St. Petersburg, PA Weather & Growing Conditions
Today
74°F
Partly Sunny then Slight Chance Light Rain
A slight chance of rain between 2pm and 4pm. Partly sunny. High near 74, with temperatures falling to around 68 in the afternoon. South wind around 8 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Partly Sunny then Slight Chance Light Rain | 8 mph S | 16% |
| Tonight | 59°F | Light Rain | 8 mph S | 84% |
| Thursday | 68°F | Slight Chance Light Rain then Mostly Sunny | 6 to 10 mph SW | 24% |
| Thursday Night | 45°F | Partly Cloudy | 5 mph SW | 1% |
| Friday | 61°F | Partly Sunny then Slight Chance Light Rain | 2 to 6 mph SW | 21% |
| Friday Night | 40°F | Chance Light Rain | 2 to 6 mph W | 49% |
| Saturday | 52°F | Chance Light Rain | 6 to 9 mph W | 49% |
| Saturday Night | 34°F | Chance Light Rain | 7 mph W | 37% |
| Sunday | 53°F | Slight Chance Light Rain then Partly Sunny | 6 to 10 mph W | 15% |
| Sunday Night | 31°F | Partly Cloudy | 7 mph W | 9% |
| Monday | 54°F | Slight Chance Light Rain | 6 to 9 mph W | 22% |
| Monday Night | 32°F | Slight Chance Light Rain then Partly Cloudy | 3 to 7 mph SW | 18% |
| Tuesday | 58°F | Mostly Sunny | 7 to 12 mph SW | 7% |
| Tuesday Night | 32°F | Partly Cloudy | 2 to 6 mph W | 7% |
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 Nov 4, 2026.