Union City, PA Weather & Growing Conditions
Today
75°F
Partly Sunny then Slight Chance Light Rain
A slight chance of rain after 4pm. Partly sunny, with a high near 75. South wind 8 to 12 mph, with gusts as high as 23 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Partly Sunny then Slight Chance Light Rain | 8 to 12 mph S | 18% |
| Tonight | 56°F | Light Rain | 7 to 12 mph S | 98% |
| Thursday | 67°F | Chance Light Rain then Mostly Sunny | 6 to 12 mph SW | 33% |
| Thursday Night | 44°F | Mostly Cloudy | 2 to 6 mph SW | 13% |
| Friday | 59°F | Chance Rain Showers | 2 to 7 mph SW | 46% |
| Friday Night | 38°F | Rain Showers | 1 to 5 mph W | 77% |
| Saturday | 49°F | Rain Showers Likely | 5 to 9 mph W | 68% |
| Saturday Night | 32°F | Chance Light Rain | 3 to 7 mph NW | 64% |
| Sunday | 51°F | Slight Chance Light Rain then Partly Sunny | 6 to 12 mph W | 20% |
| Sunday Night | 30°F | Chance Light Rain | 3 to 8 mph W | 25% |
| Monday | 53°F | Chance Light Rain | 5 to 10 mph W | 31% |
| Monday Night | 32°F | Slight Chance Light Rain then Partly Cloudy | 6 mph SW | 22% |
| Tuesday | 57°F | Slight Chance Light Rain | 7 to 12 mph SW | 18% |
| Tuesday Night | 31°F | Slight Chance Light Rain | 2 to 7 mph W | 18% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Union City, PA
Last spring frost
May 7
First fall frost
Oct 10
Growing season
155 days
Hardiness zone
6a
Explore more for Union City, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Union City Filtration Plant, Pa (0.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.