What time of the year can I start seeing groundhogs come out of hibernation?
user
Groundhogs start emerging from hibernation in April.  The groundhog hibernation season starts in late September and ends in late March.
assistant
Have they been known to hibernate past April at all?
user
Yes, there have been rare reports of late emerging groundhogs.  The usual pattern is for hibernation to last from late September to late March.  There are sometimes slightly later-than-usual hibernation seasons.
assistant
What time of the year can I start seeing groundhogs come out of hibernation?
user
Groundhogs start emerging from hibernation in April.  The groundhog hibernation season starts in late September and ends in late March.
assistant
Have they been known to hibernate past April at all?
user
Groundhogs are seasonal hibernators, and they do usually emerge in the spring. However, during very cold winters groundhogs may go into deeper hibernation, for a few extra weeks.
assistant
What time of the year can I start seeing groundhogs come out of hibernation?