Lock Haven, Pennsylvania Weather
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Climate of Lock Haven: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Lock Haven, with average daytime highs around 28°C. January is the coolest, when nights typically fall to about -8°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 36°C, so the seasons feel very different from each other.
The area receives about 1080 mm of rain in a typical year. Most of it falls from May to July and September to October, and September is the wettest month at roughly 109 mm.
For outdoor plans and travel, August usually offers the most comfortable weather in Lock Haven, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 0° | -8° | 67 mm | 88% |
| Feb | 1° | -8° | 64 mm | 87% |
| Mar | 7° | -4° | 78 mm | 82% |
| Apr | 15° | 2° | 88 mm | 79% |
| May | 21° | 9° | 107 mm | 79% |
| Jun | 25° | 14° | 104 mm | 78% |
| Jul | 28° | 16° | 106 mm | 72% |
| Aug | 28° | 16° | 96 mm | 70% |
| Sep | 24° | 12° | 109 mm | 72% |
| Oct | 16° | 5° | 100 mm | 78% |
| Nov | 9° | -1° | 73 mm | 83% |
| Dec | 2° | -5° | 86 mm | 88% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Lock Haven. Values describe typical conditions, not a forecast.
About Lock Haven weather
Lock Haven is a place in Pennsylvania's humid continental climate, from the Appalachians to the Delaware valley, located about 228 km east of Pittsburgh. Lock Haven gets warm, humid summers (June–August) each year. Lock Haven closes out the year with cold winters (December–February) with regular snow. This page shows live, auto-refreshing weather for Lock Haven: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/New_York.
Frequently asked questions
Lock Haven is about 228 km east of Pittsburgh, in Pennsylvania.
Lock Haven sees cold winters (December–February) with regular snow.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Lock Haven's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Lock Haven, with average daytime highs of about 28°C and nights around 16°C.
The coldest nights come in January, when the average low is about -8°C and daytime highs reach around 0°C. Frost is possible on clear, calm nights.
Lock Haven receives about 1080 mm of rain in a typical year. September is the wettest month at roughly 109 mm, and the main rainy period is May to July and September to October.
August usually offers the most comfortable weather in Lock Haven, with mild daytime temperatures and little rain.
In November Lock Haven typically sees daytime highs near 9°C and lows near -1°C, with about 73 mm of rain over the month and average humidity around 83%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
The current temperature for Lock Haven updates automatically at the top of this page — scroll to the hourly strip below to see how it's expected to change over the day.
Lock Haven's day-to-day weather follows the broader pattern of Pennsylvania described above. See the hourly weather forecast or the air quality index for more detail.