Weather for C Jarvis Reservoir, OK - C Jarvis Reservoir, OK Weather, Current Weather in C Jarvis Reservoir, OK. Local weather report for C Jarvis Reservoir, OK, Local C Jarvis Reservoir, OK weather. Forecast for C Jarvis Reservoir, Oklahoma, C Jarvis Reservoir, OK weather forecast. Find your local C Jarvis Reservoir weather forecast. C Jarvis Reservoir, OK weather conditions.