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.

Connecticut River At Thompsonville, 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 23716.67
01-02 22318.18
01-03 22966.67
01-04 21354.55
01-05 21266.67
01-06 19065.83
01-07 19050.0
01-08 18000.0
01-09 18245.45
01-10 17927.27
01-11 19334.17
01-12 20958.33
01-13 22616.67
01-14 26083.33
01-15 26100.0
01-16 24481.82
01-17 23991.67
01-18 21263.64
01-19 19086.92
01-20 18323.08
01-21 16523.64
01-22 18541.67
01-23 16839.17
01-24 15775.0
01-25 18586.15
01-26 20208.33
01-27 21801.67
01-28 20666.15
01-29 19523.08
01-30 18333.57
01-31 17657.69
02-01 17149.29
02-02 16492.86
02-03 15611.54
02-04 15542.31
02-05 17205.38
02-06 17050.91
02-07 17537.5
02-08 16503.64
02-09 15166.15
02-10 14343.33
02-11 14701.54
02-12 14526.15
02-13 19829.17
02-14 13773.64
02-15 13635.83
02-16 13460.0
02-17 12706.0
02-18 14732.5
02-19 14986.67
02-20 15114.62
02-21 14235.38
02-22 13311.54
02-23 15623.08
02-24 18066.92
02-25 16385.45
02-26 19672.31
02-27 20592.14
02-28 19085.0
02-29 26135.0
03-01 18077.14
03-02 17330.0
03-03 17648.57
03-04 18235.83
03-05 17011.43
03-06 16944.29
03-07 19198.57
03-08 20975.0
03-09 21382.86
03-10 18599.17
03-11 23198.57
03-12 23876.15
03-13 26417.86
03-14 28100.0
03-15 29564.29
03-16 26781.43
03-17 27221.43
03-18 31150.0
03-19 30078.67
03-20 27573.57
03-21 26209.33
03-22 25691.43
03-23 25424.0
03-24 25354.67
03-25 24664.0
03-26 24206.0
03-27 24200.0
03-28 24009.33
03-29 25822.0
03-30 28193.33
03-31 30157.14
04-01 32100.0
04-02 35740.0
04-03 35042.86
04-04 32693.33
04-05 35593.33
04-06 35330.0
04-07 33675.33
04-08 34233.33
04-09 35662.86
04-10 36652.0
04-11 36500.0
04-12 36092.86
04-13 36462.86
04-14 37712.14
04-15 42329.23
04-16 45036.92
04-17 46276.92
04-18 44815.38
04-19 44015.38
04-20 41599.23
04-21 38220.0
04-22 37147.86
04-23 36642.86
04-24 36885.71
04-25 37146.15
04-26 32714.29
04-27 32207.14
04-28 32707.14
04-29 31628.57
04-30 28533.57
05-01 33393.33
05-02 37164.29
05-03 35478.57
05-04 33680.0
05-05 31085.71
05-06 32892.67
05-07 33950.0
05-08 29792.86
05-09 26764.29
05-10 25633.33
05-11 25692.86
05-12 26042.86
05-13 24185.71
05-14 20516.15
05-15 18700.0
05-16 21016.67
05-17 24107.14
05-18 26191.33
05-19 26556.67
05-20 22959.29
05-21 22838.0
05-22 21672.67
05-23 20492.0
05-24 20581.33
05-25 19845.33
05-26 19149.33
05-27 20582.0
05-28 19940.0
05-29 18491.33
05-30 19184.67
05-31 19944.67
06-01 21214.67
06-02 20120.67
06-03 19654.0
06-04 18504.0
06-05 16437.14
06-06 14689.33
06-07 17288.57
06-08 19602.86
06-09 17280.67
06-10 16012.67
06-11 13735.33
06-12 14810.0
06-13 16400.0
06-14 15672.14
06-15 17029.33
06-16 15134.0
06-17 13962.67
06-18 12607.33
06-19 12863.57
06-20 13150.0
06-21 13070.71
06-22 13355.71
06-23 12914.29
06-24 13785.0
06-25 14132.14
06-26 13530.71
06-27 14755.0
