Overview Realtime Historical Map View
Heat Advisory
2026-07-15T20:00:00-04:00

* WHAT...Heat index values up to 103 expected. * WHERE...Berks, Lehigh, Northampton, Eastern Chester, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...From 10 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Lehigh River At Glendon, Pa Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015
01-01 4225.0
01-02 4130.0
01-03 3977.5
01-04 3980.0
01-05 3562.5
01-06 3576.25
01-07 3245.0
01-08 3062.5
01-09 2947.5
01-10 4970.0
01-11 5361.25
01-12 4861.25
01-13 4507.5
01-14 4650.0
01-15 4283.75
01-16 3800.0
01-17 3488.89
01-18 2648.75
01-19 2865.56
01-20 2937.78
01-21 3141.11
01-22 2683.78
01-23 2628.75
01-24 3581.11
01-25 5724.33
01-26 5418.75
01-27 4892.75
01-28 4082.22
01-29 4550.0
01-30 3614.67
01-31 3152.22
02-01 2802.22
02-02 2575.56
02-03 2631.75
02-04 3728.75
02-05 4666.25
02-06 3153.75
02-07 3075.56
02-08 3335.56
02-09 3154.44
02-10 2782.22
02-11 2733.33
02-12 3178.22
02-13 2735.82
02-14 2605.0
02-15 2417.91
02-16 2401.0
02-17 3953.6
02-18 3158.9
02-19 2850.2
02-20 2838.82
02-21 2822.0
02-22 2972.64
02-23 2849.82
02-24 3015.91
02-25 4154.1
02-26 3739.0
02-27 3787.73
02-28 3513.55
02-29 5143.33
03-01 3581.91
03-02 3692.91
03-03 4000.73
03-04 3802.82
03-05 3581.82
03-06 3980.0
03-07 3956.36
03-08 3734.55
03-09 3496.36
03-10 3985.45
03-11 3999.09
03-12 4077.27
03-13 4166.36
03-14 3889.09
03-15 3993.64
03-16 3661.82
03-17 3710.91
03-18 3798.18
03-19 3807.5
03-20 3772.73
03-21 3278.33
03-22 3692.73
03-23 3748.33
03-24 4230.83
03-25 4034.17
03-26 3765.0
03-27 3440.0
03-28 3308.33
03-29 3531.82
03-30 3473.33
03-31 3441.82
04-01 4335.83
04-02 3655.83
04-03 3687.5
04-04 4984.17
04-05 4565.0
04-06 4186.67
04-07 4388.33
04-08 5125.0
04-09 5047.5
04-10 4063.33
04-11 3633.33
04-12 3207.27
04-13 3123.64
04-14 4480.91
04-15 3758.0
04-16 4119.0
04-17 3863.0
04-18 3529.0
04-19 3478.0
04-20 3362.0
04-21 3517.27
04-22 3224.55
04-23 3191.82
04-24 3013.64
04-25 2701.82
04-26 2760.0
04-27 3200.0
04-28 2886.36
04-29 2653.64
04-30 2712.73
05-01 3451.82
05-02 4288.0
05-03 4012.0
05-04 3596.36
05-05 3387.27
05-06 3867.27
05-07 4191.82
05-08 4840.91
05-09 4227.27
05-10 4555.45
05-11 3847.27
05-12 3440.0
05-13 3702.73
05-14 4209.09
05-15 3722.0
05-16 3352.0
05-17 3463.0
05-18 3771.82
05-19 3356.36
05-20 3559.0
05-21 3372.73
05-22 3052.73
05-23 3024.55
05-24 3460.0
05-25 2950.91
05-26 2610.0
05-27 2419.09
05-28 2309.09
05-29 2585.45
05-30 3019.09
05-31 2944.55
06-01 3038.27
06-02 2887.27
06-03 2774.09
06-04 2615.0
06-05 2372.82
06-06 2274.8
06-07 2289.82
06-08 2215.45
06-09 2257.36
06-10 2393.09
06-11 2372.55
06-12 3106.4
06-13 2765.0
06-14 2466.6
06-15 2007.27
06-16 2355.45
