Simpson, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Simpson, a community in Lackawanna County, Pennsylvania.
Tonight
47°F
Partly Cloudy
Partly cloudy, with a low around 47. Northeast wind 2 to 6 mph.
7-day forecast for Simpson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Partly Cloudy | 2 to 6 mph NE | 0% |
| Saturday | 71°F | Mostly Sunny | 3 mph E | 1% |
| Saturday Night | 53°F | Mostly Cloudy then Rain Showers | 3 to 8 mph SE | 78% |
| Sunday | 66°F | Rain Showers | 6 to 9 mph S | 99% |
| Sunday Night | 53°F | Rain Showers | 7 mph NW | 96% |
| Monday | 67°F | Slight Chance Rain Showers | 7 mph NE | 21% |
| Monday Night | 48°F | Chance Rain Showers | 5 to 9 mph NE | 32% |
| Tuesday | 61°F | Chance Rain Showers | 10 mph E | 35% |
| Tuesday Night | 45°F | Chance Rain Showers | 8 to 15 mph E | 35% |
| Wednesday | 60°F | Chance Rain Showers | 12 to 15 mph E | 30% |
| Wednesday Night | 45°F | Chance Showers And Thunderstorms | 13 mph E | 36% |
| Thursday | 60°F | Chance Showers And Thunderstorms | 10 mph E | 36% |
| Thursday Night | 47°F | Chance Showers And Thunderstorms | 3 to 7 mph NE | 34% |
| Friday | 67°F | Chance Rain Showers | 5 to 9 mph N | 25% |
Forecast source: National Weather Service (api.weather.gov) for Simpson (41.595, -75.480). Updated through the day.
Growing snapshot for Simpson
Last spring frost
May 14
First fall frost
Oct 1
Growing season
140 days
Hardiness zone
6a
More local growing data for Simpson: nearby ZIP 18407 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Archbald
Big Bass Lake
Blakely
Carbondale
Chinchilla
Clarks Green
Clarks Summit
Dalton
Dickson City
Dunmore
Eagle Lake
Factoryville
Glenburn
Gouldsboro
Jermyn
Jessup
Mayfield
Moosic
Moscow
Mount Cobb
Old Forge
Olyphant
Scranton
Taylor
Throop
Waverly
Climate data from the nearest NOAA station, Pleasant Mt 1 W, Pa (11.2 mi from Simpson). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.