Your body temperature dips a bit just before your ovary releases an egg. Then, 24 hours after the egg's release, your temperature rises and stays up for several days. Before ovulation, a woman's BBT averages between 97°F (36.1°C) and 97.5°F (36.4°C). After ovulation, it rises to 97.6°F (36.4°C) to 98.6°F (37°C).

Does body temp rise during ovulation?

Basal body temperature may increase slightly — typically less than a 1/2 degree F (0.3 C) — when you ovulate. Ovulation has likely occurred when the slightly higher temperature remains steady for three days or more. Plan sex carefully during fertile days.

How soon after ovulation does temperature rise?

It can take up to three days after ovulation for the temperature to rise. However, in our experience most women experience temperature rises on the same day or a day later than when an ovulation predictor kit turns positive.