06-28 14818.57
06-29 16457.86
06-30 17344.29
07-01 15763.57
07-02 16815.0
07-03 17966.43
07-04 19216.92
07-05 17389.33
07-06 16516.0
07-07 14809.29
07-08 12658.57
07-09 12617.86
07-10 11966.0
07-11 16225.71
07-12 19101.54
07-13 17811.43
07-14 15356.67
07-15 15193.57
07-16 14578.46
07-17 15660.0
07-18 14406.92
07-19 16743.57
07-20 16418.57
07-21 15082.14
07-22 13741.43
07-23 13302.14
07-24 13754.29
07-25 12968.57
07-26 11018.57
07-27 10880.0
07-28 10122.14
07-29 10588.57
07-30 10788.57
07-31 12257.14
08-01 11677.5
08-02 9436.15
08-03 10109.29
08-04 8595.71
08-05 9452.86
08-06 9775.71
08-07 8368.57
08-08 8058.33
08-09 7315.38
08-10 8760.77
08-11 8865.0
08-12 8614.29
08-13 9115.0
08-14 9087.86
08-15 10525.0
08-16 9547.69
08-17 9273.85
08-18 9475.0
08-19 9752.5
08-20 9003.85
08-21 8127.69
08-22 7760.83
08-23 8992.86
08-24 9277.69
08-25 8559.23
08-26 7954.29
08-27 7445.71
08-28 8126.43
08-29 12184.29
08-30 14632.14
08-31 13900.77
09-01 10201.43
09-02 10123.57
09-03 10532.86
09-04 9975.0
09-05 8797.86
09-06 8825.0
09-07 11357.14
09-08 11358.57
09-09 13195.71
09-10 12192.86
09-11 10165.71
09-12 9344.29
09-13 9186.15
09-14 9833.57
09-15 9812.14
09-16 8675.71
09-17 7772.86
09-18 7570.71
09-19 9135.71
09-20 8913.57
09-21 8530.71
09-22 7271.54
09-23 7485.0
09-24 8152.14
09-25 8403.57
09-26 9375.71
09-27 10250.0
09-28 9013.85
09-29 7517.86
09-30 9648.46
10-01 13247.5
10-02 12778.46
10-03 11625.38
10-04 9686.67
10-05 11995.0
10-06 11333.08
10-07 10476.43
10-08 8981.43
10-09 9815.71
10-10 10050.71
10-11 9049.29
10-12 8750.71
10-13 9229.23
10-14 8411.43
10-15 8741.54
10-16 10490.0
10-17 11837.86
10-18 12330.71
10-19 13752.31
10-20 11239.23
10-21 11174.62
10-22 12200.0
10-23 13505.71
10-24 13176.43
10-25 13832.14
10-26 12713.85
10-27 13540.0
10-28 13809.23
10-29 15545.71
10-30 15231.67
10-31 14982.5
11-01 21715.71
11-02 22770.0
11-03 20343.85
11-04 22292.14
11-05 20165.71
11-06 17076.92
11-07 16655.83
11-08 15944.62
11-09 14523.08
11-10 13140.77
11-11 13416.92
11-12 14030.0
11-13 14370.0
11-14 15430.71
11-15 16232.86
11-16 14636.43
11-17 13217.14
11-18 13460.77
11-19 14145.38
11-20 13282.31
11-21 14354.29
11-22 14105.38
11-23 12832.31
11-24 12848.33
11-25 12748.33
11-26 13505.38
11-27 12954.17
11-28 14932.5
11-29 17013.57
11-30 17408.57
12-01 17547.86
12-02 20004.62
12-03 20785.38
12-04 18355.0
12-05 19192.86
12-06 19232.31
12-07 16268.57
12-08 18007.86
12-09 21920.77
12-10 19820.71
12-11 19982.14
12-12 21395.71
12-13 22005.0
12-14 23183.64
12-15 21425.83
12-16 19896.67
12-17 19648.33
12-18 20073.33
12-19 23313.85
12-20 25238.33
12-21 26134.55
12-22 27613.33
12-23 27692.31
12-24 30269.23
12-25 33256.67
12-26 34230.83
12-27 32489.17
12-28 30872.73
12-29 29050.0
12-30 25510.0
12-31 26016.67

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index