Overview Realtime Historical Map View
Extreme Heat Warning
2026-07-26T20:00:00-07:00

* WHAT...Dangerously hot conditions expected below 4000 feet, with daytime temperatures around 105 degrees at Havasupai Gardens, and 112 to 114 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...Until 8 PM MST Sunday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure.

Havasu Creek At Supai, Az Historical Data

Historical Data


Streamflow Range


Date Average 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 64.0
01-02 62.85
01-03 62.7
01-04 61.74
01-05 63.06
01-06 62.81
01-07 63.27
01-08 63.02
01-09 61.77
01-10 62.35
01-11 63.4
01-12 61.9
01-13 63.83
01-14 62.6
01-15 64.37
01-16 63.09
01-17 61.59
01-18 62.66
01-19 63.06
01-20 65.04
01-21 63.53
01-22 61.91
01-23 65.79
01-24 62.36
01-25 62.52
01-26 61.06
01-27 61.2
01-28 61.65
01-29 61.56
01-30 62.23
01-31 62.96
02-01 61.89
02-02 62.3
02-03 61.79
02-04 61.83
02-05 61.88
02-06 62.63
02-07 61.78
02-08 62.03
02-09 61.58
02-10 61.7
02-11 61.92
02-12 61.97
02-13 62.03
02-14 62.25
02-15 64.22
02-16 64.03
02-17 63.22
02-18 63.77
02-19 63.97
02-20 62.38
02-21 62.0
02-22 61.97
02-23 61.9
02-24 61.6
02-25 62.48
02-26 62.0
02-27 61.73
02-28 61.99
02-29 63.67
03-01 62.15
03-02 61.92
03-03 62.32
03-04 62.5
03-05 62.16
03-06 62.17
03-07 62.46
03-08 61.9
03-09 62.06
03-10 61.56
03-11 61.83
03-12 61.75
03-13 61.83
03-14 62.01
03-15 61.75
03-16 62.8
03-17 63.25
03-18 62.52
03-19 62.26
03-20 61.83
03-21 62.98
03-22 62.37
03-23 63.83
03-24 62.65
03-25 62.66
03-26 63.5
03-27 63.16
03-28 63.05
03-29 63.57
03-30 64.06
03-31 62.58
04-01 65.44
04-02 63.29
04-03 64.38
04-04 64.43
04-05 65.25
04-06 65.72
04-07 64.44
04-08 65.45
04-09 64.38
04-10 64.79
04-11 65.0
04-12 66.2
04-13 65.34
04-14 66.95
04-15 66.66
04-16 66.19
04-17 67.44
04-18 65.78
04-19 65.35
04-20 66.57
04-21 67.97
04-22 67.26
04-23 69.05
04-24 69.36
04-25 69.93
04-26 69.66
04-27 68.26
04-28 65.67
04-29 68.15
04-30 69.24
05-01 66.91
05-02 66.58
05-03 66.95
05-04 65.53
05-05 65.05
05-06 65.84
05-07 65.77
05-08 65.27
05-09 65.18
05-10 65.64
05-11 65.09
05-12 67.05
05-13 64.68
05-14 71.66
05-15 65.92
05-16 62.29
05-17 62.14
05-18 61.58
05-19 61.96
05-20 61.63
05-21 62.07
05-22 62.5
05-23 61.85
05-24 61.88
05-25 61.54
05-26 61.95
05-27 62.02
05-28 62.28
05-29 61.92
05-30 62.77
05-31 62.45
06-01 61.83
06-02 63.23
06-03 62.65
06-04 63.19
06-05 63.13
06-06 62.83
06-07 63.26
06-08 63.36
06-09 63.21
06-10 63.97
06-11 64.16
06-12 65.24
