Addison, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Addison, a borough in Somerset County, Pennsylvania.
Tonight
57°F
Areas Of Fog
Areas of fog between 9pm and 3am. Mostly cloudy, with a low around 57. Northeast wind 0 to 5 mph.
7-day forecast for Addison
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Areas Of Fog | 0 to 5 mph NE | 6% |
| Saturday | 74°F | Mostly Sunny | 5 mph SE | 3% |
| Saturday Night | 62°F | Partly Cloudy then Chance Rain Showers | 3 to 7 mph SE | 38% |
| Sunday | 75°F | Showers And Thunderstorms | 3 to 7 mph SW | 94% |
| Sunday Night | 61°F | Showers And Thunderstorms | 3 mph N | 94% |
| Monday | 67°F | Chance Rain Showers | 2 to 7 mph E | 53% |
| Monday Night | 57°F | Showers And Thunderstorms Likely | 8 to 13 mph E | 73% |
| Tuesday | 61°F | Showers And Thunderstorms | 13 mph SE | 78% |
| Tuesday Night | 52°F | Showers And Thunderstorms | 14 to 17 mph E | 77% |
| Wednesday | 58°F | Showers And Thunderstorms Likely | 12 to 15 mph E | 69% |
| Wednesday Night | 51°F | Chance Showers And Thunderstorms | 12 to 16 mph E | 54% |
| Thursday | 60°F | Chance Rain Showers | 6 to 10 mph E | 51% |
| Thursday Night | 51°F | Chance Rain Showers | 6 mph E | 36% |
| Friday | 65°F | Chance Rain Showers | 5 mph NE | 30% |
Forecast source: National Weather Service (api.weather.gov) for Addison (39.745, -79.334). Updated through the day.
Growing snapshot for Addison
Last spring frost
Apr 30
First fall frost
Oct 18
Growing season
171 days
Hardiness zone
6a
More local growing data for Addison: nearby ZIP 15411 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Confluence 1 Sw Dam, Pa (3.8 mi from Addison). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.