Overview Realtime Historical Map View
Heat Advisory
2026-07-16T20:00:00-04:00

* WHAT...Heat index values around 100 expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...From noon today to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Schuylkill River At Norristown, Pa 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 4248.33
01-02 4417.5
01-03 3772.17
01-04 3103.64
01-05 3446.25
01-06 3321.5
01-07 3823.5
01-08 3033.2
01-09 2722.5
01-10 6825.3
01-11 5568.18
01-12 5151.67
01-13 4840.83
01-14 4495.83
01-15 3930.0
01-16 3250.0
01-17 3443.85
01-18 3115.83
01-19 3195.38
01-20 3752.31
01-21 3581.58
01-22 2774.58
01-23 2606.6
01-24 3355.0
01-25 5622.18
01-26 6265.55
01-27 4546.45
01-28 4193.33
01-29 4801.0
01-30 3613.91
01-31 3206.27
02-01 4107.92
02-02 3067.85
02-03 3040.23
02-04 5025.69
02-05 5656.46
02-06 4413.67
02-07 3484.46
02-08 3813.54
02-09 3246.77
02-10 2841.54
02-11 3106.92
02-12 3639.14
02-13 3215.31
02-14 3362.54
02-15 3198.33
02-16 3027.75
02-17 5827.5
02-18 4047.27
02-19 3466.36
02-20 3251.54
02-21 3600.77
02-22 4022.31
02-23 3560.0
02-24 3591.54
02-25 5115.83
02-26 5191.67
02-27 4422.31
02-28 4486.15
02-29 4480.0
03-01 5150.77
03-02 4790.0
03-03 5340.0
03-04 4273.57
03-05 4292.86
03-06 4496.43
03-07 4232.14
03-08 3757.14
03-09 3452.14
03-10 4492.14
03-11 4874.29
03-12 5205.71
03-13 6134.29
03-14 4810.0
03-15 5097.86
03-16 4203.57
03-17 3784.29
03-18 3933.57
03-19 3510.0
03-20 3935.71
03-21 3448.0
03-22 4365.71
03-23 4112.67
03-24 5032.0
03-25 5021.33
03-26 3670.0
03-27 3308.0
03-28 3504.67
03-29 3980.0
03-30 3546.67
03-31 4307.14
04-01 4934.0
04-02 4362.0
04-03 4298.67
04-04 5330.0
04-05 4468.67
04-06 3590.0
04-07 4748.67
04-08 5613.27
04-09 4390.0
04-10 3599.33
04-11 3035.47
04-12 2888.57
04-13 3389.57
04-14 4771.57
04-15 3427.23
04-16 5519.38
04-17 4557.08
04-18 3377.46
04-19 3468.38
04-20 3254.38
04-21 3732.07
04-22 3125.71
04-23 3186.43
04-24 2779.23
04-25 2579.29
04-26 2597.14
04-27 3495.0
04-28 2693.57
04-29 2510.71
04-30 2629.29
05-01 9252.0
05-02 5438.57
05-03 4011.43
05-04 3452.0
05-05 3274.67
05-06 3912.67
05-07 4071.33
05-08 4390.67
05-09 3834.67
05-10 3773.33
05-11 3398.0
05-12 3270.67
05-13 3594.67
05-14 4457.33
05-15 3463.36
05-16 3518.71
05-17 4695.71
05-18 4266.0
05-19 3399.8
05-20 3666.43
05-21 4802.67
05-22 3363.8
05-23 3456.13
05-24 3167.93
05-25 3067.07
05-26 2739.47
05-27 2444.2
05-28 2983.8
05-29 2778.27
05-30 3457.73
05-31 3345.47
06-01 3184.67
06-02 2815.53
06-03 3268.2
06-04 2954.73
06-05 2496.53
06-06 2578.21
06-07 2298.93
06-08 3182.13
06-09 2211.13
06-10 2319.8
06-11 4634.33
06-12 3140.29
06-13 2775.86
06-14 3768.71
06-15 2693.93
06-16 2283.0
06-17 2075.47
06-18 1943.93
06-19 2018.07
06-20 2185.21
06-21 3092.0
06-22 2380.14
