Overview Realtime Historical Map View
Heat Advisory
2026-07-14T21:00:00-05:00

* WHAT...Heat index values of 95 to 105 expected today. Highest heat index values in far northeast Wisconsin. * WHERE...Portions of central, east central, north central, and northeast Wisconsin. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Wisconsin River At Merrill, Wi 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 2768.0
01-02 2830.0
01-03 2778.89
01-04 2690.0
01-05 2696.0
01-06 2635.0
01-07 2831.0
01-08 2722.0
01-09 2720.0
01-10 2752.0
01-11 2707.0
01-12 2676.0
01-13 2645.0
01-14 2706.67
01-15 2711.11
01-16 2786.67
01-17 2653.0
01-18 2632.0
01-19 2569.0
01-20 2600.0
01-21 2528.0
01-22 2441.0
01-23 2591.0
01-24 2617.0
01-25 2636.0
01-26 2533.33
01-27 2462.22
01-28 2406.0
01-29 2483.0
01-30 2393.64
01-31 2419.09
02-01 2360.91
02-02 2369.09
02-03 2325.45
02-04 2321.82
02-05 2298.18
02-06 2281.0
02-07 2284.0
02-08 2296.0
02-09 2149.09
02-10 2299.09
02-11 2317.0
02-12 2199.09
02-13 2320.91
02-14 2306.0
02-15 2284.0
02-16 2215.0
02-17 2175.56
02-18 2085.0
02-19 2292.0
02-20 2254.55
02-21 2228.18
02-22 2239.09
02-23 2162.73
02-24 2303.64
02-25 2374.0
02-26 2332.0
02-27 2242.73
02-28 2435.45
02-29 2433.33
03-01 2263.64
03-02 2200.91
03-03 2217.27
03-04 2228.18
03-05 2329.09
03-06 2350.91
03-07 2423.64
03-08 2533.64
03-09 2497.27
03-10 2808.18
03-11 2814.55
03-12 2728.18
03-13 2974.55
03-14 2997.27
03-15 3160.91
03-16 3635.83
03-17 4587.5
03-18 4359.17
03-19 3703.17
03-20 2939.83
03-21 3190.92
03-22 3119.09
03-23 3152.23
03-24 3146.54
03-25 3245.38
03-26 3397.69
03-27 3487.69
03-28 3666.15
03-29 3610.71
03-30 3725.38
03-31 4063.85
04-01 4037.14
04-02 3720.0
04-03 3430.0
04-04 3645.0
04-05 3880.71
04-06 3954.29
04-07 4053.33
04-08 4424.67
04-09 4075.0
04-10 4808.67
04-11 5785.33
04-12 6155.0
04-13 6995.71
04-14 7906.43
04-15 7614.17
04-16 6433.85
04-17 6270.0
04-18 6524.62
04-19 6763.08
04-20 6339.23
04-21 6289.29
04-22 6784.29
04-23 6518.57
04-24 6514.29
04-25 5917.69
04-26 6614.29
04-27 6547.86
04-28 6262.14
04-29 6212.86
04-30 6675.0
05-01 6239.33
05-02 5983.57
05-03 5507.14
05-04 5144.29
05-05 4891.33
05-06 4477.33
05-07 4338.0
05-08 4112.14
05-09 4274.0
05-10 4061.43
05-11 3910.0
05-12 3680.67
05-13 3844.67
05-14 3585.0
05-15 3780.0
05-16 3402.14
05-17 3367.14
05-18 3881.33
05-19 4032.0
05-20 4944.29
05-21 4690.67
05-22 4204.0
05-23 3900.0
05-24 3723.33
05-25 3529.33
05-26 3484.0
05-27 3684.67
05-28 4010.67
05-29 3956.67
05-30 3466.0
05-31 3355.33
06-01 3078.67
06-02 3331.43
06-03 3316.0
06-04 3110.71
06-05 3114.29
06-06 3050.0
06-07 3044.29
06-08 2875.0
06-09 2938.57
06-10 2905.71
06-11 3400.71
06-12 3556.92
06-13 3905.38
06-14 3813.85
06-15 3765.33
06-16 4146.0
06-17 3783.33
06-18 3896.0
06-19 4024.29
06-20 3899.29
