Forest Lake, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Forest Lake, a community in Susquehanna County, Pennsylvania.
Today
81°F
Areas Of Fog then Sunny
Areas of fog before 9am. Sunny, with a high near 81. Southwest wind around 2 mph.
7-day forecast for Forest Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Areas Of Fog then Sunny | 2 mph SW | 0% |
| Tonight | 59°F | Partly Cloudy | 2 mph SE | 0% |
| Wednesday | 81°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph S | 15% |
| Wednesday Night | 64°F | Chance Showers And Thunderstorms | 5 mph S | 39% |
| Thursday | 83°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph S | 81% |
| Thursday Night | 65°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph SW | 81% |
| Friday | 83°F | Showers And Thunderstorms Likely | 5 mph SW | 72% |
| Friday Night | 64°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 mph SW | 72% |
| Saturday | 82°F | Showers And Thunderstorms Likely | 2 to 6 mph SW | 65% |
| Saturday Night | 63°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph SW | 65% |
| Sunday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph SW | 19% |
| Sunday Night | 64°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 23% |
| Monday | 84°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 9 mph W | 42% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 7 mph W | 42% |
Forecast source: National Weather Service (api.weather.gov) for Forest Lake (41.888, -75.959). Updated through the day.
Growing snapshot for Forest Lake
Last spring frost
May 14
First fall frost
Oct 2
Growing season
141 days
Hardiness zone
5b
More local growing data for Forest Lake: nearby ZIP 18801 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Browndale
Forest City
Friendsville
Great Bend
Hallstead
Harford
Hop Bottom
Lakeside
Lanesboro
Laurel Lake
Little Meadows
Meshoppen
Montrose
New Milford
Nicholson
Oakland
South Montrose
Springville
Susquehanna Depot
Thompson
Union Dale
Vandling
Climate data from the nearest NOAA station, Montrose, Pa (4.5 mi from Forest Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.