06-23 1942.14
06-24 1932.14
06-25 2317.14
06-26 1980.64
06-27 2388.07
06-28 2203.86
06-29 2518.79
06-30 1892.71
07-01 1660.86
07-02 3896.0
07-03 2808.36
07-04 2271.36
07-05 1858.47
07-06 1903.2
07-07 1997.64
07-08 1817.86
07-09 2476.0
07-10 3294.4
07-11 3046.53
07-12 5079.73
07-13 1917.07
07-14 1990.4
07-15 1845.87
07-16 2785.79
07-17 1980.79
07-18 2234.93
07-19 2069.57
07-20 1483.5
07-21 1375.79
07-22 1429.57
07-23 1824.07
07-24 2644.71
07-25 3245.07
07-26 3786.54
07-27 2417.86
07-28 2037.79
07-29 2161.5
07-30 1773.29
07-31 1558.15
08-01 1758.46
08-02 1603.71
08-03 2382.23
08-04 7938.79
08-05 4412.43
08-06 3363.64
08-07 2105.14
08-08 3083.15
08-09 2327.69
08-10 1776.0
08-11 1640.71
08-12 1982.71
08-13 1805.21
08-14 4865.71
08-15 4026.79
08-16 2910.23
08-17 2159.54
08-18 1763.33
08-19 1790.23
08-20 2636.62
08-21 1779.08
08-22 1881.17
08-23 2377.14
08-24 2642.23
08-25 1818.46
08-26 1443.43
08-27 1303.14
08-28 2256.0
08-29 3910.57
08-30 2094.57
08-31 1521.64
09-01 1555.57
09-02 1706.38
09-03 4092.0
09-04 2480.07
09-05 2074.86
09-06 1976.07
09-07 4234.21
09-08 4645.21
09-09 4194.71
09-10 5210.64
09-11 3885.21
09-12 3333.07
09-13 3215.79
09-14 2677.57
09-15 2222.43
09-16 2021.14
09-17 1666.57
09-18 1601.29
09-19 1942.0
09-20 2187.93
09-21 1669.43
09-22 1528.31
09-23 1450.14
09-24 2787.71
09-25 2746.29
09-26 2728.21
09-27 2007.29
09-28 1766.57
09-29 2912.57
09-30 2684.92
10-01 2030.54
10-02 1730.31
10-03 1929.77
10-04 1895.31
10-05 2198.36
10-06 2019.14
10-07 1624.86
10-08 1446.07
10-09 1545.62
10-10 1493.64
10-11 1480.57
10-12 2114.0
10-13 2063.5
10-14 2112.29
10-15 1902.15
10-16 1825.93
10-17 2358.0
10-18 1964.86
10-19 1660.86
10-20 2130.5
10-21 2120.29
10-22 1776.79
10-23 1666.15
10-24 1603.77
10-25 1486.36
10-26 1499.77
10-27 1588.08
10-28 2367.15
10-29 2026.5
10-30 4150.23
10-31 4402.29
11-01 3646.86
11-02 3851.93
11-03 3039.64
11-04 3100.5
11-05 1872.15
11-06 2092.38
11-07 2587.38
11-08 2213.54
11-09 1915.15
11-10 2508.31
11-11 1921.0
11-12 1840.15
11-13 2150.92
11-14 2528.14
11-15 2072.0
11-16 2137.29
11-17 2701.36
11-18 2575.08
11-19 2100.31
11-20 2053.46
11-21 1883.57
11-22 1866.54
11-23 3007.57
11-24 3520.15
11-25 4374.92
11-26 3069.07
11-27 3418.29
11-28 3252.64
11-29 2630.21
11-30 2642.57
12-01 4981.07
12-02 2848.21
12-03 2976.43
12-04 2906.93
12-05 2456.93
12-06 2546.54
12-07 2818.38
12-08 4192.79
12-09 3211.86
12-10 3398.64
12-11 3406.64
12-12 3093.36
12-13 2624.64
12-14 2367.62
12-15 2393.69
12-16 3182.67
12-17 3121.0
12-18 3615.54
12-19 4836.15
12-20 3513.38
12-21 4753.0
12-22 4797.92
12-23 4359.38
12-24 5696.15
12-25 6719.23
12-26 5562.31
12-27 4648.92
12-28 5098.46
12-29 5444.55
12-30 5300.83
12-31 4464.17

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index