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Sycamore, OK Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Sycamore, a community in Delaware County, Oklahoma.

Tonight
46°F
Mostly Cloudy
Mostly cloudy, with a low around 46. West wind 0 to 10 mph.

7-day forecast for Sycamore

WhenTempForecastWindPrecip
Tonight 46°F Mostly Cloudy 0 to 10 mph W 3%
Wednesday 64°F Mostly Sunny 0 to 10 mph W 0%
Wednesday Night 41°F Mostly Clear 0 mph 0%
Thursday 64°F Mostly Sunny then Chance Rain Showers 0 to 5 mph W 45%
Thursday Night 40°F Slight Chance Rain Showers then Mostly Cloudy 0 to 5 mph N 21%
Friday 59°F Mostly Sunny 0 to 5 mph N 0%
Friday Night 38°F Partly Cloudy 0 to 5 mph N 0%
Saturday 59°F Partly Sunny 0 to 5 mph N 1%
Saturday Night 37°F Mostly Clear 0 mph 5%
Sunday 63°F Sunny 0 to 5 mph NW 5%
Sunday Night 37°F Mostly Clear 0 mph 1%
Monday 67°F Sunny 0 to 5 mph SW 0%
Monday Night 42°F Mostly Clear 0 to 5 mph S 0%
Tuesday 70°F Sunny 0 to 5 mph S 0%

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 Nov 4, 2026.