Union City, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Union City, a borough in Erie County, Pennsylvania.
Overnight
55°F
Partly Cloudy
Partly cloudy, with a low around 55. South wind around 7 mph.
7-day forecast for Union City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Partly Cloudy | 7 mph S | 1% |
| Wednesday | 75°F | Partly Sunny then Slight Chance Light Rain | 8 to 12 mph S | 18% |
| Wednesday Night | 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% |
Forecast source: National Weather Service (api.weather.gov) for Union City (41.898, -79.843). Updated through the day.
Growing snapshot for Union City
Last spring frost
May 7
First fall frost
Oct 10
Growing season
155 days
Hardiness zone
6a
More local growing data for Union City: nearby ZIP 16438 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Albion
Avonia
Canadohta Lake
Corry
Cranesville
Edinboro
Elgin
Erie
Fairview
Girard
Lake City
Lawrence Park
McKean
Mill Village
North East
Northwest Harborcreek
Penn State Erie (Behrend)
Platea
Waterford
Wattsburg
Wesleyville
Climate data from the nearest NOAA station, Union City Filtration Plant, Pa (0.9 mi from Union City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.