07-09 6.15
07-10 5.92
07-11 5.72
07-12 5.13
07-13 5.67
07-14 5.38
07-15 5.17
07-16 5.08
07-17 4.8
07-18 5.28
07-19 4.77
07-20 4.8
07-21 4.6
07-22 4.27
07-23 4.27
07-24 4.03
07-25 3.97
07-26 6.93
07-27 4.2
07-28 13.04
07-29 4.43
07-30 2.55
07-31 3.91
08-01 3.69
08-02 3.52
08-03 3.34
08-04 3.14
08-05 3.18
08-06 3.06
08-07 4.61
08-08 4.17
08-09 3.17
08-10 2.69
08-11 3.29
08-12 3.08
08-13 3.04
08-14 2.79
08-15 2.87
08-16 2.87
08-17 2.94
08-18 1.89
08-19 1.94
08-20 1.91
08-21 1.99
08-22 1.81
08-23 2.83
08-24 3.1
08-25 2.78
08-26 2.73
08-27 2.68
08-28 2.96
08-29 4.89
08-30 3.85
08-31 3.45
09-01 3.38
09-02 3.25
09-03 3.05
09-04 3.03
09-05 3.1
09-06 3.09
09-07 3.55
09-08 3.43
09-09 3.97
09-10 3.18
09-11 3.02
09-12 2.41
09-13 2.69
09-14 2.48
09-15 2.48
09-16 2.24
09-17 2.18
09-18 2.12
09-19 2.28
09-20 3.45
09-21 2.28
09-22 2.08
09-23 2.18
09-24 2.63
09-25 26.73
09-26 5.49
09-27 4.53
09-28 4.13
09-29 4.06
09-30 4.04
10-01 4.05
10-02 3.82
10-03 4.75
10-04 4.36
10-05 4.23
10-06 4.13
10-07 4.0
10-08 3.64
10-09 3.72
10-10 3.56
10-11 3.57
10-12 3.46
10-13 3.31
10-14 3.33
10-15 3.34
10-16 3.23
10-17 3.23
10-18 3.12
10-19 3.85
10-20 3.21
10-21 2.88
10-22 2.62
10-23 3.6
10-24 3.93
10-25 3.71
10-26 3.71
10-27 3.7
10-28 3.66
10-29 3.68
10-30 3.61
10-31 3.78
11-01 3.61
11-02 2.27
11-03 3.13
11-04 3.31
11-05 3.14
11-06 3.14
11-07 3.0
11-08 3.16
11-09 3.09
11-10 3.14
11-11 3.23
11-12 8.64
11-13 4.92
11-14 4.64
11-15 4.32
11-16 4.28
11-17 4.4
11-18 1.59
11-19 1.79
11-20 1.59
11-21 5.4
11-22 5.46
11-23 7.9
11-24 7.2
11-25 5.04
11-26 8.55
11-27 7.4
11-28 2.9
11-29 4.78
11-30 4.89
12-01 4.74
12-02 4.33
12-03 4.74
12-04 4.36
12-05 4.63
12-06 4.73
12-07 4.96
12-08 5.06
12-09 8.45
12-10 8.95
12-11 5.32
12-12 5.1
12-13 5.59
12-14 1.95
12-15 4.0
12-16 2.27
12-17 5.81
12-18 5.24
12-19 5.21
12-20 3.4
12-21 1.79
12-22 5.04
12-23 5.28
12-24 5.34
12-25 4.96
12-26 4.73
12-27 4.51
12-28 4.66
12-29 1.99
12-30 4.58
12-31 3.92

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index