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

* WHAT...Heat index values up to 102 expected. * WHERE...A portion of central Pennsylvania. * WHEN...From 11 AM this morning to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Juniata River At Lewistown, Pa Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015
01-01 4267.5
01-02 5281.25
01-03 5371.25
01-04 5963.75
01-05 6052.5
01-06 5079.63
01-07 4238.63
01-08 3671.13
01-09 3422.5
01-10 3952.5
01-11 6893.75
01-12 5030.0
01-13 4740.0
01-14 5517.5
01-15 4437.5
01-16 3796.25
01-17 3563.75
01-18 2846.25
01-19 2861.11
01-20 2834.44
01-21 3193.33
01-22 2943.75
01-23 3073.33
01-24 3088.75
01-25 3787.5
01-26 5092.86
01-27 6214.29
01-28 5738.57
01-29 6175.71
01-30 5408.57
01-31 4618.33
02-01 3966.67
02-02 3354.29
02-03 3577.14
02-04 5081.25
02-05 6868.75
02-06 3916.25
02-07 4293.33
02-08 4957.78
02-09 6345.56
02-10 4740.0
02-11 3838.89
02-12 3971.11
02-13 3883.0
02-14 4239.0
02-15 3843.0
02-16 3951.11
02-17 6793.33
02-18 6402.22
02-19 5642.22
02-20 4778.0
02-21 4611.82
02-22 4290.0
02-23 4176.0
02-24 4589.09
02-25 4036.0
02-26 5494.0
02-27 6213.64
02-28 5580.91
02-29 5290.0
03-01 5946.36
03-02 6775.45
03-03 6366.36
03-04 5505.45
03-05 5522.73
03-06 5074.55
03-07 5012.73
03-08 4504.55
03-09 4197.27
03-10 4679.09
03-11 6718.18
03-12 6637.27
03-13 6033.64
03-14 5130.91
03-15 4988.18
03-16 5516.36
03-17 5245.45
03-18 4899.09
03-19 4302.5
03-20 4650.0
03-21 4647.5
03-22 4261.82
03-23 4998.33
03-24 4413.33
03-25 4651.67
03-26 4347.5
03-27 4321.67
03-28 4370.0
03-29 4859.17
03-30 5805.0
03-31 5329.09
04-01 4467.5
04-02 4674.17
04-03 6228.33
04-04 7680.83
04-05 6696.67
04-06 5746.67
04-07 5694.17
04-08 6326.67
04-09 6150.83
04-10 5407.5
04-11 4532.5
04-12 4460.0
04-13 4303.64
04-14 4195.45
04-15 4343.0
04-16 4741.0
04-17 5745.0
04-18 5312.0
04-19 5036.0
04-20 4861.0
04-21 4867.27
04-22 4900.91
04-23 4275.45
04-24 3639.09
04-25 3519.09
04-26 3361.82
04-27 3370.0
04-28 3541.82
04-29 3387.27
04-30 3720.91
05-01 5017.27
05-02 5874.0
05-03 4976.0
05-04 4494.55
05-05 4835.45
05-06 7249.09
05-07 9455.45
05-08 8772.73
05-09 7098.18
05-10 5909.09
05-11 5718.18
05-12 4918.18
05-13 5595.45
05-14 5880.91
05-15 6114.0
05-16 4993.0
05-17 4466.0
05-18 4448.18
05-19 3779.09
05-20 3433.0
05-21 3562.73
05-22 3292.73
05-23 4148.18
05-24 4636.36
05-25 4233.64
05-26 3776.36
05-27 3510.0
05-28 3097.27
05-29 3134.55
05-30 3895.18
05-31 3777.45
06-01 4253.36
06-02 3387.82
06-03 2825.82
06-04 2657.55
06-05 3148.73
06-06 2477.3
06-07 2530.6
06-08 2403.45
06-09 2175.18
06-10 2666.36
06-11 3362.73
06-12 3501.6
06-13 2856.1
06-14 2524.6
06-15 2531.36
06-16 2286.36
06-17 2268.18
06-18 2633.91
