Cypress Lake sees pretty high levels of rainfall. The wettest month of the year is generally December, that's the one that rains the most; August on the other hand is the driest. Through the months of summer at Cypress Lake highs are ordinarily in the 90's. Once the sun is down it falls down to the 70's. The winter brings highs down to the 50's while the cold winter nights at Cypress Lake are in the 30's.