Stillwater, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Stillwater, a borough in Columbia County, Pennsylvania.
Tonight
56°F
Rain Showers
Rain showers. Mostly cloudy, with a low around 56. Southeast wind 2 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Stillwater
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Rain Showers | 2 to 7 mph SE | 88% |
| Sunday | 73°F | Rain Showers | 3 to 7 mph S | 97% |
| Sunday Night | 50°F | Showers And Thunderstorms Likely then Mostly Cloudy | 3 to 7 mph N | 66% |
| Monday | 70°F | Partly Sunny | 6 mph NE | 7% |
| Monday Night | 47°F | Chance Rain Showers | 6 mph NE | 38% |
| Tuesday | 64°F | Chance Rain Showers | 6 mph NE | 39% |
| Tuesday Night | 46°F | Chance Rain Showers then Mostly Cloudy | 5 to 9 mph E | 32% |
| Wednesday | 63°F | Slight Chance Rain Showers | 9 mph E | 20% |
| Wednesday Night | 45°F | Mostly Cloudy then Slight Chance Rain Showers | 8 mph E | 23% |
| Thursday | 63°F | Slight Chance Rain Showers | 8 mph NE | 23% |
| Thursday Night | 45°F | Slight Chance Rain Showers | 6 mph NE | 20% |
| Friday | 66°F | Chance Rain Showers | 8 mph N | 26% |
| Friday Night | 46°F | Chance Rain Showers | 7 to 10 mph N | 26% |
| Saturday | 70°F | Slight Chance Rain Showers | 10 mph N | 20% |
Forecast source: National Weather Service (api.weather.gov) for Stillwater (41.153, -76.376). Updated through the day.
Growing snapshot for Stillwater
Last spring frost
May 4
First fall frost
Oct 11
Growing season
159 days
Hardiness zone
6b
More local growing data for Stillwater: nearby ZIP 17859 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
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Benton
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East Berwick
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Eyers Grove
Fernville
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Jamison City
Jerseytown
Jonestown
Lightstreet
Lime Ridge
Locustdale
Mainville
Mifflinville
Millville
Numidia
Orangeville
Rohrsburg
Climate data from the nearest NOAA station, Benton 3 Ne, Pa (8.5 mi from Stillwater). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.