Overview Realtime Historical Map View
Heat Advisory
2026-07-16T00:00:00-06:00

* WHAT...Afternoon temperatures will be near or exceed 100 degrees with overnight temperatures dipping to between 65 to 70, providing little relief. * WHERE...Portions of panhandle Nebraska and east central and southeast Wyoming. * WHEN...Until midnight MDT Wednesday Night. * IMPACTS...Hot temperatures and poor hydration may cause heat illnesses or injuries.

Cheyenne River Near Spencer, Wy Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2017 2016 2015 2014 2013 2012 2011
02-28 4.74
02-29 13.4
03-06 11.4
03-07 9.9
03-08 11.0
03-09 10.6
03-10 45.1
03-11 27.99
03-12 30.88
03-13 22.76
03-14 20.5
03-15 18.04
03-16 14.96
03-17 11.7
03-18 9.84
03-19 9.54
03-20 8.58
03-21 6.66
03-22 4.07
03-23 7.4
03-24 7.94
03-25 7.68
03-26 7.78
03-27 10.82
03-28 10.16
03-29 9.65
03-30 9.16
03-31 8.96
04-01 9.69
04-02 9.53
04-03 9.58
04-04 11.03
04-05 10.27
04-06 9.76
04-07 12.07
04-08 11.69
04-09 10.81
04-10 9.46
04-11 8.93
04-12 8.66
04-13 8.62
04-14 8.08
04-15 8.84
04-16 8.78
04-17 8.48
04-18 10.04
04-19 12.58
04-20 10.71
04-21 10.03
04-22 9.46
04-23 9.62
04-24 10.69
04-25 9.23
04-26 10.89
04-27 11.04
04-28 10.03
04-29 12.23
04-30 14.61
05-01 20.85
05-02 17.52
05-03 16.57
05-04 17.43
05-05 13.96
05-06 12.97
05-07 11.57
05-08 11.18
05-09 25.25
05-10 19.02
05-11 15.59
05-12 27.43
05-13 28.71
05-14 27.97
05-15 22.61
05-16 22.98
05-17 25.76
05-18 54.87
05-19 23.12
05-20 16.85
05-21 27.95
05-22 43.7
05-23 29.54
05-24 65.04
05-25 37.89
05-26 151.01
05-27 147.83
05-28 142.83
05-29 91.23
05-30 91.15
05-31 72.41
06-01 81.41
06-02 77.03
06-03 53.36
06-04 40.6
06-05 475.92
06-06 422.93
06-07 177.79
06-08 107.02
06-09 86.36
06-10 66.24
06-11 49.83
06-12 18.97
06-13 17.19
06-14 20.73
06-15 61.12
06-16 60.03
06-17 96.34
06-18 108.54
06-19 128.94
06-20 70.27
06-21 56.51
06-22 19.26
06-23 19.25
06-24 17.6
06-25 65.54
06-26 112.2
06-27 151.59
06-28 89.92
06-29 74.83
06-30 60.71
07-01 54.72
07-02 58.46
07-03 53.69
07-04 52.07
07-05 43.13
07-06 28.63
07-07 26.39
07-08 23.07
07-09 96.81
07-10 52.67
07-11 32.79
07-12 27.95
07-13 42.16
07-14 29.68
07-15 19.32
07-16 20.12
07-17 18.97
07-18 21.68
07-19 20.86
07-20 16.75
07-21 15.22
07-22 17.1
07-23 15.36
07-24 11.78
07-25 11.29
07-26 17.49
07-27 15.58
07-28 10.17
07-29 10.13
07-30 38.51
07-31 64.95
08-01 122.74
08-02 93.09
08-03 57.1
08-04 36.59
08-05 31.51
08-06 32.8
08-07 22.4
08-08 19.9
08-09 14.43
08-10 12.53
08-11 11.72
08-12 9.54
08-13 68.93
08-14 49.44
08-15 50.81
08-16 18.63
08-17 14.31
08-18 13.96
08-19 8.65
08-20 6.55
08-21 4.94
08-22 14.7
08-23 8.84
08-24 5.21
08-25 5.92
08-26 4.71
08-27 3.75
08-28 13.76
08-29 7.3
08-30 5.2
08-31 8.42
09-01 9.0
09-02 7.52
09-03 4.51
09-04 4.44
09-05 11.66
09-06 11.76
09-07 10.67
09-08 8.73
09-09 6.36
09-10 5.05
09-11 13.35
09-12 11.24
09-13 10.79
09-14 9.33
09-15 6.91
09-16 5.82
09-17 20.3
09-18 7.55
09-19 5.02
09-20 3.64
09-21 3.75
09-22 3.65
09-23 3.21
09-24 2.68
09-25 2.46
09-26 2.62
09-27 2.54
09-28 2.81
09-29 2.72
09-30 2.49
10-01 4.21
10-02 3.51
10-03 3.26
10-04 4.37
10-05 3.69
10-06 3.95
10-07 10.45
10-08 6.93
10-09 17.45
10-10 25.78
10-11 16.8
10-12 30.39
10-13 35.58
10-14 70.18
10-15 80.68
10-16 50.09
10-17 37.54
10-18 83.38
10-19 29.9
10-20 19.36
10-21 24.96
10-22 17.79
10-23 18.34
10-24 15.68
10-25 11.34
10-26 10.39
10-27 8.85
10-28 6.0
10-29 5.63
10-30 5.12
10-31 5.06
11-01 4.38
11-02 4.65
11-03 4.96
11-04 5.04
11-05 4.09
11-06 3.79
11-07 3.45
11-08 3.7
11-09 4.84
11-10 4.7
11-11 5.54
11-12 4.46
11-13 4.58
11-14 4.33
11-15 4.51
11-16 4.39
11-17 2.69
11-18 4.49
11-19 4.86
11-20 6.94
11-21 7.14
11-22 8.24
11-23 5.06
11-24 4.85
11-25 4.58
11-26 10.09
11-28 14.0
11-29 14.0

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index