National Weather ServicePennsylvaniaFrost AdvisoryArchive to October 1, 2026
Frost Advisories in Pennsylvania
The National Weather Service issued 44 frost advisories for Pennsylvania in 2025 and 34 a year on average in 2008-2025; in 2021-2025 it had the 3rd most of any state. 2026 through September: 31, 56% above the average of 20 for those months in 2008-2025. York was covered most often (75 times since 2008).
How many frost advisories does Pennsylvania get?
Every frost advisory that covered part of Pennsylvania. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 31 |
| 2025 | 44 |
| 2024 | 45 |
| 2023 | 43 |
| 2022 | 35 |
| 2021 | 20 |
| 2020 | 46 |
| 2019 | 18 |
| 2018 | 14 |
| 2017 | 29 |
| 2016 | 28 |
| 2015 | 17 |
| 2014 | 30 |
| 2013 | 42 |
| 2012 | 44 |
| 2011 | 22 |
| 2010 | 41 |
| 2009 | 42 |
| 2008 | 43 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does Pennsylvania get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in Pennsylvania?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| York | 75 | 21 | May 3, 2026 |
| Dauphin | 73 | 25 | May 3, 2026 |
| Lancaster | 72 | 23 | May 3, 2026 |
| McKean | 71 | 24 | September 25, 2026 |
| Adams | 70 | 18 | May 3, 2026 |
| Berks | 70 | 19 | May 3, 2026 |
| Northampton | 67 | 15 | May 3, 2026 |
| Potter | 67 | 23 | September 25, 2026 |
| Cumberland | 66 | 19 | May 3, 2026 |
| Lehigh | 66 | 14 | May 3, 2026 |
| Lebanon | 64 | 20 | May 3, 2026 |
| Cameron | 63 | 21 | May 11, 2026 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
What is a frost advisory?
A frost advisory means frost is expected on clear, calm nights during the growing season, with temperatures a few degrees above freezing. An advisory is issued for a hazard less serious than a warning that can still cause inconvenience or danger if people are not careful. The national record · Every warning type in Pennsylvania.