Heat Advisory
2026-07-21T19:00:00-05:00

* WHAT...Heat index values of 100 to 110 at times. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 7 PM CDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Creve Coeur Creek Near Creve Coeur, Mo 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 11.29
01-02 15.81
01-03 38.38
01-04 9.92
01-05 6.94
01-06 6.3
01-07 6.52
01-08 6.27
01-09 13.17
01-10 56.86
01-11 303.0
01-12 21.42
01-13 47.78
01-14 12.32
01-15 12.4
01-16 9.74
01-17 8.29
01-18 217.15
01-19 30.72
01-20 8.59
01-21 6.77
01-22 6.26
01-23 109.45
01-24 25.93
01-25 11.09
01-26 27.85
01-27 11.43
01-28 14.24
01-29 8.42
01-30 111.28
01-31 34.0
02-01 11.79
02-02 28.06
02-03 9.68
02-04 51.53
02-05 14.39
02-06 17.74
02-07 65.08
02-08 13.29
02-09 39.96
02-10 20.73
02-11 13.94
02-12 18.27
02-13 14.99
02-14 8.48
02-15 26.27
02-16 14.33
02-17 14.37
02-18 14.15
02-19 13.6
02-20 13.45
02-21 61.98
02-22 14.66
02-23 15.17
02-24 26.18
02-25 27.14
02-26 17.9
02-27 16.28
02-28 16.28
02-29 8.41
03-01 10.58
03-02 9.95
03-03 33.3
03-04 19.73
03-05 65.14
03-06 12.52
03-07 140.64
03-08 10.35
03-09 10.5
03-10 28.79
03-11 27.33
03-12 16.08
03-13 56.56
03-14 43.24
03-15 41.49
03-16 28.25
03-17 28.78
03-18 274.04
03-19 21.09
03-20 28.91
03-21 12.84
03-22 12.43
03-23 12.16
03-24 147.77
03-25 53.7
03-26 43.19
03-27 26.89
03-28 37.27
03-29 24.26
03-30 41.52
03-31 51.58
04-01 17.32
04-02 225.26
04-03 55.21
04-04 130.94
04-05 242.79
04-06 33.13
04-07 15.22
04-08 34.94
04-09 52.33
04-10 16.27
04-11 105.75
04-12 16.79
04-13 21.0
04-14 90.93
04-15 25.1
04-16 227.57
04-17 20.56
04-18 209.78
04-19 36.49
04-20 43.93
04-21 51.66
04-22 15.2
04-23 13.4
04-24 40.16
04-25 50.54
04-26 27.37
04-27 43.25
04-28 40.2
04-29 119.16
04-30 29.92
05-01 147.6
05-02 19.98
05-03 27.15
05-04 118.83
05-05 39.06
05-06 29.05
05-07 18.63
05-08 30.81
05-09 23.64
05-10 19.11
05-11 20.11
05-12 30.17
05-13 14.4
05-14 12.92
05-15 27.27
05-16 17.91
05-17 72.52
05-18 30.14
05-19 23.35
05-20 20.39
05-21 51.44
05-22 25.67
05-23 15.43
05-24 14.46
05-25 11.87
05-26 29.88
05-27 16.7
05-28 31.37
05-29 12.57
05-30 16.76
05-31 24.15
06-01 182.43
06-02 23.26
06-03 11.0
06-04 9.59
06-05 50.16
06-06 22.18
06-07 11.58
06-08 98.12
06-09 16.13
06-10 22.83
06-11 86.83
06-12 20.35
06-13 12.75
06-14 161.12
06-15 13.44
06-16 21.49
06-17 45.59
06-18 61.18
06-19 28.14
06-20 30.83
06-21 14.14
06-22 22.89
06-23 24.93
06-24 51.66
06-25 11.14
06-26 102.12
06-27 33.85
06-28 27.69
06-29 20.11
06-30 19.7
07-01 23.88
07-02 33.86
07-03 13.44
07-04 19.93
07-05 17.39
07-06 8.25
07-07 15.33
07-08 43.0
07-09 59.96
07-10 76.83
07-11 29.29
07-12 13.89
07-13 39.86
07-14 16.71
07-15 117.75
07-16 24.25
07-17 18.87
07-18 41.35
07-19 10.71
07-20 38.24
07-21 19.48
07-22 36.21
07-23 13.15
07-24 8.04
07-25 6.73
07-26 247.13
07-27 14.65
07-28 12.73
07-29 12.65
07-30 22.95
07-31 13.95
08-01 9.47
08-02 8.89
08-03 9.75
08-04 135.27
08-05 11.97
08-06 19.63
08-07 11.89
08-08 13.86
08-09 382.24
08-10 10.73
08-11 19.3
08-12 7.77
08-13 22.13
08-14 12.74
08-15 7.52
08-16 16.4
08-17 28.34
08-18 9.26
08-19 6.14
08-20 7.17
08-21 9.83
08-22 70.98
08-23 9.01
08-24 7.45
08-25 6.88
08-26 7.42
08-27 45.42
08-28 9.21
08-29 11.91
08-30 8.22
08-31 14.0
09-01 65.64
09-02 40.37
09-03 10.82
09-04 8.12
09-05 72.56
09-06 8.35
09-07 6.63
09-08 51.26
09-09 15.39
09-10 155.87
09-11 32.7
09-12 7.72
09-13 5.82
09-14 5.33
09-15 10.15
09-16 5.93
09-17 16.0
09-18 7.4
09-19 13.04
09-20 7.96
09-21 7.58
09-22 10.92
09-23 7.21
09-24 17.75
09-25 5.29
09-26 46.09
09-27 6.59
09-28 5.86
09-29 5.5
09-30 9.22
10-01 4.96
10-02 4.44
10-03 18.25
10-04 5.83
10-05 4.87
10-06 8.28
10-07 6.31
10-08 7.45
10-09 4.65
10-10 55.29
10-11 20.51
10-12 5.94
10-13 6.55
10-14 8.56
10-15 24.8
10-16 7.25
10-17 5.31
10-18 13.67
10-19 23.25
10-20 67.9
10-21 5.2
10-22 5.29
10-23 8.0
10-24 6.66
10-25 7.08
10-26 31.68
10-27 17.96
10-28 7.77
10-29 28.91
10-30 17.41
10-31 8.03
11-01 16.29
11-02 7.03
11-03 41.29
11-04 5.68
11-05 60.71
11-06 40.68
11-07 6.08
11-08 7.52
11-09 9.21
11-10 5.95
11-11 6.43
11-12 29.37
11-13 7.73
11-14 6.97
11-15 29.46
11-16 9.95
11-17 18.04
11-18 10.19
11-19 11.4
11-20 8.92
11-21 11.8
11-22 52.05
11-23 12.25
11-24 20.96
11-25 21.1
11-26 13.14
11-27 33.81
11-28 9.3
11-29 8.83
11-30 87.92
12-01 13.26
12-02 10.28
12-03 8.44
12-04 8.18
12-05 11.98
12-06 34.47
12-07 10.39
12-08 8.54
12-09 8.92
12-10 8.94
12-11 18.45
12-12 32.35
12-13 4.27
12-14 43.81
12-15 45.45
12-16 10.48
12-17 7.61
12-18 5.93
12-19 6.49
12-20 19.32
12-21 8.38
12-22 11.0
12-23 17.67
12-24 10.33
12-25 5.87
12-26 6.67
12-27 311.33
12-28 107.75
12-29 99.6
12-30 13.0
12-31 9.16

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index