06-21 3880.0
06-22 4005.38
06-23 4050.71
06-24 3777.86
06-25 3519.29
06-26 3396.43
06-27 3422.14
06-28 3464.29
06-29 3630.71
06-30 3554.77
07-01 3128.57
07-02 2792.14
07-03 2587.86
07-04 2505.0
07-05 2398.0
07-06 2424.67
07-07 2481.43
07-08 2335.0
07-09 2420.0
07-10 2305.71
07-11 2480.0
07-12 2271.33
07-13 2375.71
07-14 2230.67
07-15 2553.57
07-16 2360.71
07-17 2209.23
07-18 2160.77
07-19 2520.77
07-20 2398.57
07-21 2232.14
07-22 2091.43
07-23 2064.29
07-24 2010.71
07-25 2030.71
07-26 2015.71
07-27 2237.86
07-28 2387.14
07-29 2359.29
07-30 2221.54
07-31 2175.71
08-01 2099.17
08-02 1965.71
08-03 2236.43
08-04 2121.43
08-05 2264.17
08-06 2145.93
08-07 2194.29
08-08 2174.0
08-09 2315.38
08-10 2314.62
08-11 2025.0
08-12 2523.57
08-13 2117.86
08-14 2091.43
08-15 2036.92
08-16 1903.0
08-17 1810.77
08-18 1873.33
08-19 2017.69
08-20 2096.15
08-21 2039.23
08-22 2110.75
08-23 2021.43
08-24 1818.0
08-25 1844.62
08-26 2050.0
08-27 2062.86
08-28 2141.43
08-29 1926.64
08-30 1930.36
08-31 1986.23
09-01 2073.31
09-02 2022.5
09-03 2031.64
09-04 2124.29
09-05 2602.43
09-06 2807.43
09-07 2991.43
09-08 2772.31
09-09 2420.0
09-10 2409.08
09-11 3054.21
09-12 3106.14
09-13 3036.57
09-14 2912.14
09-15 2753.14
09-16 2506.64
09-17 2425.71
09-18 2338.57
09-19 2212.86
09-20 2157.14
09-21 2331.21
09-22 2128.23
09-23 2261.5
09-24 2295.0
09-25 2317.57
09-26 2204.71
09-27 2121.79
09-28 2039.23
09-29 2132.71
09-30 2134.46
10-01 2249.64
10-02 2084.23
10-03 2213.08
10-04 2415.31
10-05 2384.86
10-06 2446.0
10-07 2445.29
10-08 2457.07
10-09 2501.5
10-10 2701.43
10-11 2812.86
10-12 2656.07
10-13 2640.07
10-14 2612.86
10-15 2811.75
10-16 2386.46
10-17 2564.57
10-18 2733.86
10-19 2825.21
10-20 2929.5
10-21 2622.92
10-22 2697.86
10-23 2730.36
10-24 2591.43
10-25 2759.29
10-26 2648.57
10-27 2546.43
10-28 2507.69
10-29 2564.62
10-30 2442.14
10-31 2446.43
11-01 2230.86
11-02 2268.08
11-03 2201.5
11-04 2195.71
11-05 2141.54
11-06 2573.85
11-07 2415.15
11-08 2520.0
11-09 2332.83
11-10 2689.23
11-11 2770.0
11-12 2897.69
11-13 2806.92
11-14 2625.38
11-15 2462.31
11-16 2566.92
11-17 2512.14
11-18 2456.67
11-19 2473.85
11-20 2483.08
11-21 2516.93
11-22 2701.54
11-23 2397.86
11-24 2453.08
11-25 2674.17
11-26 2662.14
11-27 2549.29
11-28 2595.38
11-29 2733.85
11-30 2731.43
12-01 2762.86
12-02 2607.86
12-03 2568.57
12-04 2435.0
12-05 2497.14
12-06 2566.36
12-07 2504.62
12-08 2408.33
12-09 2335.83
12-10 2526.67
12-11 2472.73
12-12 2500.83
12-13 2665.45
12-14 2480.91
12-15 2615.45
12-16 2800.91
12-17 3430.0
12-18 3194.55
12-19 3029.09
12-20 2450.0
12-21 2534.0
12-22 2739.09
12-23 2693.64
12-24 2603.36
12-25 2798.18
12-26 2733.64
12-27 2669.0
12-28 2854.0
12-29 2621.11
12-30 2710.0
12-31 2816.0

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index