Overview Realtime Historical Map View
Heat Advisory
2026-08-06T22:00:00-07:00

* WHAT...Hot conditions with high temperatures up to 85 to 90 degrees expected and low temperatures 58 to 62 degrees. This will pose a moderate risk of heat-related illness. * WHERE...Portions of northwest and west central Washington. * WHEN...From 10 AM Wednesday to 10 PM PDT Thursday. * IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration. * ADDITIONAL DETAILS...Warm temperatures overnight will bring limited relief for the interior.

Snohomish River Near Monroe, Wa 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 11153.33
01-02 11783.64
01-03 11824.55
01-04 13455.83
01-05 13000.0
01-06 16246.67
01-07 16945.83
01-08 17798.33
01-09 16424.55
01-10 14471.67
01-11 12720.83
01-12 13966.67
01-13 20164.55
01-14 19255.45
01-15 14938.18
01-16 11796.67
01-17 10743.08
01-18 10836.36
01-19 12010.83
01-20 10946.92
01-21 12340.83
01-22 12206.15
01-23 12124.17
01-24 13320.83
01-25 13834.55
01-26 12941.82
01-27 11936.92
01-28 14534.17
01-29 11814.67
01-30 12289.71
01-31 12768.29
02-01 15886.14
02-02 16206.43
02-03 15286.43
02-04 11721.54
02-05 13906.43
02-06 15384.62
02-07 16569.23
02-08 17960.0
02-09 15014.29
02-10 12233.85
02-11 11488.46
02-12 10398.57
02-13 10177.14
02-14 10656.15
02-15 12373.57
02-16 11247.86
02-17 9961.54
02-18 10303.85
02-19 9562.86
02-20 8902.14
02-21 9026.43
02-22 10154.29
02-23 12831.43
02-24 12307.14
02-25 10618.33
02-26 10897.69
02-27 9402.14
02-28 8565.0
02-29 12575.0
03-01 11420.0
03-02 12468.57
03-03 12172.86
03-04 11368.57
03-05 10825.71
03-06 11375.0
03-07 11361.43
03-08 10535.71
03-09 10352.86
03-10 11470.71
03-11 10340.0
03-12 9468.57
03-13 10456.43
03-14 11075.0
03-15 11593.57
03-16 11797.86
03-17 12880.0
03-18 12307.14
03-19 14088.67
03-20 13905.71
03-21 14318.0
03-22 13911.43
03-23 11405.33
03-24 11592.67
03-25 13277.33
03-26 12428.67
03-27 11584.67
03-28 11664.67
03-29 11788.67
03-30 11980.67
03-31 11795.71
04-01 10468.67
04-02 10212.67
04-03 9923.33
04-04 9502.67
04-05 9648.0
04-06 10572.14
04-07 10912.0
04-08 11481.33
04-09 12066.15
04-10 12330.67
04-11 12586.67
04-12 12486.43
04-13 11385.0
04-14 10989.29
04-15 11435.38
04-16 10789.23
04-17 10755.83
04-18 11596.15
04-19 11288.46
04-20 11989.23
04-21 13178.57
04-22 12413.57
04-23 12148.57
04-24 12885.0
04-25 13182.31
04-26 12337.14
04-27 12285.71
04-28 12385.0
04-29 11964.29
04-30 11842.14
05-01 12308.67
05-02 11465.0
05-03 11390.0
05-04 12828.0
05-05 13652.0
05-06 14174.67
05-07 13882.0
05-08 13534.29
05-09 13065.33
05-10 12697.86
05-11 12690.67
05-12 12672.67
05-13 12523.33
05-14 13576.92
05-15 14754.62
05-16 16560.77
05-17 16558.57
05-18 14929.33
05-19 13342.0
05-20 12542.86
05-21 12194.0
05-22 12369.33
05-23 12860.0
05-24 13059.33
05-25 11915.33
05-26 11439.33
05-27 11170.67
05-28 11459.33
05-29 11901.33
05-30 11985.33
05-31 11766.67
06-01 11024.67
06-02 11772.0
06-03 11885.33
06-04 11543.33
06-05 10350.71
06-06 10911.43
06-07 10945.71
06-08 10709.29
