Overview Realtime Historical Map View
Heat Advisory
2026-07-15T20:00:00-05:00

* WHAT...Heat index values up to 102 expected. * WHERE...Portions of northeast Iowa, southeast Minnesota, and southwest Wisconsin. * WHEN...From noon today to 8 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Mississippi River At Winona, Mn Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015
01-01 33033.33
01-02 27650.0
01-03 29433.33
01-04 31200.0
01-05 29950.0
01-06 31366.67
01-07 30800.0
01-08 29850.0
01-09 30800.0
01-10 28033.33
01-11 23366.67
01-12 24466.67
01-13 25850.0
01-14 25750.0
01-15 23900.0
01-16 27350.0
01-17 26966.67
01-18 27266.67
01-19 27300.0
01-20 27666.67
01-21 26633.33
01-22 30000.0
01-23 30300.0
01-24 30300.0
01-25 30150.0
01-26 28300.0
01-27 28600.0
01-28 30700.0
01-29 31200.0
01-30 30200.0
01-31 28400.0
02-01 29250.0
02-02 30000.0
02-03 29800.0
02-04 29800.0
02-05 29650.0
02-06 27700.0
02-07 27600.0
02-08 27850.0
02-09 29350.0
02-10 27900.0
02-11 26050.0
02-12 25600.0
02-13 26700.0
02-14 26750.0
02-15 26450.0
02-16 26500.0
02-17 27150.0
02-18 26900.0
02-19 27000.0
02-20 27800.0
02-21 29100.0
02-22 29800.0
02-23 26800.0
02-24 26200.0
02-25 26800.0
02-26 29100.0
02-27 28700.0
02-28 28200.0
02-29 32400.0
03-01 30750.0
03-02 30150.0
03-03 27650.0
03-04 27550.0
03-05 27450.0
03-06 26650.0
03-07 24966.67
03-08 25600.0
03-09 24766.67
03-10 24966.67
03-11 28150.0
03-12 32750.0
03-13 36325.0
03-14 38980.0
03-15 39320.0
03-16 42366.67
03-17 43583.33
03-18 41842.86
03-19 44312.5
03-20 40657.14
03-21 46600.0
03-22 43857.14
03-23 49312.5
03-24 47555.56
03-25 47822.22
03-26 48677.78
03-27 49622.22
03-28 49140.0
03-29 50140.0
03-30 51190.0
03-31 51422.22
04-01 54900.0
04-02 68036.36
04-03 69336.36
04-04 71090.91
04-05 70363.64
04-06 68872.73
04-07 68163.64
04-08 68345.45
04-09 59990.0
04-10 67809.09
04-11 69750.0
04-12 70860.0
04-13 70860.0
04-14 71020.0
04-15 74788.89
04-16 76455.56
04-17 79388.89
04-18 80622.22
04-19 81433.33
04-20 82411.11
04-21 78870.0
04-22 79600.0
04-23 81690.0
04-24 83780.0
04-25 86633.33
04-26 85900.0
04-27 86790.0
04-28 87160.0
04-29 87400.0
04-30 87710.0
05-01 86400.0
05-02 87333.33
05-03 87177.78
05-04 85622.22
05-05 83000.0
05-06 81300.0
05-07 79220.0
05-08 75200.0
05-09 72610.0
05-10 67366.67
05-11 68030.0
05-12 65550.0
05-13 63480.0
05-14 61844.44
05-15 63300.0
05-16 62222.22
05-17 61500.0
05-18 58750.0
05-19 58800.0
05-20 63422.22
05-21 61520.0
05-22 64780.0
05-23 68260.0
05-24 70810.0
05-25 71570.0
05-26 71890.0
05-27 70890.0
05-28 68850.0
05-29 68280.0
05-30 68180.0
05-31 67760.0
06-01 65880.0
06-02 64540.0
06-03 62520.0
06-04 60400.0
06-05 60088.89
06-06 59011.11
06-07 57711.11
06-08 53570.0
06-09 50970.0
06-10 50888.89
06-11 48888.89
06-12 47622.22
06-13 46830.0
06-14 46490.0
06-15 45144.44
06-16 45766.67
06-17 44590.0
06-18 45190.0
06-19 45211.11
06-20 44366.67
06-21 44944.44
06-22 45388.89