06-19 3985.8
06-20 3337.3
06-21 2943.9
06-22 3130.2
06-23 2707.6
06-24 3305.0
06-25 3191.0
06-26 2674.0
06-27 2293.1
06-28 3996.7
06-29 4634.6
06-30 3256.2
07-01 2480.3
07-02 2171.0
07-03 2090.7
07-04 2071.6
07-05 2258.73
07-06 2367.64
07-07 2465.8
07-08 3394.1
07-09 2644.1
07-10 2145.27
07-11 1926.73
07-12 1789.55
07-13 1634.55
07-14 1569.91
07-15 1551.7
07-16 2109.1
07-17 1631.2
07-18 1749.5
07-19 2485.3
07-20 2044.7
07-21 1703.1
07-22 1704.6
07-23 1930.2
07-24 2423.5
07-25 2270.6
07-26 2954.6
07-27 2442.5
07-28 1975.5
07-29 1755.2
07-30 2150.4
07-31 1900.0
08-01 1935.89
08-02 1572.9
08-03 1795.0
08-04 2428.9
08-05 2404.4
08-06 1821.3
08-07 1664.1
08-08 1714.78
08-09 1702.67
08-10 1464.67
08-11 1296.6
08-12 1290.5
08-13 1550.8
08-14 1381.4
08-15 1538.1
08-16 1683.33
08-17 1329.11
08-18 1206.38
08-19 1497.33
08-20 1952.11
08-21 1341.78
08-22 1262.13
08-23 1464.9
08-24 1337.0
08-25 1187.89
08-26 1051.5
08-27 926.2
08-28 874.1
08-29 899.2
08-30 899.4
08-31 942.8
09-01 1125.8
09-02 4528.3
09-03 4355.7
09-04 2552.4
09-05 2426.8
09-06 2306.3
09-07 2391.7
09-08 2202.8
09-09 2057.3
09-10 3287.1
09-11 5026.5
09-12 4191.4
09-13 3570.9
09-14 3394.7
09-15 2953.4
09-16 2781.9
09-17 2581.6
09-18 2248.9
09-19 1905.2
09-20 1671.6
09-21 1430.9
09-22 1398.56
09-23 1245.6
09-24 2993.4
09-25 2211.9
09-26 2520.0
09-27 3444.6
09-28 2457.0
09-29 3251.0
09-30 2738.56
10-01 930.44
10-02 1052.22
10-03 873.0
10-04 922.67
10-05 1434.5
10-06 1437.8
10-07 1349.1
10-08 1247.5
10-09 1246.22
10-10 1188.8
10-11 1186.2
10-12 1349.0
10-13 1716.8
10-14 1357.9
10-15 1288.44
10-16 1063.5
10-17 1071.22
10-18 1018.8
10-19 957.5
10-20 911.8
10-21 847.3
10-22 838.8
10-23 1009.5
10-24 908.4
10-25 888.6
10-26 858.7
10-27 824.2
10-28 962.3
10-29 1397.1
10-30 2622.7
10-31 4280.8
11-01 2609.5
11-02 2606.1
11-03 1963.4
11-04 1720.7
11-05 1168.0
11-06 1742.22
11-07 1942.0
11-08 1825.33
11-09 1890.89
11-10 2146.11
11-11 3115.33
11-12 2639.33
11-13 4078.22
11-14 3199.3
11-15 2405.4
11-16 2322.9
11-17 2222.5
11-18 2327.67
11-19 2364.22
11-20 3223.0
11-21 2816.5
11-22 2668.89
11-23 3065.4
11-24 2318.0
11-25 2316.78
11-26 2547.9
11-27 2564.7
11-28 2651.4
11-29 2422.8
11-30 2063.2
12-01 1932.2
12-02 2064.2
12-03 2817.1
12-04 2655.3
12-05 2367.9
12-06 2226.56
12-07 1879.2
12-08 1802.0
12-09 1753.0
12-10 1669.2
12-11 1722.8
12-12 2053.2
12-13 1923.33
12-14 1821.25
12-15 1820.0
12-16 2480.0
12-17 4880.0
12-18 4247.14
12-19 3643.75
12-20 2954.11
12-21 2908.75
12-22 3777.78
12-23 4617.78
12-24 4424.11
12-25 4903.44
12-26 6068.78
12-27 4470.88
12-28 3286.56
12-29 4544.29
12-30 4978.75
12-31 4236.25

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index