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

* WHAT...Heat index values around 95. * WHERE...Portions of northern Connecticut, southeastern Massachusetts, and all of Rhode Island, except for Block Island. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Willimantic River Near Coventry, Ct. Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 370.2
01-02 339.56
01-03 322.7
01-04 325.38
01-05 292.56
01-06 342.7
01-07 296.7
01-08 269.5
01-09 270.22
01-10 530.75
01-11 501.56
01-12 349.56
01-13 401.6
01-14 382.91
01-15 333.6
01-16 300.0
01-17 345.73
01-18 299.67
01-19 269.8
01-20 284.73
01-21 268.36
01-22 266.9
01-23 241.1
01-24 317.45
01-25 603.1
01-26 641.5
01-27 602.89
01-28 492.56
01-29 419.3
01-30 366.6
01-31 312.44
02-01 320.7
02-02 274.0
02-03 253.67
02-04 253.03
02-05 372.53
02-06 285.5
02-07 302.44
02-08 345.13
02-09 312.2
02-10 269.44
02-11 321.56
02-12 418.11
02-13 311.77
02-14 266.08
02-15 259.64
02-16 269.91
02-17 290.44
02-18 341.0
02-19 333.25
02-20 286.2
02-21 276.9
02-22 225.11
02-23 307.4
02-24 322.2
02-25 368.92
02-26 363.1
02-27 329.45
02-28 413.55
02-29 422.25
03-01 358.45
03-02 343.45
03-03 511.73
03-04 415.36
03-05 348.91
03-06 394.0
03-07 459.55
03-08 393.33
03-09 366.15
03-10 394.25
03-11 397.62
03-12 418.08
03-13 486.38
03-14 418.57
03-15 443.43
03-16 438.0
03-17 470.71
03-18 436.14
03-19 353.33
03-20 337.79
03-21 318.8
03-22 300.86
03-23 349.67
03-24 478.87
03-25 404.67
03-26 361.47
03-27 343.53
03-28 335.0
03-29 424.6
03-30 405.47
03-31 464.93
04-01 457.8
04-02 466.27
04-03 410.57
04-04 455.53
04-05 486.07
04-06 409.87
04-07 422.0
04-08 426.8
04-09 401.71
04-10 384.2
04-11 340.87
04-12 308.14
04-13 347.93
04-14 427.29
04-15 358.92
04-16 450.23
04-17 571.54
04-18 422.31
04-19 352.85
04-20 346.54
04-21 367.29
04-22 341.14
04-23 330.14
04-24 415.79
04-25 309.31
04-26 299.64
04-27 432.93
04-28 363.71
04-29 295.93
04-30 263.71
05-01 335.87
05-02 391.0
05-03 319.79
05-04 294.87
05-05 290.07
05-06 296.67
05-07 302.27
05-08 257.93
05-09 243.8
05-10 298.6
05-11 310.93
05-12 253.14
05-13 240.86
05-14 188.77
05-15 236.85
05-16 282.5
05-17 249.14
05-18 284.87
05-19 283.47
05-20 263.0
05-21 252.93
05-22 205.73
05-23 235.53
05-24 250.93
05-25 276.1
05-26 252.05
05-27 218.35
05-28 177.87
05-29 194.87
05-30 199.32
05-31 219.75
06-01 228.08
06-02 199.39
06-03 224.89
06-04 181.25
06-05 156.04
06-06 163.2
06-07 140.19
06-08 249.29
06-09 222.57
06-10 179.51
06-11 155.29
06-12 229.87
06-13 197.64
06-14 198.32
06-15 301.31
06-16 196.07
06-17 155.2
06-18 149.09
06-19 158.79
06-20 148.19
06-21 132.99
06-22 132.87
06-23 125.46
06-24 117.28
06-25 126.69
06-26 116.24
06-27 119.31
06-28 118.58
06-29 178.16
06-30 137.36
07-01 149.88
07-02 192.36
07-03 204.61
07-04 241.1
07-05 278.17
07-06 165.24
07-07 156.15
07-08 148.44
07-09 157.39
07-10 405.71
07-11 260.97
07-12 192.68
07-13 188.59
07-14 160.16
07-15 191.84
07-16 153.56
07-17 284.74
07-18 307.74
07-19 307.25
07-20 209.99
07-21 156.52
07-22 139.99
07-23 124.91
07-24 130.41
07-25 118.71
07-26 127.32
07-27 128.46
07-28 143.0
07-29 125.99
07-30 168.67
07-31 124.77
08-01 102.37
08-02 97.91
08-03 97.84
08-04 77.96
08-05 106.25
08-06 106.0
08-07 80.46
08-08 141.42
08-09 99.45
08-10 119.98
08-11 99.77
08-12 92.83
08-13 81.75
08-14 100.64
08-15 82.87
08-16 188.93
08-17 112.84
08-18 98.63
08-19 149.55
08-20 215.97
08-21 137.71
08-22 135.7
08-23 138.22
08-24 150.09
08-25 109.03
08-26 85.99
08-27 87.74
08-28 83.76
08-29 303.84
08-30 149.36
08-31 104.78
09-01 84.64
09-02 291.9
09-03 227.75
09-04 147.58
09-05 121.07
09-06 103.41
09-07 146.59
09-08 145.21
09-09 207.01
09-10 177.63
09-11 155.72
09-12 122.92
09-13 143.37
09-14 167.11
09-15 117.65
09-16 92.74
09-17 83.29
09-18 73.16
09-19 115.41
09-20 100.04
09-21 79.35
09-22 75.82
09-23 86.88
09-24 89.53
09-25 118.83
09-26 231.33
09-27 153.4
09-28 110.26
09-29 127.8
09-30 272.45
10-01 196.21
10-02 138.11
10-03 116.59
10-04 108.3
10-05 179.47
10-06 145.75
10-07 131.71
10-08 125.69
10-09 121.86
10-10 109.34
10-11 100.67
10-12 117.04
10-13 111.18
10-14 134.68
10-15 169.52
10-16 115.22
10-17 170.04
10-18 155.37
10-19 125.31
10-20 117.36
10-21 145.71
10-22 137.86
10-23 128.62
10-24 114.81
10-25 115.89
10-26 115.26
10-27 194.06
10-28 182.71
10-29 167.97
10-30 339.74
10-31 217.08
11-01 235.74
11-02 218.65
11-03 199.42
11-04 236.36
11-05 181.29
11-06 169.98
11-07 178.04
11-08 160.05
11-09 144.59
11-10 173.12
11-11 179.72
11-12 169.05
11-13 172.36
11-14 218.97
11-15 177.9
11-16 169.78
11-17 197.14
11-18 201.78
11-19 178.29
11-20 173.13
11-21 175.77
11-22 153.69
11-23 159.16
11-24 196.74
11-25 253.57
11-26 194.81
11-27 258.22
11-28 269.62
11-29 198.86
11-30 182.64
12-01 269.93
12-02 227.77
12-03 238.06
12-04 221.21
12-05 192.71
12-06 258.92
12-07 224.64
12-08 281.14
12-09 321.93
12-10 348.36
12-11 430.07
12-12 369.54
12-13 289.0
12-14 288.18
12-15 357.67
12-16 302.55
12-17 303.18
12-18 277.7
12-19 569.93
12-20 409.55
12-21 305.36
12-22 402.33
12-23 340.38
12-24 389.46
12-25 356.08
12-26 487.25
12-27 380.92
12-28 348.0
12-29 414.3
12-30 351.64
12-31 353.17

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index