The weather has been somewhat unusual here this year. Well, "unusual" is "usual" most of the time. But, this year the temperature swings were even more pronounced than usual.
We had quite warm weather in March, then suddenly have had some very cool days in May. Generally (I won't say usually again), our Snow Drops bloom only once in the late Winter/very early Spring. This year, though, we are enjoying a second blooming during this very cool month of May.
Update: I have been corrected by friend Steve Willson! These flowers are actually Star of Bethlehem. See comments for more information about them. Thank you, Steve!