Pennsylvania Water Temperatures
Current lake & river temperatures in Pennsylvania — updated daily from USGS sensors.
Pennsylvania — Ranked by Temperature
100 with data| # | Water Body | °F | °C | Condition | 🏊 | Date |
|---|---|---|---|---|---|---|
| 1 | Susquehanna River At Danville, Pa River | 80.1° | 26.7° | ☀️ Warm | 🏊 Excellent | Jun 4 |
| 2 | West Branch Susquehanna River At Lewisburg, Pa River | 80.1° | 26.7° | ☀️ Warm | 🏊 Excellent | Sep 29 |
| 3 | Cheat River At Lake Lynn, Pa River | 74.3° | 23.5° | 🌤️ Comfortable | ✅ Good | Sep 15 |
| 4 | Schuylkill River At Norristown, Pa River | 74.3° | 23.5° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 5 | Susquehanna River At Columbia, Pa River | 73.9° | 23.3° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 6 | Perkiomen Creek At Graterford, Pa River | 73.8° | 23.2° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 7 | Neshaminy Creek Near Langhorne, Pa River | 73.6° | 23.1° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 8 | West Conewago Creek Near Manchester, Pa River | 73.4° | 23° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 9 | Frankford Creek At Castor Ave, Philadelphia, Pa River | 71.6° | 22° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 10 | Trout Run At Avondale, Pa Lake | 71.4° | 21.9° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 11 | Codorus Creek Near Saginaw, Pa River | 70.9° | 21.6° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 12 | Brandywine Creek At Chadds Ford, Pa River | 70.5° | 21.4° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 13 | Swatara Creek Near Palmyra, Pa River | 70.5° | 21.4° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 14 | Connoquenessing Creek Near Zelienople, Pa River | 70.3° | 21.3° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 15 | Delaware River At Pennypack Woods Pa River | 70° | 21.1° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 16 | Darby Creek Near Darby, Pa River | 69.8° | 21° | 🌤️ Comfortable | ⚠️ Brisk | Sep 10 |
| 17 | Beaver River At Wampum, Pa River | 69.8° | 21° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 18 | Cobbs Creek At Mt. Moriah Cemetery, Philadelphia River | 69.8° | 21° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 19 | Susquehanna River Near Peach Bottom, Pa River | 69.8° | 21° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 20 | Delaware River At Chester Pa River | 69.8° | 21° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 21 | French Creek Near Phoenixville, Pa River | 69.8° | 21° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 22 | Delaware River At Pond Eddy Ny River | 69.6° | 20.9° | 🌤️ Comfortable | ⚠️ Brisk | Jun 5 |
| 23 | Delaware River At Fort Mifflin At Philadelphia, Pa River | 69.6° | 20.9° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 24 | Delaware River At Barryville Ny River | 69.4° | 20.8° | 🌤️ Comfortable | ⚠️ Brisk | Jun 5 |
| 25 | Allegheny River At Lock & Dam 5 Near Freeport, Pa River | 69.3° | 20.7° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
More Pennsylvania Resources
❓ Pennsylvania Water Temperature FAQ
What is the warmest lake in Pennsylvania today?
Based on our latest USGS data, Susquehanna River At Danville, Pa is currently the warmest water body in Pennsylvania at 80.1°F.
Which Pennsylvania lakes are good for swimming right now?
Lakes with water temperatures above 72°F are generally comfortable for swimming. Currently, Pennsylvania's average water temperature is 67.8°F — check individual lakes above for specific conditions.
What is the best water temperature for fishing in Pennsylvania?
The optimal temperature range depends on your target species. For bass fishing, look for water bodies between 65–75°F. For trout, target the coldest water bodies in Pennsylvania — typically 50–65°F. Use the table above to identify which lakes are in the ideal range for your target species.
🔬 Data Methodology & Sources
Water temperature readings on this site are collected from USGS (United States Geological Survey) monitoring stations installed at lakes, rivers, and reservoirs across the country. Sensors measure water surface temperature in Celsius, which is converted to Fahrenheit for display. Data is retrieved and stored daily. Temperatures shown reflect the most recent available sensor reading for each water body, typically from the past 1–30 days depending on station reporting frequency.
⚠️ Water temperatures can vary significantly across a water body due to depth, currents, and time of day. Sensor readings represent conditions at the monitoring station location. Always exercise caution when swimming and consult local authorities for official safety advisories.