06-17 2103.73
06-18 1994.0
06-19 2261.5
06-20 2224.1
06-21 2314.9
06-22 2363.6
06-23 2038.9
06-24 2234.5
06-25 2312.7
06-26 2025.1
06-27 2205.0
06-28 2318.0
06-29 2259.0
06-30 1974.0
07-01 2095.9
07-02 2965.1
07-03 2586.6
07-04 2268.6
07-05 1990.0
07-06 1891.82
07-07 2187.0
07-08 2462.0
07-09 2248.0
07-10 3088.18
07-11 2690.91
07-12 2645.27
07-13 2149.82
07-14 1928.27
07-15 2243.8
07-16 2253.0
07-17 2295.2
07-18 2354.7
07-19 2227.0
07-20 1769.6
07-21 1619.7
07-22 1814.6
07-23 2838.2
07-24 2406.9
07-25 3517.8
07-26 3263.2
07-27 2776.1
07-28 2898.2
07-29 2540.4
07-30 2305.1
07-31 2023.0
08-01 1727.78
08-02 1887.0
08-03 2193.3
08-04 5981.6
08-05 6337.8
08-06 2841.8
08-07 2514.6
08-08 2661.33
08-09 2275.0
08-10 1951.56
08-11 1800.2
08-12 2153.5
08-13 2046.2
08-14 4251.0
08-15 2627.9
08-16 2922.33
08-17 2439.67
08-18 2380.38
08-19 2637.89
08-20 2293.44
08-21 1841.22
08-22 2455.5
08-23 2517.0
08-24 3654.44
08-25 3241.67
08-26 2810.0
08-27 2730.6
08-28 2528.6
08-29 1881.0
08-30 1936.9
08-31 1993.4
09-01 2107.8
09-02 6132.7
09-03 3484.3
09-04 2807.2
09-05 2988.1
09-06 2806.5
09-07 2762.4
09-08 2487.7
09-09 2048.6
09-10 2358.4
09-11 2953.7
09-12 2537.2
09-13 2819.9
09-14 2228.9
09-15 1908.8
09-16 1765.6
09-17 1694.9
09-18 1696.9
09-19 2318.6
09-20 1907.3
09-21 1707.7
09-22 1930.56
09-23 1770.0
09-24 2629.5
09-25 2110.9
09-26 2601.2
09-27 2307.9
09-28 2089.8
09-29 2343.8
09-30 2286.22
10-01 1730.0
10-02 1424.44
10-03 1314.33
10-04 1287.22
10-05 2074.5
10-06 2348.1
10-07 2349.0
10-08 2639.2
10-09 2541.78
10-10 2027.0
10-11 2225.2
10-12 2703.9
10-13 2387.0
10-14 2308.6
10-15 1786.33
10-16 1689.2
10-17 1856.3
10-18 1656.9
10-19 1546.2
10-20 1407.6
10-21 1357.2
10-22 1349.1
10-23 1379.0
10-24 1343.3
10-25 1317.5
10-26 1307.4
10-27 1393.1
10-28 2321.1
10-29 1885.2
10-30 2752.7
10-31 2903.9
11-01 3152.5
11-02 3259.9
11-03 4326.9
11-04 3108.8
11-05 2008.89
11-06 2295.0
11-07 2449.56
11-08 2190.22
11-09 1987.89
11-10 2143.33
11-11 1926.33
11-12 1991.67
11-13 2711.56
11-14 2639.4
11-15 2466.8
11-16 2475.8
11-17 2403.6
11-18 2282.33
11-19 2141.56
11-20 2017.0
11-21 1967.9
11-22 2033.11
11-23 2112.7
11-24 2038.0
11-25 2752.56
11-26 2484.1
11-27 3150.9
11-28 2768.9
11-29 2631.2
11-30 2545.1
12-01 3431.1
12-02 2898.1
12-03 2847.6
12-04 2631.8
12-05 2464.7
12-06 2476.44
12-07 2514.1
12-08 2397.5
12-09 2202.9
12-10 2070.9
12-11 2407.5
12-12 2756.5
12-13 2492.2
12-14 2321.78
12-15 2284.89
12-16 2213.22
12-17 2810.56
12-18 3102.11
12-19 4979.11
12-20 3956.67
12-21 3936.25
12-22 4667.78
12-23 3834.44
12-24 4308.89
12-25 4612.22
12-26 5666.67
12-27 4821.25
12-28 5017.78
12-29 6047.14
12-30 5406.25
12-31 4681.25

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index