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

* WHAT...Heat index values up to 101 expected. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, southeastern, and western Massachusetts, and northern and southern Rhode Island. * WHEN...From 11 AM this morning to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Assabet River At Maynard, 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
01-01 305.25
01-02 294.27
01-03 315.6
01-04 320.22
01-05 283.64
01-06 280.91
01-07 264.87
01-08 252.23
01-09 228.42
01-10 253.07
01-11 323.75
01-12 338.33
01-13 339.08
01-14 349.83
01-15 350.58
01-16 315.91
01-17 312.85
01-18 282.0
01-19 298.77
01-20 282.0
01-21 273.94
01-22 260.78
01-23 259.17
01-24 249.67
01-25 291.66
01-26 339.33
01-27 368.28
01-28 412.55
01-29 352.62
01-30 324.17
01-31 302.08
02-01 293.5
02-02 279.25
02-03 246.67
02-04 236.5
02-05 267.33
02-06 243.0
02-07 267.18
02-08 264.7
02-09 271.83
02-10 258.55
02-11 250.42
02-12 386.67
02-13 238.12
02-14 218.93
02-15 246.09
02-16 220.71
02-17 212.56
02-18 240.85
02-19 257.55
02-20 248.53
02-21 233.0
02-22 212.18
02-23 222.14
02-24 241.67
02-25 256.98
02-26 258.69
02-27 283.15
02-28 291.77
02-29 306.0
03-01 287.75
03-02 274.86
03-03 316.14
03-04 347.54
03-05 319.43
03-06 320.23
03-07 332.0
03-08 349.29
03-09 354.14
03-10 343.79
03-11 350.57
03-12 372.15
03-13 361.43
03-14 369.71
03-15 403.29
03-16 424.14
03-17 418.36
03-18 409.43
03-19 370.0
03-20 343.79
03-21 325.47
03-22 313.93
03-23 295.33
03-24 318.93
03-25 354.8
03-26 358.0
03-27 341.33
03-28 327.27
03-29 359.2
03-30 388.53
03-31 423.43
04-01 423.67
04-02 433.47
04-03 415.5
04-04 428.13
04-05 468.53
04-06 464.2
04-07 440.73
04-08 424.13
04-09 417.64
04-10 391.47
04-11 356.8
04-12 307.21
04-13 294.7
04-14 298.46
04-15 298.25
04-16 304.31
04-17 357.46
04-18 366.92
04-19 330.08
04-20 317.92
04-21 294.43
04-22 289.43
04-23 310.24
04-24 356.02
04-25 342.51
04-26 301.55
04-27 312.12
04-28 335.89
04-29 311.01
04-30 286.31
05-01 297.96
05-02 338.96
05-03 328.78
05-04 302.24
05-05 285.99
05-06 288.43
05-07 283.17
05-08 244.25
05-09 221.03
05-10 228.53
05-11 257.86
05-12 254.92
05-13 228.66
05-14 190.93
05-15 174.66
05-16 201.67
05-17 224.31
05-18 227.45
05-19 202.59
05-20 169.54
05-21 176.71
05-22 163.71
05-23 170.07
05-24 189.01
05-25 185.99
05-26 183.35
05-27 180.45
05-28 171.78
05-29 161.18
05-30 168.54
05-31 170.33
06-01 165.99
06-02 162.46
06-03 170.44
06-04 166.39
06-05 140.13
06-06 145.13
06-07 157.52
06-08 170.59
06-09 179.65
06-10 178.95
06-11 159.41
06-12 161.36
06-13 161.32
06-14 167.68
06-15 177.49
06-16 174.77
06-17 158.4
06-18 152.38
06-19 153.26
06-20 144.4
06-21 143.15
06-22 139.12
06-23 126.81
06-24 118.64
06-25 113.56
06-26 117.76
06-27 124.3
06-28 146.64
06-29 156.71
06-30 148.16
07-01 124.78
07-02 116.93
07-03 136.13
07-04 165.31
07-05 155.54
07-06 137.77
07-07 119.36
07-08 113.04
07-09 104.56
07-10 144.18
07-11 169.94
07-12 160.95
07-13 159.79
07-14 145.28
07-15 126.66
07-16 126.93
07-17 141.98
07-18 145.84
07-19 156.37
07-20 146.49
07-21 123.69
07-22 105.95
07-23 100.9
07-24 124.65
07-25 119.04
07-26 98.19
07-27 99.04
07-28 100.39
07-29 94.86
07-30 88.74
07-31 82.09
08-01 87.08
08-02 83.19
08-03 79.89
08-04 67.49
08-05 63.86
08-06 64.69
08-07 56.51
08-08 68.42
08-09 111.4
08-10 109.78
08-11 104.07
08-12 108.37
08-13 91.61
08-14 78.51
08-15 70.19
08-16 84.34
08-17 107.79
08-18 102.22
08-19 117.28
08-20 130.76
08-21 124.32
08-22 115.32
08-23 91.41
08-24 90.65
08-25 90.04
08-26 92.51
08-27 95.39
08-28 91.49
08-29 121.38
08-30 130.01
08-31 115.97
09-01 90.54
09-02 109.26
09-03 153.42
09-04 146.04
09-05 124.22
09-06 107.79
09-07 115.26
09-08 125.62
09-09 135.21
09-10 146.27
09-11 163.69
09-12 147.31
09-13 138.93
09-14 127.96
09-15 110.86
09-16 93.34
09-17 82.69
09-18 74.0
09-19 100.93
09-20 125.44
09-21 122.21
09-22 105.91
09-23 92.15
09-24 86.83
09-25 92.19
09-26 115.04
09-27 117.56
09-28 108.13
09-29 102.47
09-30 134.39
10-01 146.79
10-02 138.96
10-03 114.36
10-04 100.89
10-05 130.8
10-06 129.62
10-07 131.19
10-08 108.28
10-09 95.23
10-10 89.69
10-11 80.94
10-12 88.6
10-13 97.17
10-14 113.19
10-15 120.26
10-16 93.03
10-17 113.91
10-18 129.27
10-19 132.9
10-20 109.76
10-21 119.05
10-22 164.39
10-23 166.71
10-24 166.11
10-25 147.26
10-26 135.15
10-27 150.39
10-28 166.45
10-29 181.61
10-30 211.58
10-31 238.38
11-01 278.34
11-02 266.85
11-03 233.0
11-04 225.77
11-05 214.33
11-06 199.98
11-07 190.75
11-08 188.37
11-09 171.16
11-10 171.15
11-11 183.04
11-12 183.29
11-13 201.09
11-14 202.14
11-15 198.98
11-16 193.73
11-17 207.64
11-18 219.49
11-19 205.78
11-20 195.91
11-21 184.01
11-22 178.16
11-23 179.54
11-24 204.87
11-25 211.74
11-26 197.41
11-27 221.08
11-28 247.37
11-29 224.84
11-30 197.24
12-01 218.86
12-02 249.38
12-03 244.7
12-04 233.0
12-05 218.74
12-06 226.38
12-07 233.41
12-08 248.79
12-09 276.11
12-10 265.19
12-11 288.63
12-12 313.21
12-13 298.94
12-14 296.56
12-15 269.34
12-16 267.28
12-17 276.73
12-18 295.62
12-19 357.82
12-20 390.23
12-21 367.64
12-22 324.92
12-23 310.36
12-24 350.08
12-25 355.38
12-26 375.19
12-27 353.97
12-28 349.09
12-29 333.65
12-30 298.82
12-31 319.67

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index