Overview Realtime Historical Map View
Heat Advisory
2026-07-19T21:00:00-06:00

* WHAT...Peak afternoon heat index values of 95 to 105. * WHERE...Portions of northwestern, south central, and southwestern South Dakota and northeast Wyoming. * WHEN...Until 9 PM MDT /10 PM CDT/ Sunday. * IMPACTS...Hot temperatures may cause heat illnesses.

Redwater Cr At Wy-Sd State Line Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 42.36
01-02 44.28
01-03 42.02
01-04 42.05
01-05 41.9
01-06 43.34
01-07 54.42
01-08 43.01
01-09 42.85
01-10 43.09
01-11 42.48
01-12 42.08
01-13 43.67
01-14 47.46
01-15 55.49
01-16 51.5
01-17 48.94
01-18 40.49
01-19 40.69
01-20 40.75
01-21 40.59
01-22 40.75
01-23 39.94
01-24 45.13
01-25 47.85
01-26 49.09
01-27 44.0
01-28 40.39
01-29 39.89
01-30 40.48
01-31 43.88
02-01 46.13
02-02 39.22
02-03 39.64
02-04 39.8
02-05 38.82
02-06 40.83
02-07 42.73
02-08 52.43
02-09 41.35
02-10 41.2
02-11 41.45
02-12 40.45
02-13 40.58
02-14 41.15
02-15 48.43
02-16 40.5
02-17 38.63
02-18 40.44
02-19 41.32
02-20 41.32
02-21 45.2
02-22 40.33
02-23 43.74
02-24 45.52
02-25 45.37
02-26 41.9
02-27 41.52
02-28 41.39
02-29 48.23
03-01 39.89
03-02 40.08
03-03 39.98
03-04 38.68
03-05 39.92
03-06 60.78
03-07 49.97
03-08 47.09
03-09 41.33
03-10 42.44
03-11 42.84
03-12 43.52
03-13 50.18
03-14 43.11
03-15 44.17
03-16 44.39
03-17 43.51
03-18 47.46
03-19 48.06
03-20 46.68
03-21 52.99
03-22 52.2
03-23 47.64
03-24 46.11
03-25 46.32
03-26 45.95
03-27 45.83
03-28 46.4
03-29 46.41
03-30 46.79
03-31 46.08
04-01 48.89
04-02 47.75
04-03 47.97
04-04 46.69
04-05 46.99
04-06 47.16
04-07 49.53
04-08 49.93
04-09 50.88
04-10 48.87
04-11 50.43
04-12 50.13
04-13 49.71
04-14 50.76
04-15 49.56
04-16 47.68
04-17 47.04
04-18 51.82
04-19 49.9
04-20 53.48
04-21 54.98
04-22 58.73
04-23 59.0
04-24 62.06
04-25 63.8
04-26 57.91
04-27 59.33
04-28 65.01
04-29 63.58
04-30 61.26
05-01 61.65
05-02 61.12
05-03 60.97
05-04 61.35
05-05 61.99
05-06 61.78
05-07 63.72
05-08 68.44
05-09 63.97
05-10 64.18
05-11 63.99
05-12 63.08
05-13 62.47
05-14 68.91
05-15 65.44
05-16 60.34
05-17 59.4
05-18 58.61
05-19 61.03
05-20 61.79
05-21 77.78
05-22 95.15
05-23 106.51
05-24 92.12
05-25 82.09
05-26 84.1
05-27 80.51
05-28 78.96
05-29 84.99
05-30 83.52
05-31 75.55
06-01 128.57
06-02 120.67
06-03 78.57
06-04 68.44
06-05 68.02
06-06 71.96
06-07 62.74
06-08 59.19
06-09 56.53
06-10 54.69
06-11 52.53
06-12 46.65
06-13 46.7
06-14 47.02
06-15 49.04
06-16 49.36
