St. Petersburg, PA Weather & Growing Conditions
This Afternoon
74°F
Slight Chance Rain Showers
A slight chance of rain showers before 2pm. Mostly cloudy, with a high near 74. Southeast wind around 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Slight Chance Rain Showers | 5 mph SE | 17% |
| Tonight | 60°F | Showers And Thunderstorms | 5 mph SE | 76% |
| Sunday | 74°F | Showers And Thunderstorms | 7 mph SW | 93% |
| Sunday Night | 49°F | Slight Chance Rain Showers | 7 mph N | 23% |
| Monday | 67°F | Mostly Cloudy then Slight Chance Rain Showers | 8 mph NE | 23% |
| Monday Night | 48°F | Chance Rain Showers | 7 to 10 mph E | 48% |
| Tuesday | 61°F | Chance Rain Showers | 12 mph E | 52% |
| Tuesday Night | 47°F | Rain Showers Likely | 13 mph E | 61% |
| Wednesday | 59°F | Rain Showers Likely | 13 mph E | 61% |
| Wednesday Night | 47°F | Chance Rain Showers | 12 mph E | 46% |
| Thursday | 64°F | Chance Rain Showers | 9 mph E | 46% |
| Thursday Night | 47°F | Mostly Cloudy | 6 mph E | 14% |
| Friday | 68°F | Partly Sunny | 6 mph NE | 13% |
| Friday Night | 46°F | Partly Cloudy | 6 mph N | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Petersburg, PA
Last spring frost
May 9
First fall frost
Oct 11
Growing season
154 days
Hardiness zone
6a
Explore more for St. Petersburg, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Clarion 3 Sw, Pa (12 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.