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.

Natchaug River At Willimantic, 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
01-01 488.42
01-02 474.09
01-03 443.25
01-04 398.27
01-05 379.33
01-06 405.17
01-07 415.5
01-08 470.17
01-09 392.42
01-10 434.36
01-11 331.0
01-12 451.0
01-13 386.5
01-14 473.0
01-15 575.83
01-16 558.25
01-17 602.62
01-18 543.77
01-19 535.0
01-20 507.46
01-21 501.92
01-22 394.38
01-23 318.42
01-24 398.38
01-25 416.15
01-26 559.67
01-27 602.17
01-28 605.77
01-29 589.38
01-30 487.92
01-31 389.71
02-01 338.29
02-02 344.5
02-03 313.29
02-04 317.54
02-05 378.15
02-06 356.25
02-07 355.83
02-08 391.18
02-09 353.0
02-10 328.75
02-11 324.23
02-12 332.46
02-13 440.31
02-14 313.5
02-15 338.31
02-16 326.75
02-17 307.91
02-18 400.67
02-19 352.0
02-20 363.85
02-21 356.54
02-22 317.67
02-23 361.92
02-24 389.77
02-25 406.18
02-26 469.75
02-27 474.38
02-28 487.15
02-29 485.0
03-01 513.92
03-02 461.85
03-03 475.85
03-04 519.0
03-05 553.92
03-06 523.15
03-07 534.31
03-08 516.86
03-09 537.21
03-10 487.23
03-11 478.79
03-12 597.62
03-13 632.43
03-14 715.14
03-15 553.36
03-16 578.07
03-17 557.79
03-18 638.86
03-19 539.47
03-20 480.93
03-21 442.53
03-22 411.29
03-23 450.07
03-24 496.27
03-25 508.0
03-26 553.6
03-27 534.07
03-28 440.27
03-29 480.53
03-30 533.4
03-31 554.36
04-01 589.67
04-02 624.27
04-03 605.57
04-04 626.0
04-05 558.93
04-06 643.0
04-07 595.87
04-08 603.53
04-09 598.21
04-10 589.73
04-11 488.47
04-12 409.21
04-13 396.36
04-14 425.79
04-15 493.92
04-16 466.46
04-17 552.69
04-18 659.23
04-19 569.38
04-20 567.77
04-21 496.21
04-22 533.57
04-23 535.86
04-24 494.86
04-25 548.15
04-26 540.43
04-27 518.79
04-28 472.86
04-29 492.64
04-30 466.36
05-01 450.14
05-02 513.23
05-03 490.69
05-04 446.79
05-05 429.08
05-06 416.14
05-07 423.5
05-08 444.85
05-09 438.0
05-10 365.71
05-11 384.85
05-12 375.77
05-13 379.08
05-14 360.5
05-15 302.08
05-16 313.0
05-17 319.69
05-18 390.13
05-19 442.67
05-20 395.14
05-21 251.07
05-22 261.93
05-23 262.07
05-24 292.71
05-25 309.93
05-26 309.5
05-27 303.71
05-28 217.57
05-29 215.93
05-30 254.24
05-31 270.64
06-01 271.29
06-02 317.57
06-03 310.0
06-04 268.29
06-05 196.9
06-06 231.21
06-07 175.3
06-08 243.2
06-09 251.14
06-10 345.7
06-11 251.44
06-12 288.71
06-13 330.6
06-14 238.22
06-15 300.16
06-16 316.43
06-17 296.19
06-18 186.45
06-19 183.18
06-20 168.35
06-21 167.66
06-22 159.34
06-23 167.12
06-24 158.11
06-25 144.85
06-26 122.37
06-27 120.72
06-28 115.62
06-29 114.13
06-30 134.8
07-01 144.74
07-02 143.02
07-03 229.22
07-04 246.71
07-05 207.29
07-06 243.06
07-07 244.78
07-08 229.05
07-09 200.5
07-10 154.44
07-11 149.43
07-12 373.67
07-13 353.68
07-14 411.48
07-15 417.26
07-16 385.42
07-17 366.2
07-18 299.24
07-19 262.93
07-20 271.71
07-21 325.6
07-22 274.0
07-23 284.74
07-24 218.88
07-25 166.92
07-26 160.29
07-27 141.65
07-28 162.56
07-29 183.06
07-30 134.04
07-31 125.99
08-01 151.74
08-02 139.15
08-03 149.47
08-04 116.86
08-05 100.39
08-06 93.11
08-07 101.87
08-08 135.37
08-09 153.33
08-10 181.54
08-11 182.27
08-12 161.66
08-13 141.28
08-14 130.49
08-15 109.11
08-16 167.41
08-17 202.32
08-18 228.93
08-19 191.26
08-20 189.75
08-21 269.83
08-22 198.16
08-23 103.41
08-24 136.25
08-25 173.5
08-26 107.02
08-27 106.02
08-28 83.46
08-29 93.43
08-30 169.08
08-31 267.49
09-01 225.17
09-02 258.01
09-03 99.63
09-04 233.45
09-05 231.51
09-06 213.92
09-07 240.86
09-08 261.76
09-09 244.16
09-10 286.53
09-11 239.78
09-12 218.38
09-13 217.32
09-14 233.9
09-15 223.74
09-16 196.27
09-17 172.24
09-18 137.51
09-19 178.54
09-20 220.32
09-21 182.56
09-22 141.17
09-23 124.65
09-24 129.45
09-25 128.24
09-26 186.76
09-27 330.96
09-28 312.4
09-29 274.4
09-30 298.28
10-01 228.6
10-02 199.4
10-03 207.27
10-04 209.08
10-05 298.68
10-06 222.0
10-07 225.65
10-08 180.66
10-09 141.1
10-10 143.4
10-11 142.91
10-12 159.6
10-13 180.8
10-14 177.57
10-15 169.29
10-16 123.47
10-17 179.28
10-18 222.61
10-19 173.57
10-20 154.06
10-21 171.13
10-22 154.15
10-23 140.21
10-24 162.58
10-25 192.33
10-26 189.71
10-27 214.87
10-28 222.24
10-29 243.14
10-30 262.33
10-31 243.42
11-01 291.36
11-02 275.08
11-03 267.77
11-04 264.93
11-05 263.07
11-06 278.32
11-07 283.32
11-08 249.43
11-09 215.52
11-10 203.15
11-11 219.45
11-12 206.53
11-13 218.82
11-14 242.95
11-15 296.4
11-16 265.76
11-17 248.23
11-18 256.93
11-19 259.28
11-20 255.1
11-21 249.19
11-22 227.82
11-23 246.21
11-24 252.6
11-25 294.28
11-26 334.14
11-27 361.83
11-28 380.15
11-29 323.5
11-30 274.86
12-01 331.36
12-02 388.46
12-03 323.14
12-04 320.07
12-05 288.64
12-06 315.77
12-07 320.14
12-08 382.29
12-09 550.08
12-10 372.21
12-11 499.5
12-12 443.86
12-13 426.71
12-14 540.83
12-15 491.23
12-16 475.92
12-17 514.0
12-18 393.64
12-19 360.62
12-20 429.5
12-21 484.73
12-22 501.17
12-23 493.85
12-24 524.85
12-25 579.42
12-26 583.45
12-27 630.09
12-28 741.0
12-29 755.4
12-30 454.64
12-31 570.25

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index