06-17 48.78
06-18 48.73
06-19 49.21
06-20 54.54
06-21 54.54
06-22 55.92
06-23 72.42
06-24 54.44
06-25 55.13
06-26 55.07
06-27 55.89
06-28 77.57
06-29 52.65
06-30 48.86
07-01 46.99
07-02 46.66
07-03 46.09
07-04 45.62
07-05 43.66
07-06 47.1
07-07 45.32
07-08 44.18
07-09 46.72
07-10 43.72
07-11 43.51
07-12 41.82
07-13 42.04
07-14 47.21
07-15 44.46
07-16 44.18
07-17 44.4
07-18 72.06
07-19 45.9
07-20 41.82
07-21 43.52
07-22 42.12
07-23 41.23
07-24 39.99
07-25 42.26
07-26 41.63
07-27 41.05
07-28 42.78
07-29 41.87
07-30 41.52
07-31 43.75
08-01 38.48
08-02 42.05
08-03 39.04
08-04 38.91
08-05 38.81
08-06 38.24
08-07 36.7
08-08 36.6
08-09 36.23
08-10 36.75
08-11 37.56
08-12 36.97
08-13 36.28
08-14 36.66
08-15 37.58
08-16 31.12
08-17 30.66
08-18 29.8
08-19 33.98
08-20 34.49
08-21 34.68
08-22 36.03
08-23 35.68
08-24 35.37
08-25 35.04
08-26 35.82
08-27 38.3
08-28 36.6
08-29 36.88
08-30 36.56
08-31 34.27
09-01 37.48
09-02 35.96
09-03 35.06
09-04 36.04
09-05 35.91
09-06 36.3
09-07 36.23
09-08 37.21
09-09 37.35
09-10 36.09
09-11 35.81
09-12 35.84
09-13 35.77
09-14 35.99
09-15 38.27
09-16 39.17
09-17 39.04
09-18 39.1
09-19 38.76
09-20 39.05
09-21 39.11
09-22 38.52
09-23 39.62
09-24 40.31
09-25 39.69
09-26 39.59
09-27 40.44
09-28 40.09
09-29 40.35
09-30 42.24
10-01 41.68
10-02 41.86
10-03 42.4
10-04 42.21
10-05 44.96
10-06 43.56
10-07 43.44
10-08 44.29
10-09 43.89
10-10 43.84
10-11 44.06
10-12 46.36
10-13 47.36
10-14 46.41
10-15 46.92
10-16 48.97
10-17 47.64
10-18 46.26
10-19 45.56
10-20 46.74
10-21 47.77
10-22 47.37
10-23 46.95
10-24 47.23
10-25 47.21
10-26 46.79
10-27 47.16
10-28 47.48
10-29 47.31
10-30 47.71
10-31 47.15
11-01 47.1
11-02 46.95
11-03 47.67
11-04 47.54
11-05 47.82
11-06 46.92
11-07 46.36
11-08 46.42
11-09 46.36
11-10 46.5
11-11 46.31
11-12 45.62
11-13 45.74
11-14 46.29
11-15 46.24
11-16 46.21
11-17 46.12
11-18 45.81
11-19 45.98
11-20 45.86
11-21 45.87
11-22 45.15
11-23 44.49
11-24 45.64
11-25 45.66
11-26 44.58
11-27 43.98
11-28 43.31
11-29 44.26
11-30 44.02
12-01 43.54
12-02 42.8
12-03 43.11
12-04 42.98
12-05 42.9
12-06 42.72
12-07 42.76
12-08 44.86
12-09 60.35
12-10 42.72
12-11 42.67
12-12 43.12
12-13 42.75
12-14 42.33
12-15 41.86
12-16 41.97
12-17 42.09
12-18 42.27
12-19 41.93
12-20 41.62
12-21 44.71
12-22 42.95
12-23 42.55
12-24 42.42
12-25 42.06
12-26 41.55
12-27 42.58
12-28 42.93
12-29 41.56
12-30 42.32
12-31 42.45

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index