06-09 11271.33
06-10 11572.0
06-11 11800.67
06-12 10853.57
06-13 10073.57
06-14 11008.57
06-15 10522.67
06-16 9650.67
06-17 9616.67
06-18 9561.33
06-19 9979.29
06-20 9636.43
06-21 10065.71
06-22 9729.29
06-23 9290.0
06-24 9276.43
06-25 8953.57
06-26 8631.43
06-27 8548.57
06-28 8703.57
06-29 8874.29
06-30 8629.29
07-01 8094.29
07-02 8029.29
07-03 7467.86
07-04 7460.0
07-05 6388.0
07-06 5991.33
07-07 6061.43
07-08 6181.43
07-09 6010.0
07-10 5707.33
07-11 5468.57
07-12 5323.33
07-13 5277.69
07-14 4905.33
07-15 4722.67
07-16 4495.0
07-17 4325.33
07-18 4273.08
07-19 4357.14
07-20 3725.0
07-21 4066.67
07-22 4053.08
07-23 3733.33
07-24 3636.67
07-25 3911.43
07-26 3718.67
07-27 3574.0
07-28 3432.0
07-29 3289.33
07-30 3287.86
07-31 2974.67
08-01 2903.85
08-02 2812.14
08-03 2663.33
08-04 2591.33
08-05 2593.57
08-06 2550.0
08-07 2522.86
08-08 2593.85
08-09 2601.54
08-10 2565.0
08-11 2362.86
08-12 2452.31
08-13 2344.29
08-14 2622.14
08-15 2414.29
08-16 2364.62
08-17 3099.09
08-18 2664.17
08-19 2477.69
08-20 2353.85
08-21 2251.54
08-22 2160.77
08-23 2077.86
08-24 2244.17
08-25 2057.69
08-26 1971.43
08-27 1915.0
08-28 1911.54
08-29 1794.29
08-30 1854.29
08-31 2161.54
09-01 2165.0
09-02 2201.43
09-03 2145.71
09-04 2310.71
09-05 2034.29
09-06 1934.29
09-07 1971.43
09-08 1855.0
09-09 1930.71
09-10 1833.08
09-11 1811.43
09-12 1794.29
09-13 1836.92
09-14 1805.71
09-15 1792.31
09-16 1883.57
09-17 1885.0
09-18 2250.77
09-19 2700.0
09-20 2620.71
09-21 2750.77
09-22 2287.14
09-23 2111.43
09-24 2612.86
09-25 3072.86
09-26 3317.86
09-27 3256.43
09-28 3697.86
09-29 4718.57
09-30 4837.69
10-01 6082.5
10-02 4703.08
10-03 3976.67
10-04 3219.23
10-05 2850.0
10-06 2695.0
10-07 2667.86
10-08 2948.57
10-09 4737.14
10-10 4701.43
10-11 4943.57
10-12 6392.14
10-13 6052.31
10-14 5545.71
10-15 7213.08
10-16 6295.38
10-17 7133.85
10-18 5197.86
10-19 7393.85
10-20 9613.85
10-21 7423.85
10-22 8758.33
10-23 12815.83
10-24 10295.38
10-25 8053.08
10-26 6694.62
10-27 8380.0
10-28 8453.85
10-29 11678.57
10-30 14197.14
10-31 14813.85
11-01 11790.0
11-02 15420.71
11-03 14586.92
11-04 11668.57
11-05 18830.71
11-06 17504.62
11-07 15063.08
11-08 14434.62
11-09 11551.54
11-10 9656.92
11-11 8883.85
11-12 9266.92
11-13 16519.23
11-14 14293.57
11-15 17918.57
11-16 16750.0
11-17 12238.33
11-18 11643.08
11-19 11046.92
11-20 12976.15
11-21 12547.14
11-22 12456.92
11-23 10132.31
11-24 13013.85
11-25 11834.62
11-26 14279.23
11-27 16411.67
11-28 15810.0
11-29 17591.43
11-30 13208.57
12-01 11722.86
12-02 12270.0
12-03 11590.0
12-04 10702.14
12-05 11003.57
12-06 14483.85
12-07 13030.77
12-08 12992.86
12-09 16811.43
12-10 15737.86
12-11 17090.71
12-12 18339.29
12-13 15359.23
12-14 13235.0
12-15 10454.62
12-16 11180.0
12-17 11587.5
12-18 13000.0
12-19 13914.62
12-20 13926.67
12-21 15991.54
12-22 16540.0
12-23 14064.62
12-24 13753.08
12-25 13520.83
12-26 12960.0
12-27 11561.82
12-28 12031.82
12-29 12541.67
12-30 12658.18
12-31 11563.33

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index