Sycamore, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sycamore, a community in Delaware County, Oklahoma.
Tonight
72°F
Mostly Clear
Mostly clear, with a low around 72. South wind 0 to 5 mph.
7-day forecast for Sycamore
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Mostly Clear | 0 to 5 mph S | 0% |
| Saturday | 97°F | Sunny | 5 to 15 mph S | 1% |
| Saturday Night | 72°F | Partly Cloudy | 5 to 10 mph S | 7% |
| Sunday | 95°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 28% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 5 mph E | 70% |
| Monday | 86°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph N | 68% |
| Monday Night | 61°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph N | 24% |
| Tuesday | 82°F | Mostly Sunny | 5 to 10 mph NE | 7% |
| Tuesday Night | 57°F | Partly Cloudy | 0 to 10 mph NE | 4% |
| Wednesday | 83°F | Mostly Sunny | 0 to 5 mph NE | 4% |
| Wednesday Night | 58°F | Mostly Clear | 0 to 5 mph NE | 4% |
| Thursday | 84°F | Mostly Sunny | 0 to 5 mph NE | 6% |
| Thursday Night | 61°F | Partly Cloudy | 0 to 5 mph E | 6% |
| Friday | 84°F | Partly Sunny | 0 to 5 mph NE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Sycamore (36.399, -94.715). Updated through the day.
Growing snapshot for Sycamore
Last spring frost
Apr 16
First fall frost
Oct 20
Growing season
187 days
Hardiness zone
7a
More local growing data for Sycamore: nearby ZIP 74346 weather · frost dates · planting calendar · Oklahoma frost dates
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Climate data from the nearest NOAA station, Upper Spavinaw Port, Ok (7.4 mi from Sycamore). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.