06-13 64.86
06-14 64.9
06-15 61.24
06-16 61.59
06-17 63.36
06-18 62.81
06-19 63.94
06-20 62.96
06-21 63.04
06-22 62.99
06-23 63.27
06-24 63.94
06-25 63.7
06-26 63.09
06-27 63.61
06-28 63.22
06-29 64.0
06-30 63.79
07-01 62.74
07-02 62.23
07-03 63.47
07-04 62.2
07-05 62.2
07-06 66.03
07-07 62.44
07-08 65.68
07-09 64.84
07-10 63.01
07-11 62.79
07-12 246.61
07-13 60.45
07-14 63.92
07-15 63.5
07-16 62.41
07-17 62.89
07-18 61.94
07-19 62.9
07-20 62.9
07-21 62.44
07-22 62.19
07-23 61.11
07-24 70.14
07-25 62.11
07-26 68.69
07-27 61.97
07-28 64.89
07-29 143.05
07-30 64.13
07-31 65.06
08-01 64.8
08-02 63.32
08-03 64.6
08-04 63.82
08-05 63.16
08-06 64.82
08-07 64.67
08-08 62.71
08-09 65.04
08-10 65.46
08-11 98.11
08-12 64.2
08-13 67.62
08-14 64.21
08-15 64.04
08-16 63.49
08-17 63.72
08-18 62.21
08-19 62.4
08-20 61.34
08-21 65.32
08-22 68.06
08-23 62.69
08-24 62.35
08-25 73.05
08-26 66.72
08-27 61.42
08-28 57.93
08-29 61.39
08-30 60.35
08-31 60.63
09-01 64.9
09-02 61.32
09-03 64.48
09-04 66.23
09-05 60.53
09-06 61.36
09-07 61.39
09-08 60.44
09-09 59.96
09-10 59.82
09-11 60.13
09-12 61.67
09-13 60.43
09-14 61.52
09-15 66.19
09-16 59.03
09-17 59.96
09-18 58.63
09-19 60.13
09-20 61.88
09-21 59.02
09-22 61.07
09-23 65.52
09-24 64.84
09-25 64.48
09-26 65.25
09-27 66.78
09-28 64.89
09-29 64.02
09-30 66.31
10-01 66.18
10-02 64.96
10-03 65.47
10-04 65.72
10-05 64.62
10-06 66.23
10-07 66.09
10-08 66.0
10-09 65.89
10-10 66.78
10-11 65.8
10-12 68.35
10-13 66.55
10-14 67.49
10-15 66.12
10-16 66.3
10-17 66.12
10-18 65.09
10-19 65.41
10-20 68.09
10-21 68.35
10-22 66.39
10-23 68.87
10-24 68.12
10-25 70.35
10-26 71.47
10-27 70.72
10-28 70.63
10-29 67.28
10-30 69.57
10-31 66.74
11-01 65.64
11-02 79.64
11-03 76.12
11-04 67.96
11-05 67.14
11-06 65.08
11-07 70.93
11-08 70.57
11-09 68.6
11-10 68.79
11-11 66.29
11-12 65.89
11-13 68.25
11-14 65.56
11-15 66.13
11-16 69.39
11-17 65.8
11-18 61.35
11-19 63.72
11-20 62.71
11-21 65.6
11-22 65.47
11-23 69.11
11-24 67.81
11-25 67.02
11-26 62.95
11-27 64.86
11-28 62.06
11-29 84.91
11-30 64.48
12-01 63.35
12-02 62.92
12-03 64.7
12-04 64.69
12-05 63.85
12-06 64.18
12-07 63.17
12-08 63.5
12-09 62.29
12-10 64.22
12-11 64.56
12-12 63.98
12-13 64.1
12-14 62.59
12-15 62.08
12-16 62.71
12-17 62.69
12-18 63.73
12-19 64.1
12-20 62.33
12-21 62.02
12-22 64.12
12-23 64.17
12-24 63.29
12-25 63.76
12-26 63.64
12-27 63.19
12-28 64.9
12-29 62.19
12-30 64.92
12-31 63.5

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index