06-23 47200.0
06-24 47511.11
06-25 46488.89
06-26 45488.89
06-27 44433.33
06-28 44311.11
06-29 45088.89
06-30 46700.0
07-01 49600.0
07-02 49811.11
07-03 49977.78
07-04 49200.0
07-05 47770.0
07-06 46250.0
07-07 47700.0
07-08 46655.56
07-09 45988.89
07-10 43490.0
07-11 42120.0
07-12 41960.0
07-13 39400.0
07-14 44111.11
07-15 44166.67
07-16 44788.89
07-17 45400.0
07-18 46866.67
07-19 47777.78
07-20 48600.0
07-21 49033.33
07-22 47800.0
07-23 47411.11
07-24 46922.22
07-25 45522.22
07-26 43388.89
07-27 43888.89
07-28 42711.11
07-29 42533.33
07-30 41788.89
07-31 42111.11
08-01 42414.29
08-02 40155.56
08-03 38155.56
08-04 34500.0
08-05 32944.44
08-06 32566.67
08-07 32511.11
08-08 31222.22
08-09 30700.0
08-10 30655.56
08-11 29855.56
08-12 31288.89
08-13 31844.44
08-14 30844.44
08-15 30044.44
08-16 29675.0
08-17 29525.0
08-18 30475.0
08-19 31355.56
08-20 30888.89
08-21 32366.67
08-22 32412.5
08-23 33422.22
08-24 29041.25
08-25 28887.5
08-26 34311.11
08-27 33866.67
08-28 34522.22
08-29 34764.44
08-30 35488.89
08-31 35725.0
09-01 34300.0
09-02 34600.0
09-03 33316.67
09-04 32591.11
09-05 32366.67
09-06 32077.78
09-07 31377.78
09-08 31234.44
09-09 30888.89
09-10 30875.56
09-11 30914.44
09-12 31755.56
09-13 31355.56
09-14 31702.22
09-15 31235.56
09-16 30600.0
09-17 29755.56
09-18 29393.75
09-19 32600.0
09-20 30255.56
09-21 29288.89
09-22 30848.89
09-23 31488.89
09-24 33355.56
09-25 35322.22
09-26 37755.56
09-27 38722.22
09-28 38933.33
09-29 39100.0
09-30 39650.0
10-01 37257.14
10-02 34262.5
10-03 34650.0
10-04 34987.5
10-05 38888.89
10-06 39166.67
10-07 41433.33
10-08 42755.56
10-09 43588.89
10-10 43833.33
10-11 44455.56
10-12 44844.44
10-13 45544.44
10-14 45844.44
10-15 51362.5
10-16 47648.89
10-17 47766.67
10-18 47322.22
10-19 46611.11
10-20 46322.22
10-21 45128.57
10-22 44177.78
10-23 44822.22
10-24 44322.22
10-25 43944.44
10-26 44255.56
10-27 40600.0
10-28 40430.0
10-29 40260.0
10-30 40440.0
10-31 40610.0
11-01 39250.0
11-02 39411.11
11-03 38880.0
11-04 37620.0
11-05 37920.0
11-06 32488.89
11-07 31822.22
11-08 31988.89
11-09 31411.11
11-10 31077.78
11-11 31933.33
11-12 33044.44
11-13 32600.0
11-14 34930.0
11-15 34510.0
11-16 35520.0
11-17 34930.0
11-18 33144.44
11-19 33433.33
11-20 32811.11
11-21 34170.0
11-22 35588.89
11-23 33070.0
11-24 33022.22
11-25 33433.33
11-26 33160.0
11-27 33330.0
11-28 30000.0
11-29 31860.0
11-30 31370.0
12-01 31450.0
12-02 32300.0
12-03 33111.11
12-04 32033.33
12-05 32000.0
12-06 28775.0
12-07 31325.0
12-08 34375.0
12-09 33312.5
12-10 32875.0
12-11 29414.29
12-12 28071.43
12-13 27283.33
12-14 21380.0
12-15 20660.0
12-16 20940.0
12-17 24020.0
12-18 30975.0
12-19 33275.0
12-20 22200.0
12-21 22666.67
12-22 32400.0
12-23 30075.0
12-24 29400.0
12-25 31700.0
12-26 27800.0
12-27 29466.67
12-28 30533.33
12-29 27400.0
12-30 34466.67
12-31 33800.0

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index