Union City, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Union City, a town in Canadian County, Oklahoma.
Today
104°F
Sunny
Sunny, with a high near 104. Heat index values as high as 102. South wind around 12 mph.
7-day forecast for Union City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 104°F | Sunny | 12 mph S | 1% |
| Tonight | 76°F | Mostly Clear | 8 to 12 mph S | 3% |
| Wednesday | 103°F | Sunny | 9 to 14 mph SSW | 3% |
| Wednesday Night | 75°F | Mostly Clear | 9 to 14 mph S | 4% |
| Thursday | 101°F | Mostly Sunny | 8 to 13 mph SSW | 12% |
| Thursday Night | 74°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 12 mph SSE | 19% |
| Friday | 99°F | Chance Showers And Thunderstorms | 9 to 13 mph S | 28% |
| Friday Night | 72°F | Slight Chance Showers And Thunderstorms | 9 to 13 mph S | 15% |
| Saturday | 99°F | Sunny | 8 to 13 mph S | 13% |
| Saturday Night | 74°F | Clear | 13 mph S | 2% |
| Sunday | 99°F | Sunny | 10 to 15 mph S | 1% |
| Sunday Night | 74°F | Clear | 15 mph S | 0% |
| Monday | 100°F | Sunny | 13 to 17 mph SSW | 1% |
| Monday Night | 74°F | Clear | 16 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Union City (35.400, -97.907). Updated through the day.
Growing snapshot for Union City
Last spring frost
Apr 3
First fall frost
Nov 5
Growing season
216 days
Hardiness zone
7b
More local growing data for Union City: nearby ZIP 73090 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Minco 2Ssw Mesonet, Ok (8.7 mi from Union City). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.