Overview Realtime Historical Map View
Heat Advisory
2026-07-15T20:00:00-04:00

* WHAT...Heat index values up to 102 expected. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, southeastern, and western Massachusetts, and Rhode Island. * WHEN...From 11 AM Tuesday to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Charles River At Medway, Ma Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 185.2
01-02 169.13
01-03 157.89
01-04 154.25
01-05 143.3
01-06 162.8
01-07 164.2
01-08 165.7
01-09 145.3
01-10 191.96
01-11 257.8
01-12 235.6
01-13 212.18
01-14 234.1
01-15 212.6
01-16 169.21
01-17 185.88
01-18 154.21
01-19 151.58
01-20 159.42
01-21 149.25
01-22 132.85
01-23 149.9
01-24 161.02
01-25 237.85
01-26 288.69
01-27 286.29
01-28 247.94
01-29 200.73
01-30 195.0
01-31 154.81
02-01 129.13
02-02 115.34
02-03 119.31
02-04 128.53
02-05 165.71
02-06 117.45
02-07 139.03
02-08 145.06
02-09 150.65
02-10 151.02
02-11 140.76
02-12 159.18
02-13 150.47
02-14 137.22
02-15 140.05
02-16 132.23
02-17 129.16
02-18 150.74
02-19 144.47
02-20 139.21
02-21 136.46
02-22 127.91
02-23 141.33
02-24 147.0
02-25 169.8
02-26 167.82
02-27 158.7
02-28 199.85
02-29 146.0
03-01 193.75
03-02 182.31
03-03 222.07
03-04 232.62
03-05 199.94
03-06 194.87
03-07 204.4
03-08 207.19
03-09 206.59
03-10 201.32
03-11 211.74
03-12 218.74
03-13 214.51
03-14 209.46
03-15 227.86
03-16 230.84
03-17 225.89
03-18 211.45
03-19 186.17
03-20 175.43
03-21 163.05
03-22 154.0
03-23 151.78
03-24 196.11
03-25 209.57
03-26 192.63
03-27 174.97
03-28 178.53
03-29 204.07
03-30 206.53
03-31 238.43
04-01 243.07
04-02 254.27
04-03 227.0
04-04 237.4
04-05 262.73
04-06 237.13
04-07 219.33
04-08 218.13
04-09 210.5
04-10 188.53
04-11 166.99
04-12 141.87
04-13 138.06
04-14 145.61
04-15 146.77
04-16 148.42
04-17 191.65
04-18 196.51
04-19 168.55
04-20 161.22
04-21 150.41
04-22 158.89
04-23 197.87
04-24 228.48
04-25 197.4
04-26 173.46
04-27 190.61
04-28 186.35
04-29 164.75
04-30 142.96
05-01 154.65
05-02 187.04
05-03 177.71
05-04 147.17
05-05 139.42
05-06 138.03
05-07 139.97
05-08 123.9
05-09 116.57
05-10 120.59
05-11 124.89
05-12 118.64
05-13 110.61
05-14 92.46
05-15 92.24
05-16 102.52
05-17 102.51
05-18 104.98
05-19 92.93
05-20 85.04
05-21 93.19
05-22 85.51
05-23 109.35
05-24 112.31
05-25 112.02
05-26 103.25
05-27 90.33
05-28 80.57
05-29 77.21
05-30 80.49
05-31 92.4
06-01 81.55
06-02 77.64
06-03 82.19
06-04 77.65
06-05 70.54
06-06 74.49
06-07 85.76
06-08 106.53
06-09 117.31
06-10 102.23
06-11 89.32
06-12 112.49
06-13 104.99
06-14 112.01
06-15 125.13
06-16 110.59
06-17 97.39
06-18 87.81
06-19 90.65
06-20 80.26
06-21 70.92
06-22 60.84
06-23 58.85
06-24 57.05
06-25 50.67
06-26 50.79
06-27 48.71
06-28 49.32
06-29 61.19
06-30 61.67
07-01 63.16
07-02 67.19
07-03 67.48
07-04 81.95
07-05 63.11
07-06 52.59
07-07 50.54
07-08 52.09
07-09 55.59
07-10 115.84
07-11 136.59
07-12 122.18
07-13 103.1
07-14 86.32
07-15 68.42
07-16 59.87
07-17 66.47
07-18 64.49
07-19 60.59
07-20 56.96
07-21 49.89
07-22 50.54
07-23 49.45
07-24 56.39
07-25 54.88
07-26 50.73
07-27 51.1
07-28 50.26
07-29 44.36
07-30 45.81
07-31 41.02
08-01 38.77
08-02 36.89
08-03 43.5
08-04 40.74
08-05 43.62
08-06 42.8
08-07 39.07
08-08 63.73
08-09 83.56
08-10 73.42
08-11 66.88
08-12 55.26
08-13 47.45
08-14 42.63
08-15 38.57
08-16 51.59
08-17 44.41
08-18 36.86
08-19 33.18
08-20 32.4
08-21 40.27
08-22 39.46
08-23 34.09
08-24 34.74
08-25 33.96
08-26 35.36
08-27 30.11
08-28 35.09
08-29 82.72
08-30 85.71
08-31 69.75
09-01 44.01
09-02 58.0
09-03 89.73
09-04 85.18
09-05 62.74
09-06 46.25
09-07 50.77
09-08 52.19
09-09 82.56
09-10 73.69
09-11 63.95
09-12 48.46
09-13 45.24
09-14 50.64
09-15 45.73
09-16 41.0
09-17 34.79
09-18 29.32
09-19 87.25
09-20 76.34
09-21 59.42
09-22 46.15
09-23 36.26
09-24 34.06
09-25 46.94
09-26 63.58
09-27 71.88
09-28 64.75
09-29 56.4
09-30 64.63
10-01 69.01
10-02 62.39
10-03 52.67
10-04 42.17
10-05 80.02
10-06 69.52
10-07 68.87
10-08 51.87
10-09 44.79
10-10 45.24
10-11 40.47
10-12 36.03
10-13 31.57
10-14 40.65
10-15 49.34
10-16 52.28
10-17 53.96
10-18 59.31
10-19 59.2
10-20 55.24
10-21 75.42
10-22 85.33
10-23 74.06
10-24 75.03
10-25 68.29
10-26 64.53
10-27 64.89
10-28 89.42
10-29 85.59
10-30 118.68
10-31 124.63
11-01 133.86
11-02 125.11
11-03 104.24
11-04 107.01
11-05 96.56
11-06 92.0
11-07 91.93
11-08 81.12
11-09 70.78
11-10 94.35
11-11 97.64
11-12 92.75
11-13 93.9
11-14 110.66
11-15 103.5
11-16 99.07
11-17 110.58
11-18 119.32
11-19 109.77
11-20 97.45
11-21 91.09
11-22 85.11
11-23 78.88
11-24 114.18
11-25 120.98
11-26 112.8
11-27 132.58
11-28 141.68
11-29 122.26
11-30 106.21
12-01 121.14
12-02 121.98
12-03 127.09
12-04 119.34
12-05 105.71
12-06 139.11
12-07 130.13
12-08 141.52
12-09 158.02
12-10 194.22
12-11 203.67
12-12 223.3
12-13 190.62
12-14 175.86
12-15 167.92
12-16 166.02
12-17 158.72
12-18 173.5
12-19 240.33
12-20 248.5
12-21 215.8
12-22 175.58
12-23 164.24
12-24 189.08
12-25 187.59
12-26 232.03
12-27 212.11
12-28 219.2
12-29 197.2
12-30 160.2
12-